Stability Analysis in Determining Safety Drilling Fluid Pressure Windows in Ice Drilling Boreholes
Energies, 2018 Borehole stability analysis has been well studied in oil and gas exploration when drilling through rock formations. However, a related analysis of ice borehole stability has never been conducted.
Han Zhang +4 more
doaj +1 more source
Effect of operating temperature on direct recycling aluminium chips (AA6061) in hot press forging process [PDF]
, 2013 A method of solid-state recycling aluminum alloy using hot press forging process was studied as well as the possibility of the recycled chip to be used as secondary resources.
Ahmad, Mohd Hafizi +8 more
core +1 more source
Formula Development and Application of Wall Protection Slurry for Long-distance Horizontal Freezing Boreholes and Thorough Piles [PDF]
E3S Web of Conferences, 2020 Since complex barriers need to be passed through during the process of drilling long-distance horizontal freezing boreholes, the stability of the borehole wall at the soft and hard stratum interface is the key in controlling the deflection of the ...
Jiang Guojing +6 more
doaj +1 more source
Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]
, 2019 Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O +3 more
core +1 more source
CBM drilling technical parameter optimization methodology and software development: a case study of LUAN mining area [PDF]
Anais da Academia Brasileira de Ciências, 2021 Based on the leakage of the coalbed methane (CBM) drilling engineering practice of Luan mining area in China, the author determines the safe drilling fluid density range for the stable borehole wall based on borehole wall collapse and fracture pressure ...
YULIANG GUO +5 more
doaj +1 more source
Groundwater reinjection and heat dissipation: lessons from the operation of a large groundwater cooling system in Central London [PDF]
, 2015 The performance of a large open-loop groundwater cooling scheme in a shallow alluvial aquifer at a prominent public building in Central London has been monitored closely over its first 2 years of operation.
Birks, D. +6 more
core +1 more source
Results of the experimental research of the heat-transfer jet pressure to the rock surface during thermal reaming of the borehole [PDF]
, 2018 The performed analysis of scientific sources confirms the existence of a small number of publications devoted to the experimental research of the gasdynamics and plasmodynamics of jets used as a heat- transfer medium in the thermal ...
Potapchuk, Iryna +3 more
core +1 more source
Study on the Mechanism of Ionic Stabilizers on Shale Gas Reservoir Mechanics in Northwestern Hunan
Energies, 2019 The shale of the lower Cambrian Niutitang formation in northwestern Hunan is an ideal reservoir for shale gas. There is a close connection between borehole stability and drilling fluid in shale gas drilling.
Pinghe Sun +7 more
doaj +1 more source
Advances in Materials Science and Engineering, 2018 Because gas boreholes are easy to damage by integrated coal mining and gas exploration, based on the practice of relieving pressure in deep thin coal seams in the Huainan mining area, a multidimensional coupling numerical simulation method was used to ...
Fei Xue, Xiaowei Feng
doaj +1 more source
Increasing the Efficiency of Sealing the Borehole in Terms of Spacer Pumping Time
Energies, 2021 The tightness of a borehole is essential for its long-term durability. For this purpose, the column of the pipe is sealed with cement slurry. After contacting the slurry, mud in the borehole is removed. However, the slurry does not effectively remove the
Marcin Kremieniewski +2 more
doaj +1 more source