Oil pipe

April 3, 2020

API 5CT K55 Casing Pipe for Algeria Client

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and […]
September 8, 2021

Damage and repair of oil and gas well casing

Oil casing is the lifeline to maintain the operation of oil wells. Due to different geological conditions, the downhole stress state is complex, and the combined action of tensile, compressive, bending and torsion stresses on the pipe body, which puts forward higher requirements on the quality of the casing itself. […]
November 8, 2021

Basic knowledge about oil pipeline

Basic knowledge about oil pipeline 1. Explanation of special terms related to petroleum pipeline API: It is the abbreviation of American Petroleum Institute in English, and Chinese means American Petroleum Institute. OCTG: It is the abbreviation of Oil Country Tubular Goods in English, which means special oil pipes in Chinese, […]
December 2, 2021

Terms, definitions, symbols and abbreviations for tubing and casing

Terms, definitions, symbols and abbreviations 1.1 Terms and definitions This International Standard adopts the terms and definitions listed in the heat treatment operation section of ASTM A941 and below. 1.1.1 accessory material Seamless standard casing or oil pipe, seamless thick-walled pipe or mechanical pipe, bar material or hot forged material […]
February 28, 2022

Various test procedure rules for tubing and casing

10.4 Tensile test 10.4.1 Stress release temperature For the purpose of tensile test frequency requirements, stress-relief tempered tubes are considered to have not been “heat-treated” when the stress-relief temperature is 56°C (1000°F) below the final temper temperature. 10.4.2 Furnace—Controlled Tensile Test—Group 1, 2, 3 For each heat of steel produced […]
June 17, 2022

Classification and function of casing

Casing Classification and function of casing Casing is the steel pipe that supports the wall of oil and gas wells. Several layers of casing are used for each well according to different drilling depths and geological conditions. Cement cementing should be used after the casing is run down the well. […]