Thermal recovery method for viscous oil

Patent 4598770 Issued on July 8, 1986. Estimated Expiration Date:

October 25, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Method and apparatus for recovering viscous petroleum from tar sand
Patent #: 4248302
Issued on: 02/03/1981
Inventor: Churchman

Thermal recovery of viscous hydrocarbons using arrays of radially spaced horizontal wells
Patent #: 4296969
Issued on: 10/27/1981
Inventor: Willman

Method for continuously producing viscous hydrocarbons by gravity drainage while injecting heated fluids
Patent #: 4344485
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Inventor: Butler

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Patent #: 4385662
Issued on: 05/31/1983
Inventor: Mullins , et al.

Method and apparatus for recovering high viscosity oils
Patent #: 4434849
Issued on: 03/06/1984
Inventor: Allen

Selected well completion for improving vertical conformance of steam drive process
Patent #: 4458758
Issued on: 07/10/1984
Inventor: Hunt, III , et al.

Viscous oil recovery method
Patent #: 4466485
Issued on: 08/21/1984
Inventor: Shu

In-situ recovery of viscous hydrocarbonaceous crude oil Patent #: 4501326
Issued on: 02/26/1985
Inventor: Edmunds

Inventors

Assignee

Mobil Oil Corporation

Application

No. 06/664740 filed on 10/25/1984

US Classes:

166/245, Specific pattern of plural wells166/272.7, Horizontal well166/50, WELLS WITH LATERAL CONDUITS166/52PLURAL WELLS

Examiners

Primary: Novosad, Stephen J.

Attorney, Agent or Firm

International Classes

E21B 43/30 (20060101)
E21B 43/00 (20060101)
E21B 43/24 (20060101)
E21B 43/16 (20060101)

Abstract

A thermal oil recovery process in which steam is injected into a heavy oil-bearing formation through a horizontally-drilled injection well and oil is produced through a horizontal production well parallel to the injection well.