{"title":"CFD simulation of cuttings transport in eccentric horizontal and inclined annulus","authors":"vivek deshmukh, Satish Kumar Dewangan","doi":"10.1615/multscientechn.2023048506","DOIUrl":null,"url":null,"abstract":"The present work deals with the cuttings transport in eccentric directional wellbore based on CFD simulation using ANSYS Fluent. Oil and gas industries have shifted to directional drilling for excessive oil exploration. Improper borehole cleaning leads to severe drilling problems that lead to permanent loss of the drilling site. The effect of wellbore inclination and eccentricity on cutting transport is investigated for the slurry inlet velocity, rotation of drillpipe and cuttings size. The considered flow is two-phase flow primary phase is CMC-bentonite solution and secondary phase is cuttings of different sizes. The Eulerian-Eulerian multiphase model has been implemented for flow through annulus along with RNG k-ε mixture turbulence model. The important findings related to effect of eccentricity and borehole inclination on cuttings transport has been explored for various drilling parameters.","PeriodicalId":34942,"journal":{"name":"Multiphase Science and Technology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Multiphase Science and Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1615/multscientechn.2023048506","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
The present work deals with the cuttings transport in eccentric directional wellbore based on CFD simulation using ANSYS Fluent. Oil and gas industries have shifted to directional drilling for excessive oil exploration. Improper borehole cleaning leads to severe drilling problems that lead to permanent loss of the drilling site. The effect of wellbore inclination and eccentricity on cutting transport is investigated for the slurry inlet velocity, rotation of drillpipe and cuttings size. The considered flow is two-phase flow primary phase is CMC-bentonite solution and secondary phase is cuttings of different sizes. The Eulerian-Eulerian multiphase model has been implemented for flow through annulus along with RNG k-ε mixture turbulence model. The important findings related to effect of eccentricity and borehole inclination on cuttings transport has been explored for various drilling parameters.
期刊介绍：
Two-phase flows commonly occur in nature and in a multitude of other settings. They are not only of academic interest but are found in a wide range of engineering applications, continuing to pose a challenge to many research scientists and industrial practitioners alike. Although many important advances have been made in the past, the efforts to understand fundamental behavior and mechanisms of two-phase flow are necessarily a continuing process. Volume 8 of Multiphase Science and Technology contains the text of the invited lectures given at the Third International Workshop on Two-Phase Flow Fundamentals sponsored by the Electric Power Research Institute (EPRI) and the U. S. Department of Energy (DOE).
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