Oil and gas leases in Union Oil Company Of California — page 4

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 4 of 4

SPACEK, FRANK — oil, Union Oil Company Of California, Jackson County, 7 thousand reported
WALLACE, T. J. 402 — oil, Union Oil Company Of California, Van Zandt County, 7 thousand reported
NIEBUHR, A.L. — gas, Union Oil Company Of California, Jackson County, 7 thousand reported
PARKER, J.E. -F- — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
PARKER, BESSIE O. -11- — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
WALLACE, T. J. 402 — oil, Union Oil Company Of California, Van Zandt County, 7 thousand reported
CRIM, B. E. 15 — oil, Union Oil Company Of California, Van Zandt County, 7 thousand reported
THOMPSON, I. W. 401 — gas, Union Oil Company Of California, Van Zandt County, 7 thousand reported
PHILLIPS UNIVERSITY DD — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
PARKER, J. E., -S- — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
PARKER, J.E. "E-3" — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
J. E. PARKER -AB- — oil, Union Oil Company Of California, Andrews County, 7 thousand reported
CRIM, J. F. 16 — oil, Union Oil Company Of California, Van Zandt County, 7 thousand reported
PARKER, BESSIE O. "11" — oil, Union Oil Company Of California, Andrews County, 6 thousand reported
MORRIS, W. E. 62 — oil, Union Oil Company Of California, Van Zandt County, 6 thousand reported
PARKER, J. E. -Q- — oil, Union Oil Company Of California, Andrews County, 6 thousand reported
SMITH, L. A. 103 — oil, Union Oil Company Of California, Van Zandt County, 6 thousand reported
COWDEN, ALLEN — oil, Union Oil Company Of California, Andrews County, 6 thousand reported
PARKER,J.E. — oil, Union Oil Company Of California, Andrews County, 6 thousand reported
WALKER — oil, Union Oil Company Of California, Andrews County, 6 thousand reported
EVANS, N.T. — gas, Union Oil Company Of California, Reeves County, 6 thousand reported
BRAWNER -10- — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
GILBERT, H.C. 43 — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
CRIM, R. 28 — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
PARKER, J. E. -Q- — oil, Union Oil Company Of California, Andrews County, 5 thousand reported
STEWARD, G. W. 68 — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
CRIM, J. F. 16 — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
SHIVERS, J. R. 12 — oil, Union Oil Company Of California, Van Zandt County, 5 thousand reported
ANTHONY, H. F. — gas, Union Oil Company Of California, Reeves County, 5 thousand reported
PARKER, J. E. "F" — oil, Union Oil Company Of California, Andrews County, 5 thousand reported
PARKER, J. E. "E2" — oil, Union Oil Company Of California, Andrews County, 5 thousand reported
PARKER, J. E. -P- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 4 thousand reported
PARKER, BESSIE O — oil, Union Oil Company Of California, Andrews County, 4 thousand reported
J. E. PARKER -AC- — oil, Union Oil Company Of California, Andrews County, 4 thousand reported
NIEBUHR, A.L. — oil, Union Oil Company Of California, Jackson County, 4 thousand reported
UNIVERSITY JF — oil, Union Oil Company Of California, Andrews County, 4 thousand reported
PARKER, J. E. "C" — oil, Union Oil Company Of California, Andrews County, 4 thousand reported
WIESE, DELLA — oil, Union Oil Company Of California, Jackson County, 4 thousand reported
DILLARD -A- — oil, Union Oil Company Of California, Howard County, 4 thousand reported
WHITE, R. V. 502 — oil, Union Oil Company Of California, Van Zandt County, 4 thousand reported
CRAVENS, J. R. — oil, Union Oil Company Of California, Jackson County, 4 thousand reported
SWAIN, W.F. 9 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
MAURITZ, T. N. — oil, Union Oil Company Of California, Jackson County, 3 thousand reported
HALLIDAY, H.J. — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
COWDEN, E. P. "T" — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
FOSTER, W. L. JR. "B" — oil, Union Oil Company Of California, Sterling County, 3 thousand reported
PARKER, J. E. -V- — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
FOWLER, W. B. — oil, Union Oil Company Of California, Jackson County, 3 thousand reported
PARKER, J. E. -H- — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
CRAVENS, E.T. — oil, Union Oil Company Of California, Jackson County, 3 thousand reported
WHITE, C. 61 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
DOWDLE, L. A. 205 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
WIESE, DELLA — oil, Union Oil Company Of California, Jackson County, 3 thousand reported
PARKER STATE — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
MASTEN "G" — oil, Union Oil Company Of California, Cochran County, 3 thousand reported
SMITH, HUGHES — oil, Union Oil Company Of California, Cochran County, 3 thousand reported
PARKER, J.E. "E-2" — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
STITT, CHRISTOVA — oil, Union Oil Company Of California, Terry County, 3 thousand reported
