发明名称 CENTRALIZER
摘要 A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material.
申请公布号 US2013292183(A1) 申请公布日期 2013.11.07
申请号 US201113978369 申请日期 2011.01.07
申请人 EIDEM MORTEN;WELTZIN TORE;GRINDHAUG GAUTE;ABDOLLAHI JAFAR;STATOIL PETROLEUM AS 发明人 EIDEM MORTEN;WELTZIN TORE;GRINDHAUG GAUTE;ABDOLLAHI JAFAR
分类号 E21B17/10 主分类号 E21B17/10
代理机构 代理人
主权项
地址