| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175027000 | Of advance or applied tool weight | 50 |
| 20090126994 | Method And System For Controlling Force In A Down-Hole Drilling Operation - A method and system of subterranean excavating that estimates a buoyancy force applied to a downhole excavating system from drilling fluid. The estimated buoyancy force is used to derive a true weight on bit (WOB) at the borehole bottom. The derived realized WOB is compared to a target WOB to obtain a change in WOB. Based on the change in WOB, the excavating system is adjusted so the realized WOB approximates the target WOB. The excavating system adjustment includes applying a compensating force to the string. Compensating forces can be produced by manipulating a block assembly or deploying a thruster device in the string. | 05-21-2009 |
| 20090266608 | TORSIONAL RESONANCE PREVENTION - According to the invention, a system for drilling a cavity in a medium is disclosed. The system may include a drill bit, a processor, and a controller. The drill bit may be configured to rotate in the medium and remove at least a portion of the medium. The processor may be configured to receive a first set of data representative of a variable rotational speed of the drill bit during a length of time in the medium, and determine, based at least in part on the first set of data, a first resonant frequency of the variable rotational speed of the drill bit. The controller may be configured to receive a second set of data representative of the first resonant frequency of the variable rotational speed of the drill bit, and vary the force applied to the drill bit based at least in part on the second set of data. | 10-29-2009 |
| 20100006338 | OPTIMIZED REAMING SYSTEM BASED UPON WEIGHT ON TOOL - A drilling apparatus includes a tubular body including an upper connection and a lower connection with a drill bit disposed thereon, and an axial borehole therethrough, wherein the upper connection is configured to attach to a drillstring, primary cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom. The drilling apparatus further includes backup cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom, and an activation system configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks. | 01-14-2010 |
| 20100025110 | SYSTEM AND METHOD FOR CONTROLLING THE INTEGRITY OF A DRILLING SYSTEM - A system for monitoring and controlling a load on a downhole component of a well drilling system is disclosed. The system includes: a downhole tool disposed in a drillstring and configured to be movable within a borehole, the drillstring configured to allow a drilling fluid to be advanced therethrough and into the borehole; at least one sensor disposed within the downhole tool for in-situ measurement of at least one physicochemical property of an environment surrounding the downhole tool; and a processor configured to monitor the at least one physicochemical property and at least one of i) provide physicochemical property information to a user during a drilling/steering operation, ii) adjust a load on the downhole component based on the environment information and iii) shut down the system in response to a detection of a measured physicochemical property beyond a selected threshold. | 02-04-2010 |
| 20100089644 | Drilling tool and drilling method - A drilling tool includes a hydraulically driven device ( | 04-15-2010 |
| 20100108384 | ADAPTIVE DRILLING CONTROL SYSTEM - A system for optimizing a rate-of-penetration of a drill string, the system including: a plurality of sensors in operable communication with the drill string; and a controller in operable communication with the plurality of sensors, the controller connectable to a drill string motivator and capable of outputting a signal to the drill string motivator for optimizing the rate-of-penetration of the drill string, the signal configured to provide at least one of weight on bit, an amount of speed to rotate the drill string, an amount of torque to be applied to the drill string, and an amount of mudflow to the drill string. | 05-06-2010 |
| 20100307824 | Automatic Control System For Connecting A Dual-Member Pipe - A system and method of making up and breaking out a dual-member drill string. The system comprises a spindle, a spindle carriage and a drive frame. The drive frame provides thrust to the spindle, while the spindle carriage provides rotation. The spindle has an outer spindle and an inner spindle, and is adapted to connect to a pipe section having an outer pipe section and an inner pipe section. Inner joints are geometrically shaped, while outer joints are threaded. When making up dual member drill string, the spindle is advanced, with the outer spindle rotating, and the inner spindle rotating in alternating directions, or “dithering.” A float sensor and a processor are used in tandem to cooperatively couple the inner spindle with the inner pipe sections and the outer spindle with the outer pipe sections. | 12-09-2010 |
