METHOD OF RECOVERY OF VISCOUS AND BITUMEN-BEARING OILS IN THIN FORMATIONS Russian patent published in 1997 - IPC

Abstract RU 2082875 C1

FIELD: oil producing industry. SUBSTANCE: method includes drilling-in of formation by producing and injection wells with vertical and horizontal wellbores. In case of formation with gas cap, oil seal is formed and pressure in gap cap is controlled with the help of increase of wellbore outlet of producing well from under the producing formation. Casing string is perforated in vertical well bore in the region of formation roof. Tubing together with pump is lowered down to the lower point of casing. Injection wells are located parallel to producing wells with horizontal wellbore drilled in formation roof zone. EFFECT: higher efficiency. 2 dwg

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RU 2 082 875 C1

Authors

Bajazitov Z.A.

Nenarokov S.Ju.

Muslimov R.Kh.

Dates

1997-06-27—Published

1993-01-14—Filed