Petroleum production method

Details Petroleum production method Petroleum production method

Category

E - Fixed Constructions

Subcategory

21

Subsubcategory

B

CPC

166/38

IPC codes

E21B 43/22 (2006.01) E21B 17/00 (2006.01) E21B 43/12 (2006.01) E21B 43/16 (2006.01) E21B 43/24 (2006.01) E21B 43/30 (2006.01)

Type

Patent

Patent number

CA 1117004

Description

Abstract of the Disclosure A method for electrical resistance heating of select portions of a natural underground reservoir, in a geologic formation, that contains both crude oil and water. Through selective resistance heating, oil viscosity is reduced in the select portion of the reser- voir. Thus, portions which would not normally be con- tacted by injected fluids may be rendered susceptible to recovery by water flooding or other recovery process. Thermal expansion of heated oil also facilitates oil recovery. Resistance heating is accompanied by injec- tion of low resistivity liquid that functions both as a conductor, through which current passes into the select portions, and as a medium for displacing oil to a pro- duction well. The low resistivity liquid also conveys convective heat, which contributes to viscosity reduction. Alternatively, the method of the invention can be used for altering the drainage pattern of a well.

Application Number

329054

Affiliated with

Also associated with

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