1
Philippe Gambier, Toshimichi Wago, Jean Louis Pessin: Valve-seat interface architecture. Schlumberger Technology Corporation, Myron K Stout, Daryl Wright, Robin Nava, November 27, 2012: US08317498 (5 worldwide citation)

A pump assembly with valve-seat interface architecture configured to extend the life of pump components and the assembly. A valve of the pump assembly is equipped with a conformable valve insert that is configured with a circumferential component having the capacity to reduce the radial strain of it ...


2
Nathan St Michel, Toshimichi Wago, Joe Hubenschmidt, Jean Louis Pessin: System and method for determining onset of failure modes in a positive displacement pump. Schlumberger Technology Corporation, Myron Stout, Daryl Wright, Robin Nava, February 5, 2013: US08366402 (3 worldwide citation)

A reciprocating pump system is utilized. The system facilitates the prediction of failure modes due to degradation of pump components. A sensor system is used to monitor parameters indicative of abnormal events or wear occurring in specific components, such as pump valves. The indications of wear ca ...


3
Nikolay Baklanov, Sarmad Adnan, Toshimichi Wago: Technique for acoustic data analysis. Schlumberger Technology Corporation, Michael Flynn, David Cate, Robin Nava, January 5, 2010: US07643945 (3 worldwide citation)

A method of enhancing acoustic pump data for monitoring of pump condition in operation. The enhancement may be in the form of a substantial reduction in the amount of data to be processed by firmware to a much more manageable level. This may be achieved through pre-filtering of acquired acoustic dat ...


4
Edward Leugemors, Rajesh Luharuka, Toshimichi Wago, Philippe Gambier, Jean Louis Pessin, Aparna Raman: Methods of use for a positive displacement pump having an externally assisted valve. Schlumberger Technology Corporation, Myron Stout, Daryl R Wright, Tim Curington, August 13, 2013: US08506262 (2 worldwide citation)

A method for operating at least one pump in a pump assembly comprises providing a pump assembly comprising a fluid end and a power end, the fluid end in communication with a fluid source and at least one downstream destination and comprising a pump housing for a pressurizable chamber, at least one v ...


5
Toshimichi Wago, Jean Louis Pessin, Nathan St Michel: Positive displacement pump monitor. Schlumberger Technology Corporation, Rodney Warfford, Michael Flynn, David Cate, July 22, 2008: US07401500 (2 worldwide citation)

A positive displacement pump monitor. The monitor includes a sensor coupled to a housing of a pump for obtaining acoustic data therefrom. A proximity switch may be simultaneously used to keep real time timing information relative to the cycling of the pump. A data processor of the monitor may then b ...


6
Jean Louis Pessin, Joe Hubenschmidt, Erik Rhein Knudsen, Toshimichi Wago, Nathan St Michel: Sensor system for a positive displacement pump. Schlumberger Technology Corporation, Jeffrey R Anderson, Rachel E Greene, Tim Curington, March 17, 2015: US08979505 (1 worldwide citation)

A positive displacement pump is provided that includes a pump housing having a pump chamber; a plunger mounted in the pump housing for reciprocating motion in the pump chamber; a suction valve positioned to allow a fluid to enter the pump chamber upon movement of the plunger in a first direction; a ...


7
Toshimichi Wago, Philippe Gambier, Jean Louis Pessin, Rajesh Luharuka: Externally assisted valve for a positive displacement pump. Schlumberger Technology Corporation, Myron Stout, Daryl Wright, Robin Nava, February 5, 2013: US08366408

A positive displacement pump having a valve with an actuation guide for assisting its actuation. The valve may be configured for controlling fluid communication relative to a chamber of the pump with the valve actuation guide positioned external to the chamber and configured to assist in the control ...


8
Toshihiro Kinoshita, Naoki Sakiyama, Hitoshi Sugiyama, Yuichiro Wada, Toshimichi Wago, Akito Shigekane: Apparatus for monopole and multipole sonic logging of a downhole formation. SCHLUMBERGER TECHNOLOGY CORPORATION, Trevor G Grove, March 27, 2018: US09927541

A tool for monopole and multipole sonic logging includes an acoustic source section, an acoustic receiver section, and an isolator section disposed therebetween. The tool may include a mandrel having integrally formed alternating first portions having a first outer diameter and second portions havin ...


9
Tim Smith, Arturo E Altamirano, Toshimichi Wago: Real time radioactive training. Schlumberger Technology Corporation, Michael Flynn, Robin Nava, Charlotte Rutherford, October 23, 2012: US08294589

A method of and a system for tracking radioactive sources includes at least one RFID tag attached to a radioactive source shield, the shield receiving a radioactive source at a base location, and a TRX-Gamma box for detecting identification information from the RFID tag and sensing a first gamma rad ...


10
Jean Louis Pessin, Joe Hubenschmidt, Erik Rhein Knudsen, Toshimichi Wago, Nathan St Michel: Sensor system for a positive displacement pump. Schlumberger Technology Corporation, June 21, 2007: US20070139211-A1

A positive displacement pump is provided that includes a pump housing having a pump chamber; a plunger mounted in the pump housing for reciprocating motion in the pump chamber; a suction valve positioned to allow a fluid to enter the pump chamber upon movement of the plunger in a first direction; a ...