Published September 2026, Pg. 17-32

Section: Well drilling

UOT: 622.276.1

DOI: 10.37474/0365-8554/2026-09-17-32

Method to eliminate sticking (emergency tool release) in production string

Y.A. Ibragimov Cand. in Tech. Sc. - Azerbaijan State Oil and Industry University

Relevance is determined by the need to solve a number of scientific, practical and engineering tasks to free the drill string stuck during emergency operations and well workovers. The article provides classifications on the origin of sticking of the pipe string with particles, as well as on the peculiarity of the sticking place in the production string. Their causes and origin of emergency tool sticking, especially during tool lifting, after operation are analyzed. Methods of elimination of sticking areas are grouped as methods depending on the method of impact. Separation and recommendations are given on the use of methods for eliminating sticking, depending on the cased well bore and for reasons of tool sticking.
Objective. Evaluation and creation of the possibility of releasing emergency tools stuck with metal objects in the production casing. Methods. Acquisition of an innovative and improved method for elimination of sticking. Results and conclusions. Using a new method that does not require disconnection of the column at a very small distance above the interval of sticking and delivery of special equipment, with its subsequent lowering with a fishing tool and connection to the emergency end, the possibility of high-quality release of the emergency tool stuck by metal objects was created and provided.

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