塔河油田缝洞型油藏开发模式及提高采收率

doi:10.11743/ogg20120423

Abstract

Abstract:

The fracture-vug carbonate reservoir of A area in Tahe oilfield is a complex oil reservoir consisting of various spatially superimposed and connected fracture-vug units with multiple pressure systems and complex water-oil contacts.These fracture-vug units differ greatly in driving mechanism and production characteristics.The type-Ⅰ unit is dominated by water drive,the type-Ⅱ unit features in alternating water drive and elastic drive,while the type-Ⅲ unit is predominantly of elastic drive is for.According to the geological features of the reservoirs,this paper proposes a development scheme,i.e.taking the fracture-vug unit as the basic development blocks and implementing differential development,and presents an EOR method that is single well water injection to drive oil and multi-wells unite water injection for development.An additional recovery efficiency of 3.7% is obtained after field application of this method.

Key words: fracture-vug reservoir, carbonate rock, development scheme, Tahe oilfield, Tarim Basin

CLC Number:

TE359

Zhan Junyang, Ma Xujie, He Changjiang. Development scheme and EOR technique of fracture-vug reservoirs in Tahe oilfield[J]. Oil & Gas Geology, 2012, 33(4): 655-660.

References

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Development scheme and EOR technique of fracture-vug reservoirs in Tahe oilfield

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