Results 81 to 90 of about 400,038 (284)

Testing Various Cement Formulations under Temperature Cycles and Drying Shrinkage for Low-Temperature Geothermal Wells. [PDF]

Materials (Basel), 2023
Fischer HR, Moghadam A.
europepmc   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Study on thermal insulation cement and its thermal insulation characteristics for geothermal wells. [PDF]

Sci Rep, 2023
Zhou W, Wang C, Meng R, Chen Z, Lu H, Chi J.   +5 more
europepmc   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Air-Lifting Reverse-Circulation Drilling in Deep Geothermal Wells and the Effect of Dual-Wall Drill Pipe Depth Down the Hole

Energies
Geothermal energy is a renewable energy source that is rich in reserves, widely distributed, stable and reliable. The development of geothermal energy needs to be carried out by drilling wells to exploit the underground thermal fluid, and air-lift ...
Hongyu Ye, Ziwei Lai, Longjun Tian, Renjie Zhang, Bin Liu, Xiuhua Zheng   +5 more
doaj   +1 more source

Using Fumed Silica to Develop Thermal Insulation Cement for Medium-Low Temperature Geothermal Wells. [PDF]

Materials (Basel), 2022
Shen L, Tan H, Ye Y, He W.
europepmc   +1 more source

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

Investigation of Thermal Stress of Cement Sheath for Geothermal Wells during Fracturing

Energies, 2018
Geothermal energy development has increasingly been studied in recently decades because of its renewable and sustainable features. It can be divided into two categories: traditional geothermal (hydrothermal) systems and enhanced geothermal systems (EGS ...
Honglin Xu, Nian Peng, Tianshou Ma, Bin Yang   +3 more
doaj   +1 more source

Resource Utilization of Red Mud from the Solid Waste of Aluminum Industry Used in Geothermal Wells. [PDF]

Materials (Basel), 2022
Wu Z, Li L, Gao F, Zhang G, Cai J, Cheng X.   +5 more
europepmc   +1 more source

3D Visualization of Geothermal Features

, 2005
In this study, 3D visualization of temperature distribution in the Kizildere geothermal system and low resistvity distribution in Salavatli geothermal system were built using 3D interpolation and extrapolation techniques.
Serpen, U, Kaya, Eylem, Aksoy, N
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