Class / Patent application number | Description | Number of patent applications / Date published |
418048000 | UNLIKE HELICAL SURFACES ON RELATIVELY WOBBLING ROTATING MEMBER AND ENCOMPASSING CYLINDER (E.G., MOINEAU TYPE) | 63 |
20080199339 | SAFE BACKSPIN DEVICE - A safe backspin device is provided to prevent uncontrolled backspin during operation of a progressive cavity pump. The safe backspin device has a bore and in one embodiment a ball that seats within the bore that act as a check valve. The check valve allows for unrestricted fluid flow in a normal flow direction. Fluid bypass ports allow for a restricted and controlled flow of fluid when the fluid direction of the progressive cavity pump is reversed from the normal flow direction. The bypass ports may be angled to clear sand buildup around an intake of the progressive cavity pump and in an annulus outside of a safe backspin device within a wellbore. In alternative embodiments a flapper valve may be used instead of a ball. | 08-21-2008 |
20080267802 | FLUID-GUIDING AND ELECTRIC CONDUCTING SYSTEM FOR SUSPENDED ELECTRIC SUBMERSIBLE PROGRESSING CAVITY PUMP (PCP) - A fluid-guiding and electric conducting system for a suspended electric submersible PCP comprises a fluid-guiding system and an electric conducting system. The fluid-guiding system comprises an upper connector, a protector, a fluid-guiding sleeve, a driving mechanism, a shaft coupling, a first annular cavity, a second annular cavity, a third annular cavity, a fourth annular cavity, and a fluid outlet. The first annular cavity, the second annular cavity, the third annular cavity, the fourth annular cavity, and the fluid outlet are connected orderly to the well fluid pipe. The electric conducting system comprises a motor lead wire, a center hole of the protector, a fifth annular cavity, and a wire outlet. The fluid-guiding and electric conducting system has the advantages of simple structure, low manufacturing cost, easy assembly and inexpensive maintenance. | 10-30-2008 |
20080304991 | Moineu stator including a skeletal reinforcement - A Moineau style stator includes a helical cavity component having reinforced helical lobes. The lobes are reinforced with a three-dimensional network of physically bonded aggregate particles. The network of bonded aggregate provides a porous skeletal-like structural reinforcement. Pore volume between the bonded aggregate particles may optionally be partially or substantially filled with an elastomer. An elastomer liner is typically deployed on an inner surface of the helical lobes to promote a rotational interference fit with a rotor. | 12-11-2008 |
20080304992 | Braze or solder reinforced moineu stator - A Moineau style stator includes a helical reinforcement component that provides an internal helical cavity. A resilient liner is deployed on an inner surface of the helical reinforcement component. The helical reinforcement component includes a solder or braze material and is typically metallurgically bonded to an inner wall of a stator tube. In exemplary embodiments, the helical reinforcement component includes a composite mixture of solder and aggregate. Exemplary embodiments of this invention address the heat build up and subsequent elastomer breakdown in the lobes of prior arts stators by providing a helical reinforcement component. Solder reinforced stators tend to be less expensive to fabricate than reinforced stators of the prior art. | 12-11-2008 |
20080310981 | POSITIVE DISPLACEMENT FLOW SEPARATOR - A positive displacement flow separator contains a rotor portion positioned inside a casing portion to act as a least area rotor which captures a volume and moves the volume along the length of the separator. The rotor portion contains a plurality of lobes which interact with grooves in the casing portion, such that the interaction of the lobes and grooves create barriers which capture the volume The creation of the volume creates a flow barrier between a downstream end of the separator and an upstream end of the separator. The flow separator is coupled to a combustion portion to provide a flow of material to the combustion portion. | 12-18-2008 |
20080310982 | POSITIVE DISPLACEMENT FLOW SEPARATOR WITH COMBUSTOR - A positive displacement flow separator or combustor contains a rotor portion positioned inside a casing portion to act as a least area rotor which captures a volume and moves the volume along the length of the separator. The rotor portion contains a plurality of lobes which interact with grooves in the casing portion, such that the interaction of the lobes and grooves create barriers which capture the volume. The creation of the volume creates a flow barrier between a downstream end of the separator and an upstream end of the separator. | 12-18-2008 |
