A – B – C – D – E – F – G – H – I – J – K – L – M – N – O – P – R – S – T – U – V – W – X
| SA | Sabine Pass (Louisiana) Gulf of Mexico leasing area |
| SX | Sabine Pass (Louisiana) Gulf of Mexico leasing area |
| SWP | Safe work practices |
| SWL | Safe working load |
| SWP | Safe working pressure |
| SAFE | Safety analysis function evaluation (charts) |
| SEMP | Safety and environmental management plan as defined in API RP 75 |
| SEMS | Safety and Environmental Management System policy, as defined in US regulation CFR 30 Part 250 Subpart S |
| SPPE | Safety and pollution prevention equipment |
| SIS | Safety instrumented systems |
| SMS | Safety management systems |
| SOLAS | Safety of Life at Sea |
| STOP | Safety Training Observation Program |
| SCE | Safety-critical equipment |
| SW | Salt Water |
| SWD | Salt Water Disposal Well |
| SAML | Sample Log |
| SAMTK | Sample Taker Log |
| SANDA | Sandstone Analysis Log |
| SAT | SAT Log |
| SLCO | Saudi Light Crude Oil (benchmark crude) |
| SCAP | Scallops Log |
| SLB | Schlumberger |
| SCHLL | Schlumberger Log also SCHLO, SCHLU |
| SNIP | Scotland-Northern Ireland Pipeline |
| SAGE | Scottish Area Gas Evacuation |
| SDPBH | SDP Bottom Hole Pressure Report |
| SMLS | Seamless PipeMPP: |
| SN | Seat Nipple |
| SECGU | Section Gauge Log |
| SEDHI | Sedimentary History |
| SEDIM | Sedimentology |
| SEDL | Sedimentology Log |
| SEDRE | Sedimentology Report |
| SBT | Segmented Bond Tool |
| SC | Seismic Calibration |
| SL | Seismic Lines |
| SPROF | Seismic Profile |
| SQL | Seismic Quicklook Log |
| SREC | Seismic Record Log |
| SRD | Seismic Reference Datum, an imaginary horizontal surface at which TWT is assumed to be zero |
| SCBA | Self-contained breathing apparatus |
| SCUBA | Self-contained underwater breathing apparatus |
| SPMT | Self-Propelled Modular Transporter |
| SRL | Self-retracting lifelines |
| SS | Semisubmersible (MOU) |
| Semi | Semi-Submersible Drilling Rig |
| SWE | Senior Well Engineer |
| SHA | Sensor Harness Assembly |
| SEPAR | Separator Sampling Report |
| SEQSU | Sequential Survey |
| SP | Set Point |
| SGR | Shale Gouge Ratio |
| SHA | Shallow hazard assessment |
| SWF | Shallow water flow |
| SPT | Shallower Pool Test, Lahee classification |
| SR | Shear Rate |
| S-wave | Shear wave |
| SGSI | Shell Global Solutions International |
| SMAW | Shielded metal arc welding |
| SS | Ship Shoal Area Gulf of Mexico leasing area |
| SOPEP | Shipboard oil pollution emergency plan |
| SHOCK | Shock Log |
| SSE | Short service employee |
| STEL | Short-term exposure limit |
| SP | Shot point (geophysics) |
| spf | Shots per foot |
| SHOWL | Show Log |
| SDFD | Shut Down For Day |
| SDFN | Shut Down For Night |
| SIP | Shut In Pressure |
| SITHP | Shut In Tubing Hanger/Head Pressure (another term for CITHP) |
| SI | Shut In well |
| SI/TA | Shut In/Temporarily Abandoned |
| SDV | Shutdown valve |
| SICP | Shut-In Casing Pressure |
| SIDPP | Shut-In Drill Pipe Pressure |
| SITP | Shut-in tubing pressure |
| SIWHP | Shut-in Well Head Pressure |
| SPM | Side Pocket Mandrel or Strokes Per Minute (of a positive-displacement pump) |
| ST | Sidetrack |
| SCDES | Sidewall Core Description |
