Development of Mathematical Model for Controlling Drilling Parameters with Screw Downhole Motor | Zendy

Mikhail Dvoynikov | Zendy; Andrey Kunshin | Zendy; P. I. Blinov | Zendy; В. В. Морозов | Zendy

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Development of Mathematical Model for Controlling Drilling Parameters with Screw Downhole Motor

Author(s) -

Mikhail Dvoynikov,

Andrey Kunshin,

P. I. Blinov,

В. В. Морозов

Publication year - 2020

Publication title -

international journal of engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.225

H-Index - 17

ISSN - 1728-1431

DOI - 10.5829/ije.2020.33.07a.30

Subject(s) - rotation (mathematics) , drilling , borehole , directional drilling , amplitude , mathematical model , range (aeronautics) , mechanism (biology) , control theory (sociology) , mode (computer interface) , rotational speed , engineering , measurement while drilling , mechanical engineering , acoustics , computer science , physics , aerospace engineering , optics , geotechnical engineering , control (management) , quantum mechanics , artificial intelligence , operating system

Present article results of study on possibility of increasing the efficiency of drilling directional straight sections of wells using screw downhole motors (SDM) with a combined method of drilling with rotation of drilling string (DS). Goal is to ensure steady-state operation of SDM with simultaneous rotation of DS by reducing the amplitude of oscillations with adjusting the parameters of drilling mode on the basis of mathematical modeling for SDM – DS system. Results of experimental study on determination of extreme distribution of lateral and axial oscillations of SDM frame depending on geometrical parameters of gerotor mechanism and modes ensuring stable operation are presented. Approaches to develop a mathematical model and methodology are conceptually outlined that allow determining the range of self-oscillations for SDM – DS system and boundaries of rotational and translational wave perturbations for a heterogeneous rod with an installed SDM at drilling directional straight sections of well. This mathematical model of SDM – DS system's dynamics makes it possible to predict optimal parameters of directional drilling mode that ensure stable operation of borehole assembly.

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