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增长着的能量需求,促进了在恶劣环境中具有优良的硫化氢腐蚀破裂抗力(SSC)和(或)压溃抗力的高强度油井管的显著发展。改进了的 Cr—Mo 钢套管的试验证明在O.2～0.3%C 钢中加入(?)1.0%Mo 和 Nb、B 即可生产出屈服强度达90000磅/英寸~2(63.3kg/mm~2)并且具有优良 SSC 抗力的钢管。复合的回归分析旨在判定各种因素对套管压溃的影响,业已得到证明的是成品管的残留应力是一个最重要的因素。本报告概述了这些特殊油井管生产工艺中的一些冶金问题。
Increasing energy needs have contributed to the remarkable development of high strength oil well tubing with excellent resistance to hydrogen sulfide corrosion cracking (SSC) and / or crushing resistance in harsh environments. The experiment of the improved Cr-Mo steel casing proved that the yield strength of 90000 lbs / in 2 (63.3 kg / l) can be produced by adding 1.0% Mo and Nb, B into 0.2-0.3% mm ~ 2) and has excellent SSC resistance steel pipe. Compound regression analysis aims to determine the impact of various factors on casing collapse. It has been shown that the residual stress in finished pipes is one of the most important factors. This report outlines some of the metallurgical issues in the production of these special oil well pipelines.