红河油田长8超低渗油藏水平井注水开发试验效果评价  

Testing results evaluation on water flooding with horizontal wells in Chang-8 ultra low permeability oil reservoirs of Honghe oilfield

作　　者：吴锦伟[1] 周思宾[1] 张本艳[1] 尹超[1] 

机构地区：[1]中国石化华北油气分公司勘探开发研究院,河南郑州450006

出　　处：《石油地质与工程》2016年第2期99-102,149-150,共4页Petroleum Geology and Engineering

基　　金：国家科技重大专项"鄂尔多斯盆地碎屑岩层系大中型油气田富集规律与勘探方向"项目(2011ZX05002)

摘　　要：红河油田长8超低渗油藏先期利用水平井分段压裂技术进行天然能量开发,存在递减快、采收率低的突出问题。为明确合理的开发技术政策,对注水开发试验区的井网井距、注采参数等进行跟踪评价,采用理论计算、相似油藏类比和矿场试验相结合的方法,重点就避免快速水窜、确保有效注水开展研究,明确了现有井网井距及油藏工程参数进一步优化的原则：1平注平采优于直注平采;2注采井距一般应大于700 m;3宜采用温和注水,单井注水压力应小于15 MPa,单井日注水量应控制在15-20 m3。基于研究成果,在红河油田长8油藏采用抽稀井网、适当扩大现有井距的方式,对其它的6个井组提出了油藏工程参数优化建议。In Chang-8 ultra-low permeability reservoir of Honghe oilfield,the multi-stage fracturing technology with horizontal well has been adopted for natural energy development,and there were prominent problems of fast decline and low recovery ratio.In order to make reasonable technology,the evaluation on well pattern,well spacing,injection-production parameters of water flooding development in the testing area has been carried out.In combination with the theoretical calculation,the similar reservoir simulation and field test,the research on avoiding rapid water channeling and ensuring effective water flooding has been conducted.The optimized principles for present well pattern,well spacing and reservoir engineering parameters have been made clear:(1)flat injection flat production is superior to direct injection flat production;(2)the injection-production well spacing should be generally greater than 700 m;(3)moderate water injection should be adopted,the water injection pressure for single well should be less than 15 MPa,and water injection for single well should be controlled among 15 ~ 20 m3.Based on this research results,thinning well pattern and appropriately enlarged the present well spacing have been adopted in Chang-8 oil reservoirs of Honghe oilfield,and the suggestion on optimizing reservoir engineering parameters for other 6 well groups has been put forward.

关 键 词：红河油田 长8储层 超低渗油藏 水平井注水 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]