近几年为了开发古潜山的油层,需要打4000-6000米左右的深井,这些井大部分的井身结构设计是以尾管挂作为生产套管。2007年胜利油田在施工井中发现有5口井的技术套管被磨损或者变形,在井底压力不同的情况下,严重影响了潜山地层的油气开发。因此,套管防磨已经成为人们关注的焦点。 In recent years, in order to develop the buried hill oil reservoirs, deep wells of about 4000-6000 m need to be drilled. Most of the well structures are designed with the tail pipe hanging as a production casing. In 2007, Shengli Oilfield discovered five wells in the construction wells that were worn or deformed. Due to the different bottomhole pressures, the development of oil and gas in buried hill formations was seriously affected. Therefore, the anti-wear casing has become the focus of attention.