API
American Petroleum Institute

Bbl
Barrel

Btu
British Thermal Unit

CNG
Compressed Natural Gas

Crude
Crude Oil

DHA
Direct Heating Application

EOR
Enhanced Oil Recovery

FFA
Free Fatty Acid

FT
Fischer-Tropsch (Process)

GTL
Gas-to-Liquids

LNG
Liquefied Natural Gas

LPG
Liquefied Petroleum Gas

Mcf
Thousand Cubic Feet

MMBtu
Million British Thermal Units

MMcf
Million Cubic Feet

MT
Metric Ton

NGL
Natural Gas Liquids

OPEC
Organization of the Petroleum Exporting Countries

PET
Petroleum Engineering Technology

PVT
Pressure-Volume-Temperature

R&D
Research and Development

SPE
Society of Petroleum Engineers

TAR
Tar Sands

TDS
Total Dissolved Solids

TPI
Tubing Performance Index

U.S. EIA
United States Energy Information Administration