Results 291 to 300 of about 136,634 (354)

Borehole Investigations

2018
Borehole investigations allow practitioners to determine the nature and location of the different soil/rock layers, collect samples, carry out in situ tests and permeability tests, and, if necessary, install piezometers and other subsurface monitoring tools.
Kruse, Eduardo Emilio, Eslamian, Saeid, Ostad Ali Askari, Kaveh, Hosseini Teshnizi, Sayedeh Zahra   +3 more
openaire   +2 more sources

Experimental study of drainage radius considering borehole interaction based on 3D monitoring of gas pressure in coal

Fuel, 2019
In practical engineering, borehole drainage is the most effective and widely used method of extracting coalbed methane (CBM). The drainage radius of a borehole is a key parameter in determining the design and layout of drainage boreholes, and the ...
Chaolin Zhang, Jiang Xu, S. Peng, Qixian Li, Fazhi Yan   +4 more
semanticscholar   +1 more source

Effects of arrangement geometry and number of boreholes on thermal interaction coefficient of multi-borehole heat exchangers

Applied Energy, 2019
In large-scale ground-source heat pump applications, a large number of borehole heat exchangers are used and performance losses become an important issue due to thermal interactions.
A. Gultekin, M. Aydın, A. Sisman
semanticscholar   +1 more source

Experimental investigation on the breakdown pressure and fracture propagation of radial borehole fracturing

, 2022
Zhaoquan Guo, S. Tian, Qingling Liu, Luyao Ma, Yuning Yong, Ruiyue Yang   +5 more
semanticscholar   +1 more source

Borehole flowmeter applications in irregular and large-diameter boreholes

Journal of Applied Geophysics, 2004
High-resolution flowmeter measurements such as those obtained with heat-pulse and electromagnetic flowmeters are often analyzed to produce in situ permeability profiles of heterogeneous aquifers. However, the borehole environment exerts a strong influence on the accuracy of flow log data and its interpretation.
openaire   +1 more source

Numerical investigation on crack propagation and coalescence induced by dual-borehole blasting

, 2021
Chuanjin Pu, Xin Yang, Han Zhao, Zhenlin Chen, Dingjun Xiao   +4 more
semanticscholar   +1 more source

Parameters optimization of borehole and internal thermal resistance for single U-tube ground heat exchangers using Taguchi method

, 2019
The borehole thermal resistance and internal thermal resistance are both the significant design factors for the ground heat exchanger (GHE). Careful design procedures are required for these two values to decrease GHE’s length and initial cost.
K. Zhou, J. Mao, Yong Li, Jianyu Xiang
semanticscholar   +1 more source

Thermo-hydraulic performance of the U-tube borehole heat exchanger with a novel oval cross-section: Numerical approach

Energy Conversion and Management, 2018
In this paper, a novel U-tube Borehole Heat Exchanger (BHX) with an oval cross-section is proposed for improving the performance of Ground Source Heat Pump systems (GSHP). To study the thermo-hydraulic performance of Borehole Heat Exchanger (BHX) with an
Ahmed A. Serageldin, Yoshitaka Sakata, T. Katsura, K. Nagano   +3 more
semanticscholar   +1 more source

Borehole Gravity For Ccs

NSG2022 28th European Meeting of Environmental and Engineering Geophysics, 2022
Chris Nind, Nacim Foudilbey
openaire   +1 more source

Borehole yields.

Madras Agricultural Journal, 1919
Methods by which subterranean supplies of water may be made more available:- The water-bearing strata of the earth's crust may be broadly divided into three classes.- (1) Hard metamorphic rocks with fissures and cracks in them. (2) Stratified beds of rocks of varying degrees of porosity (3) massive or stratified deposits of sand or gravel.
openaire   +1 more source