安塞油田长6裂缝型储层生化二元驱先导试验  

PILOT TEST OF BIOCHEMICAL FLOODING IN FRACTURED RESERVOIRS CHANG 6 AT ANSAI OILFIELD

作　　者：杨剑[1] 白玉军[1] 李东旭[1] 李冰 李斌[1] 张蓓[1] 

机构地区：[1]中石油长庆油田第一采油厂 [2]中石油长庆油田第五采油厂

出　　处：《钻采工艺》2017年第1期65-68,共4页Drilling & Production Technology

基　　金：国家高技术研究发展计划(863计划)项目"微生物采油关键技术"(编号:2013AA0644);国家科技重大专项项目"高矿化度油藏微生物驱油体系研究及先导试验"(编号:2012ZG008)

摘　　要：针对安塞油田长6裂缝型储层常规开发方式效果差、采收率低的特点,探索了生化二元驱改善裂缝型油藏开发效果、提高采收率的方法。通过室内驱油性能评价,优化生化二元驱体系、优选措施区块,在安塞油田长6裂缝油藏完成现场先导试验。在生化二元驱室内提高采收率性能评价的基础上,优化设计了生化二元驱工艺方案。体系室内评价性能达到封堵率在80%以上,驱油效率比水驱提高15%以上,先导试验3个井组,对应油井20口,试验后见效井10口,见效比50%,累计增油1 663.65 t。通过方案实施效果来看,在裂缝型油藏中实施生化二元驱,可有效改善水驱开发效果,提高油井产量。To solve the problem of low efficiency and low recovery rate of conventional oil development methods for fractured reservoir Chang 6 at Ansai oilfield,study was carried out on biochemical binary flooding. Through lab evaluation of oil displacement behavior,optimization of binary biochemical flooding system,selection of optimum operation block,the pilot test was completed in Chang 6 fractured reservoir at Ansai oilfield.Based on the indoor evaluation of its EOR performance,the biochemical binary flooding process was optimized. The blocking rate was over 80% in the indoor evaluation,the oil displacement efficiency was 15% higher than the water flooding. The pilot test was conducted in 20 wells in 3 well groups,proved effective in10 wells, effective rate 50%, the accumulated oil increase 1663.65 tons. The test proved the binary biochemical flooding in fractured reservoirs could effectively improve the effects of water flooding and improve the output of oil wells.

关 键 词：安塞油田 裂缝储层 生化二元驱 先导试验 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]