| 2201 | RACETRACK | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2202 | RAILROAD | Kern County, CA | Oil Property | Aug 1994 |
| 2203 | RAMBLER | Kern County, CA | Oil Property | Oct 2024 |
| 2204 | RAMONA | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2205 | RANCHO CAPAY UNIT | Glenn County, CA | Gas Property | Sep 2024 |
| 2206 | RANCHO PARK | Los Angeles County, CA | Oil & Gas Property | Sep 2024 |
| 2207 | RANCHO SAN FRANCISCO | Los Angeles County, CA | Oil & Gas Property | Dec 2020 |
| 2208 | RANKIN | Kern County, CA | Oil & Gas Property | Apr 1991 |
| 2209 | RANTON | Kern County, CA | Oil Property | Jan 2001 |
| 2210 | RASMUSSEN | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2211 | RASS | Kern County, CA | Oil & Gas Property | Jan 1987 |
| 2212 | RAUSCHENPLAT | San Luis Obispo County, CA | Oil Property | Jun 1987 |
| 2213 | RBU BARNARD | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2214 | RBU CITRUS | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2215 | RBU EDISON | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2216 | RBU GOSNELL | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2217 | RBU L. HARTMANN | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2218 | RBU NOTTEN | Ventura County, CA | Oil & Gas Property | Mar 1993 |
| 2219 | RBU ORTON | Ventura County, CA | Oil & Gas Property | Jan 2019 |
| 2220 | RBU TAYLOR | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2221 | RBU WILLETT | Ventura County, CA | Oil & Gas Property | Apr 2019 |
| 2222 | REAGAN & REYNOLDS | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2223 | REAMER ET AL UNIT | Yolo County, CA | Gas Property | Jan 1989 |
| 2224 | REARDON | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2225 | REARDON | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2226 | REAY | Fresno County, CA | Oil Property | Oct 1986 |
| 2227 | RECLAMATION BOARD | Sacramento County, CA | Oil & Gas Property | Sep 2024 |
| 2228 | RECLAMATION DISTRICT | Yolo County, CA | Gas Property | Nov 1994 |
| 2229 | RECORD | Fresno County, CA | Oil & Gas Property | Sep 2013 |
| 2230 | RECREATION PARK | Los Angeles County, CA | Oil & Gas Property | Sep 2024 |
| 2231 | RECRUIT FEE | Santa Barbara County, CA | Oil & Gas Property | Aug 2024 |
| 2232 | RED BANK | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2233 | RED RIBBON | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2234 | RED ROCK | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2235 | REDONDO | Los Angeles County, CA | Oil & Gas Property | Feb 1992 |
| 2236 | REDONDO COMMUNITY | Los Angeles County, CA | Oil & Gas Property | Apr 1988 |
| 2237 | REDONDO IMPROVEMENT CO | Los Angeles County, CA | Oil & Gas Property | Feb 1980 |
| 2238 | REDU | Orange County, CA | Oil & Gas Property | Sep 2024 |
| 2239 | REED | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2240 | REED C | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2241 | REFINERY | Kern County, CA | Oil Property | Feb 1981 |
| 2242 | REFINERY | Los Angeles County, CA | Oil & Gas Property | Oct 1990 |
| 2243 | REGAL | Kern County, CA | Oil Property | Mar 1982 |
| 2244 | REHSE | Glenn County, CA | Gas Property | Apr 1985 |
| 2245 | RENCH | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2246 | REPETTO 1 | Los Angeles County, CA | Oil & Gas Property | Oct 2003 |
| 2247 | REPUBLIC USL | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2248 | RESERVE | Kern County, CA | Oil & Gas Property | Jan 1992 |
| 2249 | RESERVE-E. W. PAULEY | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2250 | RESERVOIR | Orange County, CA | Oil & Gas Property | Dec 1995 |
