Service Conditions and Current R & D Situation of Oil Tubing and Casing（PartⅠ）
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摘要: 我国油井管制造厂和油田用户密切合作,结合油田实际,联合研发攻关,极大地推进了油井管的国产化进程,使油套管产量、品种规格和质量实现根本性转变。简要介绍了油套管柱的力学、环境服役条件及油套管失效的类型及原因。综述了油套管产品研发的进展和现状,建议进一步加强非API钢级、特殊螺纹连接油套管和特殊用途油井管的开发,提出应解决的突出技术问题并注意评价标准的建立和评价方法的科学性。Abstract: Taking the actual circumstances of oil fields into consideration,domestic OCTG manufacturers and the end-users have been closely cooperating in R & D activities,which has tremendously speeded up the localization pace of OCTG production,and brought about radical improvement on production capacity,types and sizes as well as quality of the oil tubing and casing.Briefed here in the article are mechanical and environmental service conditions of tubing and casing columns and types of and causes for failures of the oil tubing and casing.Also presented are the progress and current situation relating R & D of oil tubing and casing products.It is proposed that development of non-API steel grade tubing and casing with premium thread connections and special-purposed OCTG should be strengthened.Critical technical issues that need to be solved are pointed out.Finally it is emphasized to build up relevant evaluation criteria and methods in a rather scientific way.
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