| SCRS | Sidewall Cores |
| SNP | Sidewall Neutron Porosity |
| SIDSM | Sidewall Sample |
| SSG | Sidewall Sample Gun |
| Hs | Significant Wave Height |
| SIMCON | Simultaneous Construction |
| SIMOPS | Simultaneous Operations |
| SABS | Single action bypass sub |
| SALM | Single Anchor Loading Mooring |
| SPFM | Single Phase Flow Meter |
| SITT | Single TT Log |
| SPBM | Single-point buoy mooring system |
| SB | SIT-BO Log |
| SAT | Site Acceptance Test |
| SRT | Site Receival Test |
| SEA | Site-specific environmental assessment |
| SV | Sleeve Valve or Standing Valve |
| SSD | Sliding Sleeve Door |
| SOW | Slip-On Wellhead |
| SLS | SLS GR Log |
| SLT | SLT GR Log |
| SMA | Small Amount |
| SME | Small and medium sized enterprises |
| SNAM | Societ? NAzionale Metanodotti now Snam S.p.A. (Italy) |
| SEG | Society of Exploration Geophysicists |
| SIPES | Society of Independent Professional Earth Scientists, United States |
| SIGTTO | Society of International Gas Tanker and Terminal Operators |
| SPE | Society of Petroleum Engineers |
| SPWLA | Society of Petrophysicists and Well Log Analysts (formerly the Society of Professional Well Log Analysts) |
| SaaS | Software as a service |
| SONCB | Sonic Calibration Log |
| SONRE | Sonic Calibration Report |
| SD | Sonic Density |
| SDIC | Sonic Dual Induction |
| MAST | sonic tool (records waveform). |
| SONWV | Sonic Waveform Log |
| SONWR | Sonic Waveform Report |
| SM | South Marsh Island Gulf of Mexico leasing area |
| SMI | South Marsh Island Gulf of Mexico leasing area |
| PS | South Padre Island Gulf of Mexico leasing area |
| SP | South Pass Area Gulf of Mexico leasing area |
| PL | South Pelto Area Gulf of Mexico leasing area |
| ST | South Timbalier Area Gulf of Mexico leasing area |
| SNS | Southern North Sea |
| SCAL | Special core analysis |
| SPCAN | Special core analysis |
| SEA | Special end area |
| SPEAN | Spectral Analysis |
| SPEL | Spectralog |
| SWSS | Sperm whale seismic study |
| SPH | SPH Log |
| SPRP | Spill prevention and response plan |
| SPCC | Spill prevention control and countermeasures |
| SONS | Spills of national significance |
| SWHE | Spiral Wound Heat Exchanger |
| SP | Spontaneous Potential (Well Log) |
| SPOP | Spontaneous Potential Log |
| SGUN | Squeeze Gun |
| PB | St. Petersburg Gulf of Mexico leasing area |
| SHO | Stab and Hinge Over |
| STAB | Stabiliser |
| SS | Stainless steel |
| SPP | Stand Pipe Pressure |
| S&P | Standard & Poors |
| scf | standard cubic feet (of natural gas) |
| SOP | Standard operating procedure |
| ASTM F1166-95 | Standard Practice for Human Engineering Design for Marine Systems, Equipment and Facilities |
| STP | Standard temperature and pressure |
| SOSC | State on-scene coordinator |
| SOR | Statement of requirement |
| SOW | Statements of work |
| SG | Static Gradient |
| STAGR | Static Gradient Survey Report |
| STC | STC Log |
| SAGD | Steam Assisted Gravity Drainage |
| SCR | Steel catenary riser |
| SFL | Steel Flying Lead |
| SGS | Steel Gravity Substructure |
| STFL | Steel Tube Fly Lead |
| STU | Steel Tube Umbilical |
| SDT | Step Draw-down Test (sometimes SDDT) |
| SKPLT | Stick Plot Log |
