Results 161 to 170 of about 2,063,981 (308)

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source

A variational phase field model of hydraulic fracturing

, 2019
Since their inception in the mid-90's, variational phase-field models of fracture [1] have steadily gained popularity. One of their strengths, the ability to handle complex topologies with unknown crack paths and the interaction between multiple cracks ...
Tanne, Erwan
core   +1 more source

Probabilistic characterization of seepage‐induced tunnel face failure via a two‐phase double‐point material point method

Deep Underground Science and Engineering, EarlyView.
To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong, Mingliang Zhou, Jie Xu, Zeyu Li, Yisheng Zhao, Jin An, Hongwei Huang   +6 more
wiley   +1 more source

Numerical investigation of natural fracture activation and leakage risk during CO2 sequestration in depleted sandstone reservoirs

Deep Underground Science and Engineering, EarlyView.
This study investigates the hydro‐mechanical response and fracture evolution in depleted sandstone reservoirs during CO2 injection, considering both direct wellbore injection and hydraulic‐fracture‐assisted injection. The graphical abstract illustrates how CO2 injection induces dynamic stress redistribution, leading to natural fracture activation ...
Haiyang Wang, Chen Lu, Yufei Wang, Yichen Yang, Xu Su, Desheng Zhou, Qingqing Wang   +6 more
wiley   +1 more source

Investigation on the mechanical behavior of the multiple‐layered lining structure of a water conveyance tunnel with high internal water pressure

Deep Underground Science and Engineering, EarlyView.
This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi, Shimin Wang, Chang Liu, Zhiyu Lin, Chuan He   +4 more
wiley   +1 more source

Development Trend and Key Technologies of Hydraulic End of High-Power Fracturing Pump

Shiyou jixie
As the development of unconventional oil and gas wells is increasingly difficult in China,the requirements are raised for the service life of hydraulic end of high-power fracturing pump in continuous fracturing operations with high power,ultrahigh ...
Yu Dawei, Tan Lijun, Shi Xijun
doaj  

Real‐time multiscale characterization of water migration in deep coal under stepwise pressure‐increasing injection: Combined low‐field nuclear magnetic resonance and multifractal approach

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates the real‐time multiscale characterization of water migration in deep coal under stepwise pressure‐increasing injection. Under in‐situ hydrostatic pressure, the water invasion front advances progressively along the axial direction as the injection pressure increases stepwise, tracked in real time by nuclear magnetic ...
Lei Song, Hongwei Zhou, Zelin Liu, Yimeng Wang, Xiaohai Zhang, Mingyuan Lu, Yang Ju   +6 more
wiley   +1 more source

Mechanistic Insights into CO2/CH4 Competitive Adsorption in Coal for Enhanced Methane Recovery and Carbon Sequestration

ACS Omega
Yifan Liu, Ziqi Shen, Yunzhong Jia, Juan Zhang, Caiyun Xiao, Xiao Sun   +5 more
doaj   +1 more source

Study on the Evolution Mechanism of Dynamic Conductivity of Hydraulic Fracturing Fractures Based on Proppant Flowback. [PDF]

ACS Omega
Bai Y, Wei H, Fang C, Zhang Z, Zhu M, Cai Z, Wang Y, Cao G, Cheng Q, Bai M.   +9 more
europepmc   +1 more source

A Perspective on Five‐Generation High‐Energy‐Density LiFePO4 Cathodes and Beyond: From Materials to Manufacturing

EcoEnergy, EarlyView.
This perspective examines the evolution toward fifth‐generation LiFePO4. Practical volumetric energy density depends on preserving ionic transport, electronic connectivity, mechanical integrity, and active‐material utilization across powder design and manufacturing.
Xia Huang, John Worsley, Thushan Pathirana, Xincheng Yang, Xiyue Peng, Bin Luo, Lianzhou Wang, Xiaobo Zhu   +7 more
wiley   +1 more source