Combination production of shallow heavy crude

Details Combination production of shallow heavy crude Combination production of shallow heavy crude

1997-03-13

1999-09-28

Neuder, William

Wells

Processes

Distinct, separate injection and producing wells

1662727, E21B 4324

Patent

active

059572027

ABSTRACT:
Techniques are disclosed for the safe production of shallow heavy oil sands which substantially reduce the probability of surface steam breakthrough. A pattern of injection wells and producing wells are drilled through the overburden into a relatively shallow heavy oil producing zone. Firstly the injection wells and the producing wells are cold produced for a combination of heavy oil and sand by use of a progressive cavity pump or the like. Then steam push-pull is used on both the injectors and producers until heavy oil production becomes uneconomical. Finally, low pressure steam is continuously injected into the injection well and heavy oil continuously produced from the producing wells.

REFERENCES:
patent: 4718485 (1988-01-01), Brown et al.
patent: 4727937 (1988-03-01), Shum et al.
patent: 5246071 (1993-09-01), Chu
patent: 5305829 (1994-04-01), Kumar
patent: 5318124 (1994-06-01), Ong et al.
patent: 5320170 (1994-06-01), Huang et al.

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