关键词: 低渗裂缝, 裂缝预测, 模糊识别, 剩余油, 调整挖潜, 苏北盆地

Abstract:

Pu member 2 reservoir,Jiangsu BD,is a low permeability fractured one.Effectiveness of water flooding is relatively poor,the majority of the oil wells,because of high watercontaining,is stopped producing and injecting,awareness of the oil is very seldom duo to the fracture influence on the remaining oil.Aiming at the oilfield geological characteristics and waterproducing situation,the focus is to use seismic data fuzzy recognition technology to establish mathematical model of reservoir characteristics and fracture development scale by analyzing seismic characteristics，in the combination of sedimentary facies and fractures,the fine geological model is re-established,water drive characteristic curves and numerical simulation are applied to calculate and simulate the distribution of remaining oil,the insitu adjustment wells after operation verifies the recognition of remaining oil,some effects are achieved,and foundation is provided to followingup continuous adjustment.

Key words: low permeability fracture, fracture forecasting, fuzzy recognition, remaining oil, adjustment and potential exploitation, Subei Basin