20090074599 | Stator Casing For Eccentric Worm Pumps - The invention relates to a stator casing for eccentric worm pumps comprising an elastic lining, the cylindrical stator casing having a surface on the inner side, along the longitudinal axis whereof grooves are incorporated. | 03-19-2009 |
20090110578 | PROGRESSING CAVITY PUMP WITH SPLIT STATOR - A progressing cavity pump system including a rotor and a stator having an inner cavity. The rotor is rotationally disposed inside the inner cavity of the stator such that rotation of the rotor relative to the stator causes material in the inner cavity to be pumped through the stator. The stator includes at least two radially separable stator portions such that when at least one of the stator portions is removed, at least one of the rotor or the inner cavity is exposed. | 04-30-2009 |
20090110579 | EQUAL WALL STATOR - A method for making a stator assembly including the steps of providing a generally cylindrical stator casing, hydroforming the stator casing into a generally helical shape, and positioning a stator liner having a generally helical shape inside the stator casing. | 04-30-2009 |
20090136371 | Progressing cavity pump assembly and method of operation - A progressing cavity pump assembly includes a collar assembly connecting a housing and a tubing string, with the collar having an inside diameter upset and the rotor having a rotor head axially spaced from a rotor helix, with the rotor head having an outer diameter forming a stop adapted to land on the inside diameter upset. A method of timing a progressing cavity pump assembly includes providing a collar assembly having an inside diameter upset, movably connecting the collar assembly and the housing, providing a rotor having a rotor head axially spaced from a rotor helix, with the rotor head having an outer diameter forming a stop, selectively adjusting the relative position of the collar assembly and the housing to form a pathway substantially corresponding to the rotor helix, landing the stop on the inside diameter upset, and fixing the relative position of the collar assembly and the housing. | 05-28-2009 |
20090169404 | HIGH TEMPERATURE PROGRESSIVE CAVITY MOTOR OR PUMP COMPONENT AND METHOD OF FABRICATION - The present application discloses a progressive cavity motor or pump component, either stator or rotor, which provides a high glass transition temperature polymeric surface on the component which becomes resilient at or below the expected operating temperature of the motor or pump, but which remains solid at ambient temperatures, along with a method of fabricating either a stator or a rotor with such surface characteristics. Since the surface becomes resilient, the progressive cavity pump operates efficiently at temperatures above the glass transition temperature of the selected polymeric surface. | 07-02-2009 |
20090214369 | ECCENTRIC SCREW PUMP - The invention relates to an eccentric screw pump with a annular outer part ( | 08-27-2009 |
20090220368 | POSITIVE DISPLACEMENT CAPTURE DEVICE AND METHOD OF BALANCING POSITIVE DISPLACEMENT CAPTURE DEVICES - A positive displacement capture apparatus contains a plurality of positive displacement capture devices which each contain a rotor portion positioned inside a casing portion to act as a least area rotor which captures a volume and moves the volume along the length of the separator. The rotor portion contains a plurality of lobes which interact with grooves in the casing portion, such that the interaction of the lobes and grooves create barriers which capture the volume. The creation of the volume creates a flow barrier between a downstream end of the separator and an upstream end of the separator. The flow separator is coupled to a combustion portion to provide a flow of material to the combustion portion. The plurality of positive displacement capture devices are positioned, oriented and rotational timed such that eccentric loads created by the rotation of the rotor portions cancel each other out during operation. | 09-03-2009 |
20090220369 | NON-CONTACT SEAL FOR POSITIVE DISPLACEMENT CAPTURE DEVICE - A positive displacement capture device contains a rotor portion positioned inside a casing portion to act as a least area rotor which captures a volume and moves the volume along the length of the separator. The rotor portion contains a plurality of lobes which interact with grooves in the casing portions such that the interaction of the lobes and grooves create barriers which capture the volume. The creation of the volume creates a flow barrier between a downstream end of the separator and an upstream end of the separator. The flow separator is coupled to a combustion portion to provide a flow of material to the combustion portion. There is a non-contact seal between the lobes and the grooves, and the lobes have channels or depressions at their ends. | 09-03-2009 |
