Oil and gas leases in Sem Operating Company LLC

Sem Operating Company LLC is a Texas operator, Commission number 766370, with 88 leases reporting production across 6 counties. 31 of them are oil leases and 57 are gas leases. Between them they carry 139 wellbores. Reported volumes run from June 2010 to August 2026 and come to 10.9 million barrels of oil and 16.8 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 Sem Operating Company LLC

How many oil and gas leases are in Sem Operating Company LLC?
Sem Operating Company LLC has 88 oil and gas leases with production reported to the Railroad Commission of Texas, as of August 2026.
How much oil and gas has Sem Operating Company LLC produced?
Leases in Sem Operating Company LLC have reported 10,892,453 barrels of oil (bbl) and 16,847,428 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between June 2010 and August 2026.
How much are mineral rights in Sem Operating Company LLC worth?
There is no single figure: what a mineral or royalty interest in Sem Operating Company LLC is worth depends on the individual lease, its decline, and the share the owner holds. Each of the 88 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.

Counties here

Railroad Commission districts

Leases

  • UNIVERSITY 2-58 — oil, Sem Operating Company LLC, Reagan County, 2.8 million reported
  • UNIVERSITY 38-40 — oil, Sem Operating Company LLC, Irion County, 2.4 million reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 1.6 million reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 1.2 million reported
  • LINTHICUM B — oil, Sem Operating Company LLC, Irion County, 1.1 million reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 937 thousand reported
  • UNIVERSITY 10-11 — oil, Sem Operating Company LLC, Reagan County, 852 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 737 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 598 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 587 thousand reported
  • LINTHICUM C — oil, Sem Operating Company LLC, Irion County, 573 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 566 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 519 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 450 thousand reported
  • ADAMS, R. C. — gas, Sem Operating Company LLC, Houston County, 435 thousand reported
  • EASTHAM STATE PRISON FARM A — gas, Sem Operating Company LLC, Houston County, 425 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 422 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 409 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 396 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 386 thousand reported
  • ADAMS, CHESTER — gas, Sem Operating Company LLC, Houston County, 385 thousand reported
  • VON ROSENBERG — gas, Sem Operating Company LLC, Houston County, 369 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 357 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 354 thousand reported
  • EAGLEHEAD B WEST — oil, Sem Operating Company LLC, Reagan County, 352 thousand reported
  • CHANDLER — oil, Sem Operating Company LLC, Houston County, 352 thousand reported
  • EAGLEHEAD B EAST — oil, Sem Operating Company LLC, Reagan County, 346 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 332 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 305 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 273 thousand reported
  • HYDE, MARTY — gas, Sem Operating Company LLC, Houston County, 253 thousand reported
  • MOSLEY — gas, Sem Operating Company LLC, Houston County, 253 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 249 thousand reported
  • NOELKE B — oil, Sem Operating Company LLC, Irion County, 232 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 224 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 216 thousand reported
  • MAYER A — oil, Sem Operating Company LLC, Irion County, 194 thousand reported
  • EAST TURNER NORTH D — oil, Sem Operating Company LLC, Reagan County, 193 thousand reported
  • EAST TURNER NORTH D2 — oil, Sem Operating Company LLC, Reagan County, 192 thousand reported
  • GAIL KING — gas, Sem Operating Company LLC, Houston County, 187 thousand reported
  • EAST TURNER NORTH C2 — oil, Sem Operating Company LLC, Reagan County, 183 thousand reported
  • HANLEY — gas, Sem Operating Company LLC, Houston County, 182 thousand reported
  • HAM C1 — oil, Sem Operating Company LLC, Reagan County, 180 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 179 thousand reported
  • MILLER — gas, Sem Operating Company LLC, Houston County, 179 thousand reported
  • CHANDLER — gas, Sem Operating Company LLC, Houston County, 170 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 169 thousand reported
  • DAVID — gas, Sem Operating Company LLC, Madison County, 163 thousand reported
  • CHESTER ADAMS — gas, Sem Operating Company LLC, Houston County, 159 thousand reported
  • MILES TIMBER — gas, Sem Operating Company LLC, Houston County, 156 thousand reported
  • EAST TURNER NORTH A2 — oil, Sem Operating Company LLC, Reagan County, 149 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 147 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 145 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 138 thousand reported
  • RUFFINO — gas, Sem Operating Company LLC, Madison County, 137 thousand reported
  • HAM B1 — oil, Sem Operating Company LLC, Reagan County, 136 thousand reported
  • EAST TURNER NORTH C — oil, Sem Operating Company LLC, Reagan County, 130 thousand reported
  • JONES — gas, Sem Operating Company LLC, Houston County, 127 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 122 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 120 thousand reported
  • HYDE — gas, Sem Operating Company LLC, Houston County, 115 thousand reported
  • HYDE, MARTY — gas, