Stress Distribution Formula of Threads Casing Joint Under Symmetrical Load

Authors

Tong Hua, 1. Mechanical and Electrical Engineering of Southwest Petroleum University, Chengdu 610500, China; ;
Xiaohong Tang, 1. Mechanical and Electrical Engineering of Southwest Petroleum University, Chengdu 610500, China; ;
Xiaohua Zhu, 1. Mechanical and Electrical Engineering of Southwest Petroleum University, Chengdu 610500, China; ;
He Huan, 2. Sinopec Southwest Branch,Nanchong 637400, China; Material Supply Branch of PetroChina Southwest Oil & Gasfield Company, Chengdu 610051, China;;
Haoran Tao

Abstract

Abstract: While itis difficult tomeasure thestress distribution of casing threads underground without calculation by finite element method. Here assumes a deformation compatibility factor U_x, use an initial calculation to represent the thread stress, f(x)=f₀U_x, and applythe ABAQUS finite element software to calculate the stress distribution of the threads under different symmetrical loads. Obtain the expressions of U_x by curve fitting, and get the threads stress calculation formula to provide an intuitive, fast and accurate method of calculation for the site. Providea theoretical reference for development and manufacture of casing joint. The research indicates: the deformation compatibility factor of casing threads don’t change with the size of the load under a singlesymmetrical load, but it has a small amount of volatility under the complex symmetrical load.

Recommended Citation

Hua, Tong; Tang, Xiaohong; Zhu, Xiaohua; Huan, He; and Tao, Haoran (2019) "Stress Distribution Formula of Threads Casing Joint Under Symmetrical Load," Journal of System Simulation: Vol. 30: Iss. 10, Article 50.
DOI: 10.16182/j.issn1004731x.joss.201810050
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss10/50

First Page

4014

Revised Date

2016-05-19

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201810050

Last Page

4020

CLC

TP391.9

Recommended Citation

Tong Hua, Tang Xiaohong, Zhu Xiaohua, He Huan, Tao Haoran. Stress Distribution Formula of Threads Casing Joint Under Symmetrical Load[J]. Journal of System Simulation, 2018, 30(10): 4014-4020.

DOI

10.16182/j.issn1004731x.joss.201810050