Approximate Analytical Solutions for 1-D Immiscible Water Alternated Gas

IF 2.7 3区工程技术 Q3 ENGINEERING, CHEMICAL

Transport in Porous Media Pub Date : 2023-11-29 DOI:10.1007/s11242-023-02037-w

Adolfo P. Pires, Wagner Q. Barros, Alvaro M. M. Peres

引用次数: 0

Abstract

Water Alternated Gas (WAG) flooding is largely used as an Enhanced Oil Recovery (EOR) method in oil fields. It is based on the high sweep efficiency of the water phase and the high displacement efficiency of the gas phase. Additionally, other components may be dissolved in both displacing phases, increasing the oil recovery factor and leading to modern WAG schemes such as PWAG (Polymer WAG), MWAG (Miscible WAG), and others. In this paper, we present approximate analytical solutions for the linear immiscible Water Alternated Gas problem. The mathematical model is composed by a 2×2 system of nonlinear hyperbolic Partial Differential Equations (PDE), solved by the Method of Characteristics (MOC) for a set of reservoir properties. The analytical solution is compared with numerical simulation showing the accuracy and robustness of the method under different WAG configurations. The presented solutions can be used to select the best recovery technique for a particular field in a fast and efficient way.

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一维非混相水交替气的近似解析解

水气交替驱(WAG)作为一种提高采收率(EOR)的方法在油田中得到了广泛的应用。它是基于水相的高波及效率和气相的高驱替效率。此外，其他组分可能溶解在两种驱油相中，提高了采收率，并导致了现代WAG方案，如PWAG(聚合物WAG)、MWAG(混相WAG)等。本文给出了线性非混相水-气交替问题的近似解析解。数学模型由2×2非线性双曲型偏微分方程(PDE)系统组成，用特征化法(MOC)求解一组储层物性。将解析解与数值模拟结果进行了比较，结果表明了该方法在不同WAG结构下的准确性和鲁棒性。所提出的解决方案可用于快速有效地选择特定油田的最佳采油技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transport in Porous Media 工程技术-工程：化工

CiteScore

5.30

自引率

7.40%

发文量

155

审稿时长

4.2 months

期刊介绍： -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).