| STIMU | Stimulation Report |
| STL | STL Gamma Ray Log |
| ST | Stock Tank – A measurement of liquids taken at specific pressure and temperature conditions |
| STB | Stock tank barrel |
| STOIIP | Stock Tank Oil Initially In Place |
| STOOIP | Stock tank oil initially in place |
| SWA | Stop work authority |
| SEA | Strategic Environmental Assessment (United Kingdom) |
| SHDT | Stratigraphic High Resolution Dipmeter Tool |
| STGL | Stratigraphic Log |
| STRRE | Stratigraphy Report |
| STRAT | Stratigraphy, stratigraphic |
| SWOT | Strengths, Weaknesses, Opportunities and Threats |
| STSH | String Shot |
| STKPT | Stuck Point |
| SSD | Sub Sea Level depth (in Metres or Feet, positive value in downwards direction with respect to the Geoid) |
| SME | Subject matter expert |
| SPS | Submerged production system |
| STL | Submerged Turret Loading |
| STP | Submerged Turret Production |
| SAM | Subsea Accumulator Module |
| SCM | Subsea Control Module (Mounting Base) |
| SSCS | Subsea Control System |
| SSCV | Subsea control valves |
| SDM/U | Subsea Distribution Module/Unit |
| SDU/M | Subsea Distribution Unit/Module |
| SEM | Subsea Electronics Module |
| SSIV | Subsea isolation valve |
| SSM | Subsea Manifolds |
| SMPC | Subsea Multiphase Pump: Pump, which can increase flowrate and pressure of the untreated wellstream |
| SSPLR | Subsea Pig Launcher/Receiver |
| SPCU | Subsea Power and Control Unit |
| SPS | Subsea Production Systems |
| SSV | Subsea safety valve |
| SSTT | Subsea test tree |
| SSTT | Subsea Test Tree |
| SSTV | Subsea Test Valve |
| SSTI | Subsea tie in |
| SUT(A/B) | Subsea Umbilical Termination (Assembly/Box) |
| SUTA | Subsea umbilical termination assembly |
| SUTU | Subsea Umbilical Termination Unit |
| SSU | Subsea Umbilicals |
| SSWI | Subsea Well Intervention |
| SS | Subsea, as in a datum of depth, e.g. TVDSS (True Vertical Depth Subsea) |
| SURF | Subsea/Umbilicals/Risers/Flowlines |
| SSSV | Subsurface safety valve |
| SSSV | Sub-Surface Safety Valve |
| SSCSV | Subsurface-controlled safety valve |
| SMO | Suction Module |
| SSCC | Sulphide Stress Corrosion Cracking |
| SUML | Summarised Log |
| SUMRE | Summary Report |
| SCADA | Supervisory Control and Data Acquisition |
| SEIS | Supplemental environmental impact statement |
| SEP | Supplemental exploration plan |
| SSSL | Supplementary Seismic Survey Licence (United Kingdom), a type of onshore licence |
| SABA | Supplied Air Breathing Apparatus |
| SDL | Supplier Document List |
| SCM | Supply chain management |
| SCOTUS | Supreme Court of the United States |
| SHL | Surface hole location |
| SSV | Surface safety valve |
| SURFR | Surface Sampling Report |
| SCSSSV | Surface-controlled subsurface safety valve |
| SCSSV | Surface-controlled subsurface safety valve |
| SURVL | Survey Chart Log |
| SURRE | Survey Report |
| SOP | Suspension of production |
| SCP | Sustained casing pressure |
| SBF | Synthetic Base Fluid |
| SCO | Synthetic crude oil |
| SOBM | Synthetic oil-based mud |
| SSMAR | Synthetic Seismic Marine Log |
| SYNRE | Synthetic Seismic Report |
| SYSEI | Synthetic Seismogram Log |
| SBM | Synthetic-based mud |
| SIT | System Integration Test |