| 摘要 |
FIELD: oil production, particularly methods or apparatuses for obtaining oil, gas, water and other materials from wells and for underground separation of fluid obtained from the well to lift oil-enriched well fluid to ground surface. ^ SUBSTANCE: well extending from ground surface to underground productive reservoir is filled with liquid oil products and water. The well is divided with separation chamber located above the productive reservoir. Immovable separator adapted to remove water from oil is installed in the separation chamber. The separator has inlet orifice for well fluid receiving from inlet well section located under the separation chamber and outlet orifice for oil-enriched component discharge. The outlet orifice may be communicated with well section located above the separation chamber. Outlet orifice for water-enriched component may be communicated with water-discharge well section arranged under the separation chamber. The separation chamber height exceeds thickness of central water-oil dispersion layer formed between water-enriched component and oil-enriched component layers inside the separation chamber. ^ EFFECT: increased efficiency of underground oil dewatering, elimination the need of oil dewatering at ground surface. ^ 18 cl, 5 dwg |
