David P Ayers

US Patent:

7428925, Sep 30, 2008

Filed:

Nov 21, 2005

Appl. No.:

11/284077

Inventors:

Jonathan Brown - Sugar Land TX, US
Danny A. Hlavinka - Houston TX, US
David Ayers - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 47/00

US Classification:

166264, 166100, 7315224

Abstract:

A formation evaluation tool positionable in a wellbore penetrating a subterranean formation is provided. The formation evaluation tool includes a cooling system adapted to pass a cooling fluid near electronics in the formation evaluation tool whereby heat is dissipated therefrom, the electronics has at least one gauge, a fluid communication device having an inlet adapted to receive the formation fluid and a flowline operatively connected to the fluid communication device and the gauge for placing the formation fluid in fluid communication therewith whereby properties of the formation fluid are determined. The formation evaluation tool may also be provided with a plurality of sample chambers operatively connected to the flowline for collecting at least a portion of the formation fluid and a pressure compensator in fluid communication with the wellbore and operatively connected to the plurality of sample chambers for applying pressure to the sample chambers whereby pressure is balanced therebetween.

US Patent:

7568521, Aug 4, 2009

Filed:

Oct 25, 2007

Appl. No.:

11/924343

Inventors:

Jonathan Brown - Sugar Land TX, US
Danny A. Hlavinka - Houston TX, US
David Ayers - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 49/10

US Classification:

166 66, 166 57, 166 665, 166100, 7315224, 62 6

Abstract:

A formation evaluation tool positionable in a wellbore penetrating a subterranean formation is provided. The formation evaluation tool includes a cooling system adapted to pass a cooling fluid through electronics in the formation evaluation tool whereby heat is dissipated therefrom, the electronics has at least one gauge, a fluid communication device having an inlet adapted to receive the formation fluid and a flowline operatively connected to the fluid communication device and the gauge for placing the formation fluid in fluid communication therewith whereby properties of the formation fluid are determined.

US Patent:

7913806, Mar 29, 2011

Filed:

Feb 25, 2009

Appl. No.:

12/392424

Inventors:

Miguel F. Pabon - Kay TX, US
Fernando Garcia Osuna - Sugar Land TX, US
David B. Ayers - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Cambridge MA

International Classification:

G01V 1/40
G01V 1/00
E21B 47/00

US Classification:

181104, 181102, 181108, 181110, 181111, 181112, 1662542, 1662552, 367 27, 367 35, 175 50

Abstract:

A measurement package for disposal on an apparatus such as a downhole tool or a tool like device. The measurement package including an enclosure, a first acoustic transducer housed within the enclosure, a second acoustic transducer housed within the enclosure and electronics housed within the enclosure that is in communication with the first and second transducers. Further, an acoustic transmitter and receivers can be disposed at an angle with respect to a longitudinal axis of the enclosure. The enclosure can contain attenuative material surrounding the transmitter and receivers, and electronics for controlling the transmitter and receivers and communicating with the downhole tool.

US Patent:

8256565, Sep 4, 2012

Filed:

Apr 18, 2006

Appl. No.:

11/379134

Inventors:

Miguel F. Pabon - Sugar Land TX, US
Fernando Garcia Osuna - Sugar Land TX, US
David B. Ayers - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 1/00
G01V 1/40
E21B 47/00

US Classification:

181104, 181102, 181108, 181110, 181111, 181112, 1662542, 1662552, 367 27, 367 35, 175 50

Abstract:

An enclosure for housing a transducer and electronics for disposal on a downhole tool. A transducer is disposed at an angle with respect to a longitudinal axis of the enclosure, wherein the enclosure contains a fluid surrounding the transducer. Enclosures also include transducers linked to motor means for selective rotation of the transducers within the enclosure. Enclosures with transducer arrays for phased or targeted signal transmission/detection.

US Patent:

8408355, Apr 2, 2013

Filed:

Aug 1, 2012

Appl. No.:

13/563741

Inventors:

Miguel F. Pabon - Sugar Land TX, US
Fernando Garcia Osuna - Sugar Land TX, US
David B. Ayers - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 1/00
G01V 1/40
E21B 47/00
H05K 5/00

US Classification:

181104, 181102, 181108, 181110, 181111, 181112, 1662542, 1662552, 175 50, 361752, 367 27, 367 35

Abstract:

A downhole tool for subsurface disposal is provided. The tool comprises an elongated tool body, an enclosure attached to an exterior surface of the tool body. The enclosure comprises at least one transducer disposed at an angle with respect to a longitudinal axis of the enclosure, and an electronics board coupled to and disposed adjacent to the at least one transducer. The enclosure also defines an internal cavity, and the internal cavity contains a fluid for insulating the at least one transducer from a downhole environment. The fluid is in direct contact with the at least one transducer and the electronics board.

US Patent:

8639186, Jan 28, 2014

Filed:

Oct 28, 2010

Appl. No.:

12/914196

Inventors:

David Blaine Ayers - Sugar Land TX, US

Assignee:

Sondex Wireline Limited

International Classification:

H04B 7/00

US Classification:

455 412, 455572, 455573, 455 83, 4553431, 285333, 295272, 138109, 3408546, 3408548, 367 82, 367165

Abstract:

Drill pipe segments, communication systems, and methods of manufacturing pipe segments usable for communicating data wirelessly between sensors and tools placed in an oil and/or gas well are provided. Communication specks are applied on at least one of an outer surface or an inner surface of the pipe segments or coil tubing.

US Patent:

20120160572, Jun 28, 2012

Filed:

Dec 22, 2010

Appl. No.:

12/975643

Inventors:

David Blaine AYERS - Sugar Land TX, US
Ashwin GUPTE - Sugar Land TX, US

Assignee:

SONDEX LIMITED - Yately

International Classification:

E21B 10/00

US Classification:

175371

Abstract:

A seal ring assembly for a well drilling tool that takes the place of conventional O-rings that are prone to costly downhole failures. In a first embodiment the seal ring assembly is configured with a convex adapter seal ring at one end, a concave adapter seal ring at the other end, and a number of V-shaped component seal rings packed in between the convex and concave adapter seal rings and positioned in the space between a drill collar mandrel and a pressure cylinder of the well drilling tool. In a second embodiment the seal ring assembly is configured with a number of X-shaped component seal rings, each of which is fitted with two O-rings. The seal ring assemblies are able to flex when operating in a bent drill hole so as to maintain seal integrity and prevent fluids from passing through to the electronics region of the well drilling tool.

US Patent:

20130126245, May 23, 2013

Filed:

Nov 21, 2011

Appl. No.:

13/301289

Inventors:

David Blaine Ayers - Sugar Land TX, US

Assignee:

SONDEX WIRELINE LIMITED - Farnborough

International Classification:

E21B 12/00
F25B 9/14

US Classification:

175315, 62 6

Abstract:

Apparatus and method for cooling internal components of a down-hole well drilling apparatus. Components of the well drilling apparatus are encased in an inner canister that is further encased in an outer canister creating a void between the inner canister and the outer canister. Further, a plurality of moveable barriers is disposed between the inner canister and the outer canister and contains a heat transfer fluid. A plurality of agitators add mechanical energy to the plurality of moveable barriers compressing and expanding, while repositioning, the heat transfer fluid and creating a heat pump based on a reverse Stirling cycle to remove heat from the cooler inner canister and transfer the heat to the hotter environment outside the outer canister.

Author:

David J. Ayers

ISBN #:

0534609848

Author:

David Ayers

ISBN #:

0312071663

Author:

David Ayers

ISBN #:

0748609857

Author:

David Ayers

ISBN #:

0748620257