低渗强非均质性碳酸盐岩气藏优化配产新方法  

A new method for optimal production allocation in low permeable and strongly heterogeneous carbonate gas reservoirs

作　　者：陈刚[1] 舒维[1] 白江[1] 孙兵华 王伟龙 袁耀利 蔡珺君 邓菱璐 李浩 CHEN Gang;SHU Wei;BAI Jiang;SUN Binghua;WANG Weilong;YUAN Yaoli;CAI Junjun;DENG Linglu;LI Hao(Wuqi Oil Production Plant,Yanchang Oilfield Co.,Ltd.,Wuqi 717600,China;Exploration and Development Research Institute,Southwest Oil&Gas Field Company,PetroChina,Chengdu 610041,China;Sichuan Huayou Group Co.,Ltd.,Chengdu 610041,China;Chuangxibei Gas Mine,Southwest Oil&Gas Field Company,PetroChina,Jiangyou 621700,China)

机构地区：[1]延长油田股份有限公司吴起采油厂,陕西吴起717600 [2]中国石油西南油气田公司勘探开发研究院,四川成都610041 [3]四川华油集团有限责任公司,四川成都610041 [4]中国石油西南油气田公司川西北气矿,四川江油621700

出　　处：《断块油气田》2024年第1期154-159,167,共7页Fault-Block Oil & Gas Field

摘　　要：针对低渗强非均质性碳酸盐岩气藏开发早期经典气井优化配产方法的不适应问题,文中建立了基于节点分析法的径向复合地层系统流动方程,以及地层压力描述方程、流动压力描述方程与井筒流动方程联合求解的动态资料耦合优化配产方法。在产量优化过程中,首先用图解法确定气井的产量区间,再采用耦合优化配产方法确定气井不同生产制度下油压、稳产期等动态变化规律,以此为依据对气井配产进行优化。该方法已在四川盆地某特大型气藏进行了应用,应用结果符合气藏地质和生产动态认识,验证了其实用性与可靠性。In view of the inadaptability of the classical gas well optimal production allocation method in the early stage of the development of low permeable and strongly heterogeneous carbonate gas reservoirs,flow equations of radial composite formation system based on the node analysis method was established,and the dynamic data coupling optimal production allocation method for the joint solution of the formation pressure description equation,the flow pressure description equation and the wellbore flow equation were put forward.In the process of production optimization,the production interval of the gas well was determined by graphical method firstly,and then the dynamic change laws of tubing pressure and stable production period under different production systems of the gas well was determined by using the coupling production allocation optimization method,so as to optimize the gas well production allocation.This method has been applied in a super large gas reservoir in Sichuan Basin,and the application results are consistent with the understanding of gas reservoirs geology and production performance,which verifies its practicability and reliability.

关 键 词：碳酸盐岩气藏 低渗 强非均质性 优化配产 四川盆地 

分 类 号：TE344[石油与天然气工程—油气田开发工程]