Chemo-Thermo-Poromechanical Wellbore Stability Modelling Using Multi-Component Drilling Fluids

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This project intends to develop an improved wellbore stability model based on poromechanics and non-equilibrium thermodynamics which describes the physico-chemical interactions between a multi-component drilling fluid and a reactive shale formation. Through finite element modelling, this model can be employed in wellbore stability studies in order to optimise drilling fluid formulation and mud weight selection. Specifically, we present the results of finite-element-finite colume based analysis of thermal and solute diffusion associated with wellbore heating and cooling effect on the reservoir system by drilling fluid over a period of time. Then, we solve the heat driven solute diffusion equation with thermal osmosis and solute diffusion coefficients.

This preliminary investigation indicates a gradual but steady increase in temperature in the near wellbore region during during heat energy disspation from the far-field region. A reverse process was observed during the cooling process with both indicating a constant solute mass fraction over the time limit.
Copyright 2017, Society of Petroleum Engineers
Original languageEnglish
Title of host publicationProceedings 2017 SPE Kuwait Oil & Gas Show and Conference
PublisherSociety of Petroleum Engineers (SPE)
Pages1-14
Number of pages14
ISBN (Print)9781613995341
DOIs
Publication statusPublished - 23 Oct 2017
EventSPE Kuwait Oil & Gas Show and Conference - Kuwait City, Kuwait
Duration: 15 Oct 201718 Oct 2017

Conference

ConferenceSPE Kuwait Oil & Gas Show and Conference
CountryKuwait
CityKuwait City
Period15/10/1718/10/17

Keywords

  • Drilling
  • Finite element
  • Wellbore stability
  • Shale
  • Unconventional

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