长宁地区石英砂替代陶粒先导性试验及效果评价  被引量:8

PILOT TEST AND EFFECT EVALUATION OF REPLACEMENT OF CERAMIC BY QUARTZ SAND IN CHANGNING AREA

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作  者:周小金 段永刚 朱愚[4] 阳星 苑术生 王虎军[6] 刘俊辰 ZHOU Xiaojin;DUAN Yonggang;ZHU Yu;YANG Xing;FAN Shusheng;WANG Fujun;LIU Juncheng(College of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu,Sichuan 610056,China;Shale Gas Research Institute of PetroChina Southwest Oil&Gas Field Company;Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation,Chengdu,Sichuan,China;Chongqing Gas Mine of PetroChina Southwest Oil&Gas Field Company;PetroChina Oil/Gas Field Co.Engineering Technology Department;Yumen Oilfield Branch Oilfiedl Operation Co.;PetroChina Southwest Oil/Gas Field Co.Sichuan Shale Gas Exploration and Development Co.Ltd.)

机构地区:[1]西南石油大学石油与天然气工程学院,成都市610056 [2]中国石油西南油气田公司页岩气研究院 [3]页岩气评价与开采四川省重点实验室 [4]中国石油西南油气田公司重庆气矿 [5]西南油气田公司工程技术处 [6]玉门油田分公司油田作业公司 [7]中国石油西南油气田公司四川页岩气勘探开发有限责任公司

出  处:《钻采工艺》2020年第1期57-60,I0004,共5页Drilling & Production Technology

基  金:国家科技重大专项“页岩气水平井体积压裂及排采技术研究与试验”(编号:2016ZX05062004);中国石油天然气股份有限公司勘探与生产分公司项目“中深层页岩气井完井及储层改造工艺技术研究与应用”(编号:kt2017-21-15)资助。

摘  要:为应对国际低油价冲击,北美页岩气开发区块大幅提高了石英砂使用比例,而国内页岩气井压裂主体采用70/140目石英砂+40/70陶粒组合支撑剂,陶粒约占70%。开展了石英砂室内导流能力测定,结合长宁地区页岩储层渗透率参数,采用数值模拟论证了石英砂替代陶粒在长宁地区可行。基于单井累计产量最大化的目标函数,明确了压裂试验参数:单段1800 m^3压裂液,160 t支撑剂,70/140目石英砂:40/70目石英砂=3∶7。先导性试验方案顺利实施后,降本增效显著,与地质参数相当的邻井相比,试验井折算1500 m改造段长测试产量提高67%,单井折算1500 m改造段长支撑剂成本降低145万元。进一步论证了试验方案的可行性,为后期石英砂替代陶粒推广应用积累了宝贵的现场经验。In order to cope with the impact of low international oil price,the shale gas development play in North America has significantly increased in proportion of quartz sand use,while the domestic shale gas well fracturing adopts the combination of quartz sand with 70/140 mesh and 40/70 ceramic proppant,and ceramic accounts for about 70%.The indoor measurement of the flow conductivity of quartz sand was measured and the feasibility of replacing ceramic with quartz sand in Changning area was demonstrated by numerical simulation.Based on the objective function of maximizing the cumulative production of a single well,such fracturing parameters are optimized as 1800m^3 fracturing fluid,160 tons of proppant agent and the continuous sanding operation with the combination of 70%70/140 mesh and 30%40/70 mesh quartz sand.The program was successfully implemented in Changning area,and achieved significant cost-reducing and synergistic effects.Compared with adjacent wells with similar geological parameters,the tested output increased by 31%,and the proppant cost of a single well could be saved by 1.45million yuan by preliminary calculation,which further supported the feasibility of the test scheme and accumulated valuable field experience for the later application and popularization of quartz sand to replace ceramic.

关 键 词:页岩气 石英砂替代陶粒 导流能力 长宁区块 

分 类 号:TE377[石油与天然气工程—油气田开发工程]

 

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