Results 301 to 310 of about 74,096 (359)
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The geology of the oceanographer fracture zone: A model for fracture zones
Journal of Geophysical Research, 1976An unreversed refraction experiment located 325 km west of the center of the Oceanographer transform and aligned along the axis of the fracture zone yielded information on the velocity structure of the crust within the fracture zone axis. A layer 2 km thick having a compressional wave velocity of 4.4 km/s overlies a layer with a compressional wave ...
Edward Schreiber +3 more
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Geology and Geometry: A Review of Factors Affecting the Effectiveness of Hydraulic Fracturing
Proceedings of SPE Eastern Regional Meeting, 2005Abstract Thousands of wells are hydraulically fractured in the Appalachian Basin each year with little clear understanding of what the resulting fracture actually looks like. A number of variables exist in the subsurface including natural fractures, permeability variations, in-situ stresses, faults, etc.
Roger B. Willis +3 more
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Folding and Fracturing of Rocks : the birth of modern structural geology
Geological Society, London, Special Publications, 2018Abstract In 1967, the publication of John Ramsay's book, Folding and Fracturing of Rocks , was a landmark event that affected both of us, inspiring us into careers in structural geology. At that time, one of us was a postgraduate student at Imperial College, London, the other a second-year undergraduate at
Peter J. Hudleston, Susan H. Treagus
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Description of Natural Fracture Systems for Quantitative Use in Petroleum Geology (1)
AAPG Bulletin, 1990We present a method for estimating fracture porosity and permeability from measurements of fractures in small samples of a fracture system. A fracture system is divided into domains from which samples are collected. Lengths, widths, and numbers of fractures present in samples are measured and then summarized in density and distribution functions. These
J. H. Howard, Richard C. Nolen-Hoeksema
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A modified seismic reflection approach for engineering geology investigation in fractured rock zones
Engineering Geology, 2020Abstract Delineating soil/rock interface is critical for geotechnical and tunnel site investigations in engineering geology. In Singapore, we also need to draw attention to local faults and fractured rock zones because the regional geology of Peninsular Malaysia and Singapore contains some minor, steep and brittle faults propagating at some areas in ...
Yunyue Elita Li +3 more
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International Journal of Oil, Gas and Coal Technology, 2015
A great portion of the world's oil reserves is contained in naturally fractured reservoirs (NFRs). As the conventional oil and gas reservoirs have become significantly depleted whereas energy demand sharply increases, the NFRs play an important role in oil exploration and make a large contribution toward oil and gas production worldwide.
Chen, Zhangxing (John) +3 more
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A great portion of the world's oil reserves is contained in naturally fractured reservoirs (NFRs). As the conventional oil and gas reservoirs have become significantly depleted whereas energy demand sharply increases, the NFRs play an important role in oil exploration and make a large contribution toward oil and gas production worldwide.
Chen, Zhangxing (John) +3 more
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Application of Photogrammetry in Geology: 3D Investigation of Rock Fracture Distributions
2006Geology as a science has an important visual component and the knowledge of any geologist is deeply linked to visual experience of rock outcrops, thin sections and analytical images. One of the shortcomings of most geological images such as maps, cross sections and outcrop photographs is that they are 2D, while processes geologists are interested in ...
Klaus Gessner, Hagen Deckert
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Asia Pacific Unconventional Resources Symposium, 2023
Abstract Engineered completion designs consider reservoir quality (RQ) and completion quality (CQ) for horizontal well completion optimization. This is more effective than the geometric strategy that is sometimes used. However, both RQ and CQ are derived from the wellbore logs, which means the true geology and reservoir properties inside
Yuan Liu +7 more
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Abstract Engineered completion designs consider reservoir quality (RQ) and completion quality (CQ) for horizontal well completion optimization. This is more effective than the geometric strategy that is sometimes used. However, both RQ and CQ are derived from the wellbore logs, which means the true geology and reservoir properties inside
Yuan Liu +7 more
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Predicting hydrology of fractured rock masses from geology
2000Fracture network connectivity often dominates movement rate, flow volume, and mass transport through rock masses. These networks influence the effectiveness of petroleum reservoir development, safe disposal of nuclear waste, delineation of water supply or establishment of well-head protection plans, recovery from geothermal reservoirs, solution mining,
R Paul, La Pointe
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