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Influence of Eccentrically Located Drilling String in the Well Bore Over Cleaning Capabilities of a Wellbore

Received: 20 December 2016    Accepted: 10 January 2017    Published: 6 February 2017
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Abstract

It has been analyzed solution to the problem of definition eccentric location of the drill string in the hole using analytical studies and modern systems of mathematical computer modeling. Practical implementation of technological problem solution was represented as calculated parameters of the formation and changes in the area of stagnant zones in the cross section of the annular space hole in certain baseline characteristics of the process of washing. As a result, studies have found that at lower eccentric placement of both direct and deformed drill string in the well drilling mud flow looks like sickle core flow. The maximum speed of mud while inside the nucleus, and the minimum - in the contact zones flexible pipe and the borehole wall. This change dependencies hydraulic pressure loss pumping mud pump flow rate and distribution of nuclei along the axis of the drill string at its eccentric location in the borehole. It has been determined the conditions of dead mud zones formation in the annular space and offered solutions to solve this problem.

Published in Petroleum Science and Engineering (Volume 1, Issue 1)
DOI 10.11648/j.pse.20170101.13
Page(s) 10-16
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Annular Space, Rinsing Well, Dead Mud Zone, Mud

References
[1] Kovalev A. V., Ryabchikov S. Y. (2015) Prolemy gidrodinamicheskikh sposobov byreniya skvazhin I osnovnye napravleniya [Problems of hydrodynamic methods of well drilling and basic directions of their solution] Tomsk polytechnical university, 3: 6-12.
[2] Chudyk I. I., Kovbasyuk, Yatsenko T. V. (2012) Problemy I shlyakhy efektyvnoi modernizacii procesu promyvannya sverdlovyny [Problems and ways of energy efficient modernization of washing out process of a well] National University of Oil and Gas, 2: 46-53.
[3] Rukavitsyn Y. V., Zhuravlev A. G. (2013) Sovershenstvovanie tekhnologii bezopasnogo stroitelstva glubokikh skvazhin na osnove optimizatsii zaboinykh parametrov byreniya [Improvement of safety deep well construction technology on a basis of optimization bottomhole drilling parameters], Oil and gas wells construction, 3: 4-7.
[4] Vytyaz O. Y. Chudyk I. I. (2015) Study of the effects of drilling string eccentricity in the borehole on the quality of its cleaning. Theoretical and practical solutions of mineral resources mining, 3: 472–477.
[5] Kravchuk M. V. (2015) Analiz rezervov pri realizacii gidromonitornoy promyvki [Analyse of reserves while performance of jet washing out of a well], Oil and gas wells construction, 2: 15-18.
[6] Vyshegorodtseva G. I. (2015) Puti povysheniya efektivnosti ochistki zaboya pri burenii sharoshechnymi dolotami [Methods of bottomhole wasing out improvement while drilling whith a help of cone bits], Oil and gas wells construction, 6: 12-17.
[7] Dobyk Y. A. (2016) K voprosy technologicheskogo obespecheniya ochistki stvola gorizontalnoy skvazhiny ot shlama v procese byreniya [Regarding technological support of bottomhole washing out of horizontal well while drillling], Oil and gas wells construction, 5: 12-16.
[8] Dobyk U. A. (2017) Sovremennye metody kontrolya kachestva ochistki stvola skvazhiny [Modern methods of well washing out quality control], Oil and gas wells construction, 1: 16-20.
[9] Korchagin P. N., Korchagin D. N. (2012) Optimizaciya gidravliki bureniya glubokikh ckvazhin pri byrenii dolotami PDC [Optimization of well drilling hydraulic while using PDC bits], Drilling and Oil, 3: 45-48.
[10] Alexandrov S. S., Lugumanov M. G. (2013) Regulirovanie rezhima ochstki skvazhiny v procese byreniya [Management of wellbore washing out process while well drilling], Drilling and Oil, 2: 32-35.
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  • APA Style

    Igor Chudyk, Oleg Vytyaz, Volodymyr Hrymaniuk, Andrii Pastukh. (2017). Influence of Eccentrically Located Drilling String in the Well Bore Over Cleaning Capabilities of a Wellbore. Petroleum Science and Engineering, 1(1), 10-16. https://doi.org/10.11648/j.pse.20170101.13

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    ACS Style

    Igor Chudyk; Oleg Vytyaz; Volodymyr Hrymaniuk; Andrii Pastukh. Influence of Eccentrically Located Drilling String in the Well Bore Over Cleaning Capabilities of a Wellbore. Pet. Sci. Eng. 2017, 1(1), 10-16. doi: 10.11648/j.pse.20170101.13

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    AMA Style

    Igor Chudyk, Oleg Vytyaz, Volodymyr Hrymaniuk, Andrii Pastukh. Influence of Eccentrically Located Drilling String in the Well Bore Over Cleaning Capabilities of a Wellbore. Pet Sci Eng. 2017;1(1):10-16. doi: 10.11648/j.pse.20170101.13

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  • @article{10.11648/j.pse.20170101.13,
      author = {Igor Chudyk and Oleg Vytyaz and Volodymyr Hrymaniuk and Andrii Pastukh},
      title = {Influence of Eccentrically Located Drilling String in the Well Bore Over Cleaning Capabilities of a Wellbore},
      journal = {Petroleum Science and Engineering},
      volume = {1},
      number = {1},
      pages = {10-16},
      doi = {10.11648/j.pse.20170101.13},
      url = {https://doi.org/10.11648/j.pse.20170101.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.pse.20170101.13},
      abstract = {It has been analyzed solution to the problem of definition eccentric location of the drill string in the hole using analytical studies and modern systems of mathematical computer modeling. Practical implementation of technological problem solution was represented as calculated parameters of the formation and changes in the area of stagnant zones in the cross section of the annular space hole in certain baseline characteristics of the process of washing. As a result, studies have found that at lower eccentric placement of both direct and deformed drill string in the well drilling mud flow looks like sickle core flow. The maximum speed of mud while inside the nucleus, and the minimum - in the contact zones flexible pipe and the borehole wall. This change dependencies hydraulic pressure loss pumping mud pump flow rate and distribution of nuclei along the axis of the drill string at its eccentric location in the borehole. It has been determined the conditions of dead mud zones formation in the annular space and offered solutions to solve this problem.},
     year = {2017}
    }
    

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    UR  - https://doi.org/10.11648/j.pse.20170101.13
    AB  - It has been analyzed solution to the problem of definition eccentric location of the drill string in the hole using analytical studies and modern systems of mathematical computer modeling. Practical implementation of technological problem solution was represented as calculated parameters of the formation and changes in the area of stagnant zones in the cross section of the annular space hole in certain baseline characteristics of the process of washing. As a result, studies have found that at lower eccentric placement of both direct and deformed drill string in the well drilling mud flow looks like sickle core flow. The maximum speed of mud while inside the nucleus, and the minimum - in the contact zones flexible pipe and the borehole wall. This change dependencies hydraulic pressure loss pumping mud pump flow rate and distribution of nuclei along the axis of the drill string at its eccentric location in the borehole. It has been determined the conditions of dead mud zones formation in the annular space and offered solutions to solve this problem.
    VL  - 1
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Author Information
  • Department of Drilling of Oil and Gas Wells, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine

  • Department of Drilling of Oil and Gas Wells, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine

  • Department of Drilling of Oil and Gas Wells, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine

  • Department of Drilling of Oil and Gas Wells, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine

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