摘要
辽河油田冷41块为典型的边底水稠油油藏,经过多年直井井网开发后,地层能量衰减,且底水锥进严重,开发状况不断恶化,导致采收率大幅度降低,大量剩余油滞留地下无法采出。针对该区块油藏特点和开发状况,利用水平井技术进行剩余油挖潜、难采储量动用、SAGD开发,采油速度从2003年底的1.21%提升至1.55%,使开发状况得到了明显改善。
After being developed with vertical well patterns during the past decade,the Leng 41 block of Liaohe oil field,as the typical heavy oil reservoir with edge and bottom water,became degraded with the energy,serious with bottom water coning and worse with development condition,which led to the serious reduction of recovery ratio and much more oil remaining underground.On account of the reservoir features and development condition,the horizontal drilling technique is applied to tap thd potential of remaining oil, employ the reserves difficult to recover and develop reservoir with SAGD.After the application of the technique,the oil recovery rate hsas risen up from1.21%to 1.55% since the end of 2003, and the development condition has been improved obviously.
出处
《重庆科技学院学报（自然科学版）》
CAS
2009年第5期33-35,共3页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
关键词
辽河油田
冷41块
边底水油藏
锥进
水平井
采油速度
Liaohe Oil-field
Leng 41 block
reservoir with edge and bottom water
water coning
horizontal drilling
oil recovery rate
