Results 221 to 230 of about 124,397 (269)
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The Fractal Nature of Fracture
Europhysics Letters (EPL), 1987The fractal geometry of fracture patterns in materials is explored by means of a simple model which incorporates the equations of elasticity and simple rules for fracture propagation. Different isotropic media and boundary conditions are considered. Self-similar patterns with fractal dimensions nearly independent of the elastic constants are obtained.
E Louis, F Guinea
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Nature of fractures in pyrocerams
Strength of Materials, 19801. The completely rough fracture surface of pyroceram 4 indicates that the surface and the bulk of this material have equal strength. This is confirmed by the equal defectiveness of the surface and of the fracture of pyroceram 4. 2. The fracture surface of pyrocerams 1–3 has several zones differing in roughness and defectiveness; this is
A. M. Raikhel' +3 more
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Mechanism for Network Fracturing in Natural Fractured Reservoir
Advanced Materials Research, 2013By the methods of in-house experiment and theory analysis, the fracture initiation, stretch and interconnected mechanism of natural fracture is studied in the fracturing process of main fracture and branch fracture extending. The results have shown that, the hydraulic fracture in fractured formation is composed of a few main fractures in large size and
Hong Liu +5 more
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Effect of Natural Fractures on Hydraulic Fracture Propagation
SPE European Formation Damage Conference, 2005Abstract Various fracture interaction criteria were reviewed and a systematic study is presented to analyze the effect of natural fractures on hydraulic fracture propagation. From the literature review, the approach of Warpinski and Teufel was adopted to evaluat the fracture propagation that would occur after a hydraulic fracture ...
N. Potluri, D. Zhu, A. D. Hill
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An Experiment in Natural Fracture
Lithic Technology, 1986AbstractCobbles and angular chunks of obsidian were subjected to breakage by being sent through the mail. The resulting assemblages of “flakes” and “cores” were analyzed to evaluate various criteria for distinguishing natural fracture from intentional stone knapping.
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Naturally Fractured Reservoirs
2019Currently, there are numerous of authors defined the fracture from a different perspective, However, from the geo-mechanical viewpoint; a fracture is defined as a surface in which a loss of solidity has taken place.
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Fracture Design Considerations in Naturally Fractured Reservoirs
International Meeting on Petroleum Engineering, 1988ABSTRACT The ability to effectively enhance production through hydraulic fracturing is dependent on an accurate description of the reservoir production mechanism(s). Fracture designs may differ greatly depending on the production mechanism(s). The complex nature of hydraulically fractured reservoirs in which the predominant production
C. L. Cipolla, P. T. Branagan, S. J. Lee
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72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
Numerical results have shown that at high angle of approach and differential stress, it is more likely for the hydraulic fracture to cross the natural fracture, whereas for a case where angle of approach and differential stress are low the hydraulic fracture is more likely to be arrested and then reorient the existing path and propagate through natural
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Numerical results have shown that at high angle of approach and differential stress, it is more likely for the hydraulic fracture to cross the natural fracture, whereas for a case where angle of approach and differential stress are low the hydraulic fracture is more likely to be arrested and then reorient the existing path and propagate through natural
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Natural Fracture Prediction for Discrete Fracture Modelling
Proceedings, 2014There are many uncertainties in the modelling of discrete fracture networks; largely due to their intense spatial variation and a lack of direct integration between interpreted fracture data at the well level and seismic scale fault interpretations. The method described addresses these two major challenges and demonstrates how these inputs can be used ...
H. Phillips +2 more
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Cancer Survivors at Greater Risk for Bone Fractures Late in Life
Ca-A Cancer Journal for Clinicians, 2023Mike Fillon
exaly