Oil and gas leases in Union Oil Company Of California — page 2

Union Oil Company Of California is a Texas operator, Commission number 876520, with 717 leases reporting production across 45 counties. 518 of them are oil leases and 199 are gas leases. Between them they carry 4,398 wellbores. Reported volumes run from January 1993 to August 2026 and come to 167.2 million barrels of oil and 452.4 million Mcf of gas. Every lease below has its own page with a decline-curve forecast and an estimate of what the whole lease is worth.

Key facts about Union Oil Company Of California

How many oil and gas leases are in Union Oil Company Of California?: Union Oil Company Of California has 717 oil and gas leases with production reported to the Railroad Commission of Texas, as of August 2026.
How much oil and gas has Union Oil Company Of California produced?: Leases in Union Oil Company Of California have reported 167,159,100 barrels of oil (bbl) and 452,428,612 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between January 1993 and August 2026.
How much are mineral rights in Union Oil Company Of California worth?: There is no single figure: what a mineral or royalty interest in Union Oil Company Of California is worth depends on the individual lease, its decline, and the share the owner holds. Each of the 717 leases listed here has its own page with the full production history the operator reported, a decline-curve forecast, and an estimate of what a royalty interest in it is worth today.

Leases — page 2 of 4

PARKER, J. E. "D" UNIT — oil, Union Oil Company Of California, Andrews County, 231 thousand reported
MADDOX, J. W. -D- — oil, Union Oil Company Of California, Montague County, 230 thousand reported
ALDWELL BROTHERS "15" — gas, Union Oil Company Of California, Sutton County, 223 thousand reported
THOMPSON 49 — oil, Union Oil Company Of California, Van Zandt County, 222 thousand reported
CHAPPELL — gas, Union Oil Company Of California, Upshur County, 218 thousand reported
JONES, E. K. — gas, Union Oil Company Of California, Crockett County, 217 thousand reported
PARKER, J. E. -H- — oil, Union Oil Company Of California, Andrews County, 215 thousand reported
POWERS, JAMES — gas, Union Oil Company Of California, Jackson County, 213 thousand reported
RAY, S. R. — gas, Union Oil Company Of California, Van Zandt County, 209 thousand reported
PARKER, J. E. -C- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 207 thousand reported
DEFORD, R. K. A/C #2 — oil, Union Oil Company Of California, Andrews County, 204 thousand reported
ACTON, PAMELA — gas, Union Oil Company Of California, Crockett County, 204 thousand reported
MURPHREE, J. J. 31 — oil, Union Oil Company Of California, Van Zandt County, 203 thousand reported
EVANS, N.T. — gas, Union Oil Company Of California, Reeves County, 201 thousand reported
ZETKA, JOSEF — oil, Union Oil Company Of California, Jackson County, 200 thousand reported
SWAIN, O. L. 109 — oil, Union Oil Company Of California, Van Zandt County, 199 thousand reported
HEFLEY — gas, Union Oil Company Of California, Hemphill County, 197 thousand reported
WILLARD -741- — oil, Union Oil Company Of California, Yoakum County, 195 thousand reported
BRAWNER, L.M. 10 — oil, Union Oil Company Of California, Van Zandt County, 192 thousand reported
JONES ESTATE A — oil, Union Oil Company Of California, Gaines County, 189 thousand reported
WIESE, DELLA — oil, Union Oil Company Of California, Jackson County, 185 thousand reported
UNIVERSITY (M) -DD- — oil, Union Oil Company Of California, Crockett County, 184 thousand reported
PHILLIPS UNIVERSITY "DD" — oil, Union Oil Company Of California, Andrews County, 184 thousand reported
JARMAN, W. T. 37 — oil, Union Oil Company Of California, Van Zandt County, 183 thousand reported
NEWTON — gas, Union Oil Company Of California, Howard County, 183 thousand reported
UNIVERSITY JD — oil, Union Oil Company Of California, Andrews County, 182 thousand reported
PARKER-STATE — oil, Union Oil Company Of California, Andrews County, 181 thousand reported
BRAWNER, L. M. 10 — oil, Union Oil Company Of California, Van Zandt County, 181 thousand reported
