提高复杂断块油藏建模精度的方法与对策  

Methods and countermeasures for improving modeling precision of complex fault block reservoirs

作　　者：窦松江[1] 江艳平[1] 石德佩 

机构地区：[1]中国石油大港油田公司勘探开发研究院 [2]中油国际(尼日尔)有限责任公司

出　　处：《录井工程》2018年第3期91-95,116,共5页Mud Logging Engineering

基　　金：中国石油天然气股份有限公司重大科技专项"大港油区大油气田勘探开发关键技术研究"(编号:2014E-06)

摘　　要：复杂断块油藏较常规油藏建模的工作量及难度要大,由于缺乏对建模难点对策的系统剖析与引导,导致地质模型精度较多难以达到开发需求,严重影响了对油藏开发调整的决策。针对复杂断块油藏的地质特点和建模难点,从油藏建模的边界确定、速度模型转换、断层模型、层面模型、相和属性模型算法及约束方法等方面对建模的技术难点进行了剖析,对模拟方法选择、变差函数设置、砂体连通关系有效控制及干层或特低渗层的处理等难题提出了相应的解决对策,并根据不同开发阶段提出了合理的网格精度划分要求,系统提出并总结了各成果模型的验证方法,全面较好地解决了建模过程中的一系列难题,从而有效提高模型精度,为从事油藏地质建模的技术人员提供较好的指导。The workload and difficulty of modeling complex fault block reservoir is greater than that of conventional reservoir.Due to the lack of systematic analysis and guidance to the countermeasures of difficulties in modeling,the precision of geological models is difficult to meet the development needs,which seriously affects the decision-making of reservoir development adjustment.In view of the geological characteristics and modeling difficulties of complex fault block reservoirs,the authors analyzed the technical difficulties of modeling from the following aspects:boundary determination of reservoir modeling,velocity model transformation,fault model,stratification model,algorithm and constraint method of phase and attribute model and so on.Corresponding countermeasures were put forward for the selection of simulation method,the setting of variation function,the effective control of sand body connectivity and the treatment of dry or ultra-low permeability layers.According to different stages of development,the reasonable requirements of grid accuracy were put forward,and the verification methods of each result model were put forward and summarized systematically.It solves a series of difficult problems in modeling process.Thus,the model accuracy can be improved effectively,and the technical personnel engaged in reservoir geological modeling will be provided with better guidance.

关 键 词：复杂断块 地质建模 技术难点 方法对策 模型精度 

分 类 号：TE132.1[石油与天然气工程—油气勘探]