Scott C Strattan

US Patent:

6902006, Jun 7, 2005

Filed:

Oct 3, 2002

Appl. No.:

10/263946

Inventors:

Thomas S. Myerley - Broken Arrow OK, US
Scott C. Strattan - Tulsa OK, US
Van J. McVicker - Broken Arrow OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B043/12

US Classification:

166373, 1663328

Abstract:

A lock open device for a flapper is disclosed. The tool engages in the sub-surface safety valve (SSSV) body and rotates the flapper to the open position, without shifting the flow tube. The flapper base is preferably held by a shearable thread and has a groove for engagement by the tool. The tool jars down on the flapper base to shear the thread and force the held open flapper into a retaining groove. Optionally, a penetrating tool can be connected so that, in a single trip, the flapper can be locked open and the pressurized control system can be accessed. Shearing the thread allows the flow tube spring to bias the held open flapper into its retaining groove.

US Patent:

7048059, May 23, 2006

Filed:

Oct 15, 2002

Appl. No.:

10/270970

Inventors:

Jeffrey K. Adams - Broken Arrow OK, US
Scott C. Strattan - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 29/12

US Classification:

166348, 166344, 166227, 166187

Abstract:

The annulus pressure is controlled by displacing incompressible fluid with compressible fluid in the annulus. The displaced fluid is filtered to avoid clogging small lines. The presence of compressible fluid minimizes the thermal effect of warm fluid in the production tubing on annulus pressure. As a result, thinner wall casing can be used, for considerable savings in material and installation cost.

US Patent:

7204313, Apr 17, 2007

Filed:

Jan 7, 2005

Appl. No.:

11/031585

Inventors:

Ronald Williams - Broken Arrow OK, US
Van McVicker - Broken Arrow OK, US
Scott Strattan - Tulsa OK, US
Jason B. Ives - Broken Arrow OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 34/14

US Classification:

166324, 166325, 1663327, 1663328

Abstract:

A flapper valve assembly is described having an equalizing port assembly with a bleed valve member that is moveable between an open position and a closed position. The equalizing port assembly features a structural support member in the form of a retainer key that is secured to the flapper valve member both axially and radially. Additionally, a compressible spring is located between the structural support member and provides biasing force upon the valve member to urge it toward a closed position. Additionally, the flapper valve member presents a pair of raised, substantially flat actuator contact portions upon its downstream face to meet an actuating tube in a mating contact arrangement and resist material deformation that could tend to clog or block the equalizing fluid flow port.

US Patent:

7409996, Aug 12, 2008

Filed:

Oct 25, 2004

Appl. No.:

10/973015

Inventors:

Thomas S. Myerley - Broken Arrow OK, US
Scott C. Strattan - Tulsa OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 34/10

US Classification:

166323, 166373, 1663328

Abstract:

Disclosed herein is a communication and lock open device which includes a lock open portion including a latch configured to engage a shifting profile on a closure member of a safety valve. Further included is a communication portion configured to rotationally align a cutter with a non-annular hydraulic bore in the safety valve and axially cut into the hydraulic bore with the cutter. Also disclosed is a method for replacing the function of a safety valve while employing an original control line including running a communication and lock open tool in a wellbore, locating the tool in a tubing retrievable safety valve and shearing a thread in the valve to render moveable a closure member of the tubing retrievable safety valve. The method includes shifting the closure member to lock the member in an open position, orienting a cutter and establishing fluid communication with a bore of the valve.

US Patent:

7987913, Aug 2, 2011

Filed:

Sep 26, 2008

Appl. No.:

12/238649

Inventors:

Larry J. Parmeter - Broken Arrow OK, US
Scott C. Strattan - Broken Arrow OK, US
David W. Chilcoat - Jenks OK, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 43/00
F16C 17/04
F04B 17/00
F04B 35/04

US Classification:

166370, 166107, 384420, 417365, 41742312

Abstract:

A rotary pump having thrust bearings includes a system for equalizing the loading on the thrust bearings. The thrust bearings are each supported on pistons that are in fluid communication with a hydraulic circuit. The hydraulic circuit has substantially the same pressure throughout, thereby floating each piston at the same pressure to provide an equal support force to each thrust bearing via each piston.

US Patent:

8016035, Sep 13, 2011

Filed:

Oct 25, 2004

Appl. No.:

10/972923

Inventors:

Scott C. Strattan - Broken Arrow OK, US
Jeffrey K. Adams - Broken Arrow OK, US
Thomas S. Myerley - Broken Arrow OK, US
Jason Ives - Broken Arrow OK, US
Jeffrey C. Williams - Cypress TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 47/10
E21B 34/06
E21B 41/02

US Classification:

16625008, 166312, 166324

Abstract:

Disclosed herein is a safety valve with a chemical injection configuration. The device includes a hydraulic fluid pressure operated piston at the housing. The device further includes a flow tube in operable communication with the piston and a chemical injection configuration disposed within the housing. Further disclosed herein is a method of maintaining the operation of a safety valve by injecting chemical fluid through a configuration within the safety valve. Still further disclosed herein is check valve. The check valve includes a seal, a dart having a closed head and sealable against the seal, one or more flutes on the dart, and a spring applying a biasing force to the dart to a sealing position, that force being overcomeable by a fluid pressure acting in a direction opposing the spring force.

US Patent:

20050284547, Dec 29, 2005

Filed:

Jun 21, 2005

Appl. No.:

11/158035

Inventors:

Scott Strattan - Tulsa OK, US
Thomas Myerly - Broken Arrow OK, US
Jeffrey Adams - Broken Arrow OK, US
William Bailey - Humble TX, US
Brian Wilfahrt - Houston TX, US

International Classification:

C22F001/10

US Classification:

148556000

Abstract:

Components of a subsurface safety valve are cast instead of machined for dramatic cost savings. In particular, the flapper is cast from a 718 nickel alloy and treated with the HIP process to increase strength and corrosion resistance while reducing porosity. Other downhole valve components are contemplated to be produced by the same technique and the materials can also be varied. Depending on the specific alloys, the resulting HIP components are either superior in performance (e.g. strength, corrosion resistance) or considerably cheaper to manufacture than their wrought counterparts.

US Patent:

20070277878, Dec 6, 2007

Filed:

Jun 7, 2007

Appl. No.:

11/759262

Inventors:

Scott Strattan - Tulsa OK, US
Jeffrey Adams - Broken Arrow OK, US
Thomas Myerley - Broken Arrow OK, US
Jason Ives - Broken Arrow OK, US
Jeffrey Williams - Owasso OK, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

F16K 17/02

US Classification:

137070000

Abstract:

Disclosed herein is a safety valve with a chemical injection configuration. The device includes a hydraulic fluid pressure operated piston at the housing. The device further includes a flow tube in operable communication with the piston and a chemical injection configuration disposed within the housing. Further disclosed herein is a method of maintaining the operation of a safety valve by injecting chemical fluid through a configuration within the safety valve. Still further disclosed herein is check valve. The check valve includes a seal, a dart having a closed head and sealable against the seal, one or more flutes on the dart, and a spring applying a biasing force to the dart to a sealing position, that force being overcomeable by a fluid pressure acting in a direction opposing the spring force.