1
John Howard Striegler, Eddie Paul Howell: Production of bitumen from tar sands. Atlantic Richfield Company, Ronnie D Wilson, October 19, 1976: US03986557 (220 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 ...


2
John Howard Striegler, Eddie Paul Howell: Production of bitumen by steam injection. Atlantic Richfield Company, Ronnie D Wilson, June 1, 1976: US03960213 (20 worldwide citation)

A method of producing bitumen from a subterranean tar sand formation by the following multi-step method. First, an injection well is drilled to the formation and extended into the formation. Subsequent thereto, a perforated liner is inserted into the injection well extending the entire length thereo ...


3
John Howard Striegler, Eddie Paul Howell: Recovery of bitumen by steam injection. Atlantic Richfield Company, Ronnie D Wilson, June 1, 1976: US03960214 (16 worldwide citation)

A method of recovering bitumen from a subterranean tar sand formation by the following multi-step method. First, an injection well is drilled to the formation and cased. Perforations are provided in the portion of the injection well contacting the formation. Next, a plurality of production wells are ...


4
John Howard Striegler, Eddie Paul Howell: Recovery of bitumen from tar sands. Atlantic Richfield Company, Ronnie D Wilson, February 15, 1977: US04007788 (6 worldwide citation)

A method of recovering bitumen from a subterranean tar sand formation characterized by a plurality of steps. First, a continuous wellbore having a second section thereof contained within the formation and first and third sections thereof extending the second section to the earth's surface is formed. ...