多层拟三维模型层间处理算法研究  

A study of the disposal arithmetic between layers of the multi-layers pseudo-3D model

作　　者：戴涛[1] 岳光来[1] 杨耀忠[1] 周维四[1] 

机构地区：[1]中国石化胜利油田有限公司地质科学研究院

出　　处：《石油勘探与开发》2002年第2期113-116,共4页Petroleum Exploration and Development

基　　金：中国石化股份有限公司"九五"重点科技攻关项目P98030的一部分

摘　　要：多层二维二相数学模型的基本假设为,油藏中流体的流动以平面为主,纵向上的流动因影响小而被忽略,因此无法解决层间窜流问题。三维模型考虑的流体是立体的。多层拟三维考虑了纵向上的流动,在整体保留多层二维二相模型算法优势的前提下,在多层二维二相数学模型基础上,把连通层层间的流动量（即节点的垂向流入量、流出量）作为假象的源汇项加到二维二相方程中。在二维模型基础上,实现三维模型问题的近似考虑。给出了多层拟三维的改进数学模型,对层间连通性的改进算法进行了数学推导,使层间连通的多层油藏模拟计算结果更接近于实际油藏。研制的多层拟三维数值模拟软件比三维三相黑油模型的运算速度快,扩大了算法的适应范围,提高了模拟精度,达到了实用化程度。并通过了概念模型的测试,在模拟精度、算法功能等方面与Geoquest公司ECLIPSE数值模拟软件的黑油模型进行了对比,计算结果基本一致。对山东省胜利油区的大芦湖油田沙三中区块进行了油藏数值模拟,整体运行效率比黑油模型提高32.4％。参2（戴涛摘）The Multi-Layer 2D-2Phase Numerical Reservoir Simulation Model cannot solve the problem of cross-flow between layers. Considering the fluid as three-dimensional, the Multi-Layer Pseudo-3D Model, which is an improved method of the Multi-Layer 2D-2Phase, regards the cross-flow between layers as pseudo source remit item and adds it into the 2D-2Phase equation, to implement an approximate consideration of 3D reservoir. The method makes the simulation results close to the real reservoir which are connective between layers, and the software which is developed is faster than 3D-3Phase black oil model, and it enlarges the scope of the simulation software and improves the simulation precision. Contrasted with the black oil model, it has the same result and it is applied in the numerical reservoir simulation of Daluhu oil field, which is located in Dongying, Shandong, and improved 32.4% of the whole run efficiency than the black oil model.

关 键 词：多层拟三维模型 算法 研究 油藏 数据模拟 层间窜流 

分 类 号：TE319[石油与天然气工程—油气田开发工程]