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Keywords: collapse pressure
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2128
... and triaxial rock mechanics tests were conducted to determine the mechanical properties of the rock. The influences of heat transfer between the wellbore and the formation, mechanical properties, in-situ stresses, collapse pressure, and fracture pressure are investigated. Wellbore temperature change induced...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0126
... ABSTRACT: Special rock mechanical characteristics of natural gas hydrate (NGH) sediments lead to the inapplicability of traditional well stability models. In this paper, a new model to calculate the collapse pressure and fracture pressure of a borehole in NGH formation is studied based...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0049
... prediction sonic transit time reservoir geomechanics pore pressure analysis shale pore pressure prediction wellbore integrity collapse pressure pore pressure shale fracture gradient subsalt well optimized pore pressure pore pressure prediction gradient Drilling 1. INTRODUCTION Pore pressure...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-846
... on these MMDs are also analyzed. The study shows some MMDs are related to the fracture pressure, namely the upper limit of MWW; while other MMDs are dependent on the collapse pressure, namely the lower limit of MWW. The minimum of these MMDs can be taken as the final MMD of the horizontal ERW. This work...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-740
... ABSTRACT: Wellbore stability is an important issue for drilling a horizontal well or an extended reach well. In this paper, the distribution of the breakdown pressure and collapse pressure is calculated with varying well inclination and azimuth angles. Considering the formation seepage...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-175
... between collapse pressure and fracture pressure of the formation, to maintain the stability of borehole. In our work, the hydrate stability is taken into consideration to mitigate the hazards caused by the dissociation of hydrate. A case study is performed based on hydrate reservoir in permafrost region...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-329
... is compared with the breakout width model and the conventional one. The collapse pressure is predicted for the cases under three types of in-situ stress states, and the optimal well path under these three types of stress states is also discussed. The results indicated that the collapse pressure predicted from...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-513
... is the analysis of the pressurization on the annulus above top of cement, which can lead to casing system collapse due to trapped drilling mud. bulk modulus taquihydryte wellbore closure finite element analysis simulation configuration pipe collapse pressure mpa salt creep cavity wellbore...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-155
... was used to better predict collapse pressure, pore pressure and fracture gradient; which helped the drilling team to make better decisions while drilling. Our experience has shown that with the use of a geomechanical model, major geomechanical issues can be mitigated, drilling time may be reduced up to 50...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-260
... trajectory are controllable parameters and are considered key factors in the borehole design models, whereas rock strength and formation pore pressure (pf) are the main unmanageable parameters directly involved in the borehole stability models. In practice, rock strength is described by the collapse pressure...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-432
... been tested to predict borehole collapse pressure (CP). The fore most used criterion for brittle failure of rocks is the Mohr-Coulomb (M-C), Mogi-Coulomb, Modified Lade and Drucker-Prager. It is seen that either numerical or closedform analytical solutions of these constitutive models are the preferred...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-961
... a new analytical model to estimate the mud pressure required to avoid shear failure at the wall of non-vertical boreholes (i.e., the collapse pressure). This has been achieved by using a linear elastic and isotropic constitutive model for the stresses, and the Mogi-Coulomb criterion to predict failure...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-657
...-cylinder collapse Artificial Intelligence collapse pressure mechanism diameter reservoir geomechanics Upstream Oil & Gas volumetric strain volumetric strain profile CT scanner tomogram expression sample size Santarelli inner wall hollow cylinder breakout deformation Rock Mechanics...

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