OIL DEPOSIT EXTRACTION METHOD Russian patent published in 2005 - IPC

Abstract RU 2247230 C1

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes construction of wells and oil and gas collection system, forcing water from water-bearing level into oil deposits, flow of oil from oil deposits into secondary deposit and following extraction of oil from secondary deposit for useful implementation. Resources of deposit are separated on basis of natural energy characteristic on screened and having rigid water-forcing mode. Deposit is operated by three well types. Of the latter flow wells connect oil deposits to secondary deposit for flowing and collection of oil in upper bed under effect from gravitation. Balancing wells connect screened deposits and secondary deposit to water-forcing level for balancing of bed pressures and preventing loss of rocks stability. Extraction wells connect secondary deposit to oil and gas collection system. Selection of bed for secondary deposit is performed from number of highly penetrable beds, having maximally allowed excess over oil deposits.

EFFECT: higher oil yield, higher effectiveness.

5 cl, 3 dwg

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RU 2 247 230 C1

Authors

Smirnov V.I.

Dates

2005-02-27—Published

2003-07-30—Filed