Schlumberger Technology Corporation

Other

Smith International, Inc.

The Texas A&m University System

Lawrence C Lee

Ashley C Kishino

Michael H Du

Arunkumar Arumugam

Peter Thomas Cariveau

Geoffrey Charles Downton

Lance D Underwood

Gokturk Tunc

Maxim Pushkarev

Brian P Jarvis

William E Murray

Andrei Plop

Brian Williams

Daniel D Alvarado

Nigel Wilcox

Warren E Askew

Shunetsu Onodera

Shun'etsu Onodera

Anthony Frank Veneruso

Magnus A Hook

Thomas H Zimmerman

Steven E Buchanan

Olivier Sindt

Kenneth L Havlinek

Michael Shepherd

Grigory L Arauz

Robert Ian Robson

Eric L Brown

Norman Ward

W Keith Russell

Techniques involve a motor assembly including a rotor and a stator. The stator includes a contact surface for contacting an outer surface of the rotor. The contact surface includes a rigid material. The motor assembly also includes at least one constraint disposed along a length of the motor assembly, where the constraint constrains a radial and/or tangential movement of the rotor relative to the stator. The at least one constraint may be disposed at one or more proximate ends of the motor assembly, and/or along the length of the motor assembly. The contact surface of the stator may have a profile including peaks and valleys, and in some embodiments, the contact surface may be treated to reduce friction and/or wear.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Techniques relate to a moving cavity motor or pump, such as a mud motor, including a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch. The motor may include a top sub, power section having a progressive cavity motor with a stator and rotor, a rotor catch, and an apparatus between a proximal and distal end of the rotor catch shaft. The apparatus may constrain the radial and/or tangential movement of the rotor catch shaft and the rotor.

Positive displacement motor with radially constrained rotor catch

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch.

A system and method is used to protect a motor of a submersible pumping system. A variety of motor protector features are provided to facilitate operation of the motor protector and submersible pumping system in multiple wellbore environments and applications.

Protector for electrical submersible pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

A skinned rotoror skinned statorof a progressive cavity apparatus is described. A rotorcan be skinned by threading a sleevewith a profiled helical outerand profiled helical innersurface onto a corewith a profiled helical outer surface. A rotor () can also be skinned by inserting a non-helical core () into a non-helical longitudinal bore () of a sleeve () with a profiled helical outer surface (). A statorcan be skinned by threading a tubular linerwith profiled helical innerand profiled helical outersurfaces into a profiled helical boreof a tube. A stator () can also be skinned by inserting a tubular liner () with a non-helical outer surface () into a non-helical bore () of a tube ().

Skinning of progressive cavity apparatus

A system and method for protecting a motor for a submersible pumping system. A variety of motor protectors are provided for application in variable temperature environments and multiple wellbore orientations. The motor protectors may include one or more of a positively pressurized bellows, a relatively balanced pressure bellows free of sliding seals, and a multi-orientable labyrinth. Each of these motor protectors also may have various moisture absorbents, filters, particle shedders and various conventional motor protector components.

A method of immunomodulating the T cell response in Staphylococcal bacteria is provided wherein an effective amount of the Map protein fromis administered to a host to prevent or suppress the T cell response. The present method may be utilized with either the Map protein or an effective subdomain or fragment thereof such as the Map 10 or Map 19 protein. The present invention is advantageous in that suppression or prevention of the T cell response in a host can prevent or ameliorate a wide variety of the pathogenic conditions such as T cell lymphoproliferative disease and toxic shock syndrome wherein the overstimulation of T cells needs to be suppressed or modulated.

[object Object]

An integrated pumping system for use in environments, such as subterranean environments, to move a desired fluid from one location to another. The integrated pumping system comprises one or more stages that each have an integrated pump and motor. A controller may be utilized to individually control the one or more integrated pumps and motors.

Integrated pumping system for use in pumping a variety of fluids

Growing community of inventors

Pearland, TX, United States of America

Lawrence C Lee