深层稠油高盐水驱油藏深部化学调驱技术的应用——以吐哈油田鲁X区块为例  

Application of deep chemical profile control and flooding technology in deep heavy oil and high salt water drive reservoir——by taking Lu X block of Tuha oilfield as an example

作　　者：黄兆海 HUANG Zhaohai(External Market Project Management Department of Liaohe Oilfield Company,PetroChina,Panjin,Liaoning 124010,China)

机构地区：[1]中国石油辽河油田分公司外部市场项目管理部,辽宁盘锦124010

出　　处：《石油地质与工程》2021年第6期110-113,共4页Petroleum Geology and Engineering

摘　　要：吐哈油田鲁X区块为深层稠油高盐水驱油藏,受层间、层内非均质性等因素影响,存在注水井指进现象突出,油井水窜严重及应用调剖体系效果差的问题,为此研究了一种具有耐盐、抗剪切、封堵率高、有效期长、驱替效果好的两段塞深部调驱剂,并提出了"近井调堵、远井驱油、先堵后调"的调堵、驱油结合的调驱思路。通过室内评价和现场实施表明:两段塞深部调驱剂黏损率小、封堵率达到90%以上,驱油效果好,可满足深层稠油高盐水驱油藏调驱需求。深部化学调驱技术的实施抑制了水窜优势通道,改善了油层吸水情况,扩大了水驱波及范围,增油效果明显,为同类油藏提高注水开发效果提供了一种新方法。Lu X block of Tuha oilfield is a deep heavy oil and high salt water drive reservoir.Affected by strong interlayer and interlayer heterogeneity,there are some problems,such as prominent fingering of water injection wells,serious water channeling of oil wells and poor effect of profile control system.Therefore,a double-slug deep profile control agent with salt tolerance,high shear resistance,high plugging efficiency,long effective period and good displacement effect has been studied.The indoor evaluation and field implementation show that the viscosity loss rate of the double-slug deep profile control and displacement agent is small,the plugging rate reaches more than 90%,and the oil displacement effect is good,which can meet the profile control and displacement requirements of deep heavy oil and high salt water flooding reservoirs.The implementation of deep chemical profile control and flooding technology inhibits the dominant channel of water channeling,improves the water absorption of oil layer,expands the spread range of water flooding,and has obvious oil increase effect.It provides a new method to improve the effect of water injection development for similar reservoirs.

关 键 词：吐哈油田 深层稠油 高盐水驱 化学调驱 增油效果 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]