METHOD OF TREATMENT OF BOTTOM-HOLE ZONE Russian patent published in 2001 - IPC

Abstract RU 2169260 C1

FIELD: oil producing industry. SUBSTANCE: method includes injection of acid solution at low pressure of injection, and injection of plugging material at increased pressure of injection. Injection pressure of acid solution is reduced to zero value at well head. Injection pressure of plugging material is increased up to jumpwise rise of pressure of plugging material is increased up to jumpwise rise of pressure at wellhead. Then, injection is carried out at steady pressure, and solution is injected to bottom-hole zone beginning from lower perforation holes, and injection of plugging material is effected beginning from upper perforated holes. EFFECT: higher efficiency of treatment of bottom- hole zone, reduced water cutting of well production. 3 ex

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RU 2 169 260 C1

Authors

Gudoshnikov A.S.

Shpan V.Ja.

Filatov V.V.

Gorbunov A.T.

Petrakov A.M.

Dates

2001-06-20Published

2000-02-15Filed