| 20110031015 | SYSTEM AND METHOD FOR MANAGING AND/OR USING DATA FOR TOOLS IN A WELLBORE - A system and a method manage and use data related to a wellbore or a drill string. The system and the method may provide remote access to tools in a drill string using a network. In addition, the tools have access to the data. In a disclosed embodiment, the tools are able to automatically access the data needed to optimize or improve function of the tools. An example of the network is a wireless network where the tools may be monitored and/or controlled remotely by an application. A linking tool is optionally provided to communicate with the network and one or more of the tools. | 02-10-2011 |
| 20110174540 | DRAW-WORKS FOR MANEUVERING OF DRILLING DEVICES - A draw-works ( | 07-21-2011 |
| 20110174541 | Method and System for Predicting Performance of a Drilling System - A system for drilling a well comprises a drill string in a wellbore having a bit at a distal end thereof. At least one sensor measures a drilling parameter. A computer controller has a set of instructions stored therein to process the measured drilling parameter over a drilled interval to calculate, in substantially real time, an updated friction slope and an updated worn bit slope and to calculate an updated drilling parameter for at least a portion of the well-based on the updated friction slope and the updated worn bit slope. | 07-21-2011 |
| 20110226530 | METHODS AND SYSTEMS FOR TRIPPING PIPE - Methods of adjusting a velocity at which a drill string is moved within a well are provided. One method includes adjusting the velocity at which the drill string is moved within the well based upon a hookload associated therewith. Another method includes adjusting the velocity at which the drill string is moved within the well based upon the actual velocity at which the drill string is moved within the well. Another method includes adjusting the velocity at which the drill string is moved within the well based upon the volume of fluid displaced by the drill string flowing from the well as it is lowered into the well. | 09-22-2011 |
| 20110278065 | Automatic Control System For Connecting A Dual-Member Pipe - A system and method of making up and breaking out a dual-member drill string. The system comprises a spindle, a spindle carriage and a drive frame. The drive frame provides thrust to the spindle, while the spindle carriage provides rotation. The spindle has an outer spindle and an inner spindle, and is adapted to connect to a pipe section having an outer pipe section and an inner pipe section. Inner joints are geometrically shaped, while outer joints are threaded. When making up dual member drill string, the spindle is advanced, with the outer spindle rotating, and the inner spindle rotating in alternating directions, or “dithering.” A float sensor and a processor are used in tandem to cooperatively couple the inner spindle with the inner pipe sections and the outer spindle with the outer pipe sections. | 11-17-2011 |
| 20120097449 | Method And Apparatus For Controlling Rock Drilling - Method and apparatus for controlling rock drilling with a percussion device belonging to a rock drill to deliver stress waves to rock through a tool by pushing the tool against the rock by means of a feed motor and rotating simultaneously the tool by means of a rotation motor, whereby the maximum feed force is determined, pressure medium is supplied to the feed motor and to the rotation motor and the feed force is controlled according to the drilling conditions. The feed force is controlled on the basis of the feed speed and the rotation torque. The apparatus has a load control valve which controls the feed. | 04-26-2012 |
| 20120145455 | ANTI-STALL TOOL FOR DOWNHOLE DRILLING ASSEMBLIES - An anti-stall tool in an oil well drilling assembly that controls reciprocation of the drill bit by a controller that alters weight-on-bit (WOB) depending upon measured downhole pressure or torque at the downhole motor. The controller receives preset high and low working pressure limits for the downhole motor and keeps the drill bit rotating by maintaining WOB during normal drilling operations, increasing WOB if sensed working pressure indicates that drill bit loading or torque is undesirably low, and reversing WOB by retracting the drill bit if excessive working pressure or torque is sensed. | 06-14-2012 |
| 20120255779 | Automatic Control System For Connecting A Dual-Member Pipe - A system and method of making up and breaking out a dual-member drill string. The system comprises a spindle, a spindle carriage and a drive frame. The drive frame provides thrust to the spindle, while the spindle carriage provides rotation. The spindle has an outer spindle and an inner spindle, and is adapted to connect to a pipe section having an outer pipe section and an inner pipe section. Inner joints are geometrically shaped, while outer joints are threaded. When making up dual member drill string, the spindle is advanced, with the outer spindle rotating, and the inner spindle rotating in alternating directions, or “dithering.” A float sensor and a processor are used in tandem to cooperatively couple the inner spindle with the inner pipe sections and the outer spindle with the outer pipe sections. | 10-11-2012 |
| 20130032402 | ADAPTIVE DRILLING CONTROL SYSTEM - A system for optimizing a rate-of-penetration of a drill string includes a plurality of sensors in operable communication with the drill string and a controller in operable communication with the plurality of sensors. The controller is connectable to a downhole active vibration control device and capable of outputting a signal to the downhole active vibration control device for optimizing the rate-of-penetration of the drill string. | 02-07-2013 |
