Donald Richard Hoyt

US Patent:

45937613, Jun 10, 1986

Filed:

Jul 20, 1984

Appl. No.:

6/632994

Inventors:

Donald L. Hoyt - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4316

US Classification:

166268

Abstract:

The disclosed invention is a method of conducting a miscible flood with a flooding medium predominantly composed of carbon dioxide or nitrogen in a shorter period of time with acceptable hydrocarbon recovery. The invention is practiced by injecting a predominantly carbon dioxide or nitrogen medium into the underground hydrocarbon reservoir at such a rate as to produce a frontal advance velocity in the reservoir of about 2 to about 15 times the critical velocity of flow for that flooding medium through the instant reservoir. This high flooding velocity, substantially above critical velocity, is maintained until the flooding front has traveled about 60% to about 90% of the distance from the injection to the production systems. At this time, the frontal advance velocity is reduced to a value approximately equal to or less than the critical velocity for the remainder of the miscible flood.

US Patent:

41945620, Mar 25, 1980

Filed:

Dec 21, 1978

Appl. No.:

5/972130

Inventors:

Issam S. Bousaid - Houston TX
Donald L. Hoyt - Houston TX
Ralph J. Korstad - Austin TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4324

US Classification:

166245

Abstract:

An in-situ combustion method for oil recovery from a subterranean oil-bearing formation traversed by a plurality of wells comprising a series of well pattern units wherein air permeability is established sequentially in the individual well pattern units pior to the initiation of in-situ combustion, thereby resulting in an increase in overall sweep efficiency.

US Patent:

46535837, Mar 31, 1987

Filed:

Nov 1, 1985

Appl. No.:

6/793830

Inventors:

Alfred Brown - Houston TX
Donald L. Hoyt - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4324

US Classification:

166252

Abstract:

The disclosed invention is a method of producing horizontal wells in the most efficient manner at an optimum fluid production rate, which is the maximum rate at which fluids may be produced from a horizontal well while maintaining the downward velocity of formation fluids towards the horizontal well at a velocity which will avoid fingering of the fluids through the formation.

US Patent:

48197246, Apr 11, 1989

Filed:

Sep 3, 1987

Appl. No.:

7/092750

Inventors:

Sami Bou-Mikael - Kenner LA
Robert B. Alston - Missouri City TX
Donald L. Hoyt - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4300

US Classification:

166263

Abstract:

The invention comprises injecting about 5% to about 25% pore volumes of a recovery fluid simultaneously into an underground formation through at least two wells. One well which is destined to be the production well is shut-in for a soak period of about one to about 60 days while injection of the recovery fluid is continued through the second well. The shut-in well is then converted to a production well and hydrocarbons and other fluids are produced from the production well while recovery fluid is injected through the second well. The shut-in well is then converted to a production well and hydrocarbons and other fluids are produced from the production well while recovery fluid is injected through the second well.

US Patent:

48197254, Apr 11, 1989

Filed:

Dec 28, 1987

Appl. No.:

7/137991

Inventors:

Donald S. Mims - Houston TX
Donald L. Hoyt - Houston TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

E21B 4324

US Classification:

166271

Abstract:

The invention is a method of recovering oil bypassed by a steam override zone. First, the production well is drilled below the oil producing zone into an underlying interval. The well perforations in the oil producing zone are closed off. The underlying interval is fractured to establish fluid communication between the underlying interval and the oil producing zone. The production well is completed for production through the fractured portion of the underlying interval. Finally, the steamflood is controlled to increase the pressure in the oil producing zone and drive the oil and steam downward to the new perforations in the underlying for production.

Address:

9203 Rowan Ln, Houston, TX 77036

Phone:

7137747243

VIN:

JHLRE38317C077982

Make:

HONDA

Model:

CR-V

Year:

2007