Patent application number | Description | Published |
20100263861 | System and Method for Optimizing Gravel Deposition in Subterranean Wells - A system for optimizing gravel deposition in a completion interval of a well. The system includes a pumping system that is operable to deliver a gravel pack slurry to the completion interval, an actuator system that is operable to control properties of the gravel pack slurry and a sensor system that is operable to monitor parameters representative of gravel deposition in the completion interval. A dynamic gravel pack model defined in a computer is operable to receive data from the sensor system and provides estimates of gravel deposition in the completion interval. A control system is operable to control the pumping system and the actuator system in relation to a gravel pack deposition plan and the dynamic gravel pack model, wherein the estimates of the dynamic gravel pack model are input into the control system to automatically modify the gravel pack deposition plan. | 10-21-2010 |
20110042091 | FLOW PATH CONTROL BASED ON FLUID CHARACTERISTICS TO THEREBY VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL - A system for variably resisting flow of a fluid composition can include a flow passage and a set of one or more branch passages which intersect the flow passage, whereby a proportion of the fluid composition diverted from the passage to the set of branch passages varies based on at least one of a) viscosity of the fluid composition, and b) velocity of the fluid composition in the flow passage. Another variable flow resistance system can include a flow path selection device that selects which of multiple flow paths a majority of fluid flows through from the device, based on a ratio of desired fluid to undesired fluid in the fluid composition. Yet another variable flow resistance system can include a flow chamber, with a majority of the fluid composition entering the chamber in a direction which changes based on a ratio of desired fluid to undesired fluid in the fluid composition. | 02-24-2011 |
20110042092 | ALTERNATING FLOW RESISTANCE INCREASES AND DECREASES FOR PROPAGATING PRESSURE PULSES IN A SUBTERRANEAN WELL - A method of propagating pressure pulses in a well can include flowing a fluid composition through a variable flow resistance system which includes a vortex chamber having at least one inlet and an outlet, a vortex being created when the fluid composition spirals about the outlet, and a resistance to flow of the fluid composition alternately increasing and decreasing. The vortex can be alternately created and dissipated in response to flowing the fluid composition through the system. A well system can include a variable flow resistance system which propagates pressure pulses into a formation in response to flow of a fluid composition from the formation. | 02-24-2011 |
20110186300 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - An apparatus is described for controlling flow of fluid in a tubular positioned in a wellbore extending through a subterranean formation. A flow control system is placed in fluid communication with a main tubular. The flow control system has a flow ratio control system and a pathway dependent resistance system. The flow ratio control system has a first and second passageway, the production fluid flowing into the passageways with the ratio of fluid flow through the passageways related to the characteristic of the fluid flow. The pathway dependent resistance system includes a vortex chamber with a first and second inlet and an outlet, the first inlet of the pathway dependent resistance system in fluid communication with the first passageway of the fluid ratio control system and the second inlet in fluid communication with the second passageway of the fluid ratio control system. The first inlet is positioned to direct fluid into the vortex chamber such that it flows primarily tangentially into the vortex chamber, and the second inlet is positioned to direct fluid such that it flows primarily radially into the vortex chamber. Undesired fluids, such as natural gas or water, in an oil well, are directed, based on their relative characteristic, into the vortex primarily tangentially, thereby restricting fluid flow when the undesired fluid is present as a component of the production fluid. | 08-04-2011 |
20110214876 | FLOW PATH CONTROL BASED ON FLUID CHARACTERISTICS TO THEREBY VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL - A system for variably resisting flow of a fluid composition can include a flow passage and a set of one or more branch passages which intersect the flow passage, whereby a proportion of the fluid composition diverted from the passage to the set of branch passages varies based on at least one of a) viscosity of the fluid composition, and b) velocity of the fluid composition in the flow passage. Another variable flow resistance system can include a flow path selection device that selects which of multiple flow paths a majority of fluid flows through from the device, based on a ratio of desired fluid to undesired fluid in the fluid composition. Yet another variable flow resistance system can include a flow chamber, with a majority of the fluid composition entering the chamber in a direction which changes based on a ratio of desired fluid to undesired fluid in the fluid composition. | 09-08-2011 |
20110266001 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. In other embodiments, the fluid diverter moves in response to a change in the fluid to affect fluid flow patterns in a tubular, the change in flow pattern operating a valve assembly. | 11-03-2011 |
