柳沟区块层系调整及井网优化技术应用  

Application of layer system adjustment and well pattern optimization technology in Liugou Block

作　　者：樊欣欣 李键 仵改 FAN Xinxin;LI Jian;WU Gai(Fuxian Oil Production Plant,Yanchang Oilfield Co.,Ltd,Fuxian 727500;Dingbian Oil Production Plant,Yanchang Oilfield Co.,Ltd,Dingbian 718600,China)

机构地区：[1]延长油田股份有限公司富县采油厂,陕西富县727500 [2]延长油田股份有限公司定边采油厂,陕西定边718600

出　　处：《延安大学学报（自然科学版）》2024年第1期35-39,共5页Journal of Yan'an University：Natural Science Edition

摘　　要：为提高多层系油藏叠合发育区块开发效果,以柳沟区块为研究区,考虑投入产出比、井筒寿命及水淹规律,分析叠合区层系调整时机,利用数值模拟进行井网优化选择。结果表明,当油井成本大于收益、套损井平均生产年限为12年及快速水淹时宜进行研究区层系调整;选择反七点井网调整时研究区采收率最高;通过井网调整,注采对应率明显提高(21%),水驱动用程度明显提高(42.22%),自然递减率明显下降(11.77%下降为6.58%),最终采收率明显增加(6.02%),技术可采储量明显增加(85.75×10^(4)t)。该研究可对柳沟区块及同类区块的有效开发提供理论指导。To improve the development effect of overlapping development block in multi-layer reservoir,Liugou Block was taken as the research area,considering the input-output ratio,wellbore life,and waterlogging rule,the timing of the superposed layer adjustment was analyzed,and the well pattern was optimized by numerical simula-tion.The results show that when the cost of the well was greater than the benefit,the average production life of the casing loss well was 12 years and the time of rapid flooding,the stratification of the study area was adjusted.The recovery efficiency of the study area was the highest when the reverse seven-point pattern adjustment was selected.Through the adjustment of well pattern,the corresponding rate of injection and production was significantly increased(21%),the degree of water driving was significantly increased(42.22%),the natural decline rate was significantly decreased(11.77%decreased to 6.58%),the final recovery rate was significantly increased(6.02%),and the technically recoverable reserves were significantly increased(85.75×10^(4) t).The study provides theoretical guidance for the efficient development of Liugou Block and similar blocks.

关 键 词：多层系油藏 柳沟区块 调整时机 井网优化 

分 类 号：TE348[石油与天然气工程—油气田开发工程]