超低渗油藏超前注水井网适应性研究  

RESEARCH ON ADVANCED WATER INJECTION WELL PATTERN ADAPTABILITY IN ULTRA-LOW PERMEABILITY RESERVOIR

作　　者：张烈辉[1] 曾杨[1] 周志平 刘鑫[1] 周源[1] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500 [2]中国石油长庆油田分公司第二采油技术服务处,甘肃庆阳745100

出　　处：《西南石油大学学报（自然科学版）》2011年第3期101-104,196-197,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家973计划"碳酸盐岩缝洞型油藏注水开发研究"(2011CB201005)

摘　　要：B153区长63油藏属超低渗油藏,单井产量低、产量递减速度快、稳产困难,目前采用超前注水的开发方式,但是效果不明显,单井产量并未明显提高。利用油藏工程与数值模拟方法,结合该区目前采用的井排距组合及井网类型,分析了超前注水开发效果不理想的原因。认为:目前井距过大,注入水只起到稳压并未起到驱油的作用,应适当加密调整;计算得到其合理井距为258 m,排距为152 m;井网类型建议初期选择方形反九点井网,后期调整为五点井网。研究为具有类似特征的油藏能够采用合理的井网井距进行有效开发提供了借鉴。Chang63 reservoir of B153 area is an ultra-low permeability reservoir,in which low single-well productionand oil production depletes seriously,and it's very difficult to maintain stable production.Advanced water injectionis being adopted in this reservoir currently,but the effect is not apparent,and single-well production has not improvedsignificantly.Reservoir engineering and numerical simulation method are used in this paper,and combining withNo.3 Abstract IXcurrent well pattern and well space,we analyze the reasons why advanced water injection is not ideal.The resultindicates current well space is too large,and the injected water can only stabilize the pressure but can't drive theoil,so the well pattern should be appropriately adjusted.Its reasonable well spacing is 258 m,row spacing is 152 maccording to calculation.Square anti-nine-spot pattern in the early time and then adjust to five-spot pattern at thelate period of development are suggested.The study can be used for reference in arranging reasonable well spacingto make effective development in similar reservoirs.

关 键 词：超低渗 超前注水 井网井距 数值模拟 

分 类 号：TE33[石油与天然气工程—油气田开发工程]