蒸汽吞吐水平井割缝筛管完井参数优化模型

Parameter optimization model of slotted liner completion for horizontal well with steam huff and puff

庞伟 陈德春 岳慧 贺慧 李昌恒 姜立富

PANG Wei CHEN Dechun YUE Hui HE Hui LI Changheng JIANG Lifu

中国石化石油工程技术研究院，北京　100101 中国石油大学华东石油工程学院，山东东营　257061 中国石化胜利油田分公司河口采油厂，山东东营　257061

SINOPEC Research Institute of Petroleum Engineering and Technology, Beijing 100101, China College of Petroleum Engineering, China University of Petroleum, Dongying 257061, China Hekou Oil Production Plant, Shengli Oil.eld Company, Dongying 257200,China

为解决蒸汽吞吐稠油水平井割缝筛管完井理论研究落后于工程应用的问题，综合水平井蒸汽注入阶段、焖井阶段、生产阶段的传热与传质分析，建立了割缝筛管完井参数优化模型，分析了割缝宽度、筛管外径、割缝密度、割缝长度、单元割缝数、圆周割缝数、割缝堵塞对水平井产能的影响。结果表明：水平井产能随着割缝宽度、筛管外径、割缝密度、割缝长度、单元割缝数的增大而增大，且变化逐步趋于平缓；对割缝筛管完井水平井产能影响大的因素是割缝长度、割缝密度、割缝堵塞厚度；割缝堵塞最大可造成高达 65%的产能损失；以“砂桥”原则设计割缝宽度会限制产能，在高油价条件下可以考虑放大割缝宽度适度出砂。

In order to consummate the slotted liner design theory lagging behind application, the parameter optimization model of slotted liner completion for horizontal well with steam huff and puff is established based on the analysis on heat and mass transfer dur-ing steam injection, steam soaking and well production periods. The effects of 7 parameters on horizontal well productivity are studied, including slot width, liner diameter, slot density, slot length, slot number per slot unit, slot number per circle and slot blockage. Results show that productivity ascends with the increase of slot width, liner diameter, slot density, slot length and slot number per slot unit, and the variation gradually goes to be smooth. Slot length, slot density and slot blockage have significant influence on productivity, and slot blockage may lead to productivity loss as high as 65%. Slot width can be bigger than the one designed by “sand bridge” principle at high oil price.