20110297384 | VARIABLE FLOW RESISTANCE SYSTEM FOR USE IN A SUBTERRANEAN WELL - A variable flow resistance system can include a flow chamber through which a fluid composition flows in a well, the chamber having an inlet and an outlet. The fluid composition enters via the inlet in a direction which changes based on a ratio of desired to undesired fluid in the fluid composition. A well system can include a variable flow resistance system through which a fluid composition flows between a tubular string and a formation, the flow resistance system including a flow chamber through which the fluid composition flows, with only one chamber inlet. The fluid composition flows more directly from the inlet to an outlet as a ratio of desired to undesired fluid in the fluid composition increases. Another flow resistance system can include at least one structure which influences portions of the fluid composition which flow circuitously between the inlet and the outlet to maintain such circuitous flow. | 12-08-2011 |
20110297385 | VARIABLE FLOW RESISTANCE SYSTEM WITH CIRCULATION INDUCING STRUCTURE THEREIN TO VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL - A variable flow resistance system for use in a subterranean well can include a flow chamber having an outlet and at least one structure which resists a change in a direction of flow of a fluid composition toward the outlet. The fluid composition may enter the chamber in the direction of flow which changes based on a ratio of desired fluid to undesired fluid in the fluid composition. Another variable flow resistance system can include a flow chamber through which a fluid composition flows, the chamber having an inlet, an outlet, and a structure which impedes a change from circular flow about the outlet to radial flow toward the outlet. | 12-08-2011 |
20110308806 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - An apparatus is described for controlling flow of fluid in a tubular positioned in a wellbore extending through a subterranean formation. A flow control system is placed in fluid communication with a main tubular. The flow control system has a flow ratio control system and a pathway dependent resistance system. The flow ratio control system has a first and second passageway, the production fluid flowing into the passageways with the ratio of fluid flow through the passageways related to the characteristic of the fluid flow. The pathway dependent resistance system includes a vortex chamber with a first and second inlet and an outlet, the first inlet of the pathway dependent resistance system in fluid communication with the first passageway of the fluid ratio control system and the second inlet in fluid communication with the second passageway of the fluid ratio control system. The first inlet is positioned to direct fluid into the vortex chamber such that it flows primarily tangentially into the vortex chamber, and the second inlet is positioned to direct fluid such that it flows primarily radially into the vortex chamber. Undesired fluids, such as natural gas or water, in an oil well, are directed, based on their relative characteristic, into the vortex primarily tangentially, thereby restricting fluid flow when the undesired fluid is present as a component of the production fluid. | 12-22-2011 |
20120060624 | SERIES CONFIGURED VARIABLE FLOW RESTRICTORS FOR USE IN A SUBTERRANEAN WELL - A variable flow resistance system can include a vortex device, with resistance to flow of a fluid composition through the vortex device being dependent on a rotation of the fluid composition at an inlet to the vortex device. Another system can include a second vortex device which receives a fluid composition from an outlet of a first vortex device, a resistance to flow of the fluid composition through the second vortex device being dependent on a rotation of the fluid composition at the outlet. Another system can include a first vortex device which causes increased rotation of a fluid composition at an outlet thereof in response to an increase the fluid composition velocity, and a second vortex device which receives the fluid composition from the outlet, a flow resistance through the second vortex device being dependent on the rotation of the fluid composition at the outlet. | 03-15-2012 |
20120061088 | SELF-RELEASING PLUG FOR USE IN A SUBTERRANEAN WELL - A flow control system for use in a subterranean well can include a flow chamber through which a fluid composition flows, and a plug which is released in response to an increase in a ratio of undesired fluid to desired fluid in the fluid composition. Another flow control system can include a flow chamber through which a fluid composition flows, a plug, and a structure which supports the plug, but which releases the plug in response to degrading of the structure by the fluid composition. Yet another flow control system can include a flow chamber through which a fluid composition flows, and a plug which is released in response to an increase in a velocity of the fluid composition in the flow chamber. | 03-15-2012 |
20120111577 | VARIABLE FLOW RESISTANCE SYSTEM WITH CIRCULATION INDUCING STRUCTURE THEREIN TO VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL - A flow control device can include a surface that defines a chamber and includes a side perimeter and opposing end surfaces, a greatest distance between the opposing end surfaces being smaller than a largest dimension of the opposing end surfaces, a first port through one of the end surfaces, and a second port through the surface and apart from the first port, the side perimeter surface being operable to direct flow from the second port to rotate about the first port. Another device can include a cylindroidal chamber for receiving flow through an inlet and directing the flow to an outlet, a greatest axial dimension of the cylindroidal chamber being smaller than a greatest diametric dimension of the cylindroidal chamber, the cylindroidal chamber promoting rotation of the flow based on a characteristic of the inflow through the inlet. The device can have a flow path structure in the cylindroidal chamber. | 05-10-2012 |
