Authors: O.A. Temiryaeva

Title of the article: Improving the reliability of packer sealing elements based on the results of laboratory tests

Year: 2021, Issue: 2, Pages: 74-82

Branch of knowledge: 25.00.20 Geomechanics, rock destruction by explosion, mine aerogasdynamics and mining thermal physics

Index UDK: 622.23.05

DOI: 10.26730/1999-4125-2021-2-74-82

Abstract: The design of a laboratory bench for uniaxial compression of cylindrical packer sealing elements made of elastic materials is presented. The methodology and the main conclusions based on the results of laboratory tests are described. The probable reasons for their low efficiency have been established and the main directions of modernization have been determined. The geometrical and physical parameters of the packer sealing elements of the demanded standard sizes in underground conditions have been determined. Axial compressive loads were calculated depending on the wall thickness of 40 ShA polyurethane packer sealing elements within 25% of axial deformation to seal the well Dvn = 76 mm. The obtained loads were compared with the critical ones in terms of the stability condition for long shells. The decision to reinforce a cylindrical sleeve made of soft polyurethane with a rigid spring element is substantiated. Laboratory studies of the upgraded compression sealing elements have been carried out. The photographs and research results confirming the stabilization of the cylindrical shape are presented.

Key words: well sealing directional fracturing hydraulic fracturing equipment packer sealing element

Receiving date: 23.03.2021

Publication date: 29.04.2021

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