YORK, ELLA 102 — oil, Union Oil Company Of California, Van Zandt County, 179 thousand reported
MOSS, PAUL -2- — oil, Union Oil Company Of California, Ector County, 175 thousand reported
SOUTH VAN, LEWISVILLE,W. F. UNIT — oil, Union Oil Company Of California, Van Zandt County, 174 thousand reported
SMITH, L. A. 103 — oil, Union Oil Company Of California, Van Zandt County, 173 thousand reported
SWAIN, O. L. 11B — oil, Union Oil Company Of California, Van Zandt County, 173 thousand reported
PARKER, J. E. -B- — oil, Union Oil Company Of California, Andrews County, 172 thousand reported
GRAFA DEEP — oil, Union Oil Company Of California, Andrews County, 172 thousand reported
PARKER, J. E. "F" — oil, Union Oil Company Of California, Andrews County, 169 thousand reported
CRAVENS, E.T. — gas, Union Oil Company Of California, Jackson County, 168 thousand reported
PARKER, J. E., -C- — oil, Union Oil Company Of California, Andrews County, 164 thousand reported
SPACEK, FRANK — oil, Union Oil Company Of California, Jackson County, 164 thousand reported
SWAIN, W. F. 9 — gas, Union Oil Company Of California, Van Zandt County, 164 thousand reported
COWDEN, E. P. "A-26" — gas, Union Oil Company Of California, Andrews County, 163 thousand reported
PARKER, J. E. -B- — oil, Union Oil Company Of California, Andrews County, 163 thousand reported
MOSELEY, H. — oil, Union Oil Company Of California, Gregg County, 162 thousand reported
JOHNSON, SID — gas, Union Oil Company Of California, Orange County, 162 thousand reported
PETERS, R. H. 29 — oil, Union Oil Company Of California, Van Zandt County, 161 thousand reported
CUMBIE, J. E. 32 — oil, Union Oil Company Of California, Van Zandt County, 161 thousand reported
CALEDONIA — oil, Union Oil Company Of California, Gaines County, 157 thousand reported
PARKER, J. E. -C- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 154 thousand reported
TAYLOR, T. J. 33 — oil, Union Oil Company Of California, Van Zandt County, 153 thousand reported
SMITH 103 — oil, Union Oil Company Of California, Van Zandt County, 153 thousand reported
ANTHONY, H. F. — gas, Union Oil Company Of California, Reeves County, 153 thousand reported
ASHTON — oil, Union Oil Company Of California, Andrews County, 153 thousand reported
UNIVERSITY "JF" — oil, Union Oil Company Of California, Andrews County, 152 thousand reported
HANSEN, E. O. ET AL UNIT — gas, Union Oil Company Of California, Matagorda County, 151 thousand reported
SHIVERS, J. R. 12 — oil, Union Oil Company Of California, Van Zandt County, 151 thousand reported
MOSS "B" — oil, Union Oil Company Of California, Ector County, 150 thousand reported
LEONARD, J. M. 30 — oil, Union Oil Company Of California, Van Zandt County, 149 thousand reported
OLIVER, J. R. 207 — oil, Union Oil Company Of California, Van Zandt County, 148 thousand reported
COWDEN, E. W. UNIT — gas, Union Oil Company Of California, Winkler County, 145 thousand reported
JARMAN, W. T. 37 — oil, Union Oil Company Of California, Van Zandt County, 143 thousand reported
SWAIN, W. F. 9 — oil, Union Oil Company Of California, Van Zandt County, 142 thousand reported
CUMBIE 32 — oil, Union Oil Company Of California, Van Zandt County, 142 thousand reported
MURPHREE 31 — oil, Union Oil Company Of California, Van Zandt County, 140 thousand reported
CRAVENS, J. R. — oil, Union Oil Company Of California, Jackson County, 138 thousand reported
PARKER, J. E. "X" — oil, Union Oil Company Of California, Andrews County, 138 thousand reported
CRIM, B. E. 15 — oil, Union Oil Company Of California, Van Zandt County, 137 thousand reported
BROWN /GLORIETA/ UNIT — oil, Union Oil Company Of California, Gaines County, 136 thousand reported
SWAIN, O.L. 109 — gas, Union Oil Company Of California, Van Zandt County, 132 thousand reported
PARKER, J. E. -H- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 132 thousand reported
HOLT, O. B. — oil, Union Oil Company Of California, Ector County, 131 thousand reported
PARKER, J.E. "F" — oil, Union Oil Company Of California, Andrews County, 131 thousand reported
