| 2301 | RICHFIELD | Orange County, CA | Oil & Gas Property | Apr 2025 |
| 2302 | RICHMOND | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2303 | RICO | Los Angeles County, CA | Oil & Gas Property | Feb 1992 |
| 2304 | RIDELL | Contra Costa County, CA | Oil & Gas Property | Apr 1988 |
| 2305 | RIDGE CUT | Yolo County, CA | Gas Property | Nov 1986 |
| 2306 | RIDGE HILL-TEJON | Kern County, CA | Oil Property | Jan 2023 |
| 2307 | RIEDMAN | Los Angeles County, CA | Oil & Gas Property | Nov 1999 |
| 2308 | RIGHETTI | Santa Barbara County, CA | Oil & Gas Property | Jun 2019 |
| 2309 | RILCO 1 | Sacramento County, CA | Gas Property | Sep 1998 |
| 2310 | RING | Kern County, CA | Oil & Gas Property | Oct 2023 |
| 2311 | RING 14 | Kern County, CA | Oil Property | Apr 2025 |
| 2312 | RING VEDDER | Kern County, CA | Oil Property | May 2025 |
| 2313 | RIO VIEJO | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2314 | RIO VISTA S | Solano County, CA | Oil & Gas Property | Mar 2025 |
| 2315 | RIPLEY | Kern County, CA | Oil & Gas Property | Jul 2016 |
| 2316 | RIPPERDAN | Fresno County, CA | Oil & Gas Property | Apr 2025 |
| 2317 | RITTER C | San Luis Obispo County, CA | Oil Property | Aug 2015 |
| 2318 | RIVER GARDEN FARMS | Yolo County, CA | Gas Property | Feb 2001 |
| 2319 | RIVER GARDEN FARMS | Yolo County, CA | Gas Property | Nov 1997 |
| 2320 | RIVER ISLANDS LAND CO | Sacramento County, CA | Gas Property | Feb 1990 |
| 2321 | ROARING RIVER 20 | Solano County, CA | Oil & Gas Property | Dec 2020 |
| 2322 | ROBERTS | Kern County, CA | Oil & Gas Property | Dec 2020 |
| 2323 | ROBERTS FEE | Kern County, CA | Oil & Gas Property | Dec 1987 |
| 2324 | ROBERTSON | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2325 | ROBERTSON | Kern County, CA | Oil & Gas Property | Jul 2024 |
| 2326 | ROBINSON | Los Angeles County, CA | Oil & Gas Property | Feb 2020 |
| 2327 | ROBINSON | Kern County, CA | Oil Property | Apr 2025 |
| 2328 | ROC-KCL G | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2329 | ROCK | San Luis Obispo County, CA | Oil & Gas Property | May 2025 |
| 2330 | ROCO | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2331 | RODGERS | Kern County, CA | Oil Property | Dec 2018 |
| 2332 | RODGERS-JONES | Kern County, CA | Oil Property | Oct 1985 |
| 2333 | RODUNER | Madera County, CA | Gas Property | Jun 2005 |
| 2334 | ROE 1 | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2335 | ROE 3 | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2336 | ROOSA | Los Angeles County, CA | Oil & Gas Property | May 2025 |
| 2337 | ROSECRANS | Los Angeles County, CA | Oil & Gas Property | Apr 2025 |
| 2338 | ROSEDALE OIL UNIT NO | Kern County, CA | Oil & Gas Property | May 2025 |
| 2339 | ROSEDALE RANCH | Kern County, CA | Oil & Gas Property | May 2025 |
| 2340 | ROSEDALE-STEVENS COMMUNITY | Kern County, CA | Oil & Gas Property | Feb 2025 |
| 2341 | ROSEMOND 1 | Los Angeles County, CA | Oil & Gas Property | May 2025 |
| 2342 | ROSENBERG | Monterey County, CA | Oil & Gas Property | May 2025 |
| 2343 | ROSINA | Kern County, CA | Oil Property | Dec 2020 |
| 2344 | ROSS | Kern County, CA | Oil & Gas Property | Mar 1991 |
| 2345 | ROSSI | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2346 | ROTH 1 | Yolo County, CA | Gas Property | May 2010 |
| 2347 | ROWDETT | Kern County, CA | Oil Property | Jan 2020 |
| 2348 | ROWLAND | Los Angeles County, CA | Oil & Gas Property | May 2003 |
| 2349 | RUBEL | Los Angeles County, CA | Oil & Gas Property | May 2025 |
