断控型碳酸盐岩油藏动态储量计算方法  

Dynamic Reserves Calculation Method for Fault-Controlled Carbonate Reservoirs

作　　者：耿洁 乐平[1] 杨文明 杨博 赵彬 张如杰 GENG Jie;YUE Ping;YANG Wenming;YANG Bo;ZHAO Bin;ZHANG Rujie(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China;PetroChina Tarim Oilfield Company,Lunnan Oil and Gas Production Management Area,Korla,Xinjiang 841000,China;PetroChina Tarim Oilfield Company,Donghe Oil and Gas Production Management Area,Korla,Xinjiang 841000,China)

机构地区：[1]西南石油大学油气藏地质及开发工程全国重点实验室,成都610500 [2]中国石油塔里木油田分公司轮南采油气管理区,新疆库尔勒841000 [3]中国石油塔里木油田分公司东河采油气管理区,新疆库尔勒841000

出　　处：《新疆石油地质》2024年第4期499-504,共6页Xinjiang Petroleum Geology

基　　金：四川省科技厅区域创新合作项目(20QYCX0028)。

摘　　要：断控型碳酸盐岩油藏非均质性强,不同尺寸的孔、缝、洞交错发育,采用一般物质平衡方法计算的动态储量可能大于静态储量。在引入水油比的基础上,考虑孔缝洞介质不同时的岩石压缩系数,得到了适用于断控型油藏的综合压缩系数,并在此基础上建立了断溶体流动物质平衡新方程,通过数值模拟,验证了新方程的准确性与适用性。结果表明:新方程计算的动态储量与数值模拟得到的静态储量误差仅为0.1099%,验证了新方程准确可靠;哈拉哈塘地区多口井用新方程计算的动态储量与地质建模雕刻的静态储量相对误差为-4.82%~-0.15%,远远低于物质平衡方程计算的动态储量与静态储量的相对误差,新方程计算结果更接近实际情况,更适用于哈拉哈塘地区断控型碳酸盐岩油藏的储量计算。Fault-controlled carbonate reservoirs are highly heterogeneous,with interweaving development of pores,fractures,and vugs of various sizes.For this kind of reservoirs,the dynamic reserves calculated using conventional material balance methods may be larger than the static reserves.By incorporating water-oil ratio and considering rock compressibility coefficients for different pore-fracture-vug media,a comprehensive compressibility coefficient suitable for the fault-controlled reservoirs was derived.On this basis,a new flow material balance equation was established for the fault-karst reservoir,and its accuracy and applicability were verified using numerical simulation.The research results show that the dynamic reserves calculated by the new equation have an error of only 0.1099%with the static reserves obtained from numerical simulation,confirming the new equation’s reliability and accuracy.In the Halahatang area,the relative error between the dynamic reserves calculated using the new equation and the static reserves derived from geological modeling for multiple wells ranged from-4.82%to-0.15%,which is significantly lower than that calculated using the conventional material balance equation.The results obtained from the new equation are closer to actual conditions,making it more suitable for calculating the reserves of the fault-controlled carbonate reservoirs in the Halahatang area.

关 键 词：断控型油藏 碳酸盐岩 水油比 岩石压缩系数 流动物质平衡 动态储量 

分 类 号：TE344[石油与天然气工程—油气田开发工程]