MASTEN -J- — gas, Union Oil Company Of California, Cochran County, 131 thousand reported
MURPHREE J. J. 31 — oil, Union Oil Company Of California, Van Zandt County, 128 thousand reported
JARMEN, W. T. 37 — oil, Union Oil Company Of California, Van Zandt County, 128 thousand reported
RAY, S. R. — oil, Union Oil Company Of California, Van Zandt County, 127 thousand reported
SMITH, F. G. -A- — gas, Union Oil Company Of California, Ward County, 127 thousand reported
FRANCIS, G. W. — gas, Union Oil Company Of California, Hansford County, 126 thousand reported
TUNNELL, A. R. 59 — oil, Union Oil Company Of California, Van Zandt County, 125 thousand reported
TAYLOR, J. T. 33 — oil, Union Oil Company Of California, Van Zandt County, 125 thousand reported
NIEBUHR, A.L. — gas, Union Oil Company Of California, Jackson County, 124 thousand reported
MADDOX, J. W. -C-2- — oil, Union Oil Company Of California, Montague County, 124 thousand reported
MILLER, I. D. 34 — oil, Union Oil Company Of California, Van Zandt County, 124 thousand reported
BRAEMAR — oil, Union Oil Company Of California, Gaines County, 123 thousand reported
FOSTER, W. L., JR. -B- — oil, Union Oil Company Of California, Sterling County, 123 thousand reported
STITT, CHRISTOVA — oil, Union Oil Company Of California, Terry County, 120 thousand reported
SWAIN, W. F. 9 — oil, Union Oil Company Of California, Van Zandt County, 120 thousand reported
SWAIN, W.F. 14 — oil, Union Oil Company Of California, Van Zandt County, 120 thousand reported
PARKER, J. E. -N- — oil, Union Oil Company Of California, Andrews County, 119 thousand reported
WELLS 47 — oil, Union Oil Company Of California, Van Zandt County, 118 thousand reported
SPACEK, FRANK — oil, Union Oil Company Of California, Jackson County, 118 thousand reported
CRIM, J. R. 16 — oil, Union Oil Company Of California, Van Zandt County, 118 thousand reported
STOKER, K. ET UX "C" — oil, Union Oil Company Of California, Garza County, 118 thousand reported
PARKER, J. E. -G- — oil, Union Oil Company Of California, Andrews County, 112 thousand reported
PETERS, R. H. 29 — oil, Union Oil Company Of California, Van Zandt County, 110 thousand reported
YORK, ELLA -102- — oil, Union Oil Company Of California, Van Zandt County, 110 thousand reported
PARKER, J. E., -G- — oil, Union Oil Company Of California, Andrews County, 109 thousand reported
VAUGHAN, R. L. — oil, Union Oil Company Of California, Crockett County, 108 thousand reported
CRADDOCK — oil, Union Oil Company Of California, Andrews County, 106 thousand reported
MOSS, PAUL -C- — oil, Union Oil Company Of California, Ector County, 106 thousand reported
MAXFIELD, A. G. 38 — oil, Union Oil Company Of California, Van Zandt County, 106 thousand reported
TOAD — oil, Union Oil Company Of California, Ector County, 103 thousand reported
PARKER-STATE — oil, Union Oil Company Of California, Andrews County, 103 thousand reported
PARKER-STATE — oil, Union Oil Company Of California, Andrews County, 101 thousand reported
WHITE, W. H. 501 — oil, Union Oil Company Of California, Van Zandt County, 99 thousand reported
CROSBY STATE — oil, Union Oil Company Of California, Andrews County, 98 thousand reported
CRIM, J.F. 16 — gas, Union Oil Company Of California, Van Zandt County, 98 thousand reported
IVERSON DEEP — oil, Union Oil Company Of California, Andrews County, 95 thousand reported
HALAMICEK, J.M. — oil, Union Oil Company Of California, Jackson County, 94 thousand reported
CRIM, J. F. 16 — oil, Union Oil Company Of California, Van Zandt County, 94 thousand reported
CRAVENS, J. R. — oil, Union Oil Company Of California, Jackson County, 94 thousand reported
DEFORD UNIT A/C #2 — oil, Union Oil Company Of California, Andrews County, 94 thousand reported
THOMPSON, I. W. 401 — oil, Union Oil Company Of California, Van Zandt County, 92 thousand reported
PARKER, J. E. 'X" — oil, Union Oil Company Of California, Andrews County, 92 thousand reported
TREES ESTATE "12" — oil, Union Oil Company Of California, Pecos County, 90 thousand reported
PARKER, J. E. -D- — oil, Union Oil Company Of California, Andrews County, 90 thousand reported
