Results 281 to 290 of about 140,868 (311)
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AIJR Proceedings, 2022
Rock breaking by drill and blast using chemical explosives has been a dominant method in construction. However, blasting is hazardous and risky in nature: it involves the use of Category 1 Dangerous Goods; and it induces ground vibration and risks of fly rocks and air over pressure.
G X Guan +4 more
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Rock breaking by drill and blast using chemical explosives has been a dominant method in construction. However, blasting is hazardous and risky in nature: it involves the use of Category 1 Dangerous Goods; and it induces ground vibration and risks of fly rocks and air over pressure.
G X Guan +4 more
openaire +1 more source
SPE Drilling & Completion, 2022
Summary Aiming at the difficulty of penetration in hard-plasticity formation represented by the Mahu oil field, a new type of chord-edge cutter is proposed. Through theoretical derivation and quantitative analysis of specific unit pressure (SUP) and breaking area, the penetration and rock-breaking area of the chord-edge cutter are ...
Bo Yang +4 more
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Summary Aiming at the difficulty of penetration in hard-plasticity formation represented by the Mahu oil field, a new type of chord-edge cutter is proposed. Through theoretical derivation and quantitative analysis of specific unit pressure (SUP) and breaking area, the penetration and rock-breaking area of the chord-edge cutter are ...
Bo Yang +4 more
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Abu Dhabi International Petroleum Exhibition & Conference, 2020
Abstract The current radial well operation technology can not adapt to high temperature, and the long tripping period and low drilling efficiency in deep well conditions.According to the characteristics of abrasive jet, a new radial drilling method is proposed in this paper, in which the abrasive jet is conveyed to the underground by CT (
Zhi Chen +4 more
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Abstract The current radial well operation technology can not adapt to high temperature, and the long tripping period and low drilling efficiency in deep well conditions.According to the characteristics of abrasive jet, a new radial drilling method is proposed in this paper, in which the abrasive jet is conveyed to the underground by CT (
Zhi Chen +4 more
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INNOVATIVE APPROACHES TO DESIGNING HIGHLY EFFICIENT ROCK-BREAKING TOOL
MINING INFORMATIONAL AND ANALYTICAL BULLETIN, 2017A.Ya. Tretyak +3 more
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An Optimization Methodology of Cutter-Spacing for Efficient Mechanical Breaking of Jointed Rock Mass
Rock Mechanics and Rock Engineering, 2022Kanglei Song +3 more
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Effect of impact impulse parameters on rock breaking efficiency
Soviet Mining Science, 1973O. D. Alimov, A. F. Lisovskii
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59th U.S. Rock Mechanics/Geomechanics Symposium
ABSTRACT: High-pressure jet drilling technology is an efficient and clean drilling speed increase technology, which has been widely used in middle and upper strata drilling. However, with the global oil and gas exploration and development gradually into deep water and deep depth, the high confining pressure ...
Jiawei Liu +5 more
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ABSTRACT: High-pressure jet drilling technology is an efficient and clean drilling speed increase technology, which has been widely used in middle and upper strata drilling. However, with the global oil and gas exploration and development gradually into deep water and deep depth, the high confining pressure ...
Jiawei Liu +5 more
openaire +1 more source
Numerical study on rock breaking efficiency of TBM with the consideration of pre-slotting
2022Jianjun Ma +4 more
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