Gamma ray
Gamma rays or gamma-ray are forms of electromagnetic radiation (EMR) or light emissions of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay
Gas lost
Avoidably lost natural gas which is flared or vented (i.e., natural gas not retained in the production system for sale or use).
Gas regulator
device which sets the firing rate in an automatic firearm by releasing gases which are created during firing
Gas sand
stratum of sand or porous sandstone from which natural gas is obtained
Gas-cut mud
a drilling mud having entrained formation gas that gives the mud a characteristically fluffy texture. Because a large amount of gas in mud lowers its density, gas-cut mud often must be treated to lessen the chance of a blowout. Drilling mud aerated or charged with gas from formations downhole. The gas forms bubbles in the drilling fluid seriously affecting drilling operations, sometimes causing loss of circulation