LEONARD, J. H. 30 — oil, Union Oil Company Of California, Van Zandt County, 90 thousand reported
NIEBUHR, A.L. — oil, Union Oil Company Of California, Jackson County, 88 thousand reported
MAURTIZ, T.N. — gas, Union Oil Company Of California, Jackson County, 88 thousand reported
PARKER, J.E. "V" — oil, Union Oil Company Of California, Andrews County, 88 thousand reported
PARKER, J. E. "E2" — oil, Union Oil Company Of California, Andrews County, 87 thousand reported
MORRISON, MARY T., -E- — gas, Union Oil Company Of California, Roberts County, 87 thousand reported
JOHNSON, W. D., JR., ETAL — oil, Union Oil Company Of California, Loving County, 86 thousand reported
WHITE, W. H. 504 — oil, Union Oil Company Of California, Van Zandt County, 86 thousand reported
BELL, C. M., UNIT — gas, Union Oil Company Of California, Reeves County, 86 thousand reported
COWDEN, JERRY — oil, Union Oil Company Of California, Crane County, 85 thousand reported
PARKER, J.E. "C" — oil, Union Oil Company Of California, Andrews County, 85 thousand reported
FULK, MONTGOMERY — gas, Union Oil Company Of California, Pecos County, 85 thousand reported
EASTER DEEP — oil, Union Oil Company Of California, Andrews County, 84 thousand reported
PARKER, J. E. "AD" — oil, Union Oil Company Of California, Andrews County, 83 thousand reported
FORD -C- — oil, Union Oil Company Of California, Andrews County, 83 thousand reported
PARKER, J. E. "Q" — oil, Union Oil Company Of California, Andrews County, 82 thousand reported
UNIVERSITY (M) -BB- — oil, Union Oil Company Of California, Crockett County, 82 thousand reported
THOMPSON, I. W. 401 — oil, Union Oil Company Of California, Van Zandt County, 82 thousand reported
PARKER, J.E. "P" — oil, Union Oil Company Of California, Andrews County, 81 thousand reported
ANTELOPE UNIVERSITY — oil, Union Oil Company Of California, Andrews County, 80 thousand reported
PRICE ESTATE UNIT #1 — gas, Union Oil Company Of California, Pecos County, 80 thousand reported
FOWLER, W.B. — oil, Union Oil Company Of California, Jackson County, 80 thousand reported
UNIVERSITY -5- — oil, Union Oil Company Of California, Andrews County, 79 thousand reported
UNIVERSITY "JC" — oil, Union Oil Company Of California, Andrews County, 78 thousand reported
EVERSBERG, C. R. — oil, Union Oil Company Of California, Jackson County, 76 thousand reported
MAGERS, A. F. 18 — oil, Union Oil Company Of California, Van Zandt County, 76 thousand reported
DOELLING, BESSIE LOU — oil, Union Oil Company Of California, Andrews County, 76 thousand reported
WOODRUFF — oil, Union Oil Company Of California, Hockley County, 76 thousand reported
WAYNE WEST RANCH "B" — gas, Union Oil Company Of California, Crockett County, 75 thousand reported
ARGO STATE — oil, Union Oil Company Of California, Andrews County, 74 thousand reported
NIEBUHR, A. L. — oil, Union Oil Company Of California, Jackson County, 74 thousand reported
SWAIN, O. L. 11 "B" — oil, Union Oil Company Of California, Van Zandt County, 74 thousand reported
TOAD -A- — oil, Union Oil Company Of California, Ector County, 73 thousand reported
POWER, JAMES — oil, Union Oil Company Of California, Jackson County, 72 thousand reported
WHITE, R. V. 502 — oil, Union Oil Company Of California, Van Zandt County, 72 thousand reported
BEAN CONSOLIDATED — oil, Union Oil Company Of California, Crockett County, 71 thousand reported
WHITE, W. H. 501 — oil, Union Oil Company Of California, Van Zandt County, 71 thousand reported
UNIVERSITY (M) -AA- — oil, Union Oil Company Of California, Crockett County, 69 thousand reported
CRAVENS, E.T. — gas, Union Oil Company Of California, Jackson County, 68 thousand reported
SWAIN, W. 14 — oil, Union Oil Company Of California, Van Zandt County, 68 thousand reported
TUNNELL, I. P. 300 — oil, Union Oil Company Of California, Van Zandt County, 68 thousand reported
HODGSON, MARGARET — gas, Union Oil Company Of California, Hemphill County, 67 thousand reported
PARKER, J. E. -A- — oil, Union Oil Company Of California, Andrews County, 66 thousand reported
