Gregory Glenn Gilbert

US Patent:

7204309, Apr 17, 2007

Filed:

May 19, 2003

Appl. No.:

10/440835

Inventors:

Pedro R. Segura - Austin TX, US
Mark A. Sitka - Richmond TX, US
Gregory N. Gilbert - Sugar Land TX, US
Preston N. Weintraub - The Woodlands TX, US
Tony T. Vu - Pearland TX, US
Kristopher V. Sherrill - Humble TX, US
David M. Welshans - Damon TX, US
James E. Stone - Porter TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 49/10

US Classification:

166264, 166 50, 166100, 175 59, 7315217, 7315226

Abstract:

A formation testing tool is described herein, including a formation probe assembly having an extendable sampling probe surrounded by a cylindrical sleeve. The sleeve is configured to engage a metal skirt having an elastomeric seal pad coupled thereto. The skirt and seal are configured to be field replaceable. The elastomeric pad has a non-planar outer surface which engages a borehole wall in preparation for formation testing. The seal pad may be donut-shaped, having an aperture through the middle of the seal pad. The seal pad and its surface may include numerous different embodiments, including having a curved profile. The seal pad may also include numerous different embodiments of means for coupling the seal pad to the metal skirt. The formation testing tool also includes formation probe assembly anti-rotation means, a deviated non-circular flowbore, and at least one closed hydraulic fluid chamber for balancing fluid pressures.

US Patent:

7395879, Jul 8, 2008

Filed:

Apr 16, 2007

Appl. No.:

11/735901

Inventors:

Pedro Segura - Austin TX, US
Mark A. Sitka - Richmond TX, US
Gregory N. Gilbert - Sugar Land TX, US
Preston N. Weintraub - The Woodlands TX, US
Tony T. Vu - Pearland TX, US
Kristopher V. Sherrill - Humble TX, US
David M. Welshans - Damon TX, US
James E. Stone - Porter TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 49/10

US Classification:

175 50, 175 59, 166100, 7315222, 7315226

Abstract:

An apparatus including a drill collar having an outer surface, an assembly for interaction with an earth formation coupled to the drill collar, the assembly including a first member to extend beyond the drill collar outer surface and a second member to extend beyond the first member and toward the earth formation to receive formation fluids. An apparatus including an MWD tool having an outer surface, a formation testing assembly coupled to the MWD tool, the formation testing assembly recessed beneath the outer surface in a first position and including a piston to extend beyond the outer surface to a second position and an inner sampling member to extend beyond the piston to a third position.