Robert A Schroeder

US Patent:

20100253933, Oct 7, 2010

Filed:

Feb 19, 2010

Appl. No.:

12/708619

Inventors:

Paul GUIEZE - Fontenailles, FR
Bradley MARTIN - ST FARGEAU PONTHIERRY, FR
Robert SCHROEDER - Cambridge MA, US

International Classification:

G01N 21/31

US Classification:

356 51, 356440, 356433

Abstract:

A method and a device are presented for measuring the mercury content of hydrocarbon and natural gases in a continuous mode and in-situ in a gas production line in a real time mode, comprising diverting a gas sample from the gas production line in an optical flexible measuring cell for optical detection of the mercury present in the gas production line.

US Patent:

20100269579, Oct 28, 2010

Filed:

Apr 22, 2009

Appl. No.:

12/428454

Inventors:

JIMMY LAWRENCE - CAMBRIDGE MA, US
DAN E. ANGELESCU - Noisy le Grand Cedex, FR
CHRISTOPHER HARRISON - AUBURNDALE MA, US
TSUTOMU YAMATE - YOKOHAMA-SHI, JP
MATTHEW T. SULLIVAN - WESTWOOD MA, US
ROBERT J. SCHROEDER - NEWTOWN CT, US
RONALD E.G. VAN HAL - WATERTOWN MA, US
BHAVANI RAGHURAMAN - WILTON CT, US

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

E21B 49/08

US Classification:

7315223

Abstract:

A gas separation and detection tool for performing in situ analysis of borehole fluid is described. The tool operates by introducing a reagent to a test sample and causing the resulting mixture to flow through a microfluidic channel where optical testing is performed. The optical testing detects a change in a characteristic of the reagent in response to expose to one or more particular substances in the test sample. The test sample may be borehole fluid, a mixture of borehole fluid and scrubbing fluid subsequently mixed with reagent, a mixture of reagent and gas separated from borehole fluid, or a mixture of scrubbing fluid and gas separated from borehole fluid which is subsequently mixed with reagent. A membrane may be employed to separate one or more target gasses from the borehole fluid.

US Patent:

20130100453, Apr 25, 2013

Filed:

Oct 20, 2011

Appl. No.:

13/277933

Inventors:

Christopher Harrison - Auburndale MA, US
Robert J. Schroeder - Cambridge MA, US
Matthew T. Sullivan - Westwood MA, US
Bradley Martin - St Fargeau Ponthierry, FR
Albert Ballard Andrews - Wilton CT, US
Oliver Clinton Mullins - Ridgefield CT, US

International Classification:

G01N 21/55

US Classification:

356445

Abstract:

Accurate, real-time detection of dew point of a gaseous sample can be accomplished using the systems and techniques described herein. A gaseous sampling chamber defining an interior volume includes a patterned structure having a roughened surface exposed to the gaseous sampling chamber. The patterned structure includes an open volume accessible by the roughened surface, for example, representing at least about 10% of the interior volume of the gaseous sampling chamber. An illumination source is configured to illuminate at least a portion of the patterned structure. A light detector is configured to receive at least a portion of illumination returned from the patterned structure. A condensate detector is configured to determine a presence of a condensate on the roughened surface in response to an optical property of the patterned surface as modified by the presence of dew.

US Patent:

20130219997, Aug 29, 2013

Filed:

Feb 24, 2012

Appl. No.:

13/403989

Inventors:

Matthew T. Sullivan - Westwood MA, US
Christopher Harrison - Auburndale MA, US
Robert J. Schroeder - Cambridge MA, US
Ahmad Latifzai - Houston TX, US
Elizabeth Smythe - Cambridge MA, US
Shunsuke Fukagawa - Cambridge MA, US
Douglas W. Grant - Cedar Creek TX, US

International Classification:

G01N 11/00

US Classification:

73 5301

Abstract:

Systems and methods of determining fluid properties are disclosed. An example apparatus to determine a saturation pressure of a fluid includes a housing having a detection chamber and a heater assembly partially positioned within the detection chamber to heat a fluid. The example apparatus also includes a sensor assembly to detect a property of the fluid and a processor to identify a saturation pressure of the fluid using the property of the fluid.

US Patent:

20160040533, Feb 11, 2016

Filed:

Feb 10, 2014

Appl. No.:

14/653272

Inventors:

- Sugar Land TX, US
Matthew T. Sullivan - Westwood MA, US
Elizabeth Smythe - Cambridge MA, US
Shunsuke Fukagawa - Arlington MA, US
Robert J Schroeder - Newtown CT, US

International Classification:

E21B 49/08

Abstract:

A method and an apparatus for characterizing a fluid including a phase transition cell to receive the fluid, a piston to control fluid pressure, a pressure gauge to measure the fluid pressure and to provide information to control the piston, and connectors to connect the cell, piston, and gauge. The exterior volume of the phase transition cell, piston, gauge, and connectors is less than about 10 liters. A method and an apparatus to characterize a fluid including observing a fluid in an phase transition cell, measuring a pressure of the fluid, and adjusting a pressure control device in response to the measuring.