John D Michaels

US Patent:

6478096, Nov 12, 2002

Filed:

Jul 21, 2000

Appl. No.:

09/621398

Inventors:

Stanley C. Jones - Littleton CO
John M. Michaels - Houston TX
Jaedong Lee - Houston TX
Matthias Meister - Celle, DE
Volker Krueger - Celle, DE

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 4910

US Classification:

175 50, 16625001, 7315218

Abstract:

A minimum volume apparatus and method is provided including a tool for obtaining at least one parameter of interest of a subterranean formation in-situ, the tool comprising a carrier member, a selectively extendable member mounted on the carrier for isolating a portion of annulus, a port exposable to formation fluid in the isolated annulus space, a piston integrally disposed within the extendable member for urging the fluid into the port, and a sensor operatively associated with the port for detecting at least one parameter of interest of the fluid.

US Patent:

6640908, Nov 4, 2003

Filed:

Aug 7, 2002

Appl. No.:

10/213865

Inventors:

Stanley C. Jones - Littleton CO
John M. Michaels - Houston TX
Jaedong Lee - Houston TX
Matthias Meister - Celle, DE
Volker Krueger - Celle, DE

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 4910

US Classification:

175 50, 16625001, 7315218

Abstract:

A minimum volume apparatus and method is provided including a tool for obtaining at least one parameter of interest of a subterranean formation in-situ, the tool comprising a carrier member, a selectively extendable member mounted on the carrier for isolating a portion of annulus, a port exposable to formation fluid in the isolated annulus space, a piston integrally disposed within the extendable member for urging the fluid into the port, and a sensor operatively associated with the port for detecting at least one parameter of interest of the fluid.