Fracturing process and possible factors influencing crack initiation, propagation and
coalescence of granitic rocks are investigated using a grain-based finite-discrete element …

Hydraulic fracturing is the prime technology for enhancing production from unconventional
reservoirs. Design and operation of hydraulic fracturing requires adequate knowledge of …

The brittleness and low cracking resistance of oil-and gas-well cement threaten its integrity,
specially under the high stress concentrations at bottom-hole conditions. Fortunately, the …

Well stimulation methods such as hydraulic fracturing are often utilized in order to increase
the productivity index and permeability of the reservoir's rock. On the other hand, explosion …

Geothermal reservoirs, oil wells, radioactive waste disposals, and deep underground mines
deal with high-temperature and high-pressure problems. The thermo-hydromechanical …

Hydraulic fracturing is one of the key technologies to stimulate oil and gas production in low-
porosity and low-permeability reservoirs. Thus, understanding the hydraulic fracture (HF) …

The tight sandstone in the Tarim Basin has the characteristics of large burial depth and
development of nature fractures due to concentrated in-situ stress. Identifying the present …

In this study, a heterogeneous discrete element model of granite was built considering
different mineral contacts, different mineral grains, and the percentages of minerals which …

Directional hydraulic fracturing (DHF) is more and more widely used in coal mines in China
for hard roof and coal burst control. The key to this technology is to determine the crack …

Hydraulic fracture is one of the key methods in well stimulation to increase production of oil
and gas. Crack Opening Displacement (COD) is of great importance in this method since it is …