DILLARD "B" — oil, Union Oil Company Of California, Howard County, 3 thousand reported
FOWLER 303 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
BESSIE O. PARKER -11- — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
CONSOLIDATION 79 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
UNIVERSITY "36" — oil, Union Oil Company Of California, Winkler County, 3 thousand reported
CHURCH LOT 108 — oil, Union Oil Company Of California, Van Zandt County, 3 thousand reported
PARKER, J. E. -C- (AMOCO) — oil, Union Oil Company Of California, Andrews County, 3 thousand reported
CLEVELAND, WAYNE — oil, Union Oil Company Of California, Lipscomb County, 2 thousand reported
PERKINS — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
KURETSCH, R. — oil, Union Oil Company Of California, Jackson County, 2 thousand reported
MASTEN "B" — oil, Union Oil Company Of California, Cochran County, 2 thousand reported
WELLS, R. L. 47 — oil, Union Oil Company Of California, Van Zandt County, 2 thousand reported
PARKER, J. E. -AA- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
UNIVERSITY -12-E- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
COWDEN, JERRY — oil, Union Oil Company Of California, Crane County, 2 thousand reported
PARKER, J. E. -E- UNIT — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
HALLIDAY, H.J. — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
UNIVERSITY -12-E- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
HAMONS, DAN — oil, Union Oil Company Of California, Jackson County, 2 thousand reported
COFFMAN, K. A. — oil, Union Oil Company Of California, Cochran County, 2 thousand reported
PARKER, J.E. -AC- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
PARKER, J. E. -Q- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
PARKER, J.E. -Q- — oil, Union Oil Company Of California, Andrews County, 2 thousand reported
BLACKSTOCK, FRANK 106 — oil, Union Oil Company Of California, Van Zandt County, 2 thousand reported
J. F. CRIM 16 — oil, Union Oil Company Of California, Van Zandt County, 2 thousand reported
CRIM, R.C. 28 — oil, Union Oil Company Of California, Van Zandt County, 2 thousand reported
MASTEN "C" — oil, Union Oil Company Of California, Cochran County, 2 thousand reported
FOSTER "11-C" — oil, Union Oil Company Of California, Ector County, 2 thousand reported
MAXFIELD, A. G. 38 — oil, Union Oil Company Of California, Van Zandt County, 2 thousand reported
MURPHREE, J. J. 31 — oil, Union Oil Company Of California, Van Zandt County, 1 thousand reported
WHITE, R. V. 500 — oil, Union Oil Company Of California, Van Zandt County, 1 thousand reported
PARKER-STATE — oil, Union Oil Company Of California, Andrews County, 1 thousand reported
EVANS, N. T. — oil, Union Oil Company Of California, Reeves County, 1 thousand reported
CRAVENS, J. R. — gas, Union Oil Company Of California, Jackson County, 1 thousand reported
FULK, MONTGOMERY — gas, Union Oil Company Of California, Pecos County, 1 thousand reported
WHITE, C. 61 — oil, Union Oil Company Of California, Van Zandt County, 1 thousand reported
E.W. COWDEN UNIT — gas, Union Oil Company Of California, Winkler County, 904 reported
NIEBUHR, A. L. — oil, Union Oil Company Of California, Jackson County, 888 reported
NEWTON — oil, Union Oil Company Of California, Howard County, 848 reported
SPACEK, FRANK — oil, Union Oil Company Of California, Jackson County, 786 reported
HARTT -128- — oil, Union Oil Company Of California, Van Zandt County, 697 reported
MAURITZ, T. N. — oil, Union Oil Company Of California, Jackson County, 602 reported
MAXFIELD, A. G. 38 — oil, Union Oil Company Of California, Van Zandt County, 556 reported
WIESE, DELLA — oil, Union Oil Company Of California, Jackson County, 459 reported
HARRIS — oil, Union Oil Company Of California, Crane County, 429 reported
HUGHES "A" — oil, Union Oil Company Of California, Reagan County, 347 reported
DEFORD UNIT A/C #2 — oil, Union Oil Company Of California, Andrews County, 283 reported
ANTHONY, H. F. — gas, Union Oil Company Of California, Reeves County, 273 reported
MILLARD — oil, Union Oil Company Of California, Ector County, 256 reported
VAN SHALLOW UNIT — oil, Union Oil Company Of California, Van Zandt County, 224 reported
HALAMICEK, J.M. — oil, Union Oil Company Of California, Jackson County, 211 reported
FOWLER, B. M. 303 — oil, Union Oil Company Of California, Van Zandt County, 167 reported
DOWDLE, L. A. 205 — oil, Union Oil Company Of California, Van Zandt County, 164 reported
SOUTHLAND LD & CATTLE CO UNIT — gas, Union Oil Company Of California, Rains County, 154 reported
FASKEN BLOCK "BA" — oil, Union Oil Company Of California, Andrews County, 146 reported
PETERS, R.H. 29 — oil, Union Oil Company Of California, Van Zandt County, 135 reported
RAY, S. R. — oil, Union Oil Company Of California, Van Zandt County, 57 reported
WIESE, DELLA — oil, Union Oil Company Of California, Jackson County, 55 reported
TRINITY MATERIALS — gas, Union Oil Company Of California, Henderson County, 2 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.