20120138304 | DEVICE FOR DIRECTING THE FLOW OF A FLUID USING A PRESSURE SWITCH - A device for directing the flow of a fluid comprises: a pressure pocket; a first fluid passageway; a pressure source; and a pressure switch, wherein the first fluid passageway operationally connects at least the pressure pocket and the pressure source, and wherein the pressure switch is positioned adjacent to the pressure source. According to an embodiment, depending on at least one of the properties of the fluid, the fluid that flows into the pressure pocket changes. In one embodiment, the change is the fluid increasingly flows into the pressure pocket. In another embodiment, the change is the fluid decreasingly flows into the pressure pocket. According to another embodiment, a flow rate regulator comprises: the device for directing the flow of a fluid; a second fluid passageway; a third fluid passageway; and a fourth fluid passageway. | 06-07-2012 |
20120152527 | EXIT ASSEMBLY WITH A FLUID DIRECTOR FOR INDUCING AND IMPEDING ROTATIONAL FLOW OF A FLUID - According to an embodiment, an exit assembly comprises: a first fluid inlet; a first fluid outlet; and at least one fluid director, wherein the fluid enters the exit assembly in one direction, in another direction, or combinations thereof, and wherein the at least one fluid director induces flow of the fluid rotationally about the assembly when the fluid enters in the one direction and impedes flow of the fluid rotationally about the assembly when the fluid enters in the another direction. In another embodiment, the exit assembly includes two or more fluid inlets. According to another embodiment, a flow rate restrictor comprises: a fluid switch; and the exit assembly. According to another embodiment, the flow rate restrictor is for use in a subterranean formation. | 06-21-2012 |
20120179428 | SYSTEM AND METHOD FOR COMPLETION OPTIMIZATION - A system for completing a wellbore ( | 07-12-2012 |
20120211243 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 08-23-2012 |
20120234557 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 09-20-2012 |
20120255739 | SELECTIVELY VARIABLE FLOW RESTRICTOR FOR USE IN A SUBTERRANEAN WELL - A variable flow resistance system for use with a subterranean well can include a flow chamber through which a fluid composition flows, the chamber having at least two inlets, and a flow resistance which varies depending on proportions of the fluid composition which flow into the chamber via the respective inlet flow paths, and an actuator which varies the proportions. The actuator may deflect the fluid composition toward one of the inlet flow paths. A method of variably controlling flow resistance in a well can include changing an orientation of a deflector relative to a passage through which a fluid composition flows, thereby influencing the fluid composition to flow toward one of multiple inlet flow paths of a flow chamber, the chamber having a flow resistance which varies depending on proportions of the fluid composition which flow into the chamber via the respective inlet flow paths. | 10-11-2012 |
20120255740 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW IN AN AUTONOMOUS VALVE USING A STICKY SWITCH - Apparatus and methods are described for autonomously controlling fluid flow in a tubular in a wellbore. A fluid is flowed through an inlet passageway into a biasing mechanism. A fluid flow distribution is established across the biasing mechanism. The fluid flow distribution is altered in response to a change in the fluid characteristic over time. In response, fluid flow through a downstream sticky switch assembly is altered, thereby altering fluid flow patterns in a downstream vortex assembly. The method “selects” based on a fluid characteristic, such as viscosity, density, velocity, flow rate, etc. The biasing mechanism can take various forms such as a widening passageway, contour elements along the biasing mechanism, or a curved section of the biasing mechanism passageway. The biasing mechanism can include hollows formed in the passageway wall, obstructions extending from the passageway wall, fluid diodes, Tesla fluid diodes, a chicane, or abrupt changes in passageway cross-section. | 10-11-2012 |
20120279593 | DEVICE FOR DIRECTING THE FLOW OF A FLUID USING A CENTRIFUGAL SWITCH - According to an embodiment, a device for directing the flow of a fluid comprises: a fluid chamber; a first outlet; a second outlet; a first outlet fluid passageway, wherein the first outlet fluid passageway is operatively connected to the first outlet; and a second outlet fluid passageway, wherein the second outlet fluid passageway is operatively connected to the second outlet; wherein the fluid rotationally flows about the inside of the chamber, and wherein the fluid flowing through the first outlet fluid passageway conjoins with the fluid flowing through the second outlet fluid passageway at a point downstream of the first and second outlet. According to another embodiment, a device for directing the flow of a fluid comprises: a sensor; a first outlet connected to the sensor; a second outlet connected to the sensor; a first outlet fluid passageway; and a second outlet fluid passageway; wherein as the total number of phases of the fluid increases, the sensor directs at least a first phase of the fluid into the first outlet fluid passageway and directs at least a second phase of the fluid into the second outlet fluid passageway, and wherein the fluid flowing through the first outlet fluid passageway conjoins with the fluid flowing through the second outlet fluid passageway at a point downstream of the first and second outlet. | 11-08-2012 |