MOSS, PAUL, ETAL -B- TRACT 1 — oil, Union Oil Company Of California, Ector County, 66 thousand reported
PHILLIPS UNIVERSITY -GG- — oil, Union Oil Company Of California, Andrews County, 65 thousand reported
FOWLER, E. L. 302 — oil, Union Oil Company Of California, Van Zandt County, 65 thousand reported
COWDEN, JERRY — oil, Union Oil Company Of California, Crane County, 64 thousand reported
FOREST — oil, Union Oil Company Of California, Loving County, 64 thousand reported
PARKER, J. E. -C- — oil, Union Oil Company Of California, Andrews County, 63 thousand reported
MAXFIELD, A. G. 38 — oil, Union Oil Company Of California, Van Zandt County, 63 thousand reported
J. E. PARKER "D" UNIT — oil, Union Oil Company Of California, Andrews County, 62 thousand reported
UNIVERSITY "12-E" — oil, Union Oil Company Of California, Andrews County, 62 thousand reported
VAUGHAN, R. L. — oil, Union Oil Company Of California, Crockett County, 62 thousand reported
MADDOX, J. W. -B- — oil, Union Oil Company Of California, Montague County, 62 thousand reported
MAXFIELD, A. G. 38 — oil, Union Oil Company Of California, Van Zandt County, 62 thousand reported
MAURITZ, T. N. — gas, Union Oil Company Of California, Jackson County, 61 thousand reported
PETERS, R. 29 — oil, Union Oil Company Of California, Van Zandt County, 61 thousand reported
UNIVERSITY "36" — oil, Union Oil Company Of California, Winkler County, 61 thousand reported
BILLINGTON, HARRY — oil, Union Oil Company Of California, Martin County, 61 thousand reported
LEONARD, J. H. 30 — oil, Union Oil Company Of California, Van Zandt County, 61 thousand reported
SWAIN, W. F. 36 — oil, Union Oil Company Of California, Van Zandt County, 60 thousand reported
PARKER, J. E. "E" UNIT — oil, Union Oil Company Of California, Andrews County, 60 thousand reported
SOMERLED — oil, Union Oil Company Of California, Gaines County, 60 thousand reported
MADDOX, J. W. -A- — oil, Union Oil Company Of California, Montague County, 60 thousand reported
UNIVERSITY -37- — oil, Union Oil Company Of California, Winkler County, 59 thousand reported
PARKER, J. E. -V- — oil, Union Oil Company Of California, Andrews County, 59 thousand reported
MEEK, J. E. — gas, Union Oil Company Of California, Hemphill County, 59 thousand reported
BOYD, R. W. — oil, Union Oil Company Of California, Scurry County, 58 thousand reported
BRACKEN, J. A. 503 — oil, Union Oil Company Of California, Van Zandt County, 58 thousand reported
SHIRLEY, M. F. 107 — oil, Union Oil Company Of California, Van Zandt County, 58 thousand reported
CRIM, R, C, 28 — oil, Union Oil Company Of California, Van Zandt County, 58 thousand reported
ACTON, PAMELA — gas, Union Oil Company Of California, Crockett County, 58 thousand reported
FORD — oil, Union Oil Company Of California, Andrews County, 57 thousand reported
PARKER, J. E. "Z" — oil, Union Oil Company Of California, Andrews County, 56 thousand reported
PARKER, J.E., "V" — oil, Union Oil Company Of California, Andrews County, 56 thousand reported
ELSINORE "A" — gas, Union Oil Company Of California, Pecos County, 55 thousand reported
PARKER, J. E. -T- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 54 thousand reported
GILBERT, H. C. 43 — oil, Union Oil Company Of California, Van Zandt County, 54 thousand reported
UNIVERSITY -JB- — oil, Union Oil Company Of California, Andrews County, 54 thousand reported
CRIM, B. E. 15 — oil, Union Oil Company Of California, Van Zandt County, 54 thousand reported
COWDEN, E. W. — oil, Union Oil Company Of California, Winkler County, 54 thousand reported
SWAIN, W. F. 9 — oil, Union Oil Company Of California, Van Zandt County, 54 thousand reported
PARKER, J. E. -G- — oil, Union Oil Company Of California, Andrews County, 54 thousand reported
SWAIN, W. F. 36 — oil, Union Oil Company Of California, Van Zandt County, 53 thousand reported
PARKER, J. E. -P- — oil, Union Oil Company Of California, Andrews County, 52 thousand reported

Production figures are as reported to the Railroad Commission of Texas. Values shown on lease pages are estimates produced by fitting a decline curve to that reported history; they are not offers or appraisals.