偏心水平和倾斜环空岩屑运移的CFD模拟

Q3 Engineering

Multiphase Science and Technology Pub Date : 2023-01-01 DOI:10.1615/multscientechn.2023048506

vivek deshmukh, Satish Kumar Dewangan

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引用次数: 0

摘要

本文利用ANSYS Fluent软件对偏心定向井筒中岩屑运移进行了CFD模拟。石油和天然气行业已经转向定向钻井，以过度勘探石油。钻孔清洗不当会导致严重的钻井问题，从而导致钻井场地的永久损失。研究了井筒倾角和偏心对泥浆入口速度、钻杆旋转和岩屑尺寸的影响。考虑的流体为两相流动，一次相为cmc -膨润土溶液，二次相为不同粒径的岩屑。采用欧拉-欧拉多相模型和RNG k-ε混合湍流模型对环空流动进行了求解。探讨了不同钻井参数下偏心率和井斜对岩屑运移影响的重要发现。

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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CFD simulation of cuttings transport in eccentric horizontal and inclined annulus

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.

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来源期刊

Multiphase Science and Technology Engineering-Engineering (all)

CiteScore

0.80

自引率

0.00%

发文量

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).