缝洞型碳酸盐岩油藏并行模拟器及其应用研究  

A Parallel Reservoir Simulator for Fractured-Vuggy Carbonate Reservoirs

作　　者：李毅[1] 张可霓 胡立堂[1] 康志江[3] 张冬丽[3] 赵艳艳[3] 张允[3] Li Yi;Zhang Kenie;Hu Litang;Kang Zhijiang;Zhang Donglia;Zhao Yanyana;Zhang(College of Water Science, Beijing Normal University, Beijing 100875, China;Earth Sciences Divison, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;Petroleum Exploration ＆ Production Research Institute, SINOPEC, Beijing 100083, China)

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]美国劳伦斯伯克利国家实验室地球科学部,ca94720 [3]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《地质科技情报》2018年第1期223-230,共8页Geological Science and Technology Information

基　　金：国家国防科工局高放废物地质处置研究开发B项目(科工计(2012)240号);中央高校基本科研业务费专项资金"压缩空气地下含水层储能的关键技术研究"

摘　　要：在成熟应用的缝洞型碳酸盐岩油藏模拟器KarstSim的基础上,针对更加精细和大规模网格的模拟需求,开发了KarstSim的并行模拟器。并行化主要通过网格分区、大型线性方程解法和处理器之间信息通讯3个部分实现,同时借助了Aztec库和METIS软件。基于Buckley-Leverett两相纵向流动理论和塔河油田某区块的模型,对并行版与解析解、单机版计算结果的对比,验证了并行模拟结果的准确性以及计算的效率性。将并行模拟器应用至64万网格非均质的缝洞型油藏,在最高采用128核服务器中模型计算时间最低为7.3h,计算效率提升显著。最后对不同网格规模的均质油藏进行了模拟,网格规模从1万逐渐增加到1千万规模,结果显示对于千万级网格的均质油藏,并行模拟器计算时间为85min,证实了并行模拟器在大规模油藏模拟中的实用性。To meet the requirement of large-scale fine reservoir simulation in the unconventional reservoir,we have developed a KarstSim parallel reservoir simulator based on its successful application in fracturedvuggy carbonate reservoirs.There are mainly three steps to implement this simulator,grid domain partitioning,assembly and solution of linearized equation systems and communication between processors.Also we have utilized Aztec package and METIS software to complete KarstSim-MP.The Buckley-Leverett two-phase vertical flow model and a block model in Tahe Oilfield are simulated to compare the analytical solution with the numerical solution and PC to parallel solution.The study verifies the accuracy of the parallel simulation result and effectively enhances computational efficiency.The simulation was conducted of the heterogeneous fractured-vuggy reservoir with 640 thousand scale grids.The simulation time can reach to 7.3 hours with the 128 CPUs and the computational efficiency increased obviously.The simulation of different scales of homogeneous reservoir produced the computational efficiency rising from 10 thousand to10 million.The results show the simulation time will decrease to 85 minute and will effectively increase computational efficiency for its application in large-scale reservoir simulation.

关 键 词：KarstSim 缝洞型油藏 油藏模拟 并行方法 计算效率 

分 类 号：TE19[石油与天然气工程—油气勘探]