Mechanics of pore collapse and compaction in weak porous rocks

A. Abdulraheem; J. C. Roegiers; M. Zaman

Mechanics of pore collapse and compaction in weak porous rocks

A. Abdulraheem
, J. C. Roegiers
, M. Zaman

Research output: Contribution to conference › Paper › peer-review

6 Scopus citations

Abstract

The term "pore collapse" is used to describe a drastic, irreversible reduction in porosity due to the increase in effective stress on the rock matrix as a consequence of withdrawal of oil and gas. This paper describes an elastoplastic constitutive model that incorporates the phenomenon of pore collapse, and its numerical implementation in a nonlinear finite element (FE) code. Preliminary evaluation of results from the FE simulation indicate that the uniaxial strain conditions, which are predominant in producing reservoir rock strata, can be idealized fairly well by the constitutive model and the numerical simulator. Application of this numerical simulator to a compacting reservoir is cuirendy being pursued and the results will be presented in the future.

Original language	English
Pages	233-242
Number of pages	10
State	Published - 1992
Externally published	Yes
Event	33rd U.S. Symposium on Rock Mechanics, USRMS 1992 - Santa Fe, United States Duration: 3 Jun 1992 → 5 Jun 1992

Conference

Conference	33rd U.S. Symposium on Rock Mechanics, USRMS 1992
Country/Territory	United States
City	Santa Fe
Period	3/06/92 → 5/06/92

Bibliographical note

Publisher Copyright:
© 33rd U.S. Symposium on Rock Mechanics, USRMS 1992.

ASJC Scopus subject areas

Geology
Geophysics
Geotechnical Engineering and Engineering Geology

Cite this

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title = "Mechanics of pore collapse and compaction in weak porous rocks",

abstract = "The term {"}pore collapse{"} is used to describe a drastic, irreversible reduction in porosity due to the increase in effective stress on the rock matrix as a consequence of withdrawal of oil and gas. This paper describes an elastoplastic constitutive model that incorporates the phenomenon of pore collapse, and its numerical implementation in a nonlinear finite element (FE) code. Preliminary evaluation of results from the FE simulation indicate that the uniaxial strain conditions, which are predominant in producing reservoir rock strata, can be idealized fairly well by the constitutive model and the numerical simulator. Application of this numerical simulator to a compacting reservoir is cuirendy being pursued and the results will be presented in the future.",

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pages = "233--242",

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TY - CONF

T1 - Mechanics of pore collapse and compaction in weak porous rocks

AU - Abdulraheem, A.

AU - Roegiers, J. C.

AU - Zaman, M.

PY - 1992

Y1 - 1992

N2 - The term "pore collapse" is used to describe a drastic, irreversible reduction in porosity due to the increase in effective stress on the rock matrix as a consequence of withdrawal of oil and gas. This paper describes an elastoplastic constitutive model that incorporates the phenomenon of pore collapse, and its numerical implementation in a nonlinear finite element (FE) code. Preliminary evaluation of results from the FE simulation indicate that the uniaxial strain conditions, which are predominant in producing reservoir rock strata, can be idealized fairly well by the constitutive model and the numerical simulator. Application of this numerical simulator to a compacting reservoir is cuirendy being pursued and the results will be presented in the future.

AB - The term "pore collapse" is used to describe a drastic, irreversible reduction in porosity due to the increase in effective stress on the rock matrix as a consequence of withdrawal of oil and gas. This paper describes an elastoplastic constitutive model that incorporates the phenomenon of pore collapse, and its numerical implementation in a nonlinear finite element (FE) code. Preliminary evaluation of results from the FE simulation indicate that the uniaxial strain conditions, which are predominant in producing reservoir rock strata, can be idealized fairly well by the constitutive model and the numerical simulator. Application of this numerical simulator to a compacting reservoir is cuirendy being pursued and the results will be presented in the future.

UR - https://www.scopus.com/pages/publications/85058659873

M3 - Paper

AN - SCOPUS:85058659873

SP - 233

EP - 242

T2 - 33rd U.S. Symposium on Rock Mechanics, USRMS 1992

Y2 - 3 June 1992 through 5 June 1992

ER -

Mechanics of pore collapse and compaction in weak porous rocks

Abstract

Conference

Bibliographical note

ASJC Scopus subject areas

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Cite this