Feng Qing Q Zhou

US Patent:

8581740, Nov 12, 2013

Filed:

Mar 6, 2007

Appl. No.:

11/682724

Inventors:

Kelly W. Hagen - Sugar Land TX, US
Kenneth R. Goodman - Richmond TX, US
Dale W. Clinton - Sugar Land TX, US
Feng Zhou - Missouri City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 3/00

US Classification:

3408531, 3408543, 166 64, 166373, 166381

Abstract:

A method for communicating a signal to an instrument in a wellbore includes axially accelerating the instrument in a preselected pattern of acceleration. The predetermined pattern corresponds to the signal to be communicated. The axial acceleration of the instrument is detected, and the signal is decoded from the detected axial acceleration. A signal detection system for an instrument in a wellbore includes an accelerometer oriented along a longitudinal axis of the instrument and means for comparing measurements made by the accelerometer to at least one predetermined pattern.

US Patent:

20050097911, May 12, 2005

Filed:

Jun 18, 2004

Appl. No.:

10/710103

Inventors:

Guillaume Revellat - Houston TX, US
Christian Stoller - Kingwood TX, US
Robert Adolph - Pennington NJ, US
Larry Bernard - Missouri City TX, US
Feng Zhou - Missouri City TX, US
Stephen Bonner - Sugar Land TX, US
Jean-Michel Hache - Houston TX, US
Ruvinda Gunawardana - Sugar Land TX, US

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

F25B009/00
E21B029/02
E21B043/00
F25D023/12

US Classification:

062259200, 062006000

Abstract:

A cooling system for a downhole tool includes an insulating chamber disposed in the tool, wherein the chamber is adapted to house an object to be cooled; a Stirling cooler is disposed in the tool, the cooler has a cold end configured to remove heat from the chamber and a hot end configured to dissipate heat; and an energy source to power the Stirling cooler. A downhole tool includes: a tool body, and a cooling system with an insulating chamber; wherein the chamber is adapted to house an object to be cooled; a Stirling cooler is disposed in the tool, the cooler has a cold end configured to remove heat from the chamber and a hot end configured to dissipate heat; and an energy source to power the Stirling cooler.

Address:

6303 Misty Crk, Missouri City, TX 77459

VIN:

5TDZK23CX7S009377

Make:

TOYO

Model:

SIEN

Year:

2007