Investigation of geomechanical responses of reservoirs induced by carbon dioxide storage

Eshiet, Kenneth Imo‐Imo; Sheng, Yong

doi:10.1007/s12665-013-2784-2

Cited by 18 publications

(18 citation statements)

References 64 publications

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“…The given pressure denotes a given peak level occurring as a result of uncontrolled build-up at the vicinity of injection. The maximum allowable pressure in reservoirs has been shown to attain magnitudes commensurate to 40 MPa, over protracted periods [30,33]. Likewise, reservoir pressure build-up reaching 33 and 25 MPa is demonstrated in Xu et al [94] and Rutqvist et al [74], respectively.…”

Section: Boundary Conditions and Loadingmentioning

confidence: 98%

“…Details of the fluid flow model are presented in Eshiet and Sheng [30]. In summary, it comprises a network of interconnecting domains used to represent voids between particles.…”

Section: Smooth Joint Contact Model and Fluid Flow Algorithmmentioning

confidence: 99%

“…where w is the width of the channel, a is the aperture between contacting particles, DP is the pressure difference between a pair of connecting domains, l is the fluid dynamic viscosity, and L p is the channel length. Further definitions of a and L p are given in Eshiet and Sheng [30]. Hydromechanical coupling is implemented through the fluid pressure via Eq.…”

Section: Smooth Joint Contact Model and Fluid Flow Algorithmmentioning

confidence: 99%

“…At excessively high pressures, rock failure manifests in forms such as extensive deformations, sliding, reactivation of preexisting faults and fracturing. Formation rock failure is dependent on several factors including material properties, in situ stresses and well-operating conditions [30]. The main fluid properties are presented in Table 4.…”

Section: Boundary Conditions and Loadingmentioning

confidence: 99%

“…The peculiarity of the numerical approach in this study lies in the combination of the fluid flow scheme and hydromechanical coupling illustrated in Eshiet and Sheng [30] with a smooth joint model (SJM) that has been specifically calibrated to represent an unbonded rock joint as described in Barton [7,8] and Barton and Choubey [10]. The SJM in this study is formulated to resemble a shear joint formed as a result of tectonic movements.…”

Section: Introductionmentioning

confidence: 99%

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The role of rock joint frictional strength in the containment of fracture propagation

Eshiet

Sheng

2016

Acta Geotech.

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The fracturing phenomenon within the reservoir environment is a complex process that is controlled by several factors and may occur either naturally or by artificial drivers. Even when deliberately induced, the fracturing behaviour is greatly influenced by the subsurface architecture and existing features. The presence of discontinuities such as joints, artificial and naturally occurring faults and interfaces between rock layers and microfractures plays an important role in the fracturing process and has been known to significantly alter the course of fracture growth. In this paper, an important property (joint friction) that governs the shear behaviour of discontinuities is considered. The applied numerical procedure entails the implementation of the discrete element method to enable a more dynamic monitoring of the fracturing process, where the joint frictional property is considered in isolation. Whereas fracture propagation is constrained by joints of low frictional resistance, in nonfrictional joints, the unrestricted sliding of the joint plane increases the tendency for reinitiation and proliferation of fractures at other locations. The ability of a frictional joint to suppress fracture growth decreases as the frictional resistance increases; however, this phenomenon exacerbates the influence of other factors including in situ stresses and overburden conditions. The effect of the joint frictional property is not limited to the strength of rock formations; it also impacts on fracturing processes, which could be particularly evident in jointed rock masses or formations with prominent faults and/or discontinuities.

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Section: Boundary Conditions and Loadingmentioning

confidence: 98%

“…Details of the fluid flow model are presented in Eshiet and Sheng [30]. In summary, it comprises a network of interconnecting domains used to represent voids between particles.…”

Section: Smooth Joint Contact Model and Fluid Flow Algorithmmentioning

confidence: 99%

Section: Smooth Joint Contact Model and Fluid Flow Algorithmmentioning

confidence: 99%

Section: Boundary Conditions and Loadingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The role of rock joint frictional strength in the containment of fracture propagation

Eshiet

Sheng

2016

Acta Geotech.

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Evaluating the corollary of the interdependency of rock joint properties on subsurface fracturing

Eshiet

Sheng

Yang

2020

Bull Eng Geol Environ

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The characteristics of structural discontinuities in the subsurface environment often play a key role in the overall behaviour of such systems and their response to externally imposed conditions. Rock joints are one of such features that constitute the heterogeneity of rock masses. Akin to other forms of discontinuities, the characteristics of rock joints affect the performance of their parent rock masses, which are constituents of rock formations. The fracturing process is one of such key geomechanical phenomena that is inevitably influenced by pre-existing joints. A numerical technique implemented via a discrete element method (DEM) is herein adopted to evaluate two fundamental properties that control the shear and dilatancy responses of discontinuities. Though these properties are also assessed in isolation, their inter-dependency, which is a dominant factor, is investigated.As joint frictional resistance increases, it escalates the potential of the joint to attenuate the rate of fracture growth. On the other hand, an increase in joint dilatancy increases the intensity of fracturing. The impact of joint frictional resistance is more pronounced at high friction magnitudes and in this range the predominant influence of joint friction overwhelms any effect of joint dilatancy. Contrarily, at low joint frictional resistance, contributions from even a small magnitude of joint dilatancy increases the degree of fracturing. The inter-relationship between joint friction and dilatancy has influencing implications that govern the performance of rock masses. An inquiry into their combined contributions provides information prerequisite for a more accurate estimation and appraisal of fracture behaviour in underground systems.

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Mitigating climate change via CO2 sequestration into Biyadh reservoir: geomechanical modeling and caprock integrity

Khan

Khulief

Al-Shuhail

2018

Mitig Adapt Strateg Glob Change

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Investigation of geomechanical responses of reservoirs induced by carbon dioxide storage

Cited by 18 publications

References 64 publications

The role of rock joint frictional strength in the containment of fracture propagation

The role of rock joint frictional strength in the containment of fracture propagation

Evaluating the corollary of the interdependency of rock joint properties on subsurface fracturing

Mitigating climate change via CO2 sequestration into Biyadh reservoir: geomechanical modeling and caprock integrity

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