Results 281 to 290 of about 136,634 (354)
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, 2020
The peak explosion pressure acting on the borehole wall in decoupling charge blasting was investigated by employing analytical, numerical, and experimental approaches. The theoretical solution of the pressure increase ratio after collision between an air
Ming Chen +4 more
semanticscholar +1 more source
The peak explosion pressure acting on the borehole wall in decoupling charge blasting was investigated by employing analytical, numerical, and experimental approaches. The theoretical solution of the pressure increase ratio after collision between an air
Ming Chen +4 more
semanticscholar +1 more source
, 2020
The low gas extraction concentration is one of the main factors that affect the prevention and control effect of coal and gas outburst. Based on this, the factors of air leakage around the roadway and borehole are analyzed. The effect of extraction time,
Hao Wang +6 more
semanticscholar +1 more source
The low gas extraction concentration is one of the main factors that affect the prevention and control effect of coal and gas outburst. Based on this, the factors of air leakage around the roadway and borehole are analyzed. The effect of extraction time,
Hao Wang +6 more
semanticscholar +1 more source
Analysis of Dipole Antenna Eccentered in a Borehole for Borehole Radar
2007 4th International Workshop on, Advanced Ground Penetrating Radar, 2007In this paper, we analyze response of borehole radar that use an electrically small dipole antenna in an eccentric borehole. Our approach is an extended version of the pseudoanalytic formulation, which was previously applied for analysis of an induction logging tool. In order to verify the calculation method, we did two experiments.
S. Ebihara, Y. Inoue
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A Model of Planar Borehole Propagation
SIAM Journal on Applied Mathematics, 2017Summary: Drilling geometrically complex boreholes in the subsurface has been made possible with the development of downhole tools that steer the bit. This paper proposes a model of borehole propagation that can be used not only to predict the bit trajectory, here restricted to a vertical plane, but also to assess the conditions leading to abnormal ...
Luc Perneder +2 more
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Factors influencing the performance of shallow Borehole Heat Exchanger
Energy Conversion and Management, 2019Borehole Heat Exchanger is one of the main elements of Ground-Coupled Heat Pump and its performance is directly related to the heat pump Coefficient of Performance.
F. Tang, H. Nowamooz
semanticscholar +1 more source
The Leading Edge, 2010
We now understand the electrical double layer that exists between the minerals that form the rock matrix and the bulk electrolyte which saturates the pores of the rock, at least in the steady state. It is the presence of this double layer that allows the link between the electrical properties and the fluid-flow properties of the rock to exist.
Paul W.J. Glover, Matthew D. Jackson
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We now understand the electrical double layer that exists between the minerals that form the rock matrix and the bulk electrolyte which saturates the pores of the rock, at least in the steady state. It is the presence of this double layer that allows the link between the electrical properties and the fluid-flow properties of the rock to exist.
Paul W.J. Glover, Matthew D. Jackson
openaire +1 more source
, 2020
This paper proposes numerical unsteady heat transfer model that predicts the transient heat transfer in the double U-tube borehole heat exchanger (BHE) where the U-tubes can operate with either different or equal mass flow rate and inlet fluid ...
E. Kerme, A. Fung
semanticscholar +1 more source
This paper proposes numerical unsteady heat transfer model that predicts the transient heat transfer in the double U-tube borehole heat exchanger (BHE) where the U-tubes can operate with either different or equal mass flow rate and inlet fluid ...
E. Kerme, A. Fung
semanticscholar +1 more source
Energy and Buildings, 2019
Ground source heat pumps (GSHPs) use sustainable technology and renewable geothermal energy to exchange heat between the ground and the interior of residential, industrial, and commercial buildings.
Lulu Liu +4 more
semanticscholar +1 more source
Ground source heat pumps (GSHPs) use sustainable technology and renewable geothermal energy to exchange heat between the ground and the interior of residential, industrial, and commercial buildings.
Lulu Liu +4 more
semanticscholar +1 more source
Geothermics, 2019
In this paper, the thermal and hydrodynamic performance of the coaxial borehole heat exchanger (CBHE) with different diameters ratio, during heat injection into the ground are investigated. For this purpose, the energy and Reynolds Averaged Navier-Stokes
Soleiman Iry, R. Rafee
semanticscholar +1 more source
In this paper, the thermal and hydrodynamic performance of the coaxial borehole heat exchanger (CBHE) with different diameters ratio, during heat injection into the ground are investigated. For this purpose, the energy and Reynolds Averaged Navier-Stokes
Soleiman Iry, R. Rafee
semanticscholar +1 more source
Resistivity Borehole Imaging in Challenging Borehole Environments
GEO 2010, 2010Until recently, the acquisition of resistivity borehole image data from well bores less than 6” in diameter has been impossible, due to the size of conventional borehole imaging tools currently available on the market. In addition, conventional deployment methods limit efficient rig time utilization and ultimately lead to higher risk and costs ...
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