Abstract As a commonly used and effective technology for increasing the permeability of coal–rock reservoirs, hydraulic fracturing has been widely in engineering sites to realize efficient exploitation utilization gas resources reservoirs. The core is initiation, propagation, path cracks. In this paper, combination true triaxial physical test numerical simulation study influence coal bedding ch...

BACKGROUND There is an increasing awareness of the multiple potential pathways leading to human health risks from hydraulic fracturing. Setback distances are a legislative method to mitigate potential risks. OBJECTIVES We attempted to determine whether legal setback distances between well-pad sites and the public are adequate in three shale plays. METHODS We reviewed geography, current stat...

The morphological control of the fracture has a great impact on the effectiveness of the hydraulic fracturing; the geostress difference between productive interval and barriers is one of controlling factors for the fracture height control. The propagation behavior of the hydraulic fracture was studied using the 3D physical simulation under conditions of the presence and absence of the interlami...

Organic Compounds Associated with Hydraulic Fracturing: Groundwater Composition and Natural Attenuation Potential by Brian D. Drollette Department of Civil and Environmental Engineering Duke University Date:_______________________ Approved: ___________________________ Desiree Plata, Supervisor ___________________________ Lee Ferguson ___________________________ Avner Vengosh An abstract of a th...

Hydraulic fracturing is used in the oil industry in order to increase the index of production and processing in the wells whose efficiencies have been dropped due to a long-term harvest or the rocks around the wells are of low permeability. Since the hydraulic fracturing operation is costly, it is of special importance to the project managers to determine the pressure required for hydraulic fra...

Enhanced fracture stimulation processes are generally used in the petroleum industry to increase the recovery of hydrocarbon reserves. In the in the United States in particular, more efficient and cost-effective reservoir fracturing treatments are needed to enhance the recovery of oil and natural gas in those stripper wells that are characterized by low-permeability reservoirs. Proposed is a we...

Researchers have recently realized thatsilty laminas are very developed in naturally fractured continentalsedimentary formations in the Ordos Basin(China). Studies have shown that silty laminas are significant to improve the physical properties and gas storage capacity, and the natural fractures interact with the hydraulic fractures to maximize the fracture network during hydraulic fracturing. ...

In this paper, numerical simulations of circular boreholes under internal hydraulic pressure are carried out to investigate the energy transferred to the surrounding rock and the breakdown pressure. The simulations are conducted by using a micromechanical continuum damage model proposed by Golshani et al. (2006). The simulation results suggest that the borehole breakdown pressure and the energy...