水驱油藏多井系统井间干扰规律分析  

Interwell interference rule under multiple well system in water flooding reservoir

作　　者：赵秀娟[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《东北石油大学学报》2012年第6期59-64,9-10,共6页Journal of Northeast Petroleum University

基　　金：大庆油田4000万吨持续稳产关键技术重大专项(DQP-2011-YC-KY-011)

摘　　要：为了对大庆油田水驱油藏层系井网进行优化调整和剩余油挖潜,研究特高含水期多井系统井间干扰规律,应用势的迭加原理分析3口井的激动井产量、距离及相互位置对观察井(油井)产量和压力的影响.结果表明,当激动井是油井时,激动井产量越大,与观察井距离越近,激动井之间距离越远,观察井产量越小,压力恢复越低;当激动井是水井时,激动井注水量越大,与观察井距离越近,激动井之间距离越远,观察井产量越大,压力恢复越高.在采用均匀井网时,油井间的影响使观察井产量降低、压力下降;注水井的影响使观察井产量上升、压力升高.特高含水期剩余油分布零散,采用均匀井网可以有效挖潜剩余油,可以通过注水调整观察井产量和压力,均匀井网更有利于提高油田注水开发效果.Influence of liquid rate,distance and location of perturbed well on liquid rate and pressure in observation well were studied using the stack principle of potential functions in order to work out interwell interference mechanism in water flooding reservoir that there exists multi wells during high water cut stage.The result indicated that liquid rate and pressure of observation well will decrease if the liquid rate in perturbed wells increase or distance between observation well and perturbed wells decrease or distance between perturbed wells increase on condition that perturbed wells are producer.Liquid rate and pressure of observation well will increase if the liquid rate in perturbed wells increase or distance between observation well and perturbed wells decrease or distance between perturbed wells increase on condition that perturbed wells are injector.Liquid rate and pressure of observation will decrease under the influence of perturbed wells(producer) in even well net.Liquid rate and pressure of observation will increase under the influence of perturbed wells(injector) in even well net.Even well net is beneficial to water flooding in view of it can produce scattered remaining oil and the liquid rate of observation well can be enhanced through adjuring water injection.

关 键 词：水驱 井间干扰 产量 压力 井距 激动井 观察井 开发效果 大庆油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程] TE357.6