Robert L Hilts

US Patent:

6478093, Nov 12, 2002

Filed:

Sep 29, 2000

Appl. No.:

09/676136

Inventors:

Robert L. Hilts - Carrollton TX
Marion Dewey Kilgore - Dallas TX

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 3312

US Classification:

166387, 166120, 166181, 166123, 166 55

Abstract:

An apparatus and method for installing and removing packer assemblies from a subterranean well. A packer assembly has a stop that prevents the seal assembly from relaxing. The stop is cut axially by use of a chemically reactive cutter device lowered into the well and activated by use of conventional wire line equipment. Once cut, the seal assembly on the packer is allowed to relax and can be removed intact from the well.

US Patent:

45248338, Jun 25, 1985

Filed:

Sep 23, 1983

Appl. No.:

6/535214

Inventors:

Robert L. Hilts - Farmers Branch TX
Robert W. Crow - Irving TX

Assignee:

Otis Engineering Corporation - Dallas TX

International Classification:

E21B 2303

US Classification:

166381

Abstract:

Apparatus and methods for installing a well tool device in the offset receptacle of a side pocket mandrel in predetermined oriented relation therein.

US Patent:

61128112, Sep 5, 2000

Filed:

Jan 8, 1998

Appl. No.:

9/004394

Inventors:

Marion D. Kilgore - Dallas TX
Robert L. Hilts - Carrollton TX

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 2306
E21B 3312

US Classification:

166134

Abstract:

Apparatus and methods are provided for anchoring within tubular structures and releasing therefrom. A packer capable of withstanding very large combined loads and differential pressures is provided with multiple dual slips. The packer uniquely distributes forces resulting from the loads and differential pressures among its slips, thereby minimizing damage to the tubular structure. In addition, the packer includes a debris barrier and a release device which permit convenient retrieval of the packer.

US Patent:

58330038, Nov 10, 1998

Filed:

Jul 15, 1996

Appl. No.:

8/682050

Inventors:

James R. Longbottom - Whitesboro TX
Robert L. Hilts - Carrollton TX

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 2906

US Classification:

166298

Abstract:

Apparatus and associated methods of using provide subterranean well completion wherein a lateral wellbore liner has divided a parent wellbore. In a preferred embodiment, a sidewall cutting apparatus is positionable within the liner and has a cutting tool which is radially outwardly extendable to cut an opening through the liner, thereby regaining access to a portion of the parent wellbore. An illustrated embodiment utilizes a telemetry-controlled lateral displacement mechanism to extend and retract the cutting tool.

US Patent:

57302219, Mar 24, 1998

Filed:

Jul 15, 1996

Appl. No.:

8/680740

Inventors:

James R. Longbottom - Whitesboro TX
John C. Gano - Carrollton TX
Robert L. Hilts - Carrollton TX

Assignee:

Halliburton Energy Services, Inc - Dallas TX

International Classification:

E21B 2906

US Classification:

166298

Abstract:

Methods of completing a subterranean well provide access to a portion of a parent wellbore which has been closed off by a lateral wellbore liner. In a preferred embodiment, a method includes the steps of depositing cement in the lateral wellbore liner and then drilling through the cement and liner utilizing a bent motor housing conveyed on coiled tubing. The cement provides lateral support for a cutting tool while it is milling through the liner.

US Patent:

44613539, Jul 24, 1984

Filed:

Jul 22, 1982

Appl. No.:

6/401005

Inventors:

Michael B. Vinzant - Carrollton TX
Steven C. Speegle - Flower Mound TX
Michael W. Meaders - Lewisville TX
Robert L. Hilts - Dallas TX

Assignee:

Otis Engineering Corporation - Dallas TX

International Classification:

E21B 3410

US Classification:

166322

Abstract:

A retrievable well safety valve in a cased well system including a tubing string, a dual packer downhole around the tubing sealing with the casing and submersible pump in the tubing string below the packer. The safety valve controls flow of pumped fluids through the tubing to surface and directs gas flow into the casing annulus above the packer. When the safety valve is landed in cooperating tubing nipples above the packer, separated central annular flow passages are formed for pumped fluids and gas respectively. A ball valve in the central flow passage controls pumped fluid flow therethrough and an annular valve coupled to the ball valve controls gas flow from below the packer through the annular flow passage around and by the ball valve. When the ball valve is in the down and open position, the valve ball member engages a lower seat, which maintains the central and annular flow passages separate and prevents comingling flow of fluids and gas. The coupled valves are held open by pressured fluid from surface and are closed automatically on loss of pressure in their control fluid circuits.

US Patent:

63022176, Oct 16, 2001

Filed:

Feb 18, 1999

Appl. No.:

9/250931

Inventors:

Marion D. Kilgore - Dallas TX
Robert L. Hilts - Carrollton TX

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 2306
E21B 3312
E21B 33129

US Classification:

166382

Abstract:

Apparatus and methods are provided for anchoring within tubular structures and releasing therefrom. In a described embodiment, a packer includes multiple debris barriers, which are deployed when slips of the packer are radially outwardly extended. The debris barriers prevent debris from settling about the slips, thereby enhancing convenient retrieval of the packer. Use of the debris barriers may also permit control over how the slips are extended.

US Patent:

RE323438, Feb 3, 1987

Filed:

Mar 20, 1985

Appl. No.:

6/713914

Inventors:

Michael B. Vinzant - Carrollton TX
Steven C. Speegle - Flower Mound TX
Michael W. Meaders - Lewisville TX
Robert L. Hilts - Dallas TX

Assignee:

Otis Engineering Corporation - Carrollton TX

International Classification:

E21B 3410

US Classification:

166322

Abstract:

A retrievable well safety valve in a cased well system including a tubing string, a dual packer downhole around the tubing sealing with the casing and submersible pump in the tubing string below the packer. The safety valve controls flow of pumped fluids through the tubing to surface and directs gas flow into the casing annulus above the packer. When the safety valve is landed in cooperating tubing nipples above the packer, separated central annular flow passages are formed for pumped fluids and gas respectively. A ball valve in the central flow passage controls pumped fluid flow therethrough and an annular valve coupled to the ball valve controls gas flow from below the packer through the annular flow passage around and by the ball valve. When the ball valve is in the down and open position, the valve ball member engages a lower seat, which maintains the central and annular flow passages separate and prevents comingling flow of fluids and gas. The coupled valves are held open by pressured fluid from surface and are closed automatically on loss of pressure in their control fluid circuits.