In situ recovery of viscous materials
Номер патента: CA1173356A
Опубликовано: 28-08-1984
Автор(ы): Donald E. Towson
Принадлежит: Canada Cities Service Ltd, Gulf Canada Ltd, Husky Oil Operations Ltd, Imperial Oil Ltd, Petro Canada Exploration Inc
Опубликовано: 28-08-1984
Автор(ы): Donald E. Towson
Принадлежит: Canada Cities Service Ltd, Gulf Canada Ltd, Husky Oil Operations Ltd, Imperial Oil Ltd, Petro Canada Exploration Inc
Реферат: Case 5562 CLR/nlh/ejl ABSTRACT OF THE INVENTION Viscous materials, such as bitumen, can be recovered from subsurface earth formations such as tar sands, by forming a shaft, or first borehole, to the base of the desired subsurface formation, extending the shaft into the underburden, forming a tunnel in the underburden outwardly from the shaft, and drilling second boreholes outwardly and upwardly from the tunnel into the subsurface formation. Steam is injected into these second boreholes unit the viscosity of the material is reduced, and the liberated material is collected. Variations of this basic procedure are discussed.
In situ recovery of viscous materials
Номер патента: CA1173353A. Автор: Donald E. Towson,John R.L. Bherer. Владелец: Petro Canada Exploration Inc. Дата публикации: 1984-08-28.