| 20130075156 | Control System for a Machine for Digging and/or Drilling Soil and Digging and/or Drilling Machine Including Such a System - Control system ( | 03-28-2013 |
| 20130098682 | OPTIMIZED REAMING SYSTEM BASED UPON WEIGHT ON TOOL - A drilling apparatus includes a tubular body including an upper connection and a lower connection with a drill bit disposed thereon, and an axial borehole therethrough, wherein the upper connection is configured to attach to a drillstring, primary cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom. The drilling apparatus further includes backup cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom, and an activation system configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks. | 04-25-2013 |
| 20130105220 | SYSTEM AND METHOD FOR TORQUE STABILIZATION OF A DRILLING SYSTEM | 05-02-2013 |
| 20130146358 | PROCESSES AND SYSTEMS FOR DRILLING A BOREHOLE - Processes and systems for drilling a borehole wherein a gravitational energy term, a torsional energy term, a hydraulic energy term and a hydromechanical specific energy which is the sum thereof may be determined using real-time data and compared against corresponding setpoints. The hydraulic energy term may include a hydraulic energy reduction factor so as to account for the distance between the fluid nozzle of the drill bit and the rock and may include the kinematic viscosity of drilling fluid. One or more drilling parameters, such as weight on bit, revolutions per minute, drilling fluid flow rate, or combinations thereof, may be adjusted based upon such comparison to approximate the least amount of energy required to destroy and remove a given unit volume of rock. The setpoints may be changed manually or automatically at the direction of the user. | 06-13-2013 |
| 20130277111 | METHODS AND SYSTEMS FOR DRILLING - A method of automatically placing a drill bit used to form an opening in a subsurface formation on a bottom of the opening being formed comprises a) increasing a flow rate in a drill string to a target flow; b) controlling a flow rate of fluid into the drill string to be substantially the same as a flowrate of fluid out of the opening; c) allowing a fluid pressure to reach a relatively steady state; and d) automatically moving the drill bit toward the bottom of the opening at a selected rate of advance until an increase in measured differential pressure indicates that the drill bit is at the bottom of the opening. | 10-24-2013 |
| 20130277112 | METHODS AND SYSTEMS FOR DRILLING - A method of automatically picking up a drill bit off the bottom of an opening in a subsurface formation, comprises a) setting a predetermined level of differential pressure across a mud motor at which pickup of the drill bit is to be initiated; b) monitoring the differential pressure across the mud motor; c) allowing differential pressure across the mud motor to decrease to the predetermined level; and d) when the predetermined level is reached, automatically picking up the drill bit. | 10-24-2013 |
| 20140060931 | Systems and Methods for Automatic Drilling of Wellbores - The invention provides a system for automatic control of the drilling an oil well. The system includes an autodrilling interface enabling parameter input data to be input and enabling the display of system output data, a controller, a hydraulic control system and at least one sensor configured to the hydraulic control system. The controller receives parameter input data from the autodrilling interface and at least one sensor and provides output instructions to the hydraulic control system such that the hydraulic control system operates to control drilling based on controller instructions and sensor data. | 03-06-2014 |
| 20140131099 | System And Method For Managing And/Or Using Data For Tools In A Wellbore - A system and a method manage and use data related to a wellbore or a drill string. The system and the method may provide remote access to tools in a drill string using a network. In addition, the tools have access to the data. In a disclosed embodiment, the tools are able to automatically access the data needed to optimize or improve function of the tools. | 05-15-2014 |
| 20140151121 | AUTOMATED DIRECTIONAL DRILLING APPARATUS AND METHODS - Methods and systems for drilling to a target location include a control system that receives an input comprising a planned drilling path to a target location and determines a projected location of a bottom hole assembly of a drilling system. The projected location of the bottom hole assembly is compared to the planned drilling path to determine a deviation amount. A modified drilling path is created to the target location as selected based on the amount of deviation from the planned drilling path, and drilling rig control signals that steer the bottom hole assembly of the drilling system to the target location along the modified drilling path are generated to intersect the planned drilling path if the amount of deviation from the planned path exceeds a first threshold amount of deviation. | 06-05-2014 |
