摘要
牙轮钻头是使用最广泛的一种钻头,在井底破岩中起着主导作用。由于钻井需求不断加大,钻井难度不断提高,对旋转轴密封件提出了耐高温、耐高压、适应高速和长寿命等一系列苛刻的要求。文章梳理了牙轮钻头密封件国内及国际专利申请趋势,对该技术领域的国内外申请人以及全球申请国家进行数据提取和分析,列出国内外主要申请人和国外主要申请国家,展望了该领域未来可持续发展的空间和方向。
Roller bit is the most widely used bit, plays a dominant role in the bottom-hole rock breaking. Due to the increasing demand of drilling and the drilling difficulty , put forward a series of stringent requirements on rotation axis like high temperature resistance, high pressure resistance , high speed adaptability and long life and so on. This paper reviews domestic and international patent application trend , make some data extraction and analysis of domestic and foreign applicants and global application countries ,make a list of major domestic and foreign applicants and the main foreign countries , look forward to the future of sustainable development space and direction in this field.
出处
《江苏科技信息》
2015年第15期71-73,共3页
Jiangsu Science and Technology Information
关键词
牙轮钻头
密封件
专利申请状况
技术革新
roller bit
sealing element
patent application status
technical innovation
