- Downhole Drilling Motor
- 2017-01-15 04:48
- Downhole Drilling Motor 1). API standard; 2). Type:5LZ120*7.0V,5LZ120*7.0(II),etc.;
- Hydraulic Pressure Damping Load
- 2016-10-30 10:02
- Hydraulic Pressure Damping LoadNera Hydraulic Pressure Damping Load is well-structured and practical, achieced the Natio
- floating valve
- 2016-10-22 15:35
- Floating valve is a new-style blowoutpreventer within the drill. The valve is open through which the drill fluid can cir