| 20140190747 | SYSTEM AND METHOD FOR AUTOMATIC WEIGHT-ON-BIT SENSOR CALIBRATION - A system and method for automatic weight-on-bit sensor calibration is described. Embodiments of the invention automatically compensate the measurements of a weight-on-bit sensor based on one or more of mass, hole inclination, buoyancy, drag, and mud flow, resulting in a more accurate axial force measurement below the weight-on-bit sensor at various hole inclinations. This measurement is observed by removing some of the effects masking the actual force being applied to the axial face of the drill bit. | 07-10-2014 |
| 20140196949 | AUTODRILLER SYSTEM - An autodriller provides an automatic self calibration system to predict both axial and rotational friction coefficients from the surface measurements such as hookload and surface torque while a drill bit is off bottom. The friction coefficients are used to calculate the friction forces between drillstring and the wellbore while the bit is on bottom during drilling operation to estimate downhole weight on the bit and bit torque, and use the estimates to alter the drilling process. | 07-17-2014 |
| 20140196950 | Path Tracking for Directional Drilling as Applied to Attitude Hold and Trajectory Following - A method for directional control of a drilling system, having steps of using an inclination and azimuth hold system to develop a path to be followed by the drilling system, wherein the inclination and azimuth hold system calculates an inclination angle of a tool face and an azimuth angle of the tool, generating a set point attitude to establish the path to be followed by the drilling system and controlling the drilling system to drill along the path obtained by the inclination and azimuth hold system. | 07-17-2014 |
| 20140202766 | METHOD AND APPARATUS FOR DRILLING SUBTERRANEAN BOREHOLE - A method of drilling a subterranean bore hole comprising a) pumping a drilling fluid down a drill string, the drill string having a drill bit at an end thereof, b) rotating the drill string about its longitudinal axis to that the bit forms bore hole in the ground, the method further comprising the steps of: c) changing the rate of pumping of the drilling fluid into the drill string in response to a change in the speed of rotation of the drill string, and/or changing the speed of rotation of the drill string in response to a change in the rate of pumping of the drilling fluid into the drill string. | 07-24-2014 |
| 20140209383 | CONTROL SYSTEM FOR DOWNHOLE OPERATIONS - A method of controlling a downhole operation includes: deploying a work string into a wellbore, the work string comprising a deployment string and a bottomhole assembly (BHA); digitally marking a depth of the BHA; and using the digital mark to perform the downhole operation. | 07-31-2014 |
| 20140262509 | IMAGING UNDERGROUND OBJECTS USING SPATIAL SAMPLING CUSTOMIZATION - A system includes a drill string to which a sensor is attached, a rotation unit configured to rotate the drill string, and a displacement unit configured to longitudinally displace the drill string. A processor is coupled to the rotation and displacement units. The processor is configured to coordinate sampling, by the sensor, of three-dimensional space surrounding the sensor while rotating and displacing the drill string. The processor is further configured to coordinate adjusting of at least one of drill string rotation and drill string displacement so that acceptable spatial sampling of the space surrounding the sensor is achieved. | 09-18-2014 |
| 20140305702 | WAVEFORM ANTI-STICK SLIP SYSTEM AND METHOD - The present disclosure is directed to systems and methods for rotating a drill string to overcome issues related to static friction during drilling. An embodiment includes a drive system configured to rotate the drill string through variable angular displacements and at variable rotation speeds based on control signals received by the drive system, and a control system configured transmit the control signals to the drive system, wherein the control system is configured to generate the control signals based on pipe characteristics within the drill string and friction values associated with the drill string to establish a rotation pattern of the drive system to approach a desired effective reach of surface torque generated by the drive system on the drill string. | 10-16-2014 |
| 20140311801 | Drill Bit with Self-Adjusting Pads - In one aspect, a drill bit is disclosed that in one embodiment includes a bit body and a pad that extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | 10-23-2014 |
| 20140338974 | ACTIVE CONTROL OF DRILL BIT WALKING - An apparatus for drilling a borehole into an earth formation includes: a drill bit configured to be rotated to drill into the formation; a drill tubular coupled to the drill bit and configured to rotate the drill bit; a steering device coupled to the drill string and configured to impart a force on the drill string to control a direction of drilling; and a controller configured to communicate a control signal to the steering device. The control signal includes information for directing actuation of the steering device for steering the drill bit in an intended drilling direction. The controller is further configured to direct the steering device to provide a compensating force on the drill string that prevents or reduces an azimuthal deviation from the intended drilling direction due to drill bit walking. | 11-20-2014 |