| 2350 | RUBY SMITHWICK | Kern County, CA | Oil & Gas Property | May 2025 |
| 2351 | RUDNICK | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2352 | RUDOLPH | San Benito County, CA | Oil Property | Jun 2025 |
| 2353 | RUSSELL | Yolo County, CA | Gas Property | Dec 1986 |
| 2354 | RUSSELL | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2355 | RUSSELL | Yolo County, CA | Gas Property | Mar 2004 |
| 2356 | RVGU | Contra Costa County, CA | Oil & Gas Property | Apr 2025 |
| 2357 | RX UNIT 2 | Sutter County, CA | Gas Property | Apr 2025 |
| 2358 | RYAN BROWN | Kern County, CA | Oil Property | May 2025 |
| 2359 | RYER | Solano County, CA | Oil & Gas Property | Feb 2024 |
| 2360 | RYNNE-FISHER | Los Angeles County, CA | Oil & Gas Property | May 2013 |
| 2361 | S-R-D B | Kern County, CA | Oil & Gas Property | Nov 2012 |
| 2362 | S. E. BOWERBANK | Kern County, CA | Gas Property | Jul 1994 |
| 2363 | S.C.U. 1 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2364 | S.C.U. 2 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2365 | S.C.U. 3 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2366 | S.C.U. 4 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2367 | S.C.U. 5 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2368 | S.C.U. 6 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2369 | S.C.U. 7 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2370 | S.C.U. 8 | Santa Barbara County, CA | Oil & Gas Property | May 2025 |
| 2371 | S.P. 31 | Kern County, CA | Oil Property | Mar 1993 |
| 2372 | S.P. 33 | Kern County, CA | Oil Property | May 2025 |
| 2373 | S.P. 33 | Kern County, CA | Oil Property | Dec 2012 |
| 2374 | S.P. LEASE 64 | Kern County, CA | Oil Property | Jul 1988 |
| 2375 | S.P.S. 1 | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2376 | S.P.S. 2 | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2377 | S.P.S. 3 | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2378 | S.P.S. 4 | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2379 | S.P.S. 5 | Ventura County, CA | Oil & Gas Property | Apr 2025 |
| 2380 | SA & FL | Fresno County, CA | Oil Property | Jan 2002 |
| 2381 | SAC. 1 | Kern County, CA | Oil Property | Jan 2025 |
| 2382 | SAC. 2 | Kern County, CA | Oil Property | Nov 2024 |
| 2383 | SAC. 3 | Kern County, CA | Oil Property | Nov 2024 |
| 2384 | SAC. 4 | Kern County, CA | Oil Property | Apr 2025 |
| 2385 | SAC. 5 | Kern County, CA | Oil Property | Apr 2025 |
| 2386 | SAC. 6 | Kern County, CA | Oil Property | Jul 2024 |
| 2387 | SAC. 7 | Kern County, CA | Oil Property | Oct 2024 |
| 2388 | SAC. T.O | Kern County, CA | Oil Property | Dec 1978 |
| 2389 | SACHREITER | Colusa County, CA | Gas Property | Sep 1989 |
| 2390 | SACRAMENTO | Sacramento County, CA | Gas Property | Apr 2011 |
| 2391 | SADD | Los Angeles County, CA | Oil & Gas Property | May 2025 |
| 2392 | SADIE ANDREWS | Kern County, CA | Oil Property | May 2025 |
| 2393 | SAFE FEE | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 2394 | SAGE UNIT | Tehama County, CA | Gas Property | Apr 2025 |
| 2395 | SALISBURY | Kern County, CA | Gas Property | Jul 1985 |
| 2396 | SALISBURY | Kern County, CA | Oil Property | Apr 2025 |
| 2397 | SALT CREEK | Kern County, CA | Oil & Gas Property | May 2025 |
| 2398 | SALYER 6 | Kings County, CA | Oil & Gas Property | Oct 2015 |
| 2399 | SAMPLE | Fresno County, CA | Oil Property | Mar 1985 |
| 2400 | SAMPLINER | Kern County, CA | Oil & Gas Property | May 2025 |