J油藏层间干扰系数变化规律研究与实践

Study on variation law of interlayer dynamic interference coefficient in J reservoir

J油田目前处在开发早期,储层结构复杂,在平面上河道窄、多期砂体叠置交错,纵向上小层发育较多、厚度薄,油田投产时间短,测试资料少,目前合采层间干扰大,制约油田产能建设。利用油藏工程方法、油藏数值模拟法结合矿场试验,开展薄互层油藏层间动态干扰系数变化规律研究。得出的结论是,在含水率大于40%时,产油干扰系数逐渐增大,应在含水率小于40%采取合理的工作制度等开发策略获得更高的可采储量,提高油田开发水平。

J oilfield is currently in the early stage of development with complex reservoir structure,narrow channel and staggered multi-stage sand bodies in plane, more vertical small layers, thinner thickness, shorter production time and less testing data.At present, the interference between combined production layers is large, which restricts the productivity construction of oilfield.Using reservoir engineering method,reservoir numerical simulation method and field test, the variation law of interlayer dynamic interference coefficient in thin interbedded reservoir is studied.The conclusion is that when the water cut is more than 40 %, the interference coefficient of oil production increases gradually.The development strategies such as reasonable working system and subdivision of strata should be adopted to obtain higher recoverable reserves and improve the level of oilfield development.