G

G-function

G&G

Gage Joint

Gaging Nipple

Galena

Galling

Galvanic Anode

Galvanic

Galvanic Series

Gamma Ray Log or GR

Gamma (seismic)

Gang (rig)

Gang Pusher (rig)

GAP(tm)

Gap Test (perforating)

Gardner�s Equation (seismic)

Gas Anchor

Gas Buster

Gas Cap

Gas Cap Drive

Gas Condensate

Gas Coning

Gas Cut

Gas Drive

Gas Effect (on logs)

Gas Formation Volume Factor

Gas Gravity

Gas Hydrate

Gas Injection

Gas Kick (drilling)

Gas Lift

Gas Lift Dummy

Gas Lift Mandrel

Gas Lift Side Pocket Mandrel

Gas Lift Valve

Gas Lift Valve - Injection Pressure Operated Valve (gas lift)

Gas Lift Valve - Production Pressure Operated Valve (gas lift)

Gas Liquification

Gas Lock (pump)

Gas Lock (facilities)

Gas-Oil Contact

Gas-Oil Ratio

Gas Permeation

Gas Saturation

Gas Show

Gas Spiking

Gasification

Gasket

Gasoline

Gate Valve

Gather (seismic)

Gathering Agreement (contract)

Gathering Line

Gauge (drilling)

Gauge (screens)

Gauge Carrier

Gauge Diameter

Gauge Hole

Gauge Pressure

Gauge Ring

GC

GCI

GCV

GD

Geiger-Mueller Counter

Gel

Gel Strength

Geochemistry

Geologic Cross Section

Geology

Geophone

Geophysicist

Geophysics

Geopressured

Geo-steering

Geothermal energy

Geothermal Gradient

Geothermal Wells

Geronimo Line (rig)

GIIP

Gilsonite

GIS

GIV

GJ

GL (datum)

GL (lift)

GLAD(tm)

Gland

Glass Disk

GLL (subsea)

GLM

GLR

GLV

Glycol

Glycol Dehydrators

Gneiss

GNFT

Go Devil

GOC

Gooseneck (coiled tubing)

GOR

GOS

GPF

GPG

GP/GL (subsea)

GPM

GPR

GPS

GR

Graben

Gradient

Gradiomanometer (well logging)

Gradiometer (seismic)

Grain (fluid loss additive)

Grain (formation)

Grain Density

Grainstone

Granite

Granite wash

Grapple

Gravel

Gravel Pack

Gravel Pack Evaluation Tool

Gravel Reserve

Gravimeter

Graviometer

Gravity (API)

Gravity Drainage

Gravity Meter

Gravity Unit (seismic)

Gravity Specific

Gravity Survey

Graywacke

Grease Injector

Green Cement

GRI

Grind Out

Gripper Blocks

GRN

Gross Acres

Gross Pay

Gross Production

Ground Bed

Ground Water

Growth Fault

GRP

GS

Gscm

GSO

GTL

GTS (well testing)

GTW

Guar

Guide Ring

Guide Shoe

Gum

Gumbo

Gun

Gun Barrel

Gun the Pits

Gunk Plug

Gusher

Guy Wire (rigging)

GV

GWC

Gyp Gypsum or Gyp

Gyroscopic Survey