Results 81 to 90 of about 972,039 (207)
Energy Exploration & ExploitationTo expedite drilling operations in hard rock of coal mines, a new type of impact-shear drill bit was developed, and its mechanism of speed-up and efficiency increase was studied.
Pei Ju, Dongzhuang Tian
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EFFECT OF PDC BIT DESIGN AND DRILLING FLUID ON RATE OF PENETRATION FOR MULTI-LAYER FORMATION [PDF]
, 2014 The project focuses on the optimization of Polycrystalline Diamond Compact (PDC) drill bit design features for improvement in rate of penetration (ROP) for multi-layer formation.
BINTI MOHD HABIB, NURFATIN ADIBAH
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Optimized design and surface additive technology of PDC bit for hard rock directional drilling
, 2022 Directional long drilling is the main technical means of gas and water hazard control in coal mines, and the performance of PDC directional bit is an important factor which affects the drilling efficiency in hard rock.
Chuanliu, WANG +3 more
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Hybrid Bits Offer Distinct Advantages in Selected Roller-Cone and PDC-Bit Applications
, 2011 Summary Early concepts of hybrid drill bits go back to the 1930s, but the development of a viable drilling tool has become feasible only with the recent advances in polycrystalline-diamond-compact (PDC) cutter technology.
Rolf Pessier, Michael Damschen
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Analysis of PDC bit wobbling and drilling string buckling
, 2004 Earlier study of failure of Polycrystalline-diamond-compact (PDC) bits was attributed to "bit-whirling" theory which caused cutter chipping due to down-hole bit vibrations.
Bhagavatula, Ramkamal
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New Ridge Diamond Elements Improve PDC Bit Efficiency
, 2017 Rate of penetration is one of the key performance indicator for drilling process. PDC bits have the most efficient rock fracture mechanism: PDC cutters penetrate a rock and shear it layer by layer.
M.. Pak +3 more
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Customized Design and Application of High ROP Bit for Deep Shale Gas
Shiyou jixieAs the development scale of shale gas expands， improving the rate of penetration （ROP） of deep shale gas has become the key to improving development efficiency， and designing more targeted bit based on formation characteristics is an effective means to ...
Zhu Xiaohua +6 more
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Cutting Test Device for PDC Bit with Mixed Cutter Arrangement
Shiyou jixie, 2019 The existing PDC bit single-cutter test device is very inconvenient to adjust the parameters such as single-cutter rake angle. It is necessary to carry out frequent replacement of multiple sets of tools, which is not suitable for the mixed cutting ...
Liu Zhong +3 more
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Study on the Wear Law of PDC Bits in Conglomerate
Shiyou jixie, 2020 A simplified model of dual-cutter PDC bits was established to model how the PDC bit is being worn when drilling into dense conglomerate. Then the rock breaking process was investigated using an Archard wear model and finite element software, and how the ...
Huang Peng +4 more
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