18 July 2017
A coring technique in which core samples are obtained from the hole wall in a zone that has already been drilled. A hollow bullet is fired […]
10 November 2021
Two or more of the following activities being performed in close proximity, conducted under common operational control in which the activities of any one operation may […]
18 July 2017
Moving a rig from the location of a lost or completed hole preparatory to starting a new one. In skidding the rig, the move is accomplished […]