1.1 This guide covers how direct (straight) rotary-drilling procedures with water-based drilling fluids may be used for geoenvironmental exploration and installation of subsurface water-quality monitoring devices.
Note 1: The term direct with respect to the rotary-drilling method of this guide indicates that a water-based drilling fluid is pumped through a drill-rod column to a rotating bit. The drilling fluid transports cuttings to the surface through the annulus between the drill-rod column and the borehole wall.
Product Details
- Published:
- 01/01/2018
- Number of Pages:
- 8
- File Size:
- 1 file , 170 KB
- Redline File Size:
- 2 files , 370 KB
