A.D.	assistant driller
AAODC	American Association of Oilwell Contractors
AAPG	American Association of Petroleum Geologists
abandon	to cease producing oil and gas from a well
absolute permeability	measure of the ability of a single fluid such as water, gas or
accumulator drum
acetic acid
achromatic
acidation
acidic	relating to acid
acidize	to treat oil bearing limestone
acrid fracture	to part or open fractures
Ad Hoc Subcommittee for Naturally Occurring Low Level Radioactive Material
adiabatic	refers to change in which there is no gain or Ioss of heat
adjustable choke	choke used to vary flow
AFE	authorization for expenditure
aggregate
AIMME	American Association of Mining and Metallurgical Engineers
AIPG	American Institute of Professional Geologists
air	actuated powered by compressed air
air drilling	drilling with compressed air
air hoist
ALARA	as low as reasonably achievable
alkyl lead
Alyeska Pipeline Service Company	built Trans Alaska Pipeline
American Petrofina
AMI	area of mutual interest
AMIA	area of mutual interest agreement
Amoco Exploration & Production Company
angle of deflection	angle expressed in degrees
annular blowout preventer	large valve
annular space	space surrounding cylindrical object within a cylinder
annulus	space between casing and wall of wellbore
anomoly, anomolous
anticline, anticlinal	arched, inverted trough configuration
API	American Petroleum Institute
API Environmental Biology Committee
API Soil & Groundwater Technical Task Force
API VADSAT model (software)
apomecometer	surveying instrument
aquifier
ARAMCO	Arab American Oil Company
arc welding
ARCO	Atlantic Richfield Company
areal	area
ARIES	software
Aruba	island off Venezuela
Ashland Oil Company
ASME	American Society of Mechanical Engineers
asphaltic pyrobitumens	harder and more infusible than asphaltites
asphaltites	hard, solid hydrocarbons
ASSE	American Society of Safety Engineers
associated reservoir	gas is present in association with oil & vice versa
B.P. Environmental Journal
babbit
back off	unscrew one threaded piece
back up	hold one section while another is screwed into or out of it
bail	cylindrical steel bar
bailer	cylindrical container
bailing line	cable
Baker Hughes Drilling Company
Baker packer
balance plug
barite	barium sulfate {BaSO}
Barite	the company that makes it
barium strontium sulfate
barium sulfate	chemical combination of barium, sulfur and oxygen
Baroid Petroleum Services Division NL
Basic Chemicals Technology Center
basket sub	a fishing accessory run above a bit or mill to recover metal or junk in a well
Bass Enterprises, Bass Enterprises Production Company
bed	layer of earth or rock
BEIR I, II, III, IV, V
BEIR report	Biological Effects of Ionizing Radiation report
belt	flexible band or cord
bentonite	clay soil
Bentonite	a gel chemical
BFPB	barrels of fluids per day
Billy Pugh basket, Billy Pugh net
Billy Pugh basket, Billy Pugh net
bit	cutting tool
bit breaker	heavy plate that fits in rotary table and holds drill bit
bit record	a report on each bit
bitt	fixture on a boat
bitumen	hydrocarbons of pyrogenous origin
blackjack
blind ram	part of blowout preventer
block	an assembly of pulleys
block outline map
blooey line	discharge pipe
blowout	uncontrolled flow of gas, oil or other well fluids
Bohr theory
boll	weevil inexperienced rig worker
bomb	Thick walled container to hold samples of oil or gas
boomer	transient oilfield worker
BOP	blowout preventer valve installed at wellhead to prevent escape of pressure
borehole	the wellbore
bottomhole	lowest part of well
bottomhole choke	device with restricted opening to control rate of flow
box	female section of a tool joint
Boyle's law
Bradenhead technique
brake	device for arresting the motion of a mechanism
break out	unscrew one section of pipe from another
breakout cathead	device attached to shaft of drawworks
breakout tongs	tongs used to unscrew one section of pipe from another
bridge plugs
bring in a well	complete a well
broaching tool
bronc	new driller recently promoted from helper
Bruening bearings
BS&W	basic sediment and water
Btu	British thermal unit
buck up	tighten up a threaded connection
bull wagon
bull wheel	wooden spool
bullet perforator	tubular device
bullheading	pumping fluids down annular space
bullplug, bullplugged, bullplugging
BULLWINKLE (Shell Oil rig)
bunker C fuel oil
BWTR	brine water
C. H. Fenstermaker & Associates, Inc. (land surveyors)
C.E. NATCO
C.P.	casing point
cable	rope of wire, hemp or other strong fibers
cable	tool drilling
caisson
calcium bromide, calcium chloride
caliper logging	operation to determine diameter of wellbore
camlock
cantilever beam
cap rock	impermeable rock overlying oil or gas reservoir
cased	pertaining to a wellbore in which casing is run and cemented
cased hole	wellbore in which casing has been run
casing	steel pipe placed in well as drilling progresses
casing centralizer	device secured around casing to center it in hole
casing coupling	tubular section of pipe
casing potential log
casing shoe	guide shoe
casing string	entire length of all joints of casing
casing tube annulus
casinghead	heavy flanged fitting
cat cracker
catalytic heavy ends
catalytic light ends
catalytic light ends; heavy ends
catch samples	obtain cuttings for geological information
cathead	Spool shaped attachment on a winch
cathode, cathodic
catline	hoisting line powered by cathead
catwalk	a place to walk
caving