20120318511 | Managing Treatment of Subterranean Zones - A downhole heated fluid generation system includes an air subsystem having at least one of an air compressor and an air flow control valve; a fuel subsystem having at least one of a fuel compressor and a fuel flow control valve; a treatment fluid subsystem having a fluid pump; a combustor fluidly coupled to at least one of the air subsystem, the fuel subsystem, or the treatment fluid subsystem, and operable to provide a heated fluid into a wellbore; and a controller operable to receive an input representing a heated fluid parameter; determine a virtual heated fluid generation rate based at least partially on the heated fluid parameter; and control at least one of the air subsystem, the fuel subsystem, or the treatment fluid subsystem by the virtual heated fluid generation rate. | 12-20-2012 |
20120318526 | Managing Treatment of Subterranean Zones - A downhole heated fluid generation system includes: a compressor-valve assembly having a compressor and a valve, the assembly operable to compress and regulate a fluid used in generating a heated treatment fluid; a combustor fluidly coupled to the compressor-valve assembly, the combustor operable to provide the heated treatment fluid into a wellbore; and a controller communicably coupled to the compressor-valve assembly, the controller operable to: determine an input indicative of a desired position of the valve; determine a value indicative of an actual position of the valve; determine a desired operating condition of the compressor based, at least in part, on the input indicative of the desired position of the valve and the value indicative of an actual position of the valve; and adjust an operating parameter of the compressor based on the desired operating pressure to compress a fluid flowing through the compressor and the valve. | 12-20-2012 |
20130014940 | Estimating a Wellbore ParameterAANM Fripp; Michael LinleyAACI CarrolltonAAST TXAACO USAAGP Fripp; Michael Linley Carrollton TX USAANM Dykstra; Jason D.AACI CarrolltonAAST TXAACO USAAGP Dykstra; Jason D. Carrollton TX US - A system for estimating a wellbore parameter includes a first component located at or near a terranean surface; a second component at least partially disposed within a wellbore at or near a subterranean zone, the second component associated with a sensor; and a controller communicably coupled to the first and second components operable to: adjust a characteristic of an input fluid to the wellbore through a range of input values; receive, from the sensor, a plurality of output values of the input fluid that vary in response to the input values, the output values representative of a downhole condition; and estimate a wellbore parameter distinct from the downhole condition based on the measured output values. | 01-17-2013 |
20130014955 | METHODS OF LIMITING OR REDUCING THE AMOUNT OF OIL IN A SEA USING A FLUID DIRECTORAANM FRIPP; Michael L.AACI CarrolltonAAST TXAACO USAAGP FRIPP; Michael L. Carrollton TX USAANM DYKSTRA; Jason D.AACI CarrolltonAAST TXAACO USAAGP DYKSTRA; Jason D. Carrollton TX US - According to an embodiment, a method of limiting the amount of oil in a sea comprises: positioning a device for directing the flow of a fluid adjacent to a wellhead, wherein the device comprises: a first fluid passageway; a second fluid passageway; a third fluid passageway, wherein the first fluid passageway is operatively connected to the second and third fluid passageways; and a fluid director, wherein the fluid director is operatively connected to the first, second, and third fluid passageways, and wherein depending on at least one of the properties of a fluid, the fluid director directs the fluid to increasingly flow into the second or third fluid passageways. This embodiment is useful in limiting the amount of oil when a blowout has occurred. According to another embodiment, a method of reducing the amount of oil in a sea comprises: inserting at least one component of the device for directing the flow of a fluid into a portion of a sea, wherein the portion of the sea comprises the oil, and wherein depending on at least one of the properties of a fluid, the fluid director directs the fluid to increasingly flow into the second or third fluid passageways. This embodiment is useful for reducing the amount of oil in a sea when an oil slick has occurred. | 01-17-2013 |
20130020090 | THREE DIMENSIONAL FLUIDIC JET CONTROL - A method of controlling a fluid jet can include discharging fluid through an outlet of a jetting device, thereby causing the fluid jet to be flowed in multiple non-coplanar directions, and the fluid jet being directed in the non-coplanar directions by a fluidic circuit of the jetting device. A jetting device can include a body having at least one outlet, and a fluidic circuit which directs a fluid jet to flow from the outlet in multiple non-coplanar directions without rotation of the outlet. A method of drilling a wellbore can include flowing fluid through a fluidic switch of a jetting device, thereby causing a fluid jet to be discharged in multiple non-coplanar directions from the jetting device, and the fluid jet cutting into an earth formation. | 01-24-2013 |
20130048301 | Downhole Fluid Flow Control System and Method having Dynamic Response to Local Well Conditions - A downhole fluid flow control system having dynamic response to local well conditions. The system includes a tubing string operably positionable in a wellbore. Annular barriers are positioned between the tubing string and the wellbore to isolate first and second zones. A fluid flow control device is positioned within each zone. A flow tube that is operably associated with the fluid flow control device of the first zone is operable to establish communication between the second zone and the fluid flow control device in the first zone such that a differential pressure between the first zone and the second zone is operable to actuate the fluid flow control device of the first zone from a first operating configuration to a second operating configuration. | 02-28-2013 |
