Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"fracture permeability"”.
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Characterization of anisotropy in organic-rich shales: shear and tensile failure, wave velocity, matrix and fracture permeability
Lamination and fractures are common features in organic-rich shales. The objective of this thesis is to determine the impact of lamination and fractures on elastic properties, shear and tensile failures, and the permeability of organic-rich shales. The elastic properties of rocks determine the …
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An experimental study on characterization of physical properties of ultramafic rocks and controls on evolution of fracture permeability during serpentinization at hydrothermal conditions
… Each core had a well-mated through-going tensile fracture, to investigate evolution of fracture permeability during serpentinization. The samples were tested in a triaxial loading machine at an effective pressure of 30 MPa, and temperature of 260°C, simulating a depth of 2 km under hydrostatic …
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Implications of Permeability Uncertainty During Three-phase CO2 Flow in a Basalt Fracture Network
… short time-scales. Flood basalts also possess a permeability structure favorable for injection, with alternating high-permeability (flow margin) and low-permeability (flow interior) layers. However, little information exists on the behavior of CO₂ as it leaks through fractures characteristic of …
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Structural Controls of the Black Warrior Blind Geothermal System, Washoe-Churchill Counties, Truckee Range, Nevada, USA
… with abundant closely spaced faults and high fracture permeability; and/or (2) a narrow fault step-over ~3-5 km wide between two major normal faults, whereby many closely-spaced minor faults provide hard linkage and a zone of high fracture permeability. Thus, the study area resides in a hybrid …
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Determination of fractured aquifer characteristics from evaluation of pump tests of wells in the crystalline rocks of the Blue Ridge allocthon
… assemblage with the predominance of porosity and permeability of the formations attributed to secondary factors. Aquifer characteristics of transmissivity, storage coefficient, hydraulic conductivity and fracture NL) permeability are determined from evaluation of pump tests conducted on ground …
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Controlling Factors on Condensate Production from the Eagle Ford Shale
… of key properties such as porosity and permeability as well as other controlling factors that include the horizontal wells length, liquid drop out and liquid loading around the wellbore. It also addresses the possibility of lean gas injection. It is found that production of heavy ends …
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Evaluation of diagnostic fracture injection test (DFIT) and rate transient analysis (RTA) in Hereford field, northern DJ Basin
… techniques for stimulating these ultra-low permeability reservoirs. Furthermore, unlike conventional reservoirs, unconventional reservoirs require a much deeper understanding of reservoir sediment. Geology and geophysics can provide information on the nature of sediments and structural …
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A Parametric Study and Economic Evaluation of Drilling Patterns in Deep, Thick CBM Reservoirs
… from CBM. These characteristics include fracture permeability, fracture porosity, gas content, and desorption time. The yardstick for comparing the economical practicality of different drilling configurations under diverse reservoir properties is the Net Present Value (NPV).
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Analytical Modeling of Multi-Fractured Horizontal Wells in Heterogeneous Unconventional Reservoirs
Current analytical models for multi-fractured horizontal wells (MFHW) generally neglect reservoir heterogeneity, typical seepage characters of unconventional reservoir, partially penetrating fracture and various fracture damage mechanisms. In this thesis, three linear flow models have been …
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Experimental, Theoretical, and Numerical Investigations of Geomechanics/Flow Coupling in Energy Georeservoirs
… energy resources from shale, a fine-grained, low-permeability geological formation, has altered the global energy landscape. Constricting pressure exerted on a shale formation has a significant effect on the rock's apparent permeability. Gas flow in low-permeability shales is significantly …
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The effects of seismic blasting on shallow water wells and aquifers in western North Dakota
… as a mechanism for the increase. Collapse of fractures is suggested as the failure mechanism in the coal aquifer. Well casings remained intact after 25 pound charges were detonated as close as 10 feet from a well screen. Currently available methods for evaluating pump test data do not …