20090252630 | Single-Shaft Eccentric Screw Pump - A double/triple-thread single-shaft eccentric screw pump is provided. The rotor of the pump overhangs little in comparison with the flange type connecting structure. The whole length of the pump is short, and the pump casing of the pump is short and small in diameter, so that the pump is small in size and light in weight. One end of a flexible rod is tapered and has a tapped hole formed at its axis. One end of the rotor has a tapered bore formed at its axis, into which the tapered end of the flexible rod is fitted. The rotor has a through bore formed at its axis, through which a tension bolt extends from the other end of the rotor. The tension bolt has a front threaded end, which is screwed into and fastened to the tapped hole of the flexible rod. | 10-08-2009 |
20100040498 | ROTOR DRIVE MECHANISM, ECCENTRIC SHAFT SEALING STRUCTURE, AND PUMP APPARATUS - To transfer and fill a fluid with high flow rate accuracy and a long operating life, and realize small size, light weight, low cost, and energy saving. | 02-18-2010 |
20100086425 | ELECTROFORMED STATOR TUBE FOR A PROGRESSING CAVITY APPARATUS - A method for use in producing a stator for a progressing cavity apparatus which includes the use of electroforming to produce the stator tube. A stator tube for a progressing cavity apparatus which is produced using electroforming and a stator for a progressing cavity apparatus which includes a stator tube produced using electroforming. | 04-08-2010 |
20100098569 | NANOCOMPOSITE MOINEAU DEVICE - A Moineau device includes a stator that interfaces to a rotor whereby fluid flows through cavities between the stator and rotor that progress axially as the rotor is rotated relative to the stator. At least one of the stator and the rotor is realized from a nanocomposite that includes a polymeric matrix with carbon nanotubes dispersed therein. | 04-22-2010 |
20100189585 | SCROLL COMPRESSOR - A scroll compressor includes first and second scroll members housed in a casing. The first scroll member has a fluid inlet and a first through hole spaced from the fluid inlet. A fluid introducing pipe is configured to connect to the first through hole. A piston, having an annular groove and a second through hole, is disposed in the first through hole and is biased toward the fluid introducing pipe. The piston is configured to shut an end of the first through hole when fluid pressure larger than the biasing force is introduced into the fluid introducing pipe and to open the end of the first through hole when fluid pressure smaller than the biasing force is introduced into the fluid introducing pipe. A piston ring is fitted into the annular groove of the piston and has a stepped fitting end. | 07-29-2010 |
20100196182 | ECCENTRIC SCREW PUMP WITH SPLIT STATOR - Eccentric worm pump with at least one stator ( | 08-05-2010 |
20100260636 | MOINEAU PUMP - A Moineau pump or Moineau compressor includes a conically designed inner ( | 10-14-2010 |
20100284842 | Method of producing a stator segment for a segmented stator of an eccentric screw pump - A method for producing a stator segment for a segmented stator of an eccentric screw pump or an eccentric screw motor, as well as a stator segment and a stator. A stator segment in an initial state is processed or machined with a linear cutter that removes material to provide the stator segment with a helical inner segment surface. | 11-11-2010 |
20100284843 | Stator for an eccentric screw pump or an eccentric screw motor and method of producing a stator - A stator and method of producing a stator for an eccentric screw pump or an eccentric screw motor, including an outer stator tube, at least one stator segment disposed within the outer stator tube, and at least one tube end portion that completes one end of the outer stator tube. A region of the tube end portion that in an axial direction follows the outer stator tube has a thickness that is greater than the thickness of the outer stator tube. The outer stator tube is radially deformed to produce a connection between the at least one stator segment and outer stator tube. | 11-11-2010 |
20100316518 | Progressing Cavity Pump/Motor - A progressing cavity pump/motor includes an upper stator tube ( | 12-16-2010 |
20100322808 | Progressing Cavity Pump/Motor - A progressing cavity pump/motor includes a stator tube ( | 12-23-2010 |
20100329913 | PROGRESSING CAVITY PUMP ADAPTED FOR PUMPING OF COMPRESSIBLE FLUIDS - A progressing cavity pump adapted for pumping of compressible fluids, comprising an inner rotor ( | 12-30-2010 |