20130056217 | FLOW PATH CONTROL BASED ON FLUID CHARACTERISTICS TO THEREBY VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL - A system for variably resisting flow of a fluid composition can include a flow passage and a set of one or more branch passages which intersect the flow passage, whereby a proportion of the composition diverted from the passage to the set of branch passages varies based on at least one of a) viscosity of the fluid composition, and b) velocity of the fluid composition in the flow passage. Another variable flow resistance system can include a flow path selection device that selects which of multiple flow paths a majority of fluid flows through from the device, based on a ratio of desired fluid to undesired fluid in the composition. Yet another variable flow resistance system can include a flow chamber, with a majority of the composition entering the chamber in a direction which changes based on a ratio of desired fluid to undesired fluid in the composition. | 03-07-2013 |
20130075107 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - An apparatus is described for controlling flow of fluid in a subterranean formation based on a selected characteristic of fluid flow, such as viscosity, velocity or density, as that characteristic varies over time. A pathway-dependent resistance assembly, such as a vortex chamber having two inlets and an outlet, provides varying resistance to fluid flow based on the ratio of flow from the inlets, the direction of flow as directed by the inlets, and the characteristic of the fluid. The incoming flow ratio is preferably determined by flowing fluid through a plurality of passageways having differing flow rate responses to fluid having differing characteristics. Fluid of a selected characteristic will encounter lesser resistance to flow across the system, while fluid of an un-favored characteristic will encounter greater resistance to flow. Thus, flow of well fluids can be autonomously restricted as the fluid characteristics change over time. | 03-28-2013 |
20130092381 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 04-18-2013 |
20130092382 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 04-18-2013 |
20130092392 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 04-18-2013 |
20130092393 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW USING MOVABLE FLOW DIVERTER ASSEMBLY - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 04-18-2013 |
20130112423 | VARIABLE FLOW RESISTANCE FOR USE WITH A SUBTERRANEAN WELL - A variable flow resistance system for use with a subterranean well can include a structure which displaces in response to a flow of a fluid composition, whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another system can include a structure which rotates in response to flow of a fluid composition, and a fluid switch which deflects the fluid composition relative to at least two flow paths. A method of variably resisting flow in a subterranean well can include a structure displacing in response to a flow of a fluid composition, and a resistance to the flow of the fluid composition changing in response to a ratio of desired to undesired fluid in the fluid composition changing. Swellable materials and airfoils may be used in variable flow resistance systems. | 05-09-2013 |
20130112424 | FLUID DISCRIMINATION FOR USE WITH A SUBTERRANEAN WELL - A fluid discrimination system can include a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a fluid type in the fluid composition. Another fluid discriminator can include a structure which displaces in response to a fluid composition flow, whereby an outlet flow path of the fluid composition changes in response to a change in a ratio of fluids in the fluid composition. A method of discriminating between fluids can include providing a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows in the well, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a ratio of the fluids in the fluid composition. | 05-09-2013 |
20130112425 | FLUID DISCRIMINATION FOR USE WITH A SUBTERRANEAN WELL - A fluid discrimination system can include a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a fluid type in the fluid composition. Another fluid discriminator can include a structure which displaces in response to a fluid composition flow, whereby an outlet flow path of the fluid composition changes in response to a change in a ratio of fluids in the fluid composition. A method of discriminating between fluids can include providing a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows in the well, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a ratio of the fluids in the fluid composition. | 05-09-2013 |
20130126027 | EXIT ASSEMBLY HAVING A FLUID DIVERTER THAT DISPLACES THE PATHWAY OF A FLUID INTO TWO OR MORE PATHWAYS - According to an embodiment, an exit assembly comprises: a fluid inlet; an exit chamber; a fluid outlet, wherein the fluid outlet is located within the exit chamber; and a fluid diverter, wherein the fluid diverter is connected to the fluid inlet and the exit chamber, wherein a fluid is capable of flowing from the fluid inlet, through the fluid diverter, and into the exit chamber, and wherein the shape of the fluid diverter is selected such that the fluid diverter is capable of displacing the pathway of the fluid from the fluid inlet into a first fluid pathway, a second fluid pathway, or combinations thereof, wherein the first fluid pathway and the second fluid pathway are located within the exit chamber. According to another embodiment, the fluid diverter increasingly displaces the pathway of the fluid from the fluid inlet into the first fluid pathway as the viscosity or density of the fluid decreases, or as the flow rate of the fluid increases, and the fluid diverter increasingly displaces the pathway of the fluid from the fluid inlet into the second fluid pathway as the viscosity or density of the fluid increases, or as the flow rate of the fluid decreases. | 05-23-2013 |
