{"title":"Recovery and Sweep Efficiency in a Cross-Sectional Problem of Immiscible Displacement with Gravity Override and Capillary Imbibition","authors":"Anna Chernova, Andrey Afanasyev","doi":"10.1007/s11242-024-02119-3","DOIUrl":null,"url":null,"abstract":"<div><p>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.</p></div>","PeriodicalId":804,"journal":{"name":"Transport in Porous Media","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transport in Porous Media","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11242-024-02119-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
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.
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).