A – B – C – D – E – F – G – H – I – J – K – L – M – N – O – P – R – S – T – U – V – W – X
| FL | F log |
| FMP | Facility measurement point |
| FAT | Factory Acceptance Testing |
| FAC | factual report |
| FS | fail safe |
| FIR | Failure investigation reports |
| FMEA | Failure modes and effects analysis |
| FMECA | Failure modes, effects, and criticality analysis |
| FIT | fairing intervention tool |
| FRU | Fast response units |
| FLT | fault (geology) |
| FTA | Fault tree analysis |
| FCVE | F-curve log |
| FOGRMA | Federal Oil and Gas Royalty Management Act (US Regulation) |
| FOSC | Federal on-scene coordinator |
| FDP | Field development planning |
| FER | field equipment room |
| FPLAN | field plan log |
| FR SIT | Field Representation System Integration Test |
| FLRA | field-level risk assessment |
| CNCF | field-normalised compensated neutron porosity |
| FIL | FIL log |
| FCP | final circulating pressure |
| FGEOL | final geological report |
| FI | final inspection |
| FID | final investment decision |
| FNOS | Final notice of sale |
| FRES | final reserve report |
| FINST | final stratigraphic report |
| FWR | final well report |
| FONSI | Finding of No Significant Impact |
| FTM | fire-team member |
| FIFO | First in, first out |
| FTP | first tranche petroleum |
| FCF | Fishermen’s Contingency Fund |
| FSI | flawless start-up initiative |
| FC | float collar |
| FPS | Floating production system |
| FPU | Floating production unit |
| FPSO | Floating production, storage, and offloading (vessel) |
| FSO | Floating storage and offloading (vessel) |
| FLOG | FLOG PHIX RHGX Log |
| FL | Florida |
| FM | Florida Middle Ground Gulf of Mexico leasing area |
| q | Flow |
| FPL | flow analysis log |
| FLOW | flow and buildup test report |
| FLOPR | flow profile report |
| FWV | flow wing valve (also known as production wing valve on a xmas tree) |
| FGBNMS | Flower Garden Banks National Marine Sanctuary |
| FIP | flow-induced pulsation |
| FIV | flow-induced vibration |
| FBHP | Flowing bottomhole pressure. |
| FTP | Flowing tubing pressure |
| FWHP | Flowing wellhead pressure |
| FLET | Flowline end termination |
| FLIV | flowline injection valve |
| FLMT | Flowline manifold termination |
| FSB | flowline support base |
| FM | Flowmeter |
| FIT | fluid identification test |
| FLS | fluid sample |
| FLOT | flying lead orientation tool |
| FMC | FMC Technologies |
| FMTAN | FMT analysis report |
| FX | Foreign exchange |
| FSA | Formal safety assessment |
| SEG-Y | Format developed by the Society of Exploration Geophysicists for storing geophysical data |
| FANAL | formation analysis sheet log |
| FDC | formation density log |
| FEWD | formation evaluation while drilling |
| FFAC | formation factor log |
| FIT | Formation integrity test |
| FINTP | formation interpretation |
| FIT | formation interval tester |
| FIV | Formation isolation valve |
| FMI | formation micro imaging log (azimuthal microresistivity) |
| FMP | formation microscan report |
| FMS | formation multi-scan log; formation micro-scan log |
| XPT | Formation Pressure Test log (Schlumberger) |
| FT | formation tester log |
| FTRE | formation testing report |
| FVF | Formation volume factor |
| FSU | Former Soviet Union |
| FACHV | four-arm calliper log |
| FP | Frac pack |
| FG | Fracture gradient |
| FRA | fracture log |
| FPDM | fracture potential and domain modelling/mapping |
| FRARE | fracture report |
| FI(M) | free issue (materials) |
| FOB | Free on board |
| FWKO | free water knock-out |
| FWL | free water level |
| FPIT | free-point indicator tool |
| FOB | Freight on board |
| FEL | From east line |
| FNL | From north line |
| FSL | From south line |
| FWL | From west line |
| FEED | Front-end engineering and design |
| FULDI | full diameter study report |
| FFM | full field model |
| FLMPI | Full length magnetic particle inspection |
| FLUT | Full length ultrasonic inspection |
| FH | full-hole tool joint |
| FOSV | Full-opening safety valves |
| FDS | functional design specification |
| FV | funnel viscosity or float valve |
| FOET | Further Offshore Emergency Training |
| FBE | fusion-bonded epoxy |