| SILVER TRAIN 17 FEDERAL COM #751H | 7377 | Oil | New |
| SILVER TRAIN 17 FEDERAL COM #752H | 7377 | Oil | New |
| SILVER TRAIN 17 FEDERAL COM #753H | 7377 | Oil | New |
| SILVER TRAIN 17 FEDERAL COM #754H | 7377 | Oil | New |
| SILVER TRAIN 17 FEDERAL COM #757H | 7377 | Oil | New |
| SILVERHEELS 11 STATE COM #001 | 7377 | Gas | Plugged (site released) |
| SILVERSTRAND STATE #001 | 372171 | Oil | Active |
| SILVERSTRAND STATE #002 | 372171 | Oil | Active |
| SILVERTON 31 FEDERAL #001 | 228937 | Salt Water Disposal | Active |
| SILVERTON BS1 STATE COM #001C | 372165 | Oil | Cancelled |
| SILVERTON BS2 STATE COM #001C | 372165 | Oil | Cancelled |
| SILVERTON BS3 STATE COM #001C | 372165 | Oil | Cancelled |
| SIMANOLA AMW STATE #001 | 7377 | Oil | Plugged (site released) |
| SIMANOLA AMW STATE #002C | 25575 | Oil | Cancelled |
| SIMANOLA AMW STATE #002O | 25575 | Oil | Cancelled |
| SIMMONS #001 | 330220 | Oil | Active |
| SIMMONS #002 | 258350 | Salt Water Disposal | Plugged (site released) |
| SIMMONS #003 | 330220 | Oil | Active |
| SIMMONS #004 | 330220 | Oil | Active |
| SIMMONS ESTATE #001 | 162683 | Oil | Plugged (site released) |
| SIMMONS ESTATE #002 | 333313 | Oil | Active |
| SIMMONS WITT ANB COM #001 | 25575 | Gas | Plugged (site released) |
| SIMMONS WITT ASL #001 | 25575 | Gas | Plugged (site released) |
| SIMMS 35 STATE #003 | 15742 | Oil | Plugged (site released) |
| SIMMS 35 STATE #004 | 15742 | Gas | Plugged (site released) |
| SIMMS 35 SWD #001C | 371643 | Salt Water Disposal | Cancelled |
| SIMPSON #001 | 3776 | Oil | Plugged (site released) |
| SIMS #001 | 21355 | Gas | Active |
| SIMS #001 | 260737 | Gas | Plugged (site released) |
| SIMS #002 | 21355 | Oil | Active |
| SIMS #003 | 12024 | Gas | Plugged (site released) |
| SIMS #005 | 217817 | Oil | Plugged (site released) |
| SIMS 13 STATE #001 | 215099 | Gas | Active |
| SIMS 13 STATE #002 | 215099 | Oil | Active |
| SIMS 13 STATE #003 | 147179 | Oil | Cancelled |
| SIMS 35 STATE #001 | 371553 | Gas | Active |
| SIMS 35 STATE #002 | 371553 | Gas | Active |
| SIMS FEDERAL #001 | 17733 | Oil | Active |
| SIMS FEDERAL #001 | 372171 | Oil | Active |
| SIMS FEDERAL #002 | 17733 | Oil | Active |
| SIMS FEDERAL #003 | 17733 | Oil | Active |
| SIMS PENROC #001 | 21355 | Oil | Active |
| SIMS PENROC #002 | 21355 | Gas | Active |
| SIMS PENROC #003 | 21355 | Oil | Active |
| SIMS PENROC #004 | 21355 | Gas | Active |
| SIMS PENROC #006 | 21355 | Oil | Active |
| SIMS PENROC #007 | 21355 | Oil | Active |
| SIMS PENROC #008 | 21355 | Oil | Active |
| SIMS PENROC #009 | 21355 | Oil | Active |
| SIMS PENROC #010 | 21355 | Gas | Active |
| SIMS STATE #001 | 13954 | Oil | Plugged (site released) |
| SINAGUA 18 FEDERAL #002 | 329487 | Oil | Active |
| SINAGUA 18 FEDERAL COM #001 | 329487 | Gas | Active |
| SINCLAIR A STATE #001 | 372171 | Gas | Active |
| SINCLAIR A STATE #001 | 247692 | Oil | Active |
| SINCLAIR A STATE #005 | 778 | Gas | Plugged (site released) |
| SINCLAIR A STATE #010 | 778 | Gas | Plugged (site released) |
| SINCLAIR B STATE #003 | 372171 | Oil | Plugged (not released) |
| SINCLAIR B STATE #004 | 372171 | Gas | Plugged (not released) |
| SINCLAIR FEDERAL #001 | 3306 | Oil | Plugged (site released) |
| SINCLAIR FEDERAL #001 | 2424 | Oil | Plugged (site released) |
| SINCLAIR FEDERAL #002 | 3306 | Oil | Plugged (site released) |
| SINCLAIR FEDERAL #002 | 2799 | Oil | Plugged (site released) |
| SINCLAIR STATE #001 | 147179 | Gas | Plugged (site released) |
| SINCLAIR STATE #001 | 247692 | Oil | Active |
| SINCLAIR STATE #002 | 13954 | Oil | Plugged (site released) |
| SINCLAIR STATE #002 | 23148 | Oil | Plugged (site released) |
| SINCLAIR STATE #002 | 329326 | Oil | Plugged (not released) |
| SINCLAIR VAC. #001 | 990 | Salt Water Disposal | Plugged (site released) |
| SIOUX 25 36 FEDERAL COM #552H | 331569 | Oil | New |
| SIOUX 25 36 FEDERAL COM #553H | 331569 | Oil | New |
| SIOUX 25 36 FEDERAL COM #554H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #002H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #003H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #004H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #007H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #008H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #009H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #010H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #011H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #012H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #013H | 331569 | Oil | Active |
| SIOUX 25 36 STATE FEDERAL COM #014H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #016H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #020H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #021H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #022H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #023H | 331569 | Oil | New |
| SIOUX 25 36 STATE FEDERAL COM #551H | 331569 | Oil | New |
| SIOUX 25 FEDERAL #006H | 331569 | Oil | New |
| SIOUX 36 STATE #001H | 331569 | Oil | Active |
| SIOUX 36 STATE #005H | 331569 | Oil | Active |
| SIR ALEX FERGUSON STATE #001 | 16696 | Oil | Cancelled |
| SIRINGO ACS STATE #001 | 370661 | Miscellaneous | Active |
| SITKA BSI STATE COM #001H | 229137 | Oil | Active |
| SITKA BSI STATE COM #002C | 25575 | Oil | Cancelled |
| SITKA BSI STATE COM #003C | 25575 | Oil | Cancelled |
| SITKA BSI STATE COM #004C | 25575 | Oil | Cancelled |
| SITTING BULL A #001 | 141402 | Oil | Active |
| SIVLEY #003 | 20497 | Oil | Active |
| SIVLEY 19 FEDERAL #021 | 20497 | Oil | Active |
| SIX SHOOTER 13 FEDERAL #001 | 246289 | Gas | Plugged (site released) |
| SKAGGS B #001 | 21355 | Oil | Active |
