Results 21 to 30 of about 526 (138)

Dynamic influence of coal fine intrusion on propped fracture permeability

Meitan xuebao
Coal fine intrusion into hydraulic propped fractures of coal seam easily leads to the blockage of the fracture, resulting in the decrease of the conductivity and the reduction of coal reservoir permeability, which seriously affects the stable discharge ...
Xitu ZHANG, Shengyong HU, Xi WU, Guofu LI, Guorui FENG, Yanfeng WANG, Zhaoying CHEN   +6 more
doaj   +1 more source

An Open-Source Code for Fluid Flow Simulations in Unconventional Fractured Reservoirs

Geosciences, 2021
In this article, an open-source code for the simulation of fluid flow, including adsorption, transport, and indirect hydromechanical coupling in unconventional fractured reservoirs is described.
Bin Wang, Corrado Fidelibus
doaj   +1 more source

Fracture propagation, proppant transport and parameter optimization of multi-well pad fracturing treatment

Petroleum Exploration and Development, 2023
This paper establishes a 3D multi-well pad fracturing numerical model coupled with fracture propagation and proppant migration based on the displacement discontinuity method and Eulerian-Eulerian frameworks, and the fracture propagation and proppant ...
Peng YANG, Shicheng ZHANG, Yushi ZOU, Jianmin LI, Xinfang MA, Gang TIAN, Junchao WANG   +6 more
doaj   +1 more source

Lower Extremity Sprains and Knee/Ankle Injury Predominate Among Pediatric Dancers

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To determine the most common body regions, diagnoses, and mechanisms of injury among pediatric dance‐related injuries in the United States. Methods A descriptive epidemiologic analysis of the National Electronic Injury Surveillance System from January 1, 2019 to December 31, 2023 identified emergency department presentations for primary dance ...
Katherine Koch, Philip M. Lee, Cameron Nishida, Sonya B. Levine, Kyle K. Obana, Jennifer M. Weiss, Jennifer King   +6 more
wiley   +1 more source

Research progress and understanding of fracturing fractures in horizontal wells of marine shale in Sichuan Basin [PDF]

Youqicang pingjia yu kaifa
The rapid development of shale gas, a clean and low-carbon unconventional natural gas, plays a key role in supporting China’s goals for achieving a carbon peak and carbon neutrality.
YANG Zhaozhong, YUAN Jianfeng, ZHANG Jingqiang, LI Xiaogang, ZHU Jingyi, HE Jiangang
doaj   +3 more sources

Determination of Hydraulic Properties of a Large Self-Propped Hydraulic Fracture in the Geothermal Research Borehole Horstberg Z1 in the Northwest German Basin

Geofluids, 2019
The pressure records of an interference test on a huge hydraulic fracture in a layered sedimentary rock formation of the Northwest German Basin were analysed in order to determine fracture transmissivity and fracture storage coefficient. The fracture had
Reinhard Jung, Alireza Hassanzadegan, Torsten Tischner   +2 more
doaj   +1 more source

Exploitation of fractured shale oil resources by cyclic CO2 injection

Petroleum Science, 2018
With shale oil reservoir pressure depletion and recovery of hydrocarbons from formations, the fracture apertures and conductivity are subject to reduction due to the interaction between stress effects and proppants.
Tao Wan, Hong-Xian Liu
doaj   +1 more source

How flow velocity affects the conductivity of propped coal fracture: New insights

International Journal of Coal Science & Technology
The conductivity of propped fracture in coal exerts a profound effect on the transport of coalbed methane (CBM) from low-permeable coal seams with hydraulic fracturing stimulation.
Ruishuai Ma, Jiyuan Zhang, Qihong Feng, Zhejun Pan, Sen Wang, Liang Wang, Youjun Yang   +6 more
doaj   +1 more source

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source

Weak‐Story Mitigation and Drift Redistribution in Moment‐Resisting Frames Using Stepping Rocking Walls

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This study investigates the seismic response of moment‐resisting frames retrofitted with a stepping rocking wall, with emphasis on weak‐story mitigation and residual drift reduction under both ordinary and pulse‐like ground motions. Nonlinear response‐history analyses are conducted on 9‐story and 20‐story SAC Los Angeles frames.
Mehrdad Aghagholizadeh
wiley   +1 more source