Rotary drilling belongs to the key methods of rock separation not only in mining, but also in wider areas of geotechnologies 1, 2 . The most efficient separation of rocks is in so-called volume area which can be achieved with the correct choice of work tool and work mode while taking into account the geomechanical properties of rock separation. Theoretical research of rock separation by rotary ...

Over four months of continuously recorded microearthquake data acquired at Cold Lake, Canada was analyzed using advanced algorithms for micro-earthquake location and subsurface imaging. Robust determination of the spatial, temporal and magnitude distribution of seismicity is the first step towards understanding the relationship between the stress perturbations caused by the Cyclic Steam Stimula...

Abstract Optimum perforation location selection is an important study to improve well production and hence in the reservoir development process, especially for unconventional high-pressure formations such as under study. Reservoir geomechanics one of key factors find optimal location. This aims detect optimum by investigating changes geomechanical properties wellbore stress studying difference ...

This paper documents our effort to use a fully coupled hydro-geomechanical numerical test bed to study using low hydraulic pressure to stimulate geothermal reservoirs with existing fracture network. In this low pressure stimulation strategy, fluid pressure is lower than the minimum in situ compressive stress, so the fractures are not completely open but permeability improvement can be achieved ...

Compacted clay has traditionally been used as a lining material in municipal solid waste landfills. However, natural clays may not always provide good contaminant sorption properties. One alternative material that is abundant in some parts of Europe and Turkey as well as Western United States is sepiolite. A laboratory study was undertaken to investigate the feasibility of sepiolite as a liner ...

Abstract Acidizing is one of the most used stimulation techniques in petroleum industry. Several reports have been issued on difficulties encountered during operation Ahdeb oil field, particularly development Mishrif reservoir, including following: (1) high injection pressures make it difficult to inject acid into reservoir formation, and (2) only a few jobs effective wells, while bulk others h...