chongqing east air hydraulic fracture

Investigation of Hydraulic Fracturing Crack Propagation ...

Coalbed methane is not only a clean energy source, but also a major problem affecting the efficient production of coal mines. Hydraulic fracturing is an effective technology for enhancing the coal seam permeability to achieve the efficient extraction of methane. This study investigated the effect of a coal seam reservoir''s geological factors on the initiation pressure and fracture …A Crack Propagation Control Study of Directional …2020-8-3 · Hydraulic fracturing techniques for developing deeply buried coal reservoirs face routine problems related to high initial pressures and limited control over the fracture propagation direction. A novel method of directional hydraulic fracturing (DHF) based on hydraulic slotting in a nonuniform pore pressure field is proposed. A mechanical model is used to address crack …

Hydraulic Fracturing Induced Seismicity in the Southern ...

2020-1-29 · Alternatively, the hydraulic fractures and preexisting faults may be isolated but the stress changes due to elastic response of the rock matrix to hydraulic fracturing are transmitted to the faults and prompt the fault slip (e.g., Bao & Eaton, 2016; Deng et al., 2016; Goebel & Brodsky, 2018; Segall & Lu, 2015).Hydraulic Fracturing; Environmental Issue2016-2-6 · A hydraulic fracture is formed by pumping the fracturing fluid into the wellbore at a rate sufficient to increase pressure downhole at the target zone (determined by the location of the well casing perforations) to exceed that of the fracture gradient (pressure gradient) of the

Quan GAN | professsor | Doctor of Philosophy | Chongqing ...

The fracture initiation and propagation during hydraulic fracturing is primary constrained by local stress field, hydraulic pressure magnitude, coal properties, and natural fractures. In this work ...Study on gas drainage effect of hydraulic fracturing in .. acture initiation pressure of 3# coal seam in Guojiahe coal mine is 15~20MPa. When the water injection is ... The fracture of hydraulic fracturing creates good ... return air gateway of 1307 ...

Hydraulic fracturing characteristics and evaluation of ...

2022-1-1 · A more tortuous hydraulic fracture may lead to a larger fracture volume, but this variation may be untenable in a varying fracture width (Li et al., 2011). Overall, the agreement verifies the effect of injection rates that can contribute to more tortuous and greater volume hydraulic fracture.(PDF) Hydraulic Fracturing Process - ResearchGateThe smaller horizontal stress difference is, the easier hydraulic fracture tends to be perpendicular to natural fracture, and the hydraulic fractures propagation direction easier to parallel to ...

Determination of the key parameters of high‐position hard ...

2020-4-1 · The hydraulic fracture of the second horizon extended along the NW68° direction. The two hydraulic fractures were distributed in strike on the east and west wings with the vertical well as the center. The hydraulic fractures in the two wings were spread evenly and are basically distributed symmetrically.Hydraulic fracturing characteristics and evaluation of ...2022-1-1 · A more tortuous hydraulic fracture may lead to a larger fracture volume, but this variation may be untenable in a varying fracture width (Li et al., 2011). Overall, the agreement verifies the effect of injection rates that can contribute to more tortuous and greater volume hydraulic fracture.

Hydraulic Fracturing Characteristics and Stimulation ...

2021-3-4 · According to the post fracturing production performance characteristics of the operation wells in Sinopec Argentina work area of San Jorge basin, the more intensive the reconstruction is, the worse the effect is. By comparing the characteristics of typical wells, combining with the distribution characteristics of reservoir, the influence of tuffaceous matter, …Ren XIANGYAN | Master of safety science and engineering ...Hydraulic fractures initialized from different perforations have different contributions to well production. Therefore, it is essential to study the competitive propagation of hydraulic fractures ...

Experimental investigation on hydraulic fracturing in ...

2022-1-1 · Hydraulic fracturing in cement mortar under different splitting loads are conducted to obtain critical water pressure. The results show critical water pressure will decrease if the tensile stress increases. Hydraulic fracturing mechanism is analyzed based on the Biot''s theory and fracture process zone of quasi-brittle material.Crack propagation and hydraulic fracturing in different ...2019-8-16 · We simulated hydraulic fracturing in different lithologic rocks in the horizontal drilling by using the true physical model experiment and large rock specimens, carried out the real-time dynamic monitoring with adding tracer and then did post-fracturing cutting and so on. Based on this monitoring results, we compared and assessed the factors affecting expansion in shale, …

Laboratory-scale hydraulic fracturing dataset for ...

2020-7-8 · Fracture growth and propagation was monitored by measuring pressure data and acoustic emissions detected using 32 seismic sensors. ...Hydraulic Fracture Injection Strategy Influences the ...2019-11-13 · The M W 4.0 HF-induced event occurred ~10 km east of the largest earthquake recorded in the EF: a M W 4.8 earthquake in October 2011 attributed to fluid extraction (Frohlich & Brunt, 2013). The best determined location of the October 2011 event (Frohlich & Brunt, 2013 ) is inside Region 2, in close proximity to sequences in Region 2 that ...

Crack propagation and hydraulic fracturing in different ...

2019-8-16 · We simulated hydraulic fracturing in different lithologic rocks in the horizontal drilling by using the true physical model experiment and large rock specimens, carried out the real-time dynamic monitoring with adding tracer and then did post-fracturing cutting and so on. Based on this monitoring results, we compared and assessed the factors affecting expansion in shale, …Experimental investigation on hydraulic fracturing in ...2022-1-1 · Hydraulic fracturing in cement mortar under different splitting loads are conducted to obtain critical water pressure. The results show critical water pressure will decrease if the tensile stress increases. Hydraulic fracturing mechanism is analyzed based on the Biot''s theory and fracture process zone of quasi-brittle material.

A Crack Propagation Control Study of Directional …

2020-8-3 · Hydraulic fracturing techniques for developing deeply buried coal reservoirs face routine problems related to high initial pressures and limited control over the fracture propagation direction. A novel method of directional hydraulic fracturing (DHF) based on hydraulic slotting in a nonuniform pore pressure field is proposed. A mechanical model is used to address crack …Hydraulic fracturing of rock-fill dam - ResearchGateHydraulic fracturing of rock-fill dam Jun-Jie WANG * Ph.D., Associate Professor, College of River & Ocean Engineering, Chongqing Jiaotong University, 66 Xuefu Road, NanÕan District,