页岩气藏合理开发方式及井型优选  

Reasonable development method and well type selection of shale gas reservoir

作　　者：彭彩珍[1] 薛晓宁[1] 杨满平[2] 张景涛[2] 任玉洁[1] 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]燕山大学车辆与能源学院,河北秦皇岛066000

出　　处：《油气藏评价与开发》2016年第6期67-74,共8页Petroleum Reservoir Evaluation and Development

摘　　要：面对我国石油能源短缺及常规天然气不足的现状,三大非常规气藏之一的页岩气藏在能源供给中占有非常大的优势。在分析研究区页岩气藏地质概况、储层物性及试采资料的基础上,结合国内外页岩气藏开发经验,初步确定该气藏的开发方式为衰竭式开采。页岩气藏只有经过压裂作业后才能形成工业气流,加之研究区储层具有酸敏、水敏的特点。因此,选择可以克服这些缺点且具有泡沫携砂能力、助排能力等优点,低滤失特性和经济效益好的CO2泡沫压裂技术为最终的储层改造措施。关于布井方案,重点设计三套井网部署方案进行对比分析,考虑布井成本、年总产气量及所布新井数目,最终确定以分支鱼骨状水平井为主的混合井网为最优井网部署方案。对今后的页岩气开发布井方案起到一定的指导作用。According to the shortage of petroleum and conventional natural gas in China, as one of three kinds of unconventional gas reservoir, shale gas reservoir has an advantage of energy supply. Based on the analysis of general geology, reservoir physical property, production test and combined with shale gas reservoir development experience, it is primary defined that this shale gas reservoir adopts depletion recovery method and only by fracturing, the reservoir can form industrial gas flow, in addition, according to the characters of acid sensitivity and water sensitivity in study area, CO2 foam fracturing technology is selected out as the terminal reservoir transform measure due to the advantages of proppant carrying capacity of foam fluid, cleanup ability, low filtration characteristics and good economic benefits. For pattern of well, this paper designs three sets of well pattern deployment schemes. By the consideration of well pattern cost, total gas production per year and new well deployment number, the mixed well pattern which based on branch herringbone horizontal well is determined as the final scheme, thereby providing references for pattern of well in shale gas development.

关 键 词：页岩气 开发方式 井网部署 CO2泡沫压裂技术 

分 类 号：TE34[石油与天然气工程—油气田开发工程]