Feasibility Study of Dumpflooding Technology for Bachu Reservoir in Tazhong 4 Oilfield,Tarim Basin

doi:10.7657/XJPG20160114

Abstract

Abstract: The pebbly sandstone section of the Carboniferous Bachu formation in Tachong 4 oilfield in Tarim basin is a layered edge water reservoir of burial depth of about 3 700 m and characterized by weak natural energy and low degree of formation pressure. The underlying Donghe sandstone section of it is characteristic of in?situ large water body and higher degree of formation pressure. The interlayer pressure difference between the 2 sets of series of strata or reservoirs ranges from 15 to 25 MPa. This paper analyzes the field case of in?situ dumpflooding from interlayer cross flow caused by the interlayer pressure difference, and builds a numerical model for the reservoir geology and development features of Tazhong 4 oilfield, by which the dumpflood development indices by using different types of producers (vertical well and horizontal well) as dumpwater injectors and different well patterns as well as interlayer cross flow are simulated. The results show thatapplication of dumpflood technology to such a layered edge water reservoir is feasible in this oilfield and further pilot test area of well group is selected as well

CLC Number:

TE331

TANG Yongliang, WANG Qian, LI Erpeng, GAO Dengkuan, LIAO Feiran, SU Zhou. Feasibility Study of Dumpflooding Technology for Bachu Reservoir in Tazhong 4 Oilfield,Tarim Basin[J]. , 2016, 37(1): 1-1.

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Feasibility Study of Dumpflooding Technology for Bachu Reservoir in Tazhong 4 Oilfield,Tarim Basin

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