20130140038 | Bidirectional Downhole Fluid Flow Control System and Method - A bidirectional downhole fluid flow control system is operable to control the inflow of formation fluids and the outflow of injection fluids. The system includes at least one injection flow control component and at least one production flow control component in parallel with the at least one injection flow control component. The at least one injection flow control component and the at least one production flow control component each have direction dependent flow resistance, such that injection fluid flow experiences a greater flow resistance through the at least one production flow control component than through the at least one injection flow control component and such that production fluid flow experiences a greater flow resistance through the at least one injection flow control component than through the at least one production flow control component. | 06-06-2013 |
20130153238 | FLUID FLOW CONTROL - Fluid flow influencer devices capable of affecting fluid flow for fluid selection are described. Fluid flow influencer devices may affect fluid flowing into a turbulence, such as a vortex, having a structure that is usable to restrict fluid flow in a flow path of a chamber by different amounts based on at least one property of the fluid. The fluid flow control device may be in an autonomous fluid selector, such as a diverter, a vortex-causing device, or a whisker. Fluid properties based on which the flow influencer device can select fluid can include fluid density, fluid velocity, fluid viscosity, and Reynolds number of the fluid flow. | 06-20-2013 |
20130160990 | FLOW-AFFECTING DEVICE - Fluid flow influencer devices in chambers subsequent to vortex assemblies are described. A flow-affecting device can move from a first position to a second position based on a flow path of fluid flowing from the vortex assembly to the chamber. The flow path may depend on an amount of rotation of the fluid from the vortex assembly. The flow-affecting device in the first position can substantially allow fluid to flow through a chamber exit opening. The flow-affecting device in the second position can substantially restrict fluid from flowing through the chamber exit opening. | 06-27-2013 |
20130161018 | Functionalized Surface for Flow Control Device - Flow control devices can include functionalized surfaces on inner regions of walls. A functionalized surface can include a hydrophilic and/or a hydrophobic material that can affect fluid flowing in a flow path of a wall to facilitate fluid selection by the flow control device. Fluids may be switched in a flow control device using a functionalized surface even when a density and viscosity of different oil and water mixtures of the fluids are the same. | 06-27-2013 |
20130180727 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 07-18-2013 |
20130186634 | Downhole Fluid Flow Control System Having a Fluidic Module with a Bridge Network and Method for Use of Same - A downhole fluid flow control system includes a fluidic module ( | 07-25-2013 |
20130213142 | PRESSURE DIFFERENTIAL FLOW METER INCLUDING A CONSTRICTION DEVICE THAT CAN CREATE MULTIPLE AREAS OF CONSTRICTION - A pressure differential flow meter for determining the flow rate of a fluid comprises a constriction device, wherein the constriction device is capable of creating at least a first area of constriction and a second area of constriction having cross-sectional areas that are different, wherein the constriction device automatically moves from the first area of constriction to the second area of constriction when the pressure differential increases above or falls below a predetermined range, and wherein the pressure differential is based on the fluid velocity of the fluid flowing in the flow meter. A method of determining the flow rate of a fluid using the pressure differential flow meter comprises flowing the fluid through the flow meter. | 08-22-2013 |
20130255960 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - An apparatus is described for controlling fluid flow in a downhole tubular. Fluid is flowed through a flow control system having a flow ratio control system and a pathway dependent resistance system. The flow ratio control system has a first and second passageway, where the ratio of fluid flowing through the passageways dependent on a characteristic of the fluid flow. The pathway dependent resistance system includes a vortex chamber with a first inlet directing flow primarily tangentially into the vortex chamber and the second inlet directing flow primarily radially into the vortex chamber. Undesired fluids, such as gas or water, in an oil well, are directed, based on their relative fluid flow characteristics, into the vortex primarily tangentially, thereby restricting flow when the undesired fluid is present. | 10-03-2013 |
20130269950 | METHOD OF SIMULTANEOUSLY STIMULATING MULTIPLE ZONES OF A FORMATION USING FLOW RATE RESTRICTORS - A method of simultaneously stimulating at least a first zone and a second zone of a subterranean formation comprises: flowing a fluid through at least a first flow rate restrictor and a second flow rate restrictor, wherein: (A) the first flow rate restrictor is located adjacent to the first zone, (B) the second flow rate restrictor is located adjacent to the second zone, (C) the first and second flow rate restrictors are connected in parallel, and (D) as at least one of the properties of the fluid changes, the flow rates of the fluid exiting the first and second flow rate restrictors are similar within a flow rate range; and allowing the fluid to stimulate at least the first zone and the second zone. | 10-17-2013 |
20130277066 | ALTERNATING FLOW RESISTANCE INCREASES AND DECREASES FOR PROPAGATING PRESSURE PULSES IN A SUBTERRANEAN WELL - A method of propagating pressure pulses in a well can include flowing a fluid composition through a variable flow resistance system which includes a vortex chamber having at least one inlet and an outlet, a vortex being created when the fluid composition spirals about the outlet, and a resistance to flow of the fluid composition alternately increasing and decreasing. The vortex can be alternately created and dissipated in response to flowing the fluid composition through the system. A well system can include a variable flow resistance system which propagates pressure pulses into a formation in response to flow of a fluid composition from the formation. | 10-24-2013 |