20110020160 | Processing Cavity Pump and an Associated Pump Device - A progressing cavity pump comprises a stator having an inlet end for coupling to a fluid-receiving casing, the pump including an anchor element suitable for fastening the inlet end of the stator on a stationary support, and said inlet end and said anchor element including locking means for locking them together in rotation. | 01-27-2011 |
20110103989 | Progressing Cavity Pump Rubber Reinforcement Device for Rotor Alignment - A progressing cavity pump assembly utilizes a reinforced upper section of the stator rubber helix. The pump stator is located at the end of a string of tubing. The reinforced upper section of the stator rubber helix is strong enough, whether reinforced by mechanical means or by strengthening the rubber matrix chemically, so as not to allow the passage of a stop located above or on the top of the pump rotor. The rotor is lowered on a string of rods until the stop above or on top of the rotor lands onto the reinforced upper section of the stator rubber helix. The rotor is then repositioned away from the stator helix a predetermined distance before pump operation begins with rod string rotation. | 05-05-2011 |
20110116959 | STATORS FOR DOWNWHOLE MOTORS, METHODS FOR FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME - The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube, The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated. | 05-19-2011 |
20110116960 | STATOR INSERTS, METHODS OF FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME - The present invention recites a downhole motor and method of manufacture wherein a mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator is provided. A flexible sleeve is provided over the mandrel and the flexible sleeve and the mandrel are provided into a mold. Additionally, a reinforcing material is introduced into the mold to fill space between the flexible sleeve and the mold. Said material is then solidified to bond the reinforcing material and the flexible sleeve. The solidified reinforcing material and flexible sleeve are then removed from the mold such that a stator insert is fabricated. | 05-19-2011 |
20110116961 | STATORS FOR DOWNHOLE MOTORS, METHODS FOR FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME - The present invention recites a downhole motor and method of fabricating the same, wherein the method for fabricating a stator for a downhole motor includes the providing of a mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator and the application of a flexible sleeve over the mandrel. Additionally, a stator tube having an interior surface is provided and a bonding agent is applied to the interior surface of the stator tube. The flexible sleeve and the mandrel are placed in the stator tube and a reinforcing material is introduced into the stator tube to fill space between the flexible sleeve and the stator tube. The reinforcing material is solidified and serves to bond the reinforcing material to the flexible sleeve and the stator tube. | 05-19-2011 |
20110123380 | PUMP - A progressive cavity pump is provided, having a stator section and a rotor section axially aligned with and surrounded by the stator section, a drive shaft connection section and a suction chamber, arranged between the stator section and the drive shaft connection section; wherein the suction chamber is configured such that it can be disassembled without moving the stator section or the drive shaft connection section, thereby facilitating the performance of maintenance operations. | 05-26-2011 |
20110150685 | Stator to Housing Lock in a Progressing Cavity Pump - A reinforcing interface between the stator and its housing in a progressing cavity pump is created from ribs extending inwardly into the stator from the housing inner wall that can be longitudinally oriented or spirally oriented. Alternatively, the housing wall can have grooves into the inner wall that are made more bulbous further into the housing wall from the groove inlets so that when filled with stator material a long and continuous grip is obtained with either the wall groove embodiment or the internal rib embodiment. | 06-23-2011 |
20110150686 | PROGRESSIVE CAVITY HYDRAULIC MACHINE - This invention relates to machine-building, more specifically, to the design and manufacturing of positive displacement motors various embodiments of which are used for hydrocarbon production. | 06-23-2011 |
20110150687 | PROGRESSIVE CAVITY PUMP WITH INNER AND OUTER ROTORS - The invention relates to a progressive cavity pump comprising at least one inner rotor ( | 06-23-2011 |
