METHOD FOR OBTAINING HARD TO RECOVER OIL RESERVES Russian patent published in 2005 - IPC

Abstract RU 2258133 C1

FIELD: oil production industry, particularly to obtain hard to recover oil reserves, mainly for carbonate reservoirs of nonuniformly saturated laminated stratums.

SUBSTANCE: method involves installing mast for swabbing on landing flange with the use of bolt connection with choosing height thereof of 3-4 m before downhole work initiation; successive grouping swabbed wells in dependence of obtained results after downhole work completion; operating wells in which output was increased or recovered in prior mode, namely in mechanized one, with bore-hole pump usage. Wells in which high output is obtained due to swabbing are operated under swabbing conditions. Wells in which output did not increase are operated with the swab usage by alternating product accumulation cycle with cycle of product pumping from well.

EFFECT: increased efficiency due acting on stratum by swabbing thereof with taking under consideration well conditions.

2 cl, 2 dwg

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RU 2 258 133 C1

Authors

Khuzin R.R.

Takhautdinov R.Sh.

Shafigullin M.G.

Timirov V.S.

Shajakhmetov A.Sh.

Dates

2005-08-10Published

2004-02-18Filed