Research and Application of Mining-Induced Fracture Evolution and the Mechanism of Pressure Relief Gas Migration and Storage in Overlying Strata during Soft Rock Protective Layer Mining. [PDF]
ACS OmegaCheng X, Yang Y, Zhao G, Chen Y.
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Air leakage characteristics and comprehensive prevention of goaf side retained roadway of fully mechanized mining faces in Qincheng coal mine. [PDF]
Sci RepLuo X +5 more
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How I do it: inside-out bony window design in the retrosigmoid suboccipital approach. [PDF]
Acta Neurochir (Wien)Wang Z, Jiang N, Xie Y, Li X.
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Bioinspired Drilling for Extraterrestrial Applications. [PDF]
Biomimetics (Basel)Battsengel GE +3 more
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Scientific American, 1994 P(論文)Directional Drilling (DD) technology can be used in deep glacier boreholes to obtain additional ice cores from any depth and create supplemental boreholes for geophysical research on glacier ice properties under natural conditions.
Kelley,J.J., Koci,B.R., Zagorodnov,V.S.
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The Offshore Directional Drilling Advisor: An Expert System for Directional Drilling Optimization
SPE Annual Technical Conference and Exhibition, 1990ABSTRACT ODDA is an expert system designed to assist the drilling engineer, at the drilling site, in the engineering base or in the research center during the 4 functional phases of his work. Early planning phase, for designing the number and position of the different platforms or well clusters.
M.H. Amara, B. Martin
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Status and Development of Directional Drilling Technology in Coal Mine [PDF]
Procedia Engineering, 2014 By reviewing the development status of the Chinese directional drilling technology in coal mine in recent years, the authors described the performance characteristics and R & D direction of directional drilling equipment at home and abroad, and analyzed ...
Yao Ningping +7 more
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Directional Drilling with Casing
SPE/IADC Drilling Conference, 2003Abstract Drilling with casing has proven to be an effective method of reducing drilling costs and solving drilling problems. Most of the current Casing Drilling* activity is focused on drilling vertical wells, but interest in directional wells is increasing as the benefits of Casing Drilling in straight holes are demonstrated.
Tommy Warren +2 more
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Vertical Drilling Technology: A Milestone in Directional Drilling
Proceedings of SPE/IADC Drilling Conference, 1993ABSTRACT The Continental Deep Drilling Program of the Federal Republic of Germany (KTB) is a fundamental research project to investigate the physical and chemical conditions and processes in the deep continental crust. To meet the geoscientific goals, it is necessary to drill an ultra deep borehole with a target depth of 10000 m.
Claus Chur, Joachim Oppelt
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