Recovery and Sweep Efficiency in a Cross-Sectional Problem of Immiscible Displacement with Gravity Override and Capillary Imbibition

IF 2.7 3区 工程技术 Q3 ENGINEERING, CHEMICAL
Anna Chernova, Andrey Afanasyev
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Abstract

We consider a cross-sectional study of immiscible displacement under the influence of gravity, anisotropic permeability, and capillary effects. We propose the similarity criteria characterizing the relative role of these effects and qualitatively different flows. We present a classification of the flow regimes in four limiting cases of the displacement. The recovery and sweep efficiencies in such cases can be compromised by the gravity override, channeling, and coning effects. In the phase plane, we constrain the parameter ranges at which these effects become relevant. We then aim at evaluating the range of the similarity criteria characterized by the maximum efficiencies and describe the placements of horizontal wells allowing to reach these maxima. We show that the placement of the producing well is generally more relevant. In the limiting cases, the variety of placements can be merged in groups by their efficiencies. We eventually come up with the maps of the maximal efficiencies and associated placements allowing for a quick assessment of the optimal injection scenarios. The proposed classification of the flow regimes and the calculated maps can be useful in evaluating various scenarios of waterflooding and gas injection.

Abstract Image

带有重力覆盖和毛细管浸润的不相溶置换横截面问题中的回收和扫频效率
我们考虑了在重力、各向异性渗透性和毛细管效应影响下的不相溶位移横截面研究。我们提出了描述这些效应的相对作用和不同流动性质的相似性标准。我们对四种极限位移情况下的流动机制进行了分类。在这些情况下,恢复和扫描效率可能会受到重力覆盖、通道和锥形效应的影响。在相位平面上,我们限制了这些效应相关的参数范围。然后,我们旨在评估以最大效率为特征的相似性标准范围,并描述能够达到这些最大值的水平井位置。我们的研究表明,生产井的位置通常更具相关性。在有限的情况下,可以根据效率将各种布局合并为一组。最终,我们绘制出了最大效率图和相关位置图,以便快速评估最佳注水方案。所提出的流态分类和计算出的地图可用于评估各种注水和注气方案。
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来源期刊
Transport in Porous Media
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).
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