20110182761 | STATOR FOR USE IN HELICOIDAL MOTOR - A stator for a helicoidal down-hole drilling motor is formed with a through-hole, in addition to the main stator bore. The through-hole can be a straight hole extending parallel to the axis of the stator, or a hole of helical form, the helix extending about the axis of the stator. The through-hole can be used to accommodate a communications cable extending through the through-hole, and/or the through-hole can be connected to a fluid supply. The stator is produced from metal-based powder by producing an insert of accurate dimensions corresponding to the dimensions of a bore to be created in the finished stator, the bore having a length of at least 750 mm, supporting the insert within a mould cavity, filling the mould cavity with metal-based powder, subjecting the powder to isostatic pressing, and subsequently removing the material of the insert. | 07-28-2011 |
20110243774 | UNDERCUT STATOR FOR A POSITIVE DISPLACMENT MOTOR - A Moineau style stator includes a stator tube having a plurality of rigid helical lobes formed on an inner surface thereof. The helical lobes define a major internal tube diameter that is greater than a pass through diameter of the tube such that the major diameter undercuts the pass through diameter of the tube. A major liner diameter may also be less than the pass through diameter so as to provide a suitable interference fit between rotor and stator. | 10-06-2011 |
20120034120 | ARRANGEMENT FOR HYDROCARBON EXTRACTION IN WELLS USING PROGRESSIVE CAVITY PUMPS - Arrangement for hydrocarbon extraction in wells using progressive cavity pumps which consists of a rotating tube located inside a fixed tube which extend along the well casing. The rotating tube carries fluid from the bottom of the well to the surface. Between the rotating tube and the fixed tube there is an “O” ring space into which an anti-friction lubricant is injected between the external face of the rotating tube and the internal face of the fixed tube. The bottom end of the rotating tube has a section holding holes through which fluid flows into it, it is connected to the progressive cavity pump by means of a rod, and its top end is connected to a production outlet and to its propelling motor mechanism. The upper section of the fixed tube is connected to an anti-friction lubricant injection pipe in the space left between the rotating and the fixed tubes. This arrangement prevents the wearing out, as a result of friction and corrosion, of conventional tubings used in field wells where fluid extraction is carried out by means of progressive cavity pumps. | 02-09-2012 |
20120039734 | ROTOR DRIVE MECHANISM AND PUMP APPARATUS INCLUDING THE SAME - The present invention provides a rotor drive mechanism capable of reducing the longitudinal size of a pump apparatus and the volume of a fluid accommodating space in a casing, and improving the accuracy of a discharge rate. | 02-16-2012 |
20120063941 | ECCENTRIC-SCREW PUMP - An eccentric-screw pump has an axially split stator having axially opposite intake and output ends and an elastomeric liner defining an axially throughgoing passage. Respective intake and output housings are releasably secured to the intake and output ends of the stator. An axially extending screw rotor in the passage has an end in the intake housing. A drive includes a rotatable universal joint having a pair of relatively swivelable parts in the intake housing. Respective generally complementary formations on the end of the rotor and on one of the universal-joint parts can fit axially together to rotationally couple the one universal-joint part with the rotor. A latch secures the formations axially together for angular force transmission between the one universal-joint part and the rotor. | 03-15-2012 |
20120134861 | DOWNHOLE MOTOR OR PUMP COMPONENTS, METHOD OF FABRICATION THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME - Exemplary embodiments provide a progressive cavity pump or motor including a stator having a longitudinal bore and a rotor rotatably disposed within the longitudinal bore of the stator. The rotor includes a rotor core and a resilient outer layer formed of a resilient material bonded onto the outer surface of the rotor core. The resilient outer layer sealably connects the helical configurations on the outer surfaces of the rotor and the stator as the rotor rotates within the longitudinal bore of the stator. | 05-31-2012 |
20120148432 | ENHANCED ELASTOMERIC STATOR INSERT VIA REINFORCING AGENT DISTRIBUTION AND ORIENTATION - A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods. | 06-14-2012 |
20120237380 | Downhole Backspin Retarder for Progressive Cavity Pump - A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft. | 09-20-2012 |
20120258001 | Progressing Cavity Pump/Motor - A progressing cavity pump/motor includes a stator ( | 10-11-2012 |
20130052067 | Downhole Motors and Pumps with Improved Stators and Methods of Making and Using Same - In one aspect, the disclosure provides an apparatus for use downhole that in one configuration includes a stator including a housing having an inner contour and a liner lining the inner contour of the stator housing, wherein thickness of the liner is non-equidistant around the inner contour of the housing. | 02-28-2013 |
