Topic
Permeability (earth sciences)
About: Permeability (earth sciences) is a research topic. Over the lifetime, 15424 publications have been published within this topic receiving 288535 citations.
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TL;DR: In this paper, the authors performed a systematic investigation of the controls on coalbed methane (CBM) relative permeability curve shape, including non-static fracture permeability and porosity, multi-layer effects and transient flow.
100 citations
TL;DR: A novel set of experimental apparatus was designed and constructed to study the changes in the fluid-flow properties of municipal solid waste related to the physical evolution of its structure under compression, and a unique relationship was found between the gas permeability and the volumetric gas content.
100 citations
TL;DR: In this article, compressive strength, permeability and hydraulic diffusivity of three different grades of concrete have been estimated through pore size distribution (PSD) parameters by using mercury intrusion porosimetry (MIP).
100 citations
TL;DR: In this paper, a study of slip flow in shale gas reservoirs is presented, where the slip boundary conditions were used to obtain the slip coefficients and tangential momentum accommodation coefficient in porous media from the experimental data.
100 citations
TL;DR: This study investigates, by numerical simulation, gas and water transport between a shallow tight-gas reservoir and a shallower overlying freshwater aquifer following hydraulic fracturing operations, and concludes that the key factors driving short-term transport of gas include high permeability for the connecting pathway and the overall volume of the connecting feature.
Abstract: Hydrocarbon production from unconventional resources and the use of reservoir stimulation techniques, such as hydraulic fracturing, has grown explosively over the last decade. However, concerns have arisen that reservoir stimulation creates significant environmental threats through the creation of permeable pathways connecting the stimulated reservoir with shallower freshwater aquifers, thus resulting in the contamination of potable groundwater by escaping hydrocarbons or other reservoir fluids. This study investigates, by numerical simulation, gas and water transport between a shallow tight-gas reservoir and a shallower overlying freshwater aquifer following hydraulic fracturing operations, if such a connecting pathway has been created. We focus on two general failure scenarios: (1) communication between the reservoir and aquifer via a connecting fracture or fault and (2) communication via a deteriorated, preexisting nearby well. We conclude that the key factors driving short-term transport of gas include high permeability for the connecting pathway and the overall volume of the connecting feature. Production from the reservoir is likely to mitigate release through reduction of available free gas and lowering of reservoir pressure, and not producing may increase the potential for release. We also find that hydrostatic tight-gas reservoirs are unlikely to act as a continuing source of migrating gas, as gas contained within the newly formed hydraulic fracture is the primary source for potential contamination. Such incidents of gas escape are likely to be limited in duration and scope for hydrostatic reservoirs. Reliable field and laboratory data must be acquired to constrain the factors and determine the likelihood of these outcomes.
99 citations