Results 251 to 260 of about 5,798 (299)

Direct-Push Drilling

2016
Direct-push drilling technology includes methods that advance a drill by pushing, hammering, or vibrating. Although these methods do not meet the proper definition of drilling, they do achieve the same result—a borehole and, if applicable, a core. Direct-push drilling tools do not remove cuttings from the hole.
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Directional Drilling System Response and Stability

2007 IEEE 22nd International Symposium on Intelligent Control, 2007
A directionally steered drilling system has a borehole-propagation transfer function composed of spatial delay exponentials corresponding to the system's touch points with the borehole. This insight enables frequency-domain methods to be applied to the problems of steering performance.
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DIRECTIONAL DRILLING TECHNOLOGY WITH THE PARABOLA METHOD

Proceedings of International Meeting on Petroleum Engineering, 1988
ABSTRACT This paper describes the general theory and method of calculating drag force while tripping in directional wells. The application of the theory has demonstrated that the drag force created in the quadratic parabola trajectory while tripping is smaller than that of the catenary path no matter whether the dead weight of drill ...
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directional drilling

2014
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Bi-directional drilling of CFRPs: From principle to delamination suppression

Composites Part B: Engineering, 2023
Shiyu Cao, Hao Nan Li, Gangfeng Tan
exaly  

Applications of Directional Drilling

1987
The applications of directional drilling can be grouped into the following categories: (a) sidetracking; (b) drilling to avoid geological problems; (c) controlling vertical holes; (d) drilling beneath inaccessible locations; (e) offshore development drilling; (f) horizontal drilling;
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Equivalent-input-disturbance-based robust control of drilling trajectory with weight-on-bit uncertainty in directional drilling

ISA Transactions, 2022
Zhen Cai, Xuzhi Lai, Chengda Lu
exaly  

Advances in directional drilling

2021
M.Rafiqul Islam, M.Enamul Hossain
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Rheological Properties of Clay-Based Drilling Fluids and Evaluation of Their Hole-Cleaning Performances in Horizontal Directional Drilling

Journal of Pipeline Systems Engineering and Practice, 2020
Chao Kang, Ergun Kuru, Bayat Alireza
exaly  

Directional drilling

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1993
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