25 July 2017
The shift of duty on a drilling rig that starts at midnight. Sometimes called the morning tour.
25 July 2017
1) the attraction exerted by the earth’s mass on objects at its surface. 2) the weight of a body. See API gravity, specific gravity.
18 July 2017
1) a short, heavy, cylindrical section of steel filled with concrete and rounded at the bottom, which is placed at the end of the casing string. […]
18 July 2017
To create holes in casing and cement set through a productive formation. A common method of completing a well is to set casing through the oil-bearing […]