我国油套管特殊螺纹接头的发展现状

近年来我国各钢管加工企业非常重视特殊螺纹接头油套管的开发，通过引进国外专利或者自主开发，设计出了一些特殊螺纹接头，但与国外产品相比，国内特殊螺纹接头的性能和品种规格还存在不小差距。介绍了特殊螺纹接头的结构特点，分析了我国特殊螺纹接头的研究开发现状，指出了存在的一些问题，可为我国开发特殊螺纹接头油套管提供参考。

Current Development Situation of the Special Thread Connection for Tubing/Casing

Many steel pipe manufacturers in China have paid great attention to the production of the tubing/casing with special thread connection these years.Some special thread connections have been designed through introducing foreign patent or self-developing,however,there is great difference in performance and specification while comparing with foreign products.This paper introduced structure characteristics of the special thread connection,and also summarized current studying and developing situation,as well as points out existent problems,which can provide reference for national developing of tubing/casing with special thread connection.