| 20140353033 | AUTOMATED DRILLING SYSTEM - A drilling system comprises a drilling parameter sensor in communication with a sensor application | 12-04-2014 |
| 20140353034 | Devices and Methods for Horizontal Directional Drilling with a Boring Tool Library - Various embodiments are directed to a method and apparatus for horizontal directional drilling with a tool library. Various methods include storing a plurality of operational tool profiles in memory, the operational tool profiles of the plurality respectively associated with a plurality of boring tools attachable to a drill string for HHD and each of the operational tool profiles of the plurality including operating parameters for the boring tool of the plurality with which the operational profile is associated, and selectively displaying the operational tool profiles on a display screen based on user input. | 12-04-2014 |
| 20150101864 | INTELLIGENT REAMER FOR ROTARY/SLIDING DRILLING SYSTEM AND METHOD - A downhole intelligent reamer controller detects the difference between rotary drilling and sliding drilling, responds appropriately and quickly to multiple changes between rotary drilling and sliding drilling that may occur several times each stand of pipe. Additional controls prevent deployment of reamer members at inappropriate times such as when drilling out cement, testing, and running in and out of the wellbore. In one embodiment, a separate modular control sub is disclosed that may be utilized with and/or removably secured to an expandable reamer and/or other types of downhole tools. | 04-16-2015 |
| 20150107899 | AUTOMATED CONTROL OF TOOLFACE WHILE SLIDE DRILLING - Apparatuses, systems, and methods for controlling slide drilling on a drilling rig are described. The methods include detecting current differential pressure of a mud motor and/or weight on bit (WOB) at a surface of a borehole, predicting current reactive torque of the mud motor based on the current differential pressure and/or WOB, and automatically adjusting surface torque and/or angular offset of a tubular adjacent the surface to counteract the current reactive torque and to keep the mud motor at a desired toolface orientation in the borehole. | 04-23-2015 |
| 20150322767 | Systems and Methods of Adjusting Weight on Bit and Balancing Phase - Disclosed are systems and methods of balancing weight distribution between downhole cutting tools. One system includes a drill bit arranged at a distal end of the bottom-hole assembly, a first sensor sub arranged proximate to the drill bit and configured to monitor one or more operational parameters corresponding to the drill bit, a reamer axially-offset from the drill bit on the bottom-hole assembly, a second sensor sub arranged proximate to the reamer and configured to monitor one or more operational parameters of the reamer, and a communications module communicably coupled to the first and second sensor subs and configured to communicate one or more corrective action signals when the one or more operational parameters of the drill bit and the reamer surpass a predetermined operating threshold. | 11-12-2015 |
| 20150345262 | AUTOMATED DRILLNG OPTIMIZATION - A method implemented by a processor for drilling a borehole includes: inputting drilling parameters used to drill one or more offset boreholes, rate of penetration for the one or more offset boreholes, and one or more lithologies for the one or more offset boreholes; identifying those drilling parameters that correspond to a rate of penetration (ROP) that meets or exceeds a selected ROP threshold for each input lithology; correlating a borehole plan comprising a borehole path to be drilled and one or more assumed lithologies as a function of depth to the one or more lithologies of the one or more offset boreholes; sending the identified drilling parameters to a drill rig controller for each of the assumed lithologies in the borehole plan; and drilling the borehole with the drill rig using the identified drilling parameters for each of the one or more assumed lithologies in the borehole plan. | 12-03-2015 |
| 20150361725 | Directional Drilling Control Devices And Methods - The instant invention provides apparatus and methods for directional drilling. One embodiment of the invention provides a drill control system including an uphole control device and a downhole control device. The uphole control device is configured to: transmit a reference trajectory to the downhole control device and receive information about an actual trajectory from the downhole control device. The downhole control device is configured to: receive the reference trajectory from the uphole control device, measure the actual trajectory, correct deviations between the reference trajectory and the actual trajectory, and transmit information about the actual trajectory to the uphole control device. | 12-17-2015 |
| 20160032658 | DRILL BIT WITH SELF-ADJUSTING GAGE PADS - A drill bit and a method of drilling a wellbore utilizing the drill bit is disclosed, including: providing a drill bit including a bit body and at least one movable member associated with a lateral extent of the bit body; conveying a drill string into a formation, the drill string having the drill bit at the end thereof; drilling the wellbore using the drill string; selectively extending the at least one moveable member from the lateral extent of the bit body at a first rate; and selectively retracting the at least one moveable member to a retracted position at a second rate that is less than the first rate. | 02-04-2016 |
