Anthony S Coghill

US Patent:

7762335, Jul 27, 2010

Filed:

Aug 23, 2007

Appl. No.:

11/843931

Inventors:

David Z. Anderson - Glenpool OK, US
Darren E. Bane - Broken Arrow OK, US
Alan N. Wagner - Broken Arrow OK, US
John E. Gunnells - Broken Arrow OK, US
Anthony S. Coghill - Tulsa OK, US
Allen P. Carney - Tulsa OK, US
Barry Lee Brown - Tulsa OK, US
Troy L. Smith - Tulsa OK, US
Jeremy R. Johnson - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 34/10

US Classification:

166321, 1663321, 1663341, 166375

Abstract:

A system is provided for switching between redundant control systems for a subsurface safety valve (SSV) while being able to isolate the closure spring from hydrostatic pressure in the control line of the system that is not being used. There are two control lines that connect to discrete operating pistons that are both coupled to the flow tube. Each operating piston is connected to a control rod with the control rods terminating near opposed ends of a pivoting member. Pushing down on one rod pushes up on the other rod so that the other rod is held supported and the hydrostatic pressure in its associated control line doesn't affect the force needed by the closure spring to close the SSV. Releasing control line pressure puts the system in neutral to allow either of the systems to be reselected.

US Patent:

7779907, Aug 24, 2010

Filed:

Mar 25, 2008

Appl. No.:

12/054592

Inventors:

Alan N. Wagner - Tulsa OK, US
Anthony S. Coghill - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 17/07

US Classification:

166169, 1662427, 188371

Abstract:

A downhole shock absorber preferably is filled with well fluid in a chamber that is reduced in volume due to impact. A rupture disc can hold the initial non-compressible liquid charge until impact. Upon impact, the rupture disc breaks to allow the fluid to be forced through an orifice to absorb some of the shock that occurs when a string hits a fixed object after dropping in the wellbore. The nose of the shock absorber is a soft material that has voids so that the combination of the softness of the material and the voids allow the nose to reshape until it encounters a surrounding tubular wall and then to collapse inwardly into the voids, making it simple to remove. The nose is releasably mounted to the shock absorber so the two can separate if the nose gets stuck after impact.

US Patent:

8443894, May 21, 2013

Filed:

Nov 18, 2009

Appl. No.:

12/621090

Inventors:

Anthony S. Coghill - Tulsa OK, US
Thomas S. Myerley - Broken Arrow OK, US
Ronald J. Garr - Inola OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 34/14

US Classification:

1663324, 1663323

Abstract:

The tool can run in and latch another tool such as a ball valve into a packer, for example. It has the capability of operating the valve while still engaged to the valve housing. Once the valve is operated and released a pressure test can be conducted while the tool is still engaged to the valve housing. After that a predetermined applied force allows release from the valve housing without the valve shifting mechanism still engaged. In a different configuration the tool can be a simple pulling tool to remove the valve housing without shifting it. The tool has a rotational lock to allow release from a packer by turning to the right. In another configuration it can be a latch tool for a production string that shifts the valve as it releases when the production string is pulled.

US Patent:

8471551, Jun 25, 2013

Filed:

Aug 26, 2010

Appl. No.:

12/869373

Inventors:

Gary B. Lake - Houston TX, US
Brock Alan Peoples - Sapulpa OK, US
John E. Burris - Tulsa OK, US
David Zach Anderson - Tulsa OK, US
James T. Sloan - Tulsa OK, US
Tyler C. Roberts - Skiatook OK, US
Grant R. Thompson - Tulsa OK, US
Anthony S. Coghill - Tulsa OK, US
Jeremy R. Johnson - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01B 7/14

US Classification:

32420724

Abstract:

A position monitoring system includes a tubular with a cavity formed therein, a magnet movable relative to the tubular, and a sensor sensible of a magnetic field of the magnet. A housing positioned within the cavity sealably isolates the sensor from environmental properties while permitting the sensor to sense the magnetic field of the magnet.

US Patent:

20090008102, Jan 8, 2009

Filed:

Jul 3, 2007

Appl. No.:

11/773053

Inventors:

David Z. Anderson - Glenpool OK, US
Alan N. Wagner - Broken Arrow OK, US
Clifford H. Beall - Broken Arrow OK, US
Anthony S. Coghill - Tulsa OK, US

International Classification:

E21B 34/06

US Classification:

166373

Abstract:

A valve for a line going to a subsurface safety valve can be blocked off with a valve that is initially held in a closed position. An upper spring pushes collets against a shoulder to keep a seal on a support assembly for the collets within an initial bore in a sealing relation. Application of pressure to the line urges the support assembly to move with respect to the collets and causes the collets to become unsupported. This initial movement of the support assembly is against a second spring that is weaker than the upper spring. The upper spring forces the collapsed collets into a smaller bore while the support assembly is retained against reverse movement at the urging of the second spring by a ratchet assembly. The seal is shifted into a bigger bore to allow flow through the valve and into or beyond the subsurface safety valve.

US Patent:

20120304853, Dec 6, 2012

Filed:

Jun 2, 2011

Appl. No.:

13/151897

Inventors:

John E. Burris - Sapulpa OK, US
Grant R. Thompson - Tulsa OK, US
David Z. Anderson - Tulsa OK, US
James T. Sloan - Tulsa OK, US
Brock Alan Peoples - Sapulpa OK, US
Doug A. Lowry - Arrow OK, US
Anthony S. Coghill - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

F16J 1/00

US Classification:

92172

Abstract:

An actuation assembly including a sleeve member having a radially outwardly extending projection and a piston having an axis, the piston operatively coupled to the projection of the sleeve member and arranged to exert an actuation force on the projection of the sleeve member for actuating the sleeve member, the actuation force positioned about radially aligned with the axis or radially outwardly from the axis.

US Patent:

20120318525, Dec 20, 2012

Filed:

Jun 15, 2011

Appl. No.:

13/160736

Inventors:

Anthony S. Coghill - Tulsa OK, US
Dale W. Schubert - Collinsville OK, US
Lisa D. Crase - Broken Arrow OK, US
Thomas S. Myerley - Broken Arrow OK, US
Michael J. May - Broken Arrow OK, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 34/06
F16K 27/00
E21B 34/00

US Classification:

166373, 1663323, 251366

Abstract:

A valving system includes, a tubular having a seat, and a body with a bore therethrough having a surface sealably engagable with the seat, the body being rotatable relative to the tubular between at least a first position, a second position and a third position, the first position occluding flow between an inside of the tubular and the bore the second position providing fluidic communication between the inside of the tubular and the bore via at least one cavity formed in the surface and a third position providing direct fluidic communication between the inside of the tubular and the bore

US Patent:

20130175028, Jul 11, 2013

Filed:

Jan 9, 2012

Appl. No.:

13/346446

Inventors:

Anthony S. Coghill - Tulsa OK, US
Thomas S. Myerley - Broken Arrow OK, US
Douglas A.G. Lowry - Broken Arrow OK, US
James T. Sloan - Tulsa OK, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 17/07

US Classification:

1662427

Abstract:

A shock absorbing system has a nose assembly that is formed to inwardly collapse on impact and is guided by a sleeve that can slide with the nose as the nose collapses or can extend for a portion of the length of the nose while being held fixed. In the latter instance the nose can have a leading end that has a biasing member in a resilient material so that on impact some of the shock is taken up by compression of the biasing member with subsequent extension of the biasing member retracting the resilient covering so that it is less likely to bind in the surrounding tubular. The leading end of the sleeve or the resilient material encasing the biasing member also soften the blow to a closed ball when the tool is dropped so that the ball surface is less likely to mar.