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Keywords: plastic deformation
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1129
... oil & gas imbibition alagoz hydraulic fracturing clay content embedment shale sample reservoir characterization fracturing fluid shale surfactant proppant university texas proppant embedment shale-fluid interaction utica shale nmr result deformation plastic deformation shale...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1922
... layer rheological property cohesion 10 reservoir characterization penetration dynamic bottom soil sampling performed mechanical properties sediment penetration engineering inverse problem plastic deformation seafloor sediment upstream oil & gas bottom sediment simulation penetration...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1318
... elastic deformation to plastic deformation. This study uses elasticity and plasticity theories to analyze in different deformation stages. (i) Elastic deformation According to the classic Hertz s contact theory between a rigid sphere and an elastic semi-infinite half space, as discussed by Fischer-Cripps...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1927
..., respectively. holt amplitude stress change poroelastic parameter reservoir characterization shale plastic deformation skempton upstream oil & gas coefficient rock mechanics geomechanics symposium plastic strain constant mean stress condition reservoir geomechanics experiment strain...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2079
.... The larger slippage of fracture causes higher loads on casing and ultimately, the loads on casing reaches to a constant value because of the plastic deformation of casing. The elastic modulus of cement sheath has little effect on the loads of casing. But on the contrary, compressive strength of cement sheath...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2088
... of (2.7–10.3) in dry samples, to (1.1–5.9) on brine saturated samples, indicating a significant increase in plastic deformation under saturated conditions. Creep displacement also increases with saturation. 1. Introduction Creep can have a significant effect on fracture dimensions, annulus closure...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1576
... variable in the disturbance zone were also obtained for each quality of rock mass evaluated. In the disturbance zone, it is observed that the plastic deformations of the rock mass decrease with respect to the surface, presenting the greatest plastic deformations in the first meters of the surface, together...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0266
..., the elastic-plastic deformation model of self-propped fracture is established. Then, through the deformation model solution, the contact state of the fracture surface is analyzed, the deformation and stress of the fracture are calculated, and the model of fracture flow channel under different closure stresses...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-238
... ABSTRACT: Micro-annuli existing on the interface of cement-sheath might lead to the failure of wellbore integrity. Based on the solutions of the elastic and elastic-plastic deformations of a thick-walled cylinder with the internal and external pressures; meanwhile combining...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-324
... ABSTRACT: When external pressure is much higher than internal pressure on casing, the casing is subjected to collapse. In this paper, an analytical method is used to study the change of external loads on casing affected by the plastic deformation of formation rock and an elastoplastic...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0818
... significant cost reductions. The question is whether barrier-forming shale creep or plastic deformation can be stimulated if no barrier has been formed over the lifetime of the well. Recent laboratory experiments with core plugs from different field-shale facies as well as numerical simulations suggest...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0402
... hydraulic fracturing peak deviatoric stress deviatoric stress Upstream Oil & Gas normal stress MPa epoxy configuration sandstone sample rock sample geomechanical property shear stress mudstone sample reservoir geomechanics strength maximum shear stress plastic deformation shear strength...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-101
... boundary condition and conducted numerical analysis to investigate the effect of the far-field confining stress on the elasto-plastic deformation and potential development of the crack systems in both the loading and unloading phases during indentation. In normal indentation, the plastic deformation...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-270
... of the dissipation induced by breakage in front of that induced by plastic deformation when fragments produced by breakage have rougher surfaces with higher friction angles than the non broken particles; and reversely; (2) the increase of the dissipation induced by plastic deformation in front of that induced...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-279
... to the wellbore related to salt creep. For this purpose, a finite element model of a Pre-salt like synthetic wellbore is used. The evaluation scenario considers an elliptic borehole in which the casing remains uncovered by the cementation sheath. The emergence of plastic deformation in the casing is considered...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-482
... and eventually form an equally efficient sealing barrier. This paper discusses some geomechanical aspects of the shale barrier forming process, and describes an effort to study the process by a numerical simulation. Creep is implemented as time dependent plastic deformation. The annulus gap is rapidly reduced...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7037
... plastic deformation subsidence creep metals & mining strength moisture content heap reproduce constitutive model deformation dependence ARMA 14-7037 A Crushed Salt Model with Creep, Compaction and Strain Softening, and Application to Tailings Heaps Lüdeling, C. and Minkley, W. IfG...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-226
...-mechanical coupling effect on a claystone using a mechanical model coupled with a two-phase flow model formulated in the framework of Biot theory. A two dimensional simplified geometry is studied. Pore pressure evolution and plastic deformations evolution during gas injection in the different components...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-302
... prediction coefficient reservoir geomechanics Biot hydrostatic condition Proceeding plastic deformation deformation effective stress coefficient effective axial stress well logging pore pressure radial stress chalk uniaxial strain condition 1. INTRODUCTION Some of the chalk reservoirs...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-336
... Reservoir Characterization columnar ice confinement Schulson axial splitting strength residual strength terminal failure shear fault orientation Renshaw deformation frictional granular ice plastic deformation systematic experimental investigation strain rate 1. INTRODUCTION Using insight...

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