Abstract
The factors influencing hole deviation are extensive, they are generally divided into three kinds, the geological factor, the technical method factor and operation factor. The geological factor mainly includes the rock structures, anisotropy, the schistosity and bedding, soft and hard interbeds and occurrence and so on. The technical method factor mainly includes the deflection in hole opening, the well wall annular space, the rigidity of the bottom drilling tool assembly and deflection state and so on. The operation factor mainly is the feeding WOB. During drilling CCSD-1 Well, the strata factor and features of bottom drilling tool assembly were the important factors. Since the strata factor was unchangeable, so the reasonable bottom drilling tool assembly was mainly taken with help of the WOB control technique to prevent the hole deviation.
Translated by Yongqin Zhang.
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Notes
- 1.
Engineering logging to 5075Â m depth, the logging data of the DST wired MWD instrument were used after 5100Â m.
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© 2015 Science Press, Beijing and Springer-Verlag Berlin Heidelberg 2015
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Wang, D. et al. (2015). Well-Deviation Control Techniques for Strong Dipping Strata. In: The China Continental Scientific Drilling Project. Springer Geology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46557-8_8
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DOI: https://doi.org/10.1007/978-3-662-46557-8_8
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