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Model of borehole deviation in anisotropic rock

  • Mechanics and Automation of Rock Breaking
  • Published:
Journal of Mining Science Aims and scope

Conclusions

  1. 1.

    The equation of bit rotation in anisotropic rock allows the difference in directions of the bit axis and the borehole axis (the tangent ot the trajectory) to be determined.

  2. 2.

    The asymptotic approach here proposed allows the curvature and the normal to the trajectory with a specified direction of the borehole axis at the face to be determined for weakly deviated borehole trajectories. The equations of the borehole trajectory are thus determined.

  3. 3.

    Combined numerical calculation of the column equilibrium and the borehole deviation is unnecessary in the new method of describing the characteristics of the drilling-column base; instead, the solution is obtained by taking account of just a few simple parameters of the column base, determined separately by solving the problem of elastic deformation of the base of a heavy drilling column in a distorted inclined shaft.

  4. 4.

    The formulas for the curvatures and components of the normal to the borehole trajectory obtained for the case of gyrotropic rock describe the locally independent distortion of the projection of the borehole trajectory in two planes orthogonal to the bed, one of which includes the bit axis.

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Literature Cited

  1. A. G. Kalinin, Borehole Deviation [in Russian], Nedra, Moscow (1974).

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  2. A. S. Bronzov, Yu. S. Vasil'ev, and G. A. Shetler, Turbine Drilling of Inclined Boreholes [in Russian], Nedra, Moscow (1965).

    Google Scholar 

  3. M. G. Gulizade, P. Ya. Kaufman, and L. Ya. Sushon, Method of Calculating the Amplitude of Deviation of an Inclined-Borehole Shaft [in Russian], Giprotyumenneftegaz, Tyumen' (1974).

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  4. G. G. Zaripov, A. S. Gumenyuk, and V. V. Prokhorenko, “Investigation of the spatial bending of a drilling-column base assembly in an inclined-borehole shaft in order to predict its trajectory,” in: Engineering and Technology of Drilling and Petroleum Extraction at Fields in Timano-Pechorska Province [in Russian], VNIIOÉNG, Moscow (1984).

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  5. B. H. Valker and M. B. Friedman, “Three-dimensional force and deflection analysis of a variable cross section drill string,” ASME Trans. J. Press. Vess. Tech. (May, 1977).

  6. O. V. Voinov and V. A. Reutov, “Equations of bit mechanics in drilling anisotropic rock,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 2 (1991); Paper 1666 Deposited at VNIIOÉNG [in Russian], Moscow (1991).

  7. V. D. Potashnikov, Dynamic Model and Calculation of the Amplitude of Borehole Deviation in Anisotropic Rock. Paper 1159 Deposited at VNIIOÉNG [in Russian], Moscow (1985).

  8. K. K. Milheim and M. C. Apostol, “The effect of bottom hole assembly dynamics of the trajectory of a bit,” JPT,33, No. 12 (1981).

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Authors
  1. O. V. Voinov
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  2. G. S. Oganov
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  3. V. A. Reutov
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Additional information

Paper 1667 deposited at VNIIOENG, Moscow, 1988.

All-Union Scientific-Research Institute of Petroleum Technology, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 82–89, May–June, 1991.

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Voinov, O.V., Oganov, G.S. & Reutov, V.A. Model of borehole deviation in anisotropic rock. Soviet Mining Science 27, 244–250 (1991). https://doi.org/10.1007/BF02500904

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  • DOI: https://doi.org/10.1007/BF02500904

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