利用试井数据约束的随机地质建模方法  

Stochastic geological modeling constrained by well test data

作　　者：冯国庆[1] 何玉俊 刘红林[2] 陈燕[3] 张萍[1,4] 薛芳芳[5] FENG Guoqing;HE Yujun;LIU Honglin;CHEN Yan;ZHANG Ping;XUE Fangfang(State Key Laboratory of Reservoir Geology and Development Engineering,Southwest Petroleum University,Chendu,Sichuan 610500,China;The Second Oil Production Plant,Xinjiang Oilfield Company,CNPC,Karamay,Xinjiang 834008,China;The Second Oil Production Plant,Henan Oilfield Company,SINOPEC,Nanyang,Henan 473100,China;Chongqing Fuling Shale Gas Exploration and Development Company,SINOPEC,Chongqing 408014,China;Oil and Gas Technology Research Institute,Changqing Oilfield Company,CNPC,Xi'an,Shaanxi 710018,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石油新疆油田分公司采油二厂,新疆克拉玛依834008 [3]中国石化河南油田分公司采油二厂,河南南阳473100 [4]中国石化重庆涪陵页岩气勘探开发有限公司,重庆408014 [5]中国石油长庆油田分公司油气工艺研究院,陕西西安710018

出　　处：《石油地球物理勘探》2020年第2期435-441,I0007,I0008,共9页Oil Geophysical Prospecting

基　　金：国家科技重大专项“低渗-超低渗油藏提高储量动用关键工艺技术”(2017ZX05013-005)资助。

摘　　要：传统的随机模拟方法建立的地质模型由于很少考虑动态资料而不能反映压力、产量等动态特征。为此,在前人研究的基础上,提出一种利用试井动态资料约束的随机地质建模方法,即由传统的随机模拟方法建立初始模型;再利用试井资料,采用模拟退火算法优化、修正初始模型,使之与试井测试结果相匹配。在修正地质模型中,采用解析解和数值解相结合的方法计算井底压力,可节约90%以上的计算时间。实例表明,修正后的模型符合试井测试(动态)资料,提高了地质模型的精度。Production performance data have seldom been involved in stochastic simulation;thus,it is difficult to describe such production performance as pressure and yield using the geologic model.We present a method for well test data constrained stochastic modeling.The initial model,which is built through stochastic simulation,is updated using simulated annealing algorithm until the model matches well test data.In this process,bottom hole pressure is calculated using analytic solution combined with numerical solution;this may save more than 90%of computation time.A case study shows that the final model has been improved and matches well test data.

关 键 词：随机模拟 试井数据约束 模拟退火 目标函数 地质建模 

分 类 号：P631[天文地球—地质矿产勘探]