(aut - adhe
- (automatic) load controller
- (casing) centralizer
- (casing) liner hanger setting depth
- (magnetic-tape) recording system
- (mine) cuttings
- (nuclear) induced activity
- (photographic) interpretation
- (pipe) coil
- (process) casing
- (quality monitoring, check, inspection) control
- (specific conductance) conductivity
- (to be) live current
- (tractor); crawler caterpillar
- 0°C isotherm
- 100-percent water saturated formation resistivity
- 14 MeV neutrons
- 14-MeV neutron fission
- 2-dimensional curvature
- 4-p; four-p detector
- 90-degree phase difference
- 90-degree phase shift
- a b dipole
- a electrode
- A horizon
- A layer
- A rod
- a versus b curve; plot of a versus b; plot of a as a function of b
- A-door
- A-frame; A-mast brace
- A-mast
- a.c. (alternating current)
- ab distance
- AB line
- abandoned heading
- ABC system
- Abel closed tester
- Abney level
- abnormal dip
- abnormal pressure
- abnormal pressure formation
