Research and application of near-horizontal directional coring technology and supporting drilling tools [PDF]
Meikuang AnquanIn order to solve the technical problems of accurate and fine geological exploration of mines and preliminary exploration of infrastructure projects, based on the deflection mechanism of rope coring straightening drilling trajectory, a combination of ...
Zujie ZOU
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An Estimation of Required Rotational Torque to Operate Horizontal Directional Drilling Using Rock Engineering Systems [PDF]
Journal of Petroleum Science and Technology, 2018 Horizontal directional drilling (HDD) is widely used in soil and rock engineering. In a variety of conditions, it is necessary to estimate the torque required for performing the reaming operation.
Hadi Fattahi
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Advances in Civil Engineering, 2022 To improve the prediction accuracy of tunnel excavation groundwater inflow, a prediction method based on a horizontal directional drilling geological survey is proposed.
Xialin Liu
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Problems of Directional Drilling in OKD, DPB, a.s. [PDF]
Acta Montanistica Slovaca, 2004 Application of directional drilling in underground coal mines is well known from Australia or USA, this method is used especially for gas drainage and coal seam exploration.
Jankù Miroslav, Kunz Antonín
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Seepage protection of irrigation canals using horizontal directional drilling [PDF]
Tehnički Glasnik, 2017 The paper is dedicated to the development of methods of waterproofing curtains arrangement for seepage protection of irrigation canals. The analysis of the informational sources in the field of seepage protection of irrigation canals has been conducted ...
Aleksandr Meneylyuk +3 more
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alin256/Directional-Boring: Updated interface that includes sharing replays
, 2022 Horizontal Directional Drilling ...
Daniel Shiffman +4 more
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Analysis of steering in horizontal directional drilling installations using down-hole motors [PDF]
, 2010 Horizontal directional drilling is becoming an increasingly popular technique for the installation of pipes in urbanised environments or in locations where trenching is difficult, such as under rivers or railways.
A.C.D. Royal +7 more
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Study on the abrasion property of the anvil inside a hydraulic DTH hammer fitted with horizontal oriented sliders [PDF]
Fracture and Structural Integrity, 2017 Hydraulic hammers have been extensively applied to horizontal directional well drilling in hard rock formations. However, the service life of a hydraulic hammer is still unsatisfactory due to the heavy wear or abrasion of the horizontal anvil, which ...
J. He, Q. Yin, K. Yin
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Meikuang Anquan, 2021 Taking the actual drilling of multi-branch horizontal grouting wells in coal seam floor limestone layer of the Zhaogu No. 1 mine area as the research object.
LIU Xiugang, WANG Yi, LI Peng, SONG Yubo
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Research and application of horizontal wire-line directional deviation correction while drilling
, 2021 In wire-line core drilling of horizontal holes, the rotation axis of the drilling tool is not in a straight line with its own gravity direction; with the ground hole pressurized, the drilling trajectory will be deviated due to the soft and hard formation
Chi, ZHANG +4 more
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