Results 171 to 180 of about 26,123 (301)

Principle and calculation method of hydraulic fracturing technique for in-situ stress based on two arbitrary holes. [PDF]

Sci Rep
Dong H, Jing W, Luo J, Zhang Z, Jing L, Zhang W, Lei Z.   +6 more
europepmc   +1 more source

Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells

Energy Science &Engineering, EarlyView.
Accounting for wellbore collapse debris and the bulldozer effect, this study develops models for permeable and impermeable sand bridge sticking in deep CBM horizontal wells, deriving resistance and volume formulations. Validated in Changqing, results show impermeable bridges dominate; controls (fluid optimization, staged drilling, circulation, speed ...
Cheng Hui, Yong Ouyang, Zhifeng Duan, Xiaoyue Xu, Yuxiang Teng, Mingyang Liu, Hui Zhang, Long Chen   +7 more
wiley   +1 more source

Hydraulic fracturing analysis in fluid-saturated porous medium. [PDF]

Int J Numer Anal Methods Geomech, 2022
Chen L, Fathi F, de Borst R.
europepmc   +1 more source

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, EarlyView.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

The mechanism of permeability enhancement of coal seams by hydraulic fracturing based on the characterization of coal physical properties. [PDF]

Sci Rep
Zhao X, Zhao D, Nie B, Liu X, Liu P, Wang M, Hu B, Li H, Deng C, Duan Z.   +9 more
europepmc   +1 more source

Microbial Communities Affected by Hydraulic Fracturing and Environmental Factors within an In Situ Coal Reservoir. [PDF]

Microorganisms, 2023
Li Y, Chen J, Tang S, Xi Z.
europepmc   +1 more source

Research on Precise Identification of Rock Strength Based on Bolt Drilling Parameters

Energy Science &Engineering, EarlyView.
Drilling detection test platform. ABSTRACT During roadway excavation, the presence of weak interlayers and fractured rock masses significantly affects roof stability. To achieve timely and effective roadway support, it is crucial to identify and predict different rock types based on drilling signals from roof bolters.
Qiang Zhu, Sheng Biao Wang, Da Jiang Wen, Chong‐Yu Song, Kang Zhou   +4 more
wiley   +1 more source

Hydraulic Fracturing Simulation Experiments and Fracture Characterization of Coal Reservoirs in the Dahebian Syncline. [PDF]

ACS Omega
Wei Y, Zhao F, Fu Y, Zhao L, Liu W, Zhou X.   +5 more
europepmc   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science &Engineering, EarlyView.
With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
wiley   +1 more source

Review of the environmental and health risks of hydraulic fracturing fluids. [PDF]

Heliyon
Makki S, Maalouf E, Yehya A.
europepmc   +1 more source