20140014351 | FLUID FLOW CONTROL USING CHANNELS - A fluid flow control device disposable in a bore can include channels that can direct fluid flow based on one or more properties of the fluid more robustly. The channels may include a side channel between two other channels. The side channel can allow fluid flow to affect fluid flowing in one of the channels. Devices according to some aspects can differentiate between fluids having close, but different, properties and direct the fluid accordingly. Examples of fluid properties based on which the device can direct fluid include fluid density, fluid velocity, fluid viscosity, and Reynolds number of the fluid flow. | 01-16-2014 |
20140048280 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW IN AN AUTONOMOUS VALVE USING A STICKY SWITCH - Apparatus and methods are described for autonomously controlling fluid flow in a tubular in a wellbore. A fluid is flowed through an inlet passageway into a biasing mechanism. A fluid flow distribution is established across the biasing mechanism. The fluid flow distribution is altered in response to a change in the fluid characteristic over time. In response, fluid flow through a downstream sticky switch assembly is altered, thereby altering fluid flow patterns in a downstream vortex assembly. The method “selects” based on a fluid characteristic, such as viscosity, density, velocity, flow rate, etc. The biasing mechanism can take various forms such as a widening passageway, contour elements along the biasing mechanism, or a curved section of the biasing mechanism passageway. The biasing mechanism can include hollows formed in the passageway wall, obstructions extending from the passageway wall, fluid diodes, Tesla fluid diodes, a chicane, or abrupt changes in passageway cross-section. | 02-20-2014 |
20140048282 | METHOD AND APPARATUS FOR AUTONOMOUS DOWNHOLE FLUID SELECTION WITH PATHWAY DEPENDENT RESISTANCE SYSTEM - Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve. | 02-20-2014 |
20140110128 | VARIABLE FLOW RESISTANCE FOR USE WITH A SUBTERRANEAN WELL - A variable flow resistance system for use with a subterranean well can include a structure which displaces in response to a flow of a fluid composition, whereby a resistance to the flow of the fluid composition changes in response to a change in a ratio of desired to undesired fluid in the fluid composition. Another system can include a structure which rotates in response to flow of a fluid composition, and a fluid switch which deflects the fluid composition relative to at least two flow paths. A method of variably resisting flow in a subterranean well can include a structure displacing in response to a flow of a fluid composition, and a resistance to the flow of the fluid composition changing in response to a ratio of desired to undesired fluid in the fluid composition changing. Swellable materials and airfoils may be used in variable flow resistance systems. | 04-24-2014 |
20140182856 | Downhole Fluid Flow Control System and Method having Dynamic Response to Local Well Conditions - A downhole fluid flow control system having dynamic response to local well conditions. The system includes a tubing string operably positionable in a wellbore. Annular barriers are positioned between the tubing string and the wellbore to isolate first and second zones. A fluid flow control device is positioned within each zone. A flow tube that is operably associated with the fluid flow control device of the first zone is operable to establish communication between the second zone and the fluid flow control device in the first zone such that a differential pressure between the first zone and the second zone is operable to actuate the fluid flow control device of the first zone from a first operating configuration to a second operating configuration. | 07-03-2014 |
20140284062 | METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW IN AN AUTONOMOUS VALVE USING A STICKY SWITCH - Apparatus and methods are described for autonomously controlling fluid flow in a tubular in a wellbore. A fluid is flowed through an inlet passageway into a biasing mechanism. A fluid flow distribution is established across the biasing mechanism. The fluid flow distribution is altered in response to a change in the fluid characteristic over time. In response, fluid flow through a downstream sticky switch assembly is altered, thereby altering fluid flow patterns in a downstream vortex assembly. The method “selects” based on a fluid characteristic, such as viscosity, density, velocity, flow rate, etc. The biasing mechanism can take various forms such as a widening passageway, contour elements along the biasing mechanism, or a curved section of the biasing mechanism passageway. The biasing mechanism can include hollows formed in the passageway wall, obstructions extending from the passageway wall, fluid diodes, Tesla fluid diodes, a chicane, or abrupt changes in passageway cross-section. | 09-25-2014 |
20140290776 | Rotational Motion-Inducing Variable Flow Resistance Systems Having a Sidewall Fluid Outlet and Methods for Use Thereof in a Subterranean Formation - Variable flow resistance systems can be used to regulate fluid flow in various applications, particularly within a subterranean formation. A variable flow resistance system can comprise a chamber configured to induce rotational motion of a fluid flowing therethrough, a fluid inlet coupled to the chamber, and a fluid outlet coupled to the chamber that allows the fluid to exit through at least a sidewall of the chamber. If desired, a plurality of the chambers can be connected in series fluid flow communication with one another. | 10-02-2014 |