| 2251 | RESULT | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2252 | REVENUE | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2253 | REWARD | Kern County, CA | Oil & Gas Property | Sep 2024 |
| 2254 | REWARD | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2255 | REWARD | Kern County, CA | Oil & Gas Property | Jan 2021 |
| 2256 | REYES | Los Angeles County, CA | Oil & Gas Property | Jun 2000 |
| 2257 | REYNOLDS & CARVER | San Joaquin County, CA | Gas Property | Feb 1999 |
| 2258 | REYNOLDS-KNUDSEN | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2259 | RH ANDERSON TWO | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2260 | RHOADS | Tulare County, CA | Oil Property | Oct 2024 |
| 2261 | RICE | Kern County, CA | Oil Property | Dec 2021 |
| 2262 | RICE | Santa Barbara County, CA | Oil & Gas Property | Apr 1989 |
| 2263 | RICE RANCH | Santa Barbara County, CA | Oil & Gas Property | Feb 1995 |
| 2264 | RICHARDS | Kern County, CA | Oil & Gas Property | Sep 2024 |
| 2265 | RICHARDS | Orange County, CA | Oil Property | Jul 1992 |
| 2266 | RICHARDSON | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2267 | RICHARDSON | Kern County, CA | Oil Property | Oct 2024 |
| 2268 | RICHFIELD | Kern County, CA | Oil Property | Feb 2009 |
| 2269 | RICHFIELD | Orange County, CA | Oil & Gas Property | Oct 2024 |
| 2270 | RICHMOND | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2271 | RICO | Los Angeles County, CA | Oil & Gas Property | Feb 1992 |
| 2272 | RIDELL | Contra Costa County, CA | Oil & Gas Property | Apr 1988 |
| 2273 | RIDGE CUT | Yolo County, CA | Gas Property | Nov 1986 |
| 2274 | RIDGE HILL-TEJON | Kern County, CA | Oil Property | Jan 2023 |
| 2275 | RIEDMAN | Los Angeles County, CA | Oil & Gas Property | Nov 1999 |
| 2276 | RIGHETTI | Santa Barbara County, CA | Oil & Gas Property | Jun 2019 |
| 2277 | RILCO 1 | Sacramento County, CA | Gas Property | Sep 1998 |
| 2278 | RING | Kern County, CA | Oil & Gas Property | Oct 2023 |
| 2279 | RING 14 | Kern County, CA | Oil Property | Sep 2024 |
| 2280 | RING VEDDER | Kern County, CA | Oil Property | Sep 2024 |
| 2281 | RIO VIEJO | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2282 | RIO VISTA S | Solano County, CA | Oil & Gas Property | Oct 2024 |
| 2283 | RIPLEY | Kern County, CA | Oil & Gas Property | Jul 2016 |
| 2284 | RIPPERDAN | Fresno County, CA | Oil & Gas Property | Oct 2024 |
| 2285 | RITTER C | San Luis Obispo County, CA | Oil Property | Aug 2015 |
| 2286 | RIVER GARDEN FARMS | Yolo County, CA | Gas Property | Feb 2001 |
| 2287 | RIVER GARDEN FARMS | Yolo County, CA | Gas Property | Nov 1997 |
| 2288 | RIVER ISLANDS LAND CO | Sacramento County, CA | Gas Property | Feb 1990 |
| 2289 | ROARING RIVER 20 | Solano County, CA | Oil & Gas Property | Dec 2020 |
| 2290 | ROBERTS | Kern County, CA | Oil & Gas Property | Dec 2020 |
| 2291 | ROBERTS FEE | Kern County, CA | Oil & Gas Property | Dec 1987 |
| 2292 | ROBERTSON | Ventura County, CA | Oil & Gas Property | Oct 2024 |
| 2293 | ROBERTSON | Kern County, CA | Oil & Gas Property | Jul 2024 |
| 2294 | ROBINSON | Los Angeles County, CA | Oil & Gas Property | Feb 2020 |
| 2295 | ROBINSON | Kern County, CA | Oil Property | Oct 2024 |
| 2296 | ROC-KCL G | Kern County, CA | Oil & Gas Property | Oct 2024 |
| 2297 | ROCK | San Luis Obispo County, CA | Oil & Gas Property | Oct 2024 |
| 2298 | ROCO | Kern County, CA | Oil & Gas Property | Sep 2024 |
| 2299 | RODGERS | Kern County, CA | Oil Property | Dec 2018 |
| 2300 | RODGERS-JONES | Kern County, CA | Oil Property | Oct 1985 |