Oil well producing method and system

Details Oil well producing method and system Oil well producing method and system

1975-10-23

1977-04-12

Purser, Ernest R.

Wells

Processes

Separating material entering well

166 52, 166314, E21B 4325

Patent

active

040169308

ABSTRACT:
A method and system is provided wherein water is injected into a producing formation, particularly one which is partially depleted, for flow laterally into an offset well and thence downwardly into a separation zone or cavity which is located at a depth greater than the producing formation. The oil and water separates in the separation zone or cavity and each is separately flowed to the earth's surface. The arrangement is such that substantially no back pressure is exerted from the well into the formation. Preferably, the water is recirculated back for reinjection into the formation. Also, a treating chemical, such as an emulsion breaker can be injected into the separation zone or cavity for phase separation of the oil and water.

REFERENCES:
patent: 1499589 (1924-07-01), Navin
patent: 2293196 (1942-08-01), Crump
patent: 2821255 (1958-01-01), Spearow
patent: 3066732 (1962-12-01), McEver
patent: 3842908 (1974-10-01), Thomas et al.

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