Development and Strength Verification of Hydraulic Power Tongs for Strongly Bonded Oil Tubing Makeup and Breakout

Wei Luo; Ning Lai; Li Wang; Gang Yin; Lei Yang; Lumei Huang; Shasha Jia; Xiaolin Luo

doi:10.6919/ICJE.202506_11(6).0001

Authors

Wei Luo
Ning Lai
Li Wang
Gang Yin
Lei Yang
Lumei Huang
Shasha Jia
Xiaolin Luo

DOI:

https://doi.org/10.6919/ICJE.202506_11(6).0001

Keywords:

Strongly Bond Tubing Buckle; Breakout; Hydraulic Power Tong; Strength Verification.

Abstract

With the development of oil and gas fields extending to deep wells, ultra-deep wells and complex formations, the bonding phenomenon of tubing buckles is becoming more and more serious. The traditional hydraulic shackle pliers are difficult to meet the demand of high torque, and the knocking auxiliary shackle has high risk and high labor intensity. For this reason, this paper designs a release power tong that can squeeze the strong bonding tubing buckle. By squeezing the strong bonding tubing buckle, the bonding force of the tubing buckle is reduced to solve the difficult problem of strong bonding tubing buckle release. The correctness of the scheme is verified by the experiment of tubing extrusion and unloading, and the extrusion load is determined to be 25 t. The structure of the extrusion device was designed, and the strength verification and structural optimization were carried out by finite element method to verify its feasibility. This study not only improves the unloading speed and unloading efficiency of strongly bonded tubing buckles, but also is of great significance to ensure the safe production of oil and gas fields.

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