Bakken shale has been subjected to more attention during the last decade. Recently released reports discussing the high potential of the Bakken formation coupled with advancements in horizontal drilling, increased the interest of oil companies for investment in this field. Bakken fo rmation is comprised of three layers. In th is study upper and middle parts are the core of attention. Middle mem...

Estimates of technically recoverable shale gas resources remain highly uncertain, even in regions with a relatively long history of shale gas production. This paper examines the reasons for these uncertainties, focussing in particular on the methods used to derive resource estimates. Such estimates can be based upon the extrapolation of previous production experience in developed areas, or from...

Shale oil and source rock samples of the Carboniferous Keluke Formation from well Chaiye 2 in Delingha Depression were analyzed by gas chromatography–mass spectrometry. Source rocks highly mature at generation stage with vitrinite reflectance (Ro) 1.45–1.88%. However, produced shale reservoir was characterized abundant biomarkers but low abundance diamondoid hydrocarbons estimated Ro ca. 0.78%,...

This study estimates the life cycle water consumption and wastewater generation impacts of a Marcellus shale gas well from its construction to end of life. Direct water consumption at the well site was assessed by analysis of data from approximately 500 individual well completion reports collected in 2010 by the Pennsylvania Department of Conservation and Natural Resources. Indirect water consu...

The dynamic productivity prediction of shale condensate gas reservoirs is great significance to the optimization stimulation measures. Therefore, in this study, a method for based on convolution equation proposed. has been used predict production 10 multi-stage fractured horizontal wells Duvernay reservoir. results show that flow-rate deconvolution algorithms can greatly improve fitting effect ...

During the hydraulic fracturing procedure in shale-gas exploitation, the poroelastic properties of shale formation can be altered significantly. However, it is difficult to evaluate these variations using microseismic field data. In this study, we conduct a hydro-fracturing experiment using Longmaxi shale, which is a major formation for shale-gas production in China, to simulate the water injec...

Hydraulic fracturing of deep shale beds to develop natural gas has caused concern regarding the potential for various forms of water pollution. Two potential pathways-advective transport through bulk media and preferential flow through fractures-could allow the transport of contaminants from the fractured shale to aquifers. There is substantial geologic evidence that natural vertical flow drive...