Poromechanical response of fractured-porous rock masses

Mao Bai, Jean Claude Roegiers, Derek Elsworth

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

An analytical model based on a poromechanical formulation for dual-porosity media is presented. In comparison with traditional conceptualizations such as by Barenblatt et al. (1960), the proposed model contains both additional terms in the governing flow equations to provide a physically more realistic description of the change in storage, and a natural accommodation of body displacements. Solution is developed for radial flow in a reservoir subject to the conditions of both constant bottom hole pressure and constant flow rate using Hankel transforms. The poromechanical effect, resulting from the coupling between fluid flow and solid deformation, is significant in the well vicinity where the modifications of initial pressure and stress state are substantial. Different from the conventional approach in which the impact of fluid properties is generally emphasized, the presented case studies highlight the critical influence of mechanical properties of the fractured rock mass on the change of fluid pressure in a producing reservoir. The study indicates that dual-porosity behavior is most obvious only when the poromechanical properties fall within a certain range.

Original languageEnglish (US)
Pages (from-to)155-168
Number of pages14
JournalJournal of Petroleum Science and Engineering
Volume13
Issue number3-4
DOIs
StatePublished - Jan 1 1995

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dual porosity
Porosity
Rocks
Bottom hole pressure
Radial flow
radial flow
Fluids
fluid pressure
rock
fluid flow
Flow of fluids
Analytical models
mechanical property
transform
Flow rate
Mechanical properties
fluid
rate
effect
comparison

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology

Cite this

Bai, Mao ; Roegiers, Jean Claude ; Elsworth, Derek. / Poromechanical response of fractured-porous rock masses. In: Journal of Petroleum Science and Engineering. 1995 ; Vol. 13, No. 3-4. pp. 155-168.
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Poromechanical response of fractured-porous rock masses. / Bai, Mao; Roegiers, Jean Claude; Elsworth, Derek.

In: Journal of Petroleum Science and Engineering, Vol. 13, No. 3-4, 01.01.1995, p. 155-168.

Research output: Contribution to journalArticle

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