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Rod Shampine, Paul Dwyer, Ronnie Stover, Mike Lloyd, Jean Louis Pessin, Edward Leugemors, Larry D Welch, Joe Hubenschmidt, Philippe Gambier, William Troy Huey, Tom Allan: Method of pumping an oilfield fluid and split stream oilfield pumping systems. Schlumberger Technology Corporation, Michael Dae, David Cate, Robin Nava, December 7, 2010: US07845413 (41 worldwide citation)

A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrie ...


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Jeffrey N Daily, Robert F Poteet, Michael W Rahn, Larry D Welch: Multipoint thermocouple. Daily Instruments, Fletcher Yoder & Van Someren, April 22, 2003: US06550963 (11 worldwide citation)

A multipoint thermocouple for sensing temperature. The thermocouple comprises a sheath having a plurality of conductor pairs disposed within the sheath. Each conductor pair has two conductors of dissimilar materials joined at a unique junction point along the sheath. The unique junction points permi ...


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Warren M Zingg, Larry D Welch: High pressure choke assembly. Dowell Schlumberger Incorporated, L Wayne White, May 5, 1987: US04662401 (10 worldwide citation)

A pressurized fluid is "let-down" to atmospheric pressure as it passes through a choke assembly having two pressure orifices (choke flow beans) which are in-line and directly opposite and which are designed to deliver jet streams of generally equal force to a common in-line focal point. The choke as ...


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Jeffrey N Daily, Robert F Poteet, Michael W Rahn, Larry D Welch: System for sensing temperature at multiple points within a vessel. Daily Thermetrics, Fletcher Yoder & Van Someren, July 29, 2003: US06599011 (7 worldwide citation)

A temperature sensing assembly utilizing a multipoint thermocouple. The assembly comprises a vessel, e.g. a chemical reaction pressure vessel, into which a thermocouple is inserted. The thermocouple utilizes an elongated sheath having a plurality of sensors therein. The sensors are arranged to detec ...


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Rod Shampine, Paul Dwyer, Ronnie Stover, Mike Lloyd, Jean Louis Pessin, Edward Leugemors, Larry D Welch, Joe Hubenschmidt, Philippe Gambier, William Troy Huey, Tom Allan: Split stream oilfield pumping systems. Schlumberger Technology Corporation, Michael Dae, David Cate, Robin Nava, November 15, 2011: US08056635 (6 worldwide citation)

A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrie ...


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Rod Shampine, Paul Dwyer, Ronnie Stover, Mike Lloyd, Jean Louis Pessin, Edward Leugemors, Larry D Welch, Joe Hubenschmidt, Philippe Gambier, William Huey Troy, Thomas Allan: Split stream oilfield pumping systems. Schlumberger Technology Corporation, Myron K Stout, Daryl Wright, Robin Nava, December 25, 2012: US08336631 (4 worldwide citation)

A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrie ...


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Rod Shampine, Paul Dwyer, Ronnie Stover, Mike Lloyd, Jean Louis Pessin, Edward Kent Leugemors, Larry D Welch, Joe Hubenschmidt, Philippe Gambier, William Troy Huey, Thomas Allan: Split stream oilfield pumping systems. Schlumberger Technology Corporation, Jeffrey R Anderson, April 28, 2015: US09016383 (1 worldwide citation)

A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrie ...


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Rod Shampine, Paul Dwyer, Ronnie Stover, Mike Lloyd, Jean Louis Pessin, Edward Leugemors, Larry D Welch, Joe Hubenschmidt, Philippe Gambier, William Troy Huey, Thomas Allan: Split stream oilfield pumping systems. Schlumberger Technology Corporation, Rachel E Greene, Tim Curington, October 7, 2014: US08851186 (1 worldwide citation)

A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrie ...