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The problem of interaction of rod centralizers of casing with a well wall is considered. The paper aims at studying the ways of fastening of centralizer’s ends on the parameters of its rigidity and strength. | Analytical models of contact interaction of casing centralizers with well wall Engineering Solid Mechanics 7 2019 355-366 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm Analytical models of contact interaction of casing centralizers with well wall I. Shatskyia A. Velychkovychb I. Vytvytskyib and M. Seniushkovychb a Ivano-Frankivsk Branch of Pidstryhach-Institute for Applied Problems in Mechanics and Mathematics NAS of Ukraine Department of modelling of damping systems Ukraine b Ivano-Frankivsk National Technical University of Oil and Gas Ukraine A R T I C L EI N F O ABSTRACT Article history The problem of interaction of rod centralizers of casing with a well wall is considered. The paper Received 25 December 2018 aims at studying the ways of fastening of centralizer s ends on the parameters of its rigidity and Accepted 17 June 2019 strength. Knowledge of these characteristics is necessary for the assessment of casing column drift Available online and well completion quality. For simulation of the working links of the centralizers the classical 17 June 2019 Keywords linear theory of smooth rods rigid along the axis and elastic on bending is used. Stress-strain state Casing centralizer of bow-type rod with six different variants of fastening under conditions of point contact is studied. Rod The analytical relations between the contact force and the mutual approach of the column and the Contact interaction well wall as well as the expressions for the admissible contact loads are established. The way of Stressed state fastening the rod significantly influences these characteristics in particular the fact of the presence Rigidity or absence of freedom of mutual movement of its ends along the pipe is decisive. The engineering Strength formulas which serve as two-side estimations of the rigidity and strength of the real structures of centering devices are obtained. A comparative analysis of mechanical .
