Performance evaluation of newly developed true triaxial stress loading and pore pressure applying system to simulate the reservoir depletion and injection

Hadi Atapour, Ali Mortazavi

Research output: Contribution to journalArticle

Abstract

A new true triaxial stress loading and pore pressure applying apparatus (TTSL-PPAA) has been designed and fabricated for testing relatively large rock specimens under high-stress levels and pore fluid pressures. The system has the capability of simultaneously monitoring the stresses and strains in three principal stress directions, applied pore pressures, and flow rate of depletion and injection fluids. The apparatus is specially designed to simulate depletion/ injection processes of the reservoir under TTSL and uniaxial strain or constant stress boundary conditions. The depletion/injection simulations are being used to study the in situ stress changes and consequently reservoir compaction induced by fluid production and injection. Knowledge of in situ stress variations with reservoir pore pressure depletion and injection is important in a multidisciplinary approach for accurate reservoir characterization, optimal reservoir management, and enhanced oil recovery projects. In addition to depletion/injection tests, the developed system has the potential to be used in different geomechanical investigations such as stress–strain experiments, permeability assessment, wellbore stability studies, hydraulic fracturing simulations, and sand production tests. The TTSL-PPAA permits mechanical testing of rock specimens of up to 30 cm in size and hydro-mechanical testing at the presence of high pore pressure on specimens of up to 15 cm in dimension. The reliability and effectiveness of the newly developed apparatus were checked by different testing programs and numerical modeling. This manuscript describes the design, development, performance evaluation and preliminary use of the developed TTSL apparatus for petroleum related geomechanics investigations, especially for the depletion/injection simulations.

Original languageEnglish
Article numberGTJ20180161
JournalGeotechnical Testing Journal
Volume43
Issue number3
DOIs
Publication statusPublished - May 1 2020
Externally publishedYes

Fingerprint

Pore pressure
pore pressure
in situ stress
Mechanical testing
simulation
Fluids
fluid injection
geomechanics
enhanced oil recovery
stress change
reservoir characterization
Rocks
fluid pressure
Geomechanics
Reservoir management
rock
Hydraulic fracturing
Petroleum reservoirs
evaluation
compaction

Keywords

  • Depletion and injection test
  • Hydraulic fracturing
  • Reservoir geomechanics
  • True triaxial stress loading and pore pressure applying apparatus

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

@article{4925a4698d994123a9722204d0cc2fa5,
title = "Performance evaluation of newly developed true triaxial stress loading and pore pressure applying system to simulate the reservoir depletion and injection",
abstract = "A new true triaxial stress loading and pore pressure applying apparatus (TTSL-PPAA) has been designed and fabricated for testing relatively large rock specimens under high-stress levels and pore fluid pressures. The system has the capability of simultaneously monitoring the stresses and strains in three principal stress directions, applied pore pressures, and flow rate of depletion and injection fluids. The apparatus is specially designed to simulate depletion/ injection processes of the reservoir under TTSL and uniaxial strain or constant stress boundary conditions. The depletion/injection simulations are being used to study the in situ stress changes and consequently reservoir compaction induced by fluid production and injection. Knowledge of in situ stress variations with reservoir pore pressure depletion and injection is important in a multidisciplinary approach for accurate reservoir characterization, optimal reservoir management, and enhanced oil recovery projects. In addition to depletion/injection tests, the developed system has the potential to be used in different geomechanical investigations such as stress–strain experiments, permeability assessment, wellbore stability studies, hydraulic fracturing simulations, and sand production tests. The TTSL-PPAA permits mechanical testing of rock specimens of up to 30 cm in size and hydro-mechanical testing at the presence of high pore pressure on specimens of up to 15 cm in dimension. The reliability and effectiveness of the newly developed apparatus were checked by different testing programs and numerical modeling. This manuscript describes the design, development, performance evaluation and preliminary use of the developed TTSL apparatus for petroleum related geomechanics investigations, especially for the depletion/injection simulations.",
keywords = "Depletion and injection test, Hydraulic fracturing, Reservoir geomechanics, True triaxial stress loading and pore pressure applying apparatus",
author = "Hadi Atapour and Ali Mortazavi",
year = "2020",
month = "5",
day = "1",
doi = "10.1520/GTJ20180161",
language = "English",
volume = "43",
journal = "Geotechnical Testing Journal",
issn = "0149-6115",
publisher = "American Society for Testing and Materials",
number = "3",

