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油层套管是油井用管的重要品种之一。它要求有良好的射孔性能。我国包钢生产的油层套管射孔性能不合格,不能满足油田的要求。为了搞清楚油层套管射孔性能不合格的原因,我们用阿根廷、美国进口的以及包钢生产的套管进行了宏观检查、化学成份分析、力学检验、金相观查、射孔解剖等。本文基本上阐明了射孔裂纹的成因以及影响射孔性能的工艺因素,从而找出了改善国产油层套管射孔性能的工艺措施,为提高国产油层套管的使用性能提供了一定的科学论证。
Reservoir casing is one of the important varieties of oil well pipe. It requires good perforating performance. The casing perforation produced by Baotou Steel in our country is unqualified and can not meet the requirement of oilfield. In order to find out the cause of unacceptable perforation performance of oil casing, we conducted macroscopic inspection, chemical composition analysis, mechanical inspection, metallographic observation and perforation anatomy, etc., on the casing imported from Argentina and the United States and from Baotou Steel. This paper basically clarifies the cause of perforation cracks and the process factors that affect perforation performance, so as to find out the technological measures to improve the perforation performance of casing made in China and provide certain scientific proof for improving the serviceability of domestic casing. .