七八区八道湾组砾岩油藏高含水期提高采收率技术  

RECOVERY RATE IMPROVEMENT IN HIG- WATER- CUT PERIOD OF THE CONGLOMERATE RESERVOIR OF BADAOWAN FORMATION IN THE NO. 7 TO 8 DISTRICT

作　　者：侯文锋[1] 金萍[1] 周庆[1] 尚娅敏[1] 史乐[1] 

机构地区：[1]中国石油新疆油田分公司采油二厂,新疆克拉玛依834008

出　　处：《新疆石油天然气》2014年第3期45-51,6,共7页Xinjiang Oil & Gas

摘　　要：七八区八道湾组砾岩油藏历经三十多年注水开发,注水井井况变差,分注率降低,年含水上升率达3.0%,绝对递减率10%。为改善油藏开发效果,开展精细油藏描述,重塑地下认识,指导注采系统调控;开展注水专项治理,完善注采井网、全面细分开发层系,提高水驱控制程度;并以合理开采技术界限研究成果为指导,精细注水调控;结合深部调驱、变强度注水,扩大注水波及体积。截止2012年减缓递减增油量8.1×104t;综合含水由81.0%降至目前的79.4%,采收率由44.2%提高至50.6%,成为国内第一个采收率突破50%的整装砾岩油藏。After 30 years of waterflood development,the conglomerate reservoir of Badaowan formation in the No.7- 8 District is serious in developing. The success rate of sub- injection wells is getting lower,the water- cut increasing rate is 3. 0%,the absolute decline rate is 10. 0%. In order to improve reservoir development effect,some methods had been selected to make the fine reservoir description,reshape the underground knowledge,guide the injection- production system adjustment,carry out the water injection special governance,perfect the injection- production well pattern,subdivide the straticulate exploration,improve the degree of water flooding control. Guided by the results of reasonable drilling for oil technology boundaries,deep profile modification and variable intensity of water injective are combined,the wave and volume of water injection was expanded. By the year 2012,8. 1 × 104 tons of decline oil had been saved,the comprehensive water cut had been from 81. 0% to79. 4%,the recovery ratio had been from 44. 2% to 50. 6%.

关 键 词：七八区八道湾组 细分开发层系 精细注水 合理开采界限 

分 类 号：TE327[石油与天然气工程—油气田开发工程]