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Keywords: wellbore stability
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0426
...-dependent rheology of gelled fluid. The hydraulic model is then coupled with a wellbore stability model to study the effect of dynamic pressures on wellbore integrity. The method of characteristics is employed to solve the governing equations of the hydraulic model. Failure analysis is performed to evaluate...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0477
... fluid density, fracture permeability, number of fractures and drilling fluid immersion time on the wellbore stability. The results show that: (1) increasing density is beneficial to improve the wellbore stability at the early stage; (2) with the increase of the fracture permeability, the wellbore state...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0042
... the plugging property has great influence on the wellbore stability. The research achievements are helpful to guide similar strata to improve wellbore instability. 1. INTRODUCTION As global energy consumption continues to increase, achieving efficient development of deep and ultra-deep resources has become...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0843
... ABSTRACT: Clarifying the mechanism of wellbore stability in broken formations is crucial due to the discontinuous deformation and stress characteristics of such rocks. Conventional continuum-based rock mechanics methods need to be improved for these formations. The discrete element method (DEM...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0097
... the rock formation. Wellbore stability must be maintained during both wellbore drilling and the well construction phase to support the structural integrity an oil and gas well. In the wellbore drilling, the rock mass inside the circular borehole is relaxed progressively and removed eventually, which...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1166
... that are likely limited in producible fluids. Among the other challenges associated with in-situ HPHT environments, the injection of lower-temperature water imposes further complexity on the stress conditions due to dynamic thermomechanical interactions. Understanding its influence on wellbore stability...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0333
... the collapse, leakage and rupture pressure of discontinuous conglomerate formation with strong heterogeneity and random distribution of gravel. Therefore, in order to improve the drilling wellbore stability in conglomerate formations, it is necessary to propose a new method to accurately predict the pre...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0598
... progress and increasing the cost of the drilling operation. Conventional wellbore stability prediction relies on some deterministic physical models, involving some empirical coefficients which are difficult to determine and often dependent on field experience. In addition, some complex factors...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0050
..., and failure criteria (Zhao et al., 2012; Mansourizadeh et al., 2016; Liu et al., 2021; Li et al., 2019; Zhang et al., 2020; Li et al., 2022; Aslannezhad et al., 2021). Both theoretical and field data have indicated that an appropriate increase in mud weight does benefit wellbore stability in continuous media...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0886
... ABSTRACT Wellbore stability is often affected by the randomness and ambiguity of geomechanical parameters. Finding an effective method to analyze the borehole instability subjected to uncertainties can help improve the borehole collapse and drilling-induced tensile fracture prediction...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0122
... ABSTRACT Shale rock is typically anisotropic in both elasticity and strength, but traditional wellbore stability models generally assume that shale rock is isotropic or partially anisotropic, and the influence of hydraulic-mechanical coupling is usually ignored, so the effect of arbitrary...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0125
... geological subdiscipline mechanical parameter reservoir section borehole coefficient drilling fluid mudstone collapse pressure invasion time drilling fluid invasion time drilling fluid chemistry wellbore stability drilling fluid intrusion mudstone section engineering rock mechanical parameter...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0068
... ABSTRACT: Rock salt, mainly comprised of NaCl, exhibits inherent softness and has a good rheology property, resulting in complex creep patterns and fracture evolution for wellbore stability. They are, even coming from underground, facing weathering and dissolution & precipitation process...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0190
...) coupling effect and coal shrinkage induced by methane desorption that happened in the underbalanced condition. However, most previous studies ignored the influence of T-H-M coupling and coal shrinkage on wellbore stability. Therefore, a fully coupled T-H-M model with local thermal equilibrium condition...

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