文东复杂断块油田开发的几点认识  

Some Knowleges of Wendong Complicate Fault Block Oil Field

作　　者：李战良[1] 张中伟[1] 史小平[2] 

机构地区：[1]中原石油勘探局采油一厂 [2]中原石油勘探局勘探开发科学研究院

出　　处：《断块油气田》2000年第2期38-40,共3页Fault-Block Oil & Gas Field

摘　　要：文东油田属于异常高温、高压、低渗透复杂断块油田。由于其油层埋藏深、储层物性差、层间差异大、油气比高及含盐量大的特点 ,给该油田的开发提出了严峻的课题。在没有同类油田可借鉴的情况下 ,经过 11a的开发实践 ,摸索出了一套适合文东复杂断块油田开发的成功经验。通过对油田实施高压注水 ,地层压力回升 ,油田递减减缓 ,但要恢复到原始地层压力却很困难 ;压裂改造在油井投产初期和注水见效之后 ,通过优化选井和压裂方式 ,可以取得较好的增油效果 ;气举采油有效克服了高油气比和结盐、结蜡及井深、井况差的影响 ,提液效果好 ;逐层上返实验提高了采油速度和水驱动用程度 ,改善开发效果 ,为解决层间干扰、平面效率低等问题提供了经验借鉴。Wendong oil field belongs to a complicate fault block oil fields with abnormal high temperature,high pressure,low permeability.Because the field has characters tha t reserviors are buried deeply,and its physical properties are poor,interlayer d ifferences are significant.Oil gas ratio is high and has a high aquifer and sa lt content,A Serious problems are put forward for us to develop it.Through 8 ye ars development,we get successful experience for complicate fault block oil field development,there are four respects.①lnjected water with high pressure have been adop ted to make pressure build up and output depletion has slown down,but it is diff icult to recovery in situ formation pressure.②Fracturing i mproving has won an effect in the earlier time of putting into production a nd after the injection water by optimizing selecting wells and fracturing tech nique.③Gas lift has overcome high oil gas ratio and salt deposit,wax depos ition and also the influnce of well depth and poor well conditions.Pump ing liquid has good effect.④Developing upward in turn intervel may increase r ecovery and the degree of water flooding,improving developing effect and pro vide the reference experience to solve the problems of interlayer interference a nd low plane efficency.

关 键 词：断块油田 高压注水 气举采油 压裂改造 油田开发 

分 类 号：TE346[石油与天然气工程—油气田开发工程]