摘要
在国内外蒸汽驱调研的基础上,以国内某油田区块单个井组为例,采用数值试验方法进行水平井蒸汽驱注采参数优化研究,随后对整个区块进行水平井蒸汽驱方案预测。研究表明:最优注采参数为,水平生产井布在距油层底部1/4油层厚度处,垂直注汽井射孔位置为在距油层底部20%~25%油层厚度处,每口水平生产井的注汽井数为4口,水平井水平段长度应取300 m,井排距为140 m;整个区块内,采用水平井蒸汽驱技术最终可提高采收率12%以上,该结果可为实际区块实行水平井蒸汽驱开采方案实施提供技术支持,为其他同类型油藏的开采提供借鉴。
On the basis of literature investigation about steamflooding,the numerical simulation method is used to optimize the injection-production parameters of steamflooding with vertical injector and horizontal producer,subsequently,the development performance of steamflooding with horizontal wells of the entire block is forecasted. The results indicate,the best production conditions are:the horizontal producer should be located closely to the bottom of the reservoir,the vertical injector should be perforated with a distance of 20%-25%thickness to the bottom,each horizontal producer should allocated with 4 injectors,the length of the horizontal well should be 300 m,the distance between horizontal wells should be 140 m. The recovery factor will be enhanced by above 12% by using steam driving with horizontal wells. The results can be employed to guide the spot execution of steamflooding with horizontal wells.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2013年第S2期3804-3811,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(50874082)
西南石油大学油气藏地质及开发工程国家重点实验室开放基金项目(PLN1131)
四川省教育厅重点科研项目(09ZA139)
关键词
数值模拟
水平井
蒸汽驱
多场耦合
numerical simulation
horizontal well
steamflooding
multi-field coupling
