1
William C Pritchett: Method and apparatus for producing fluid by varying current flow through subterranean source formation. Atlantic Richfield Company, Ronnie D Wilson, April 6, 1976: US03948319 (259 worldwide citation)

Method and apparatus for heating a subterranean formation in which a plurality of wells are completed in a predetermined pattern, characterized by heating the subterranean formation by electrical conduction under conditions such that the electrical current flowing at different subterranean points in ...


2
Thomas K Perkins: Viscous oil production using electrical current heating and lateral drain holes. Atlantic Richfield Company, M David Folzenlogen, December 25, 1984: US04489782 (256 worldwide citation)

Improved electrical power utilization and increased oil production per producing well are achieved by specially completing a production well, applying electrical current through the production well to a subsurface formation, and producing oil from said formation. The production well extends essentia ...


3
Richard E Leturno: Drilling with casing and retrievable drill bit. Atlantic Richfield Company, Michael E Martin, March 30, 1993: US05197553 (244 worldwide citation)

Wellbores are formed in the earth with elongated, tubular drillstems which include retrievable bit and drive motor assemblies. The retrievable bit assembly includes a body having locking dogs engageable with cooperating recesses formed in a sub at the bottom of the drillstem. The bit assembly includ ...


4
Robert Wilson: Enhanced well production. Atlantic Richfield Company, Roderick W MacDonald, March 24, 1987: US04651825 (236 worldwide citation)

A method and apparatus for enhancing the production of a hydrocarbonaceous fluid from a subterranean geologic reservoir containing same using electrical heating by employing at least three electrodes between the injection wellbore and production wellbore and passing electricity only between the thre ...


5
Richard E Leturno: Drilling with casing and retrievable drill bit. Atlantic Richfield Company, Michael E Martin, December 21, 1993: US05271472 (234 worldwide citation)

Wellbores are formed in the earth with elongated, tubular drillstems which include retrievable bit assemblies. The retrievable bit assembly includes a body having locking dogs engageable with cooperating recesses formed in a sub at the bottom of the drillstem. The bit assembly includes radially exte ...


6
James D Dearth: Method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit. Atlantic Richfield Company, F Lindsey Scott, August 23, 1983: US04399866 (222 worldwide citation)

A method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit by injecting an aqueous plugging material into the permeable deposit through a plurality of wells to produce a plurality of injected areas of a size such that the injected ar ...


7
Frank J Schuh: Electrode well and method of completion. Atlantic Richfield Company, Michael E Martin, February 3, 1987: US04640353 (222 worldwide citation)

An electrode well extending into a subterranean formation containing viscous hydrocarbons comprising a plurality of electrode tubes which are formed by extension of an elongated tube from the surface above the formation using a coiled tube injection unit or lowering the tubes on drill pipe, divertin ...


8
John Howard Striegler, Eddie Paul Howell: Production of bitumen from tar sands. Atlantic Richfield Company, Ronnie D Wilson, October 19, 1976: US03986557 (218 worldwide citation)

A method of producing bitumen from a subterranean tar sand formation characterized by the following muti-step process. First, a continuous wellbore having a second section thereof contained within the formation and a first and a third section extending said second section to the earth's surface is f ...


9
Jimmie J Renfro: Electrically stimulated well production system with flexible tubing conductor. Atlantic Richfield Company, Michael E Martin, May 5, 1987: US04662437 (212 worldwide citation)

Electrical resistance heating of subterranean viscous fluid deposits is provided by a wellbore having a conductive casing section and a coupling disposed in proximity to the formation. An elongated, flexible fluid injection or withdrawal tube extends into the wellbore, is secured to the coupling, an ...


10
Thomas S Hutchinson: Method for excavating a large diameter shaft into the earth and at least partially through an oil-bearing formation. Atlantic Richfield Company, F Lindsey Scott, July 1, 1986: US04597444 (207 worldwide citation)

A method for positioning a large diameter shaft from the surface into the earth and at least partially through a subterranean oil-bearing formation, said method comprising



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