An Investigation Into the Induced State of Stress Around Inclined Boreholes Under Non-hydrostatic Stress Conditions PDF Download
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Author: K. W. MacGregor
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: K. W. MacGregor
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: K. W. MacGregor
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
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Category : Petroleum
Languages : en
Pages : 404
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Author: Bernard Amadei
Publisher: Taylor & Francis US
ISBN: 9789058090997
Category : Rock mechanics
Languages : en
Pages : 600
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Author: British Library. Document Supply Centre
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 586
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Issue for Mar. 1981 contains index for Jan.-Mar. 1981 in microfiche form.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 784
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Author: Suzie Jia
Publisher:
ISBN:
Category : Engineering geology
Languages : en
Pages : 148
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Book Description
With the increasing exploitation of unconventional reservoirs, the demands of implementing geomechanics to improve the exploration and development process have been greater than before. Knowledge of in-situ stresses and rock failure mechanisms is key for building a comprehensive geomechanical model. Consequently, it is necessary to evaluate the state of stress in the Earth in order to design and efficiently operate engineered geothermal systems. The goal of this study is to investigate the variations of near-wellbore stress concentrations as a function of formation anisotropy, stress regimes and borehole relative orientations with respect to the in-situ stress, and then further examine the mechanical behavior of drilling induced tensile fractures. This is done by developing various MATLAB based analytical programs, creating numerical models and conducting lab simulations. Results from analytical models demonstrate that effects of formation anisotropy on borehole stress rise with increasing degree of anisotropy and the drilling-induced tensile fractures are not symmetrical when the borehole axis is not aligned with any of the in-situ stresses. Those models can also be integrated with different industry data sets to estimate the stress states in the formation of interest and enable us have better insights for drilling optimization, hydraulic fracturing design, completion planning and production maximization. Moreover, in the lab, both axial and en echelon drilling-induced tensile fractures were generated and their failure mechanisms agree with the general theory. Numerical models are not fully completed as the final goal is to develop a dynamic 3-D model based upon the current static model to simulate the lab processes in real-time.
Author: Allan F. Bower
Publisher: CRC Press
ISBN: 1439802483
Category : Science
Languages : en
Pages : 820
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Book Description
Modern computer simulations make stress analysis easy. As they continue to replace classical mathematical methods of analysis, these software programs require users to have a solid understanding of the fundamental principles on which they are based.Develop Intuitive Ability to Identify and Avoid Physically Meaningless PredictionsApplied Mechanics o
Author: Alain van Cotthem
Publisher: CRC Press
ISBN: 143983346X
Category : Technology & Engineering
Languages : en
Pages : 724
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Special emphasis is given to the constitutive behaviour of rock material, including rock mechanics and partial saturation, chemo-mechanics, thermo-hydro-mechanics, weathering and creep. Theoretical concepts, laboratory and field experiments and numerical simulations are discussed. Multiphysics coupling and long-term behaviour has practical applicat
Author: George Y. Baladi
Publisher:
ISBN:
Category : BOREHOLE (Computer program)
Languages : en
Pages : 64
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Book Description
This report documents the development of a closed form solution to the idealized borehole pressuremeter problem in linear elastic transverse isotropic media. The borehole was assumed to be infinitely long and pressurized by a static pressure. The mathematical equations for the distribution of stresses and displacements anywhere around the borehole are derived and incorporated into the computer program BOREHOLE. The solution is relevant to the field determination of constitutive properties for use in ground shock calculations. It shows that, in theory, the pressure versus borehole volume change relations from a series of borehole pressuremeter tests inclined at different angles can be used to deduce an appropriate set of linear elastic transverse-isotropic constitutive properties for a given medium and provide an index to the degree of anisotropy of the material. (Author).