}

TY - JOUR

T1 - Performance evaluation of newly developed true triaxial stress loading and pore pressure applying system to simulate the reservoir depletion and injection

AU - Atapour, Hadi

AU - Mortazavi, Ali

PY - 2020/5/1

Y1 - 2020/5/1

N2 - A new true triaxial stress loading and pore pressure applying apparatus (TTSL-PPAA) has been designed and fabricated for testing relatively large rock specimens under high-stress levels and pore fluid pressures. The system has the capability of simultaneously monitoring the stresses and strains in three principal stress directions, applied pore pressures, and flow rate of depletion and injection fluids. The apparatus is specially designed to simulate depletion/ injection processes of the reservoir under TTSL and uniaxial strain or constant stress boundary conditions. The depletion/injection simulations are being used to study the in situ stress changes and consequently reservoir compaction induced by fluid production and injection. Knowledge of in situ stress variations with reservoir pore pressure depletion and injection is important in a multidisciplinary approach for accurate reservoir characterization, optimal reservoir management, and enhanced oil recovery projects. In addition to depletion/injection tests, the developed system has the potential to be used in different geomechanical investigations such as stress–strain experiments, permeability assessment, wellbore stability studies, hydraulic fracturing simulations, and sand production tests. The TTSL-PPAA permits mechanical testing of rock specimens of up to 30 cm in size and hydro-mechanical testing at the presence of high pore pressure on specimens of up to 15 cm in dimension. The reliability and effectiveness of the newly developed apparatus were checked by different testing programs and numerical modeling. This manuscript describes the design, development, performance evaluation and preliminary use of the developed TTSL apparatus for petroleum related geomechanics investigations, especially for the depletion/injection simulations.

AB - A new true triaxial stress loading and pore pressure applying apparatus (TTSL-PPAA) has been designed and fabricated for testing relatively large rock specimens under high-stress levels and pore fluid pressures. The system has the capability of simultaneously monitoring the stresses and strains in three principal stress directions, applied pore pressures, and flow rate of depletion and injection fluids. The apparatus is specially designed to simulate depletion/ injection processes of the reservoir under TTSL and uniaxial strain or constant stress boundary conditions. The depletion/injection simulations are being used to study the in situ stress changes and consequently reservoir compaction induced by fluid production and injection. Knowledge of in situ stress variations with reservoir pore pressure depletion and injection is important in a multidisciplinary approach for accurate reservoir characterization, optimal reservoir management, and enhanced oil recovery projects. In addition to depletion/injection tests, the developed system has the potential to be used in different geomechanical investigations such as stress–strain experiments, permeability assessment, wellbore stability studies, hydraulic fracturing simulations, and sand production tests. The TTSL-PPAA permits mechanical testing of rock specimens of up to 30 cm in size and hydro-mechanical testing at the presence of high pore pressure on specimens of up to 15 cm in dimension. The reliability and effectiveness of the newly developed apparatus were checked by different testing programs and numerical modeling. This manuscript describes the design, development, performance evaluation and preliminary use of the developed TTSL apparatus for petroleum related geomechanics investigations, especially for the depletion/injection simulations.

KW - Depletion and injection test

KW - Hydraulic fracturing

KW - Reservoir geomechanics

KW - True triaxial stress loading and pore pressure applying apparatus

UR - http://www.scopus.com/inward/record.url?scp=85067369355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067369355&partnerID=8YFLogxK

U2 - 10.1520/GTJ20180161

DO - 10.1520/GTJ20180161

M3 - Article

VL - 43

JO - Geotechnical Testing Journal

JF - Geotechnical Testing Journal

SN - 0149-6115

IS - 3

M1 - GTJ20180161

ER -