Larry R Welch

US Patent:

6550963, Apr 22, 2003

Filed:

Apr 26, 2001

Appl. No.:

09/842905

Inventors:

Jeffrey N. Daily - Houston TX
Robert F. Poteet - Sugarland TX
Michael W. Rahn - Houston TX
Larry D. Welch - Missouri City TX

Assignee:

Daily Instruments - Houston TX

International Classification:

G01K 704

US Classification:

374179, 374166, 136201, 136211, 136233, 1362361

Abstract:

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 permit sensing of temperature at different locations along the length of the multipoint thermocouple.

US Patent:

6599011, Jul 29, 2003

Filed:

Apr 26, 2001

Appl. No.:

09/842932

Inventors:

Jeffrey N. Daily - Houston TX
Robert F. Poteet - Sugarland TX
Michael W. Rahn - Didcot, GB
Larry D. Welch - Missouri City TX

Assignee:

Daily Thermetrics - Houston TX

International Classification:

G01K 704

US Classification:

374166, 374179, 374137, 374208, 374141, 136201, 136211, 136233

Abstract:

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 detect temperature at a plurality of unique locations within the vessel.

US Patent:

7845413, Dec 7, 2010

Filed:

May 29, 2007

Appl. No.:

11/754776

Inventors:

Rod Shampine - Houston TX, US
Paul Dwyer - Houston TX, US
Ronnie Stover - Houston TX, US
Mike Lloyd - Katy TX, US
Jean-Louis Pessin - Houston TX, US
Edward Leugemors - Sugar Land TX, US
Larry D. Welch - Missouri City TX, US
Joe Hubenschmidt - Sugar Land TX, US
Philippe Gambier - Houston TX, US
William Troy Huey - Elk City OK, US
Tom Allan - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04
E21B 43/267

US Classification:

166369, 1663081, 166 685, 166105, 4151991

Abstract:

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 carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form the oilfield fluid.

US Patent:

8056635, Nov 15, 2011

Filed:

Dec 2, 2010

Appl. No.:

12/958716

Inventors:

Rod Shampine - Houston TX, US
Paul Dwyer - Houston TX, US
Ronnie Stover - Houston TX, US
Mike Lloyd - Katy TX, US
Jean-Louis Pessin - Amiens, FR
Edward Leugemors - Sugar Land TX, US
Larry D. Welch - Missouri City TX, US
Joe Hubenschmidt - Sugar Land TX, US
Philippe Gambier - Houston TX, US
William Troy Huey - Elk City OK, US
Tom Allan - Moscow, RU

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04
E21B 43/267

US Classification:

166369, 1663081, 166 685, 166105

Abstract:

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 carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

US Patent:

8336631, Dec 25, 2012

Filed:

Sep 19, 2011

Appl. No.:

13/235699

Inventors:

Rod Shampine - Houston TX, US
Paul Dwyer - Houston TX, US
Ronnie Stover - Houston TX, US
Mike Lloyd - Katy TX, US
Jean-Louis Pessin - Amiens, FR
Edward Leugemors - Needville TX, US
Larry D. Welch - Missouri City TX, US
Joe Hubenschmidt - Sugar Land TX, US
Philippe Gambier - La Defense, FR
William Huey Troy - Ahmadi, KW
Thomas Allan - Paris, FR

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04
E21B 43/267

US Classification:

166369, 1663081, 166 685, 166105

Abstract:

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 carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

US Patent:

20130070808, Mar 21, 2013

Filed:

Sep 15, 2011

Appl. No.:

13/233807

Inventors:

Jeffrey N. Daily - Houston TX, US
Larry Welch - Richmond TX, US
Yean C. Chan - Johor Bahru, MY

International Classification:

G01K 1/14
G01K 7/02

US Classification:

374179, 374208, 374E07004, 374E01018

Abstract:

A temperature sensing assembly for measuring the temperature of a surface of a structure includes a thermocouple device having a sheath containing a pair of conductors of dissimilar materials connected at a junction point to provide indications of temperature. The assembly further includes a docking device with a recess formed in a top surface to receive a portion of the sheath that is proximate the junction point. The bottom surface of the docking device is attached to the surface of the structure. The recess extends through the bottom surface of the docking device so that when the thermocouple device is positioned in the recess, the junction point is adjacent the surface of the tube. A heat shield can be attached to the docking device to shield the sheath proximate the junction point from direct and radiant heat sources.

US Patent:

20130098619, Apr 25, 2013

Filed:

Dec 11, 2012

Appl. No.:

13/711219

Inventors:

Schlumberger Technology Corporation - Sugar Land TX, US
Paul Dwyer - Mount Pearl, CA
Ronnie Stover - Houston TX, US
Mike Lloyd - Katy TX, US
Jean-Louis Pessin - Amiens, FR
Edward Leugemors - Needville TX, US
Larry D. Welch - Missouri City TX, US
Joe Hubenschmidt - Sugar Land TX, US
Philippe Gambier - Houston TX, US
William Troy Huey - Ahmadi, KW
Thomas Allan - Paris, FR

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

E21B 43/16

US Classification:

1663051, 166 901

Abstract:

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 carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

US Patent:

20140069651, Mar 13, 2014

Filed:

Nov 14, 2013

Appl. No.:

14/079794

Inventors:

Paul Dwyer - St. John's, CA
Ronnie Stover - Houston TX, US
Mike Lloyd - Katy TX, US
Jean-Louis Pessin - Paris, FR
Edward Kent Leugemors - Needville TX, US
Larry D. Welch - Missouri City TX, US
Joe Hubenschmidt - Sugar Land TX, US
Philippe Gambier - Houston TX, US
William Troy Huey - Fulshear TX, US
Thomas Allan - Paris, FR

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/25

US Classification:

1663051, 166 685

Abstract:

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 carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.