20150105912 | SYSTEMS AND METHODS OF DRILLING CONTROL - A system to optimize a drilling parameter of a drill string includes a drill string control subsystem. The system includes an optimization controller to coordinate operations of the drill string control subsystem during a drilling process at least in part by: determining a first optimized rate of penetration based on a drilling parameter model and a first drilling parameter estimate; providing a first set of commands to the drill string control subsystem based on the first optimized rate of penetration; determining a second drilling parameter estimate during the drilling process based, at least in part, on the drilling parameter model and feedback corresponding to the drill string control subsystem; determining a second optimized rate of penetration during the drilling process based on the second drilling parameter estimate; and providing a second set of commands to the drill string control subsystem based on the second optimized rate of penetration. | 04-16-2015 |
20150252657 | INJECTION WELL AND METHOD FOR DRILLING AND COMPLETION - Disclosed is a method and apparatus for completing an injection well, wherein the horizontally-extending portion of the well is drilled in a wave pattern. Injection and hydrocarbon recovery sections or alternatively spaced along the horizontally-extending portion and are isolated from each other by packers in the wellbore. The injection and hydrocarbon recovery sections are positioned at the opposed peaks of the wave pattern. | 09-10-2015 |
Patent application number | Description | Published |
20080223575 | CASING AND LINER DRILLING BITS AND REAMERS, CUTTING ELEMENTS THEREFOR, AND METHODS OF USE - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 09-18-2008 |
20100030527 | SYSTEM, PROGRAM PRODUCT, AND RELATED METHODS FOR BIT DESIGN OPTIMIZATION AND SELECTION - Systems, program product, and methods are provided which include analyzing the drillability of a subterranean formation and a database of performance characteristics for drilling bits to facilitate bit design optimization and selection for that formation. Using component subterranean formation data, computer models can be generated for the drillability of a target section in terms of physical, mechanical, and micro-structural properties, and for postulated suitable drilling bit performance characteristics based on physical, mechanical, and micro-structural properties of the target section. The drilling bit performance characteristics are then updated by quantifying effects of the drilling system to be employed. Each performance characteristic can be normalized and plotted on its own axis for easy comparison. Next, a candidate drilling bit design is selected from a library of computer models of drilling bit characteristics for a suite of drilling bit designs. An optimization of the drilling bit design may be also performed. | 02-04-2010 |
20110114392 | DRILLING APPARATUS WITH REDUCED EXPOSURE OF CUTTERS AND METHODS OF DRILLING - A rotary drilling apparatus and method for drilling subterranean formations, including a body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation, so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per rotation of the drilling apparatus, as well as to control the amount of torque experienced by the drilling apparatus and an optionally associated bottomhole assembly regardless of the effective weight-on-bit are all disclosed. The exterior of the drilling apparatus may include a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute an additional weight applied to the drilling apparatus against the bottom of the borehole without exceeding the compressive strength of the formation rock. | 05-19-2011 |
20110259604 | CASING AND LINER DRILLING SHOES HAVING INTEGRATED OPERATIONAL COMPONENTS, AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 10-27-2011 |
20110259605 | CASING AND LINER DRILLING SHOES HAVING SELECTED PROFILE GEOMETRIES, AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 10-27-2011 |
20110259606 | CASING SHOES HAVING DRILLABLE AND NON-DRILLABLE CUTTING ELEMENTS IN DIFFERENT REGIONS AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 10-27-2011 |
20110259608 | CASING AND LINER DRILLING SHOES WITH PORTIONS CONFIGURED TO FAIL RESPONSIVE TO PRESSURE, AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 10-27-2011 |
20110259643 | CASING AND LINER DRILLING SHOES HAVING SPIRAL BLADE CONFIGURATIONS, AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 10-27-2011 |
20110266069 | CASING SHOES INCLUDING CUTTING ELEMENTS, CUTTING ELEMENTS FOR EARTH-BORING TOOL, AND RELATED METHODS - A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough, is disclosed. Cutting elements and methods of use are disclosed. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element are disclosed. Differing abrasive material amount, characteristics, and size of cutting elements are disclosed. Telescoping casing sections and bits are disclosed. Aspects and embodiments are disclosed including: at least one gage section extending from a nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts. | 11-03-2011 |
20120024609 | DRILLING APPARATUS WITH REDUCED EXPOSURE OF CUTTERS AND METHODS OF DRILLING - A rotary drilling apparatus and method for drilling subterranean formations, including a body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation, so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per rotation of the drilling apparatus, as well as to control the amount of torque experienced by the drilling apparatus and an optionally associated bottomhole assembly regardless of the effective weight-on-bit are all disclosed. The exterior of the drilling apparatus may include a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute an additional weight applied to the drilling apparatus against the bottom of the borehole without exceeding the compressive strength of the formation rock. | 02-02-2012 |