Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling

Gomez, Steven P.; Sobolik, Steve R.; Matteo, Edward N.; Reda Taha, Mahmoud; Stormont, John C.

doi:10.1016/j.compgeo.2016.10.001

Title: Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling

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Abstract

This research aims to describe the microannulus region of the cement sheath-steel casing interface in terms of its compressibility and permeability. Here, a wellbore system mock-up was used for lab-scale testing, and was subjected to confining and casing pressures in a pressure vessel while measuring gas flow along the specimen’s axis. The flow was interpreted as the hydraulic aperture of the microannuli. Numerical joint models were used to calculate stress and displacement conditions of the microannulus region, where the mechanical stiffness and hydraulic aperture were altered in response to the imposed stress state and displacement across the joint interface.

Authors:

Gomez, Steven P. ^[1]; Sobolik, Steve R. ^[2]; Matteo, Edward N. ^[2]; Reda Taha, Mahmoud ^[3]; Stormont, John C. ^[3]

Univ. of New Mexico, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Univ. of New Mexico, Albuquerque, NM (United States)

Publication Date:: Wed Nov 16 00:00:00 EST 2016

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE Office of Fossil Energy (FE); USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1340517

Alternate Identifier(s):: OSTI ID: 1410722

Report Number(s):: SAND-2016-9890J
Journal ID: ISSN 0266-352X; PII: S0266352X16302300

Grant/Contract Number:: AC04-94AL85000; DEFE0009562; SAND2016-4456J

Resource Type:: Accepted Manuscript

Journal Name:: Computers and Geotechnics

Additional Journal Information:: Journal Volume: 83; Journal Issue: C; Journal ID: ISSN 0266-352X

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 58 GEOSCIENCES; wellbore; microannulus; numerical model; CO2 sequestration; fracture; joint model

Citation Formats


                    Gomez, Steven P., Sobolik, Steve R., Matteo, Edward N., Reda Taha, Mahmoud, and Stormont, John C. Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling.  United States: N. p., 2016. 
Web.  doi:10.1016/j.compgeo.2016.10.001.

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                    Gomez, Steven P., Sobolik, Steve R., Matteo, Edward N., Reda Taha, Mahmoud, & Stormont, John C. Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling.  United States.  https://doi.org/10.1016/j.compgeo.2016.10.001

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                    Gomez, Steven P., Sobolik, Steve R., Matteo, Edward N., Reda Taha, Mahmoud, and Stormont, John C. Wed .  
"Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling".  United States.  https://doi.org/10.1016/j.compgeo.2016.10.001.  https://www.osti.gov/servlets/purl/1340517.

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@article{osti_1340517,

  title        = {Investigation of wellbore microannulus permeability under stress via experimental wellbore mock-up and finite element modeling},

  author       = {Gomez, Steven P. and Sobolik, Steve R. and Matteo, Edward N. and Reda Taha, Mahmoud and Stormont, John C.},

  abstractNote = {This research aims to describe the microannulus region of the cement sheath-steel casing interface in terms of its compressibility and permeability. Here, a wellbore system mock-up was used for lab-scale testing, and was subjected to confining and casing pressures in a pressure vessel while measuring gas flow along the specimen’s axis. The flow was interpreted as the hydraulic aperture of the microannuli. Numerical joint models were used to calculate stress and displacement conditions of the microannulus region, where the mechanical stiffness and hydraulic aperture were altered in response to the imposed stress state and displacement across the joint interface.},

  doi          = {10.1016/j.compgeo.2016.10.001},

  journal      = {Computers and Geotechnics},

  number       = C,

  volume       = 83,

  place        = {United States},

  year         = {Wed Nov 16 00:00:00 EST 2016},

  month        = {Wed Nov 16 00:00:00 EST 2016}

}

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