25 July 2017
A record that describes each formation encountered and lists the drilling time relative to depth, usually in 5 to 10-ft. (1.5 to 3-m) intervals.
18 July 2017
A lease or a number of leases of adjoining tracts of land that constitute a unit of acreage sufficient to justify the expense of drilling a […]
18 July 2017
An individual or group that owns a drilling rig or rigs and contracts services for drilling wells.
18 July 2017
A driller, a derrickman, and two or more helpers who operate a drilling or workover rig for one tour each day.