Multi-stage hydraulic fracturing has been identified as a must to develop shale gas
reservoirs by increasing the stimulated reservoir volume (SRV). Supercritical CO 2 (scCO 2) …

The quantitative determination of the geological strength index (GSI) and disturbance factor
(D) in the Hoek–Brown failure criterion is of great value because it can increase the …

Brittleness is an intrinsic mechanical property of rock materials that has attracted significant
attention to be properly quantified as it plays an important role in characterization of brittle …

随着埋藏深度的增加, 构造复杂程度, 地层温度和压力增加, 地层闭合压力, 地应力差,
杨氏模量和抗压**度等力学参数也都有不同程度的增大, 水**井分段多簇压裂技术在深层页岩气 …

Accurate evaluations of rock brittleness are very significant in the engineering geology and
geotechnical engineering fields. Most previous studies have adopted the stress–strain …

Fracability evaluation for unconventional reservoir is critical to the selection of candidate
zones for post-frac productivity and plays a key role in fracturing design. Historically, the …

In underground coal mining, coal failure generally occurs due to the relatively weak strength
of the coal and the high applied mining-induced stresses. The outer complex geological …

The hydraulic fracturing technology is widely applied in the fields of groundwater hydraulics,
hydrogeology, geo-environmental engineering and the oil and gas industry. Bio-cemented …

The brittleness index of rocks is able to provide crucial guidance to the operation of the
drilling and hydraulic fracturing. The definition and evaluation method of the rock brittleness …

The continuous injection of fracturing fluid results in a redistribution of stress in the area
affected by fracturing, which promotes the deformation and failure of coal. To reveal the …