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Drilling Communities

Drilling Industry Glossary

All	A	B	C	D	E	F
G	H	I	J	K	L	M
N	O	P	Q	R	S	T
U	V	W	X	Y	Z	#

Drilling Industry Glossary

All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

A
abandon	abnormal pressure	annular blowout preventer
annular pressure	annulus	azimuth

B
back off	balanced cement plug	barite
BBL or bbl	bent sub	bit size
BML	bottomhole	bottomhole assembly
bottomhole plug	bottomhole pressure (BHP)

C
cased hole	casing	casing centralizer
casing coupling (collar)	casing hanger	casing point
casing pressure	casing shoe	casing string
cement	cement additive	cement bond
cement bond survey	cementing	cementing pump
choke	choke line	coiled tubing
completion	completion fluid	concentration
conductivity	conductor pipe	crooked hole
crossover sub	crude oil	cuttings

D
daily drilling report	diamond bit	differential pressure
directional drilling	displacement fluid	doghouse
dogleg	donkey pump	doughnut
downhole motor	drill collars	drill collar sub
drilling fluid	drill pipe	drill stem
drill string	dry hole	dutchman

E
equivalent hole ID	excess - cement slurry	excess - open hole
expandable casing

F
fish	fishing	float collar
float shoe	fracture gradient	fracture pressure
friction

G
gas-cut mud	gauge hole

H
hook	hook load	horizontal drilling
hydrostatic pressure

I
inclination	inner string	intermediate casing

J
jar	joint of pipe

K
kelly	keyseat	kick
kickoff point (KOP)	kill

L
lead cement	liner	liner hanger
lost circulation

M
make up	make up a joint	measured depth (MD)
mechanical jar	mean sea level (MSL)	mud
mud cake	mud line	mud weight

N
natural gas	nozzle

O
oil-based mud	open hole

P
packer	PDC bit	pick up
pig	pore pressure	ppb
ppg	production casing	pumping schedule table

R
rabbit	rate of penetration	rathole
ream	reciprocating	riser
rotary kelly bushing (RKB)

S
shoe track (ST)	shut-in bottomhole pressure (SIBHP)	single slurry
SK	slurry	slurry yield
spacer	spaghetti	surface casing
survey

T
tail cement	tie-back liner	top of cement (TOC)
top of liner (TOL)	torque	torque and drag
total depth (TD)	traveling block	trip in
trip out	true vertical depth (TVD)	tungsten carbide

U
underbalanced drilling	unloading

W
waiting on cement (WOC)	weight indicator	weight on bit (WOB)
wellbore

Z
zone