Results 231 to 240 of about 34,203 (251)
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Borehole Stability in Oil Sands Under Drilling
Journal of Canadian Petroleum Technology, 2002Abstract Holes were drilled in natural oil sands and reconstituted oilfree sand cores mounted inside a specially designed triaxial cell to investigate the borehole stability under hydrostatic loading. Tests involving hot water circulation inside the drilled hole were conducted to explore the effect of thermal ...
R.C.K. Wong, K.C. Yeung
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Integrated Borehole Stability Analysis - Against Tradition
Proceedings of SPE/ISRM Rock Mechanics in Petroleum Engineering, 1998Abstract Technological advances in drilling equipment, directional control and mud systems and a better understanding of reservoir properties have resulted in the drilling of an increasing number of highly deviated and horizontal wells.
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Borehole Stability Assessment Using Quantitative Risk Analysis
Proceedings of SPE/IADC Drilling Conference, 1999Abstract A new wellbore stability analysis method based on Quantitative Risk Analysis (QRA) principles is described in this paper. Limit state functions that define the limit for failure (stuck pipe due to excessive breakout) and success (operationally tolerable magnitudes of breakout) are defined as functions of wellbore trajectory and ...
S. Ottesen, R. H. Zheng, R. C. McCann
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Generalized Continuum Models for Borehole Stability Analysis
Rock Mechanics in Petroleum Engineering, 1994Abstract Generalized continuum models are becoming common in studies aiming at capturing the heterogeneous character of the deformation of granular rocks. Their constitutive equations take into account characteristics of the microstructure of the material which regularize the mathematically ill-posed problem of strain softening ...
E. Päpamichos, I. Vardoulakis, J. Sulem
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Effects of reservoir depletion on borehole stability
Journal of Petroleum Science and Engineering, 1991Abstract A simple model has been derived to estimate changes in critical borehole collapse and fracturing pressures when the pore pressure is depleted in the reservoir. The model estimates the increased rock matrix stress when the pore fluid is withdrawn.
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Stability and Bifurcation in Reinforced Boreholes
2014Rock nailing of a borehole is considered as a means to reinforce the rock and increase its borehole failure strength. The technique is modeled using Cox’s original shear-lag method. In the continuum sense, nail reinforcement is viewed as a body force that acts as a confinement.
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Poroelastoplastic Modeling of Borehole Stability
GeoCongress 2012, 2012Karrthik Kirupakaran +2 more
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Borehole Stability in the Ghareb Formation.
Proposed for presentation at the NNSA-IAEC Workshop on Nuclear Waste Management and Subsurface Science held November 8-10, 2022 in Jerusalem, Israel, 2022William Kibikas +7 more
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International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1995
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