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Study on the Dual Enhancement Effect of Nanoparticle-Surfactant Composite Systems on Oil Recovery Rates. [PDF]
Nanomaterials (Basel)Li G, Huang B, Yuan Y, Fu C, Wang K.
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The improved rock breaking efficiency of an annular-groove PDC bit
Journal of Petroleum Science and Engineering, 2019Abstract To solve a major problem faced by drilling technicians, that of how to improve rock breaking efficiency in complex strata, this paper introduces a polycrystalline diamond compact (PDC) drill bit with a special structure. Static-pressure breaking tests show that the breaking work ratio of a single tooth on a ridge is much smaller than that on
Kuilin Huang, Zongliang Xie
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Experimental and simulation study on rock-breaking efficiency of disc cutters on composite rocks
International Journal of Rock Mechanics and Minings Sciences, 2022Sen Wen, Chunshun Zhang
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Efficient 3D Visual Perception for Robotic Rock Breaking
2019 IEEE 15th International Conference on Automation Science and Engineering (CASE), 2019In recent years, underground mining automation (e.g., the heavy-duty robots carrying rock breaker tools for secondary breaking) has drawn substantial interest. This breaking process is needed only when over-sized rocks threaten to jam the mine material flow.
Longchuan Niu +3 more
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A new index of rock-breaking tool efficiency
Journal of Mining Science, 2016Based on the analysis of qualitative interaction between rocks and a rock-breaking tool, a new coefficient of the tool efficiency is proposed. This coefficient makes it possible to estimate the quality of the tool impact on broken rocks and to predict energy input of rock breaking and, consequently, productivity of mining machines in specific ...
B. L. Gerike +2 more
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THE EFFECT OF ROCK BIT CUTTING STRUCTURE ON ROCK BREAKING EFFICIENCY
Proceedings of International Meeting on Petroleum Engineering, 1986ABSTRACT A study of the effect of rock bit cutting structure on rock breaking efficiency was made with full scale bits for soft to medium formations on a laboratory testing rig. An analysis of the relationship between rock breakage and cutting structure based on the drilling rate, bottom hole pattern and operating parameters revealed the
Jikang Hou, Zhaofeng Luo
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Modelling of critical fragment size and rock breaking efficiency evaluation in drilling process
Powder TechnologyHaoteng Wang, Mingming He, Pu Cheng
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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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