| SKAGGS B #005 | 21355 | Oil | Active |
| SKAGGS B #007 | 21355 | Oil | Active |
| SKAGGS B #008 | 21355 | Oil | Active |
| SKAGGS B AC 1 #006 | 21355 | Oil | Active |
| SKAGGS B AC 1 #007 | 21355 | Oil | Active |
| SKAGGS BES STATE #001 | 328565 | Gas | Active |
| SKAGGS GRAYBURG UNIT #001 | 3044 | Injection | Active |
| SKAGGS GRAYBURG UNIT #002 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #003 | 3044 | Injection | Active |
| SKAGGS GRAYBURG UNIT #004 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #005 | 3044 | Injection | Active |
| SKAGGS GRAYBURG UNIT #006 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #008 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #009 | 3044 | Injection | Plugged (site released) |
| SKAGGS GRAYBURG UNIT #010 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #011 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #012 | 3044 | Injection | Active |
| SKAGGS GRAYBURG UNIT #013 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #015 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #016 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #018 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #019 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #020 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #021 | 3044 | Injection | Plugged (site released) |
| SKAGGS GRAYBURG UNIT #022 | 3044 | Oil | Active |
| SKAGGS GRAYBURG UNIT #023 | 3044 | Oil | Active |
| SKEETER BFB STATE #001 | 25575 | Gas | Cancelled |
| SKEETER BFB STATE #001C | 25575 | Gas | Cancelled |
| SKEETER BFB STATE #001C | 25575 | Gas | Cancelled |
| SKELLY 20 STATE #006 | 21355 | Oil | Active |
| SKELLY B STATE COM #002 | 21355 | Gas | Active |
| SKELLY B STATE COM #003 | 21355 | Gas | Active |
| SKELLY B STATE COM #004 | 217817 | Gas | Plugged (site released) |
| SKELLY B STATE COM #005 | 21355 | Gas | Active |
| SKELLY B STATE COM #007 | 21355 | Gas | Active |
| SKELLY D STATE #001 | 196069 | Oil | Active |
| SKELLY D STATE #002 | 196069 | Oil | Active |
| SKELLY D STATE #004 | 196069 | Gas | Active |
| SKELLY D STATE #005 | 196069 | Oil | Plugged (not released) |
| SKELLY F STATE COM #001 | 330679 | Oil | Plugged (not released) |
| SKELLY F STATE COM #002 | 330679 | Gas | Plugged (site released) |
| SKELLY F STATE COM #003 | 330679 | Gas | Active |
| SKELLY GASOLINE PLANT #004 | 24650 | Miscellaneous | Plugged (site released) |
| SKELLY K STATE #001 | 196069 | Oil | Active |
| SKELLY K STATE #002 | 196069 | Oil | Active |
| SKELLY M STATE #004 | 329326 | Gas | Active |
| SKELLY PENROSE A UNIT #001 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #002 | 873 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #003 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #004 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #005 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #006 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #007 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #008 | 873 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #009 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #010 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #011 | 873 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #013 | 22351 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #014 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #015 | 162683 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #016 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #017 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #018 | 22351 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #020 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #021 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #022 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #023 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #024 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #025 | 873 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #026 | 333122 | Injection | Plugged (not released) |
| SKELLY PENROSE A UNIT #027 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #028 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #029 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #030 | 162683 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #031 | 873 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #032 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #033 | 240974 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #034 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #035 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #036 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #037 | 333122 | Oil | Plugged (not released) |
| SKELLY PENROSE A UNIT #038 | 240974 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #039 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #040 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #041 | 162683 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #042 | 333122 | Injection | Active |
| SKELLY PENROSE A UNIT #043 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #044 | 873 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #045 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #046 | 162683 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #047 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #048 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #049 | 162683 | Oil | Plugged (site released) |
| SKELLY PENROSE A UNIT #050 | 873 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #051 | 333122 | Oil | Active |
| SKELLY PENROSE A UNIT #052 | 240974 | Injection | Plugged (site released) |
| SKELLY PENROSE A UNIT #053 | 240974 | Injection | Plugged (site released) |