A

attitude

D

deviated drilling	deviation survey	directional drilling	dropoff gun
deviation	dip correction	drillpipe conveyed	drop-off gun

E

error

F

flow loop

G

gamma ray densitometer

gradiomanometer

H

horizontal drilling

I

inclination

M

multishot survey

N

nonideal gas

nuclear fluid densimeter

R

radius of curvature

repeatability

reproducibility

S

single shot survey

single-shot survey

streamer feathering

T

terrain correction

tortuosity

true stratigraphic thickness

U

uncertainty

V

vertical resolution

vertical response