«Automation and Informatization of the fuel and energy complex»

Computer simulation of experimental benches to study the strength of elevator tubing gripping during workover of vertical and directional wells

UDC: 681.5:622.276
DOI: 10.33285/2782-604X-2022-8(589)-28-34

Authors:

¹ Ukhta State Technical University, Ukhta, Russia

Keywords: gripping device, tubing, elevator, jaws, experimental bench, strength calculations, computer modeling, design improvement

Annotation:

Elevators are used for running and lifting operations during the current and overhaul of wells, the design options of which are quite numerous. However, when working with directional and horizontal wells, there occur certain difficulties associated with centering of the tubing string axis relative to the axis of the well. The existing elevator designs do not take into account the specific operation of directional and horizontal wells and quickly fail, thus stimulating the importance and relevance of the problem under consideration. Recently, there has been a need to improve elevators or create new models of directional and horizontal wells. The article analyzes the strength characteristics of the existing structures of elevator gripping devices, on the basis of which the best one of them is justified as a base model. A simulation solid-state computer model of an improved elevator design for directional and horizontal wells has been developed as well as an experimental bench capable of performing full-scale modeling of the elevator gripper operation in conditions of low temperatures during lowering and lifting operations in directional and horizontal wells.

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