Results 241 to 250 of about 5,798 (299)
Plane-Stress Measurement in Anisotropic Pipe Walls Using an Improved Tri-Directional LCR Ultrasonic Method. [PDF]
Sensors (Basel)Li Y +6 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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Overview on vertical and directional drilling technologies for the exploration and exploitation of deep petroleum resources [PDF]
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2016 The vertical and directional drilling are the key technologies for the exploration and exploitation of oil and gas resources in deep formations. Meanwhile, they are also the very important ways to exploit deep geothermal energy and geo-resources, conduct
Tianshou Ma, Ping Chen, J Zhao
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Status and Development of Directional Drilling Technology in Coal Mine
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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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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Attitude control system for directional drilling bottom hole assemblies [PDF]
IET Control Theory and Applications, 2012 A general approach for the attitude control of directional drilling tools for the oil and gas industry is proposed. The attitude is represented by a unit vector, thus the non-linearities introduced by Euler angle representations are avoided.
James F Whidborne
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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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Modeling of Observability During In-Drilling Alignment for Horizontal Directional Drilling
IEEE Transactions on Instrumentation and Measurement, 2007Navigation performance is an important factor in horizontal directional drilling. In-drilling alignment (IDA) was previously suggested to improve downhole navigation performance when utilizing an inertial navigation system (INS). It was shown that the IDA process enhances the ability to estimate INS bias and drift errors and, particularly, their ...
Efraim Pecht, Martin P. Mintchev
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SPE Deep Drilling and Production Symposium, 1979
Abstract The continuation of deep drilling has expanded the application for directional drilling to near commonplace proportions. Since 1968, there has been a steady progression of improvements in deep directional drilling tools and techniques.
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Abstract The continuation of deep drilling has expanded the application for directional drilling to near commonplace proportions. Since 1968, there has been a steady progression of improvements in deep directional drilling tools and techniques.
openaire +1 more source