20130064702 | Downhole Motors and Pumps with Asymmetric Lobes - In an aspect, the disclosure provides an apparatus for use downhole. In one aspect the apparatus includes a rotor with lobes disposed in stator with lobes, wherein at least one of the contours of the rotor lobe and the contour of the stator lobe is asymmetric. | 03-14-2013 |
20130224053 | Coaxial progressive cavity pump - This invention relates a progressive cavity pump with a central feed-through for supplying steam, gas or liquids to the supply side of the pump. For the oil industry this invention enables single well stimulation. Steam can be supplied from the surface to the production zone or below through the central feed-through, heating or pressurizing oil and the surrounding formation, and facilitating production. In heavy oil fields solvents can be pumped down as well. Oil can be pumped up by the progressive cavity pump through the annulus of the connecting coaxial pipe. | 08-29-2013 |
20130251572 | Methods and Apparatus for Enhancing Elastomeric Stator Insert Material Properties with Radiation - A method for manufacturing a stator for a progressive cavity motor or pump comprises (a) forming an elastomeric stator insert. In addition, the method comprises (b) exposing the elastomeric stator insert to ionizing radiation. Further, the method comprises (c) positioning the elastomeric stator insert in a stator housing to form a stator. | 09-26-2013 |
20130287616 | PROGRESSING CAVITY PUMP/MOTOR - A progressing cavity pump/motor includes a stator ( | 10-31-2013 |
20140134029 | Metal Stators - A stator for a helical gear device is formed from multiple rigid disks and support rings bonded to the disks. Each disk forms part of a profile consisting of radially equally spaced or opened lobes which interact with the convex portions of rotor lobes. The disks are arranged into a desired helical configuration and bonded to one another to form a disk stack defining a helically convoluted elongated chamber therein. The support rings are fixed concentrically against respective end disks of the disk stack. The rings are sized with an inside diameter substantially equal to the major diameter of the central aperture defined by the radially extending lobes of the rigid disks. As a rotor rotates and nutates inside the helically convoluted elongated chamber of the stator, it is supported at both ends of the disk stack by the support rings touching the tips of the rotor lobes. Thus the full force of the rotor's operational inertia is not borne by the disks alone, thereby increasing their life. | 05-15-2014 |
20140271300 | Progressive Cavity Pump/Motor Drive Mechanism - A progressing cavity pump has a rotor that moves in an eccentric motion, and is driven by a drive shaft that rotates about a fixed axis. Various means have been used to connect the two; mostly using an intermediate shaft called a connecting rod that has a universal joint at either end. This device replaces that with two parallel plates; one with several pins protruding from it, and the other with the same number of holes in it. The holes are sized to allow the eccentric motion of the rotor. There is also a ball between the two plates to transmit loads between the plates. | 09-18-2014 |
20140308145 | PROGRESSING CAVITY STATOR - Progressing cavity devices and systems are provided. In one embodiment, a system includes a metal stator of a progressing cavity device. The metal stator includes metal plates with apertures that are rotationally offset to form a winding rotor cavity. At least one of the apertures that form the winding rotor cavity has an elongated profile with enlarged ends having widths greater than that across the middle of the at least one aperture. Additional systems, devices, and methods are also disclosed. | 10-16-2014 |
20140377112 | NITROGEN- AND CERAMIC-SURFACE-TREATED COMPONENTS FOR DOWNHOLE MOTORS AND RELATED METHODS - Downhole motors include a stator, which may be formed from a steel material and comprise a bore. At least one surface of the stator may be treated with a surface treatment. The surface treatment includes a nitrided region comprising nitrogen diffused into the steel material and a ceramic material adjacent to the nitrided region; the ceramic material defining an interior surface of the stator defining the bore. Methods of making downhole motors may include exposing a stator to an elevated temperature to heat the stator in a nitrogen-rich environment. Nitrogen may be diffused into a steel material of the stator and a nitrided region may be formed at one or more surfaces of the stator. The stator may be cooled. The stator may be removed from the nitrogen-rich environment. A ceramic material may be coated on the nitrided region of the stator. | 12-25-2014 |
