1
Richard E Leturno: Drilling with casing and retrievable drill bit. Atlantic Richfield Company, Michael E Martin, March 30, 1993: US05197553 (245 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 ...


2
Richard E Leturno: Drilling with casing and retrievable drill bit. Atlantic Richfield Company, Michael E Martin, December 21, 1993: US05271472 (235 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 ...


3
Frank J Schuh: Electrode well and method of completion. Atlantic Richfield Company, Michael E Martin, February 3, 1987: US04640353 (228 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 ...


4
Jimmie J Renfro: Electrically stimulated well production system with flexible tubing conductor. Atlantic Richfield Company, Michael E Martin, May 5, 1987: US04662437 (218 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 ...


5
Michael B Winfree: Drilling with casing and retrievable bit-motor assembly. Atlantic Richfield Company, Michael E Martin, December 5, 1995: US05472057 (190 worldwide citation)

A wellbore is formed in the earth with an elongated, non-rotating tubular drillstem which may consist of a well casing or liner and including an expendable sub and reamer bit part connected to the lower distal end of the drillstem. A retrievable drilling fluid operated motor and drive member assembl ...


6
Gary L White: Acoustic measurements in rock formations for determining fracture orientation. Atlantic Richfield Company, Michael E Martin, May 17, 1988: US04744245 (180 worldwide citation)

A method and system for determining the probable direction of extension of a hydraulically induced fracture in a hydrocarbon bearing formation wherein prior to inducing the fracture, the formation region to be fractured is heated and thermally induced acoustic emissions from the formation are sensed ...


7
William N Wilson, Leon H Miles, Brett H Boyd, Robert B Carpenter: Cementing oil and gas wells using converted drilling fluid. Atlantic Richfield Company, Michael E Martin, November 28, 1989: US04883125 (169 worldwide citation)

Wellbores are cemented with a cement composition formed from drilling fluid occupying the wellbore by circulating a quantity of drilling fluid mixed with a cement material and a dispersant such as a sulfonated styrene copolymer with or without an organic acid into the wellbore to displace the drilli ...


8
Frank H Hsu, James A Dech: System and method for providing multiple wells from a single wellbore. Atlantic Richfield Company, Michael E Martin, February 28, 1989: US04807704 (140 worldwide citation)

Multiple wellbores may be extended from a common, generally vertical wellbore and completed for conduction of fluids between said common wellbore and each of said wells by drilling the common wellbore, inserting a seal bore into the common wellbore below the junction of a deviated well with said com ...


9
Robert B Carpenter, Bonsall S Wilton: Method for controlling fluid loss from wells into high conductivity earth formations. Atlantic Richfield Company, Michael E Martin, June 25, 1996: US05529123 (131 worldwide citation)

A method of reducing fluid loss into a highly conductive formation interval during drilling and completion of a well through such an interval wherein a foamed cement slurry, including an acid or oil soluble component, is injected into the well and forced into the conductive portions of the formation ...


10
Curtis G Blount, Robert A Benham, Jerry L Brock, John A Emerson, Keith R Ferguson, Donald F Scheve, Joseph H Schmidt, Karl W Schuler, Philip L Stanton: Apparatus and method for sealing perforated well casing. Atlantic Richfield Company, Michael E Martin, March 25, 1997: US05613557 (128 worldwide citation)

Perforations and other openings in well casings, liners and other conduits may be substantially blocked or sealed to prevent fluid flow between the casing or liner interior and an earth formation by placing a radially expansible sleeve adjacent the perforations or openings and urging the sleeve into ...



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