| 20160090831 | Auger Boring Machine - An electric auger-boring machine. The machine has electric motors for auger rotation and thrust. The electric rotation motor rotates the auger at a constant rate when the current provided is constant. The motor may slow or stop in response to changes in torque due to obstructions to auger rotation. Electric motors allow for auger thrusters and actuators to precisely operate. A wireless remote control controls motor and auger rotation and thrust from a distance away from a launch pit. Multiple sizes of product casings may be utilized and the auger-boring machine comprises an adjustable adaptor and saddle for use with a plurality of casing sizes. | 03-31-2016 |
| 20160090832 | ELECTRICAL CONTROLLER FOR ANTI-STALL TOOLS FOR DOWNHOLE DRILLING ASSEMBLIES AND METHOD OF DRILLING OPTIMIZATION BY DOWNHOLE DEVICES - A method of operating a bottom hole assembly having a drill pipe, an anti-stall tool, a motor and a drill bit in real-time including entering an upper torque threshold and a lower torque threshold as operating parameters for the bottom hole assembly into the anti-stall tool, continuously sensing torque of the bottom hole assembly by a torque sensor in the bottom hole assembly, electronically determining if the sensed torque has exceeded the upper torque threshold or the lower torque threshold for a specified duration of time requiring an intervention by the anti-stall tool, and communicating instructions to the anti-stall tool for proper hydro-mechanical adjustment of the anti-stall tool. | 03-31-2016 |
| 20160115776 | METHOD AND SYSTEM TO DRILL OUT WELL COMPLETION PLUGS - A system for controlling load on a downhole tool for drilling out wellbore plugs is provided. The system includes a downhole drilling tool connected with a drill string extending within a cased wellbore. A drilling fluid flows into a casing space of the cased wellbore from the downhole drilling tool or a distal end outlet of the drill string. A fluid back pressure system comprising a variable flow restriction device applies flow restriction in the casing space to restrict fluid flow therein. At least one sensor measures a drilling fluid pressure within the drill string and at least one second sensor measures the casing fluid pressure. A processor is adapted to monitor the drilling fluid pressure and the casing space fluid pressure during a drilling operation to adjust a mechanical load on the downhole drilling tool to drill out wellbore plugs based on a difference pressure value between the drilling fluid pressure and the casing space fluid pressure. | 04-28-2016 |
| 20160115778 | ADAPTIVE DRILLING VIBRATION DIAGNOSTICS - The disclosure relates to an adaptive system for diagnosing vibrations during drilling including a drilling assembly at least partially located in a wellbore, a sensor located in the wellbore, and a data processing unit. The drilling assembly may drill the wellbore. The sensor may detect high frequency data reflecting vibrations in the drilling assembly. The data processing unit may execute a classification model based on machine learning techniques which uses features extracted from the high frequency data to diagnose the type or intensity of a vibration or both in the drilling assembly. The disclosure further relates to an adaptive method of diagnosing vibrations during drilling by collecting high frequency data reflecting vibrations in a drilling assembly, extracting at least one feature from the high frequency data, and diagnosing the type of vibration using the at least one extracted feature and a classification model based on machine learning techniques. | 04-28-2016 |
| 20160138340 | ADVANCED STEERING TOOL SYSTEM, METHOD AND APPARATUS - A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of spaced apart positions along the bore, each position is characterized by a measured extension of the drill string. The steering tool further includes a receiver. At least one marker is positioned proximate to the intended path, for transmitting a rotating dipole field to expose a portion of the intended path to the field for reception by the receiver. The detected pitch orientation, the detected yaw orientation and the measured extension of the drill string are used in conjunction with magnetic information from the receiver to locate the steering tool. The steering tool may automatically use the magnetic information when it is available. A customized overall position determination accuracy can be provided along the intended path. | 05-19-2016 |
| 20160160567 | Steerable Drill Bit System - A steerable drilling system in accordance to an embodiment includes a bias unit integrated with the drill bit to form a steering head and an electronic control system located remote from the steering head and electrically connected to a digital valve of the bias unit. | 06-09-2016 |
| 20160251953 | RATIO-BASED MODE SWITCHING FOR OPTIMIZING WEIGHT-ON-BIT | 09-01-2016 |
| 20160251954 | ESTIMATION AND CALIBRATION OF DOWNHOLE BUCKLING CONDITIONS | 09-01-2016 |