20150064037 | HELICAL ROTOR, PROGRESSING CAVITY PUMP AND PUMPING DEVICE - A helical rotor intended to be arranged in a progressing cavity pump, said progressing cavity pump being capable of pumping a multiphase fluid from a fluid reserve, the helical rotor comprising at least one mixer capable of homogenizing the multiphase fluid located in said fluid reserve. | 03-05-2015 |
20150125329 | PROGRESSING CAVITY PUMP/MOTOR - A progressing cavity pump/motor includes a stator ( | 05-07-2015 |
20150139842 | PROGRESSIVE CAVITY PUMP - A progressive cavity pump comprising a casing, a helical stator including a helical cylinder and a helical rotor capable of rotating inside said helical cylinder. The helical stator also comprises at least one compensator arranged in said casing, between the casing and said helical cylinder; said helical cylinder and said compensator being deformable in a direction perpendicular to the longitudinal axis of the casing. | 05-21-2015 |
20150316052 | NITROGEN- AND CERAMIC-SURFACE-TREATED COMPONENTS FOR DOWNHOLE MOTORS AND RELATED METHODS - Downhole tools for earth-boring applications may include a component of a steel material and including a bore. An inner surface defining the bore may be treated with a surface treatment. The surface treatment may include a nitrided region having nitrogen diffused into the steel material and a ceramic material adjacent to the nitrided region; the ceramic material defining the inner surface. Methods of making downhole tools for earth-boring applications may involve exposing a component of the downhole tool to an elevated temperature to heat the component in a nitrogen-rich environment. Nitrogen may be diffused into a steel material of the component and a nitrided region may be formed at one or more surfaces of the component. A ceramic material may be coated on the nitrided region of the component. | 11-05-2015 |
20160017711 | Stator for Progressive Cavity Pump/Motor - A stator for a progressive cavity pump or motor includes a stator housing having a longitudinal axis. In addition, the stator includes a stator insert of a material moulded within the housing. The stator housing includes an outer tube having an inner surface. The stator housing also includes a plurality of framework elements disposed on the inner surface of the outer tube. Further, the stator housing includes at least one recess in the inner surface of the outer tube. The conjunction of the framework elements and the at least one recess define a plurality of chambers receiving insert material therein whereby the insert material is mechanically fixed axially, radially and torsionally within the outer tube. | 01-21-2016 |
20160084085 | STATOR FOR A FEED PUMP | 03-24-2016 |
20160097280 | ARTIFICIAL LIFTING SYSTEM WITH BASE-MOUNTED PROGRESSIVE CAVITY MOTOR FOR EXTRACTING HYDROCARBONS - The invention relates to an artificial lifting system comprising a progressive cavity motor for hydrocarbon's extraction. In the invention's system a pump injects a fluid stored in the surface to the progressive cavity motor, located in the basement; the rotation that occurs by the passage of fluid is transmitted to a progressive cavity pump such that the hydrocarbon is pushed toward the surface. | 04-07-2016 |
20160186748 | FLOW RESTRICTOR FOR A MUD MOTOR - An assembly to restrict fluid flow through the bearing section of a positive displacement or progressive cavity pump or motor. The assembly fits within the bearing chamber and includes an upper ring member, a lower ring member, an outer ring member and a floating member. The floating ring member is axially disposed between the upper and lower ring members. The floating ring member is also disposed at least partially around a drive shaft and is radially movable and constrained inwardly of the outer ring member. The floating ring member has a radial clearance between the drive shaft and a floating ring member inner surface with the radial clearance varying depending on the relative position of the floating ring member to the outer ring member. | 06-30-2016 |
20160186749 | IMPROVED STATOR ASSEMBLY FOR PROGRESSIVE CAVITY PUMPING SYSTEMS - A stator for use in a progressive cavity pump is provided, comprising a housing having a suction end and a discharge end, and an elastomeric liner disposed within the housing that defines a passageway for receiving a rotor of the pump. The elastomeric liner comprises a reinforced component that is proximate to the discharge end and that provides a landing surface to resist passage of a rotor head through the passageway. | 06-30-2016 |
20190145374 | Load Balanced Power Section of Progressing Cavity Device | 05-16-2019 |