A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Numerical Study of High Pressure Injection in Unconsolidated Reservoirs
Numerous hydrocarbon-related injection operations are carried out in weakly-consolidated reservoirs. Strong flow-stress coupling, large non-linear deformations, and fracturing/opening are typical during these operations, specifically surrounding the injection wellbore. Geomechanical processes involved in high pressure injection in weakly-consolidated media are not well understood. The objective of this paper is to study the coupled behavior of these reservoirs at injection pressures below hydraulic fracturing, but sufficiently high to induce a zone of plastic deformations around the wellbore. A coupled, axisymmetric, poro-elasto-plastic, numerical model was developed in this study to simulate injection in unconsolidated formations. A detailed stress-strain-pore pressure evaluation was performed throughout the transient period of injection cycle, transient period of post-injection, and at steady state. Pressures were compared against the theoretical equation commonly applied at field and in analytical/numerical studies.
Numerical Study of High Pressure Injection in Unconsolidated Reservoirs
Numerous hydrocarbon-related injection operations are carried out in weakly-consolidated reservoirs. Strong flow-stress coupling, large non-linear deformations, and fracturing/opening are typical during these operations, specifically surrounding the injection wellbore. Geomechanical processes involved in high pressure injection in weakly-consolidated media are not well understood. The objective of this paper is to study the coupled behavior of these reservoirs at injection pressures below hydraulic fracturing, but sufficiently high to induce a zone of plastic deformations around the wellbore. A coupled, axisymmetric, poro-elasto-plastic, numerical model was developed in this study to simulate injection in unconsolidated formations. A detailed stress-strain-pore pressure evaluation was performed throughout the transient period of injection cycle, transient period of post-injection, and at steady state. Pressures were compared against the theoretical equation commonly applied at field and in analytical/numerical studies.
Numerical Study of High Pressure Injection in Unconsolidated Reservoirs
Atefi Monfared, Kamelia (author) / Rothenburg, Leo (author)
Geo-Shanghai 2014 ; 2014 ; Shanghai, China
Soil Behavior and Geomechanics ; 668-677
2014-05-05
Conference paper
Electronic Resource
English
Numerical Study of High Pressure Injection in Unconsolidated Reservoirs
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