Results 71 to 80 of about 4,593,729 (273)

The Puna Geothermal Venture Project power for the Island of Hawaii [PDF]

, 1990
Puna Geothermal Venture (PGV) was conceptually formed in 1980 and proceeded with local community, county and state cooperation to establish and develop a geothermal industry in Hawaii on the Big Island.
Richard, Maurice A.
core   +2 more sources

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source

Modeling proppant transport and settling in a 3D propagating fracture

Deep Underground Science and Engineering, EarlyView.
A versatile multiphysics tool is presented for simulating the complex processes involved in hydraulic fracturing treatments. The model couples fracture opening and propagation, variable‐density slurry flow, and proppant particle transport within the multiphysics object‐oriented simulation environment framework, based on two‐phase mixture equations and ...
Robert Egert, Aimé Fournier, Wencheng Jin   +2 more
wiley   +1 more source

World's fastest 10 000‐m breakthrough: The XY‐22 well redefines deep‐earth access in the Tarim Basin

Deep Underground Science and Engineering, EarlyView.
The Tarim Basin in northwestern China hosts one of the world's deepest petroleum systems, exemplified by the XY‐22 ultra‐deep well (bottom depth: 11 116 m; ~220°C, ~145 MPa). This study integrates tectonic mapping, geological cross‐sections, ultraviolet fluorescence microscopy, and optical photothermal infrared (OPTIR) spectroscopy to characterize ...
Qingwen Tan, Fangkai Liu, Sen Zhu, Guangyou Zhu, Haiping Huang   +4 more
wiley   +1 more source

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

The designation of geothermal subzones in Hawaii

, 1985
The issue of maintaining a balance between economic development and preservation of the environment is a major concern in Hawaii, which in 1961 became the first state in the nation to adopt sweeping statewide rand use controls. Hawaii suffers from a very
Yoshihara, Takeshi
core   +2 more sources

Prediction of regional hydrothermal geothermal resource carrying capacity based on multi-level fuzzy comprehensive evaluation: A case study of Zhengzhou, China

Case Studies in Thermal Engineering
Accurate assessment of geothermal resource carrying capacity (GRCC) is pivotal for sustainable energy development; however, existing methodologies often lack comprehensive integration of multi-dimensional factors.
Gaoli Zhao, Jianhua Ping, Xuemei Mei, Wei Leng, Quancheng Deng, Xiaopeng Fan   +5 more
doaj   +1 more source

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Techno-Economic Evaluation of Geothermal Energy Utilization of Co-Produced Water from Natural Gas Production

Energies
The utilization of thermal energy from co-produced water during natural gas production offers a promising pathway to enhance energy efficiency and reduce carbon emissions.
Lianzhong Sun, Hongyu Xiao, Zheng Chu, Lin Qiao, Yingqiang Yang, Lei Wang, Wenzhong Tian, Yinhui Zuo, Ting Li, Haijun Tang, Liping Chen, Dong Xiao   +11 more
doaj   +1 more source