| 2501 | SHIELLS-SOUNDWAVE 1 | Ventura County, CA | Oil & Gas Property | Dec 2024 |
| 2502 | SHLAUDEMAN | San Luis Obispo County, CA | Oil & Gas Property | Feb 2012 |
| 2503 | SHOSHONE | Yolo County, CA | Gas Property | Mar 2010 |
| 2504 | SIEGFUS | Kern County, CA | Oil & Gas Property | Oct 2013 |
| 2505 | SIEMON | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2506 | SIGNAL | San Luis Obispo County, CA | Oil & Gas Property | Dec 2024 |
| 2507 | SIGNAL | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2508 | SIGNAL | Kern County, CA | Oil Property | Oct 2017 |
| 2509 | SIGNET | San Joaquin County, CA | Gas Property | Jan 2006 |
| 2510 | SILL | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2511 | SILL | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2512 | SILLER | Sutter County, CA | Gas Property | Dec 2008 |
| 2513 | SILVA | Tehama County, CA | Gas Property | Feb 1999 |
| 2514 | SILVER CREEK | Fresno County, CA | Oil & Gas Property | Dec 1987 |
| 2515 | SIMMONS | Los Angeles County, CA | Oil & Gas Property | Oct 1989 |
| 2516 | SIMSON | Glenn County, CA | Gas Property | Jun 2014 |
| 2517 | SINCLAIR | Monterey County, CA | Oil & Gas Property | Feb 2019 |
| 2518 | SIR KEGIAN | Los Angeles County, CA | Oil Property | Mar 1992 |
| 2519 | SIZU | Ventura County, CA | Oil & Gas Property | Dec 2024 |
| 2520 | SLOAN | Ventura County, CA | Oil & Gas Property | May 2019 |
| 2521 | SLOAN | San Luis Obispo County, CA | Oil & Gas Property | Oct 2021 |
| 2522 | SLOAN FLACK | Kern County, CA | Oil Property | Oct 1988 |
| 2523 | SLOCUM | Ventura County, CA | Oil Property | Jan 1989 |
| 2524 | SLUSHER | Los Angeles County, CA | Oil & Gas Property | Feb 2001 |
| 2525 | SMALL | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2526 | SMITH | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2527 | SMITH | Kern County, CA | Oil Property | Dec 2024 |
| 2528 | SMITH | Orange County, CA | Oil Property | May 1988 |
| 2529 | SMITH | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2530 | SMOOT | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2531 | SMV MINERALS | Santa Barbara County, CA | Oil & Gas Property | Dec 2024 |
| 2532 | SMV MINERALS | Santa Barbara County, CA | Oil & Gas Property | Apr 1989 |
| 2533 | SMVU ADAM | Santa Barbara County, CA | Oil & Gas Property | Dec 1987 |
| 2534 | SMVU BATTLES | Santa Barbara County, CA | Oil & Gas Property | Apr 1995 |
| 2535 | SMVU FLEISHER | Santa Barbara County, CA | Oil & Gas Property | Jul 1987 |
| 2536 | SMVU GETTY | Santa Barbara County, CA | Oil & Gas Property | Mar 1991 |
| 2537 | SMVU MA | Santa Barbara County, CA | Oil & Gas Property | Nov 1980 |
| 2538 | SMVU ROSENBLUM | Santa Barbara County, CA | Oil & Gas Property | Jun 1978 |
| 2539 | SMVU RUSSELL | Santa Barbara County, CA | Oil & Gas Property | May 1994 |
| 2540 | SMVU SA | Santa Barbara County, CA | Oil & Gas Property | May 1994 |
| 2541 | SMVU SIGNAL | Santa Barbara County, CA | Oil & Gas Property | Feb 1991 |
| 2542 | SMVU STANDARD-MORETTI | Santa Barbara County, CA | Oil & Gas Property | Mar 1991 |
| 2543 | SMVU SUNRAY | Santa Barbara County, CA | Oil & Gas Property | Apr 1995 |
| 2544 | SMVU TONASCIA | Santa Barbara County, CA | Oil & Gas Property | Feb 1995 |
| 2545 | SMVU TWITCHELL | Santa Barbara County, CA | Oil & Gas Property | Jan 1994 |
| 2546 | SMVU UNION | Santa Barbara County, CA | Oil & Gas Property | Aug 2022 |
| 2547 | SMVU UNION-MORETTI III | Santa Barbara County, CA | Oil & Gas Property | Jun 1982 |
| 2548 | SMVU UNION-ODONNELL II | Santa Barbara County, CA | Oil & Gas Property | May 1994 |
| 2549 | SMVU VINCENT | Santa Barbara County, CA | Oil & Gas Property | Jun 1984 |
| 2550 | SMVU WYLIE | Santa Barbara County, CA | Oil & Gas Property | Apr 1995 |
| 2551 | SNOW | Kern County, CA | Oil Property | Oct 1986 |
| 2552 | SNOW | Ventura County, CA | Oil & Gas Property | Dec 2018 |
| 2553 | SNOW-G.P | Kern County, CA | Oil Property | Dec 2024 |
| 2554 | SNOW-USL | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2555 | SNYDER | Yolo County, CA | Gas Property | Apr 1996 |
| 2556 | SNYDER | Ventura County, CA | Oil & Gas Property | Dec 2024 |
| 2557 | SO CAL | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2558 | SO. MOUNTAIN FB I | Ventura County, CA | Oil & Gas Property | Nov 2024 |
| 2559 | SOLADINO | Santa Barbara County, CA | Oil & Gas Property | Dec 2024 |
| 2560 | SON-CRAIL | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2561 | SONNTAG | Fresno County, CA | Oil Property | Sep 1983 |
| 2562 | SONOL SECURITIES | San Joaquin County, CA | Oil & Gas Property | May 2023 |
| 2563 | SORENSON | Yolo County, CA | Gas Property | Aug 1984 |
| 2564 | SOSA FOD | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2565 | SOUDAN | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2566 | SOUTH BAY | Los Angeles County, CA | Oil & Gas Property | Jul 2000 |
| 2567 | SOUTH BOLSA S | Orange County, CA | Oil & Gas Property | Dec 2024 |
| 2568 | SOUTH CERRITOS | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2569 | SOUTH COLES LEVEE | Kern County, CA | Oil & Gas Property | Jun 2024 |
| 2570 | SOUTH DAVIS | Solano County, CA | Gas Property | Jul 1995 |
| 2571 | SOUTH END | Kern County, CA | Oil & Gas Property | Jun 2003 |
| 2572 | SOUTH MOUNTAIN | Ventura County, CA | Oil & Gas Property | Dec 2024 |
| 2573 | SOUTH RIO VIEJO | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2574 | SOUTH ROSEDALE | Kern County, CA | Oil & Gas Property | Jan 2020 |
| 2575 | SOUTH SYCAMORE | Colusa County, CA | Gas Property | Dec 2024 |
| 2576 | SOUTH TAPO | Ventura County, CA | Oil & Gas Property | Dec 2024 |
| 2577 | SOUTH TISDALE | Sutter County, CA | Oil & Gas Property | Dec 2024 |
| 2578 | SOUTH TORRANCE UNIT | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2579 | SOUTHAM | Colusa County, CA | Gas Property | Mar 2001 |
| 2580 | SOUTHERN PACIFIC | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2581 | SOUTHERN PACIFIC | Kern County, CA | Oil Property | May 1998 |
| 2582 | SOUTHSIDE | Los Angeles County, CA | Oil & Gas Property | Aug 2013 |
| 2583 | SOUTHWESTERN | Kern County, CA | Oil Property | Dec 2024 |
| 2584 | SOVEREIGN | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2585 | SOWERS FEE | Kern County, CA | Oil Property | Aug 2000 |
| 2586 | SOWERS USL | Kern County, CA | Oil Property | Nov 2015 |
| 2587 | SP 42 | Kern County, CA | Oil Property | Dec 2024 |
| 2588 | SP 68 | Kern County, CA | Oil Property | Dec 2024 |
| 2589 | SPEARS | Kern County, CA | Oil Property | Dec 1983 |
| 2590 | SPECKMAN | San Joaquin County, CA | Gas Property | Sep 2006 |
| 2591 | SPEED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 2592 | SPINKS CRUDE | Fresno County, CA | Oil & Gas Property | Dec 2024 |
| 2593 | SPRAGUE LEWIS | Glenn County, CA | Gas Property | Dec 2024 |
| 2594 | SPRECKELS | Kern County, CA | Oil Property | Apr 1986 |
| 2595 | SPRECKELS | Kern County, CA | Oil & Gas Property | Mar 2018 |
| 2596 | SPRING | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2597 | SPRINGS | Los Angeles County, CA | Oil & Gas Property | Jan 1990 |
| 2598 | SQUIRES | Santa Barbara County, CA | Oil & Gas Property | Dec 2024 |
| 2599 | ST. FRANCIS | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 2600 | ST. JAMES | Los Angeles County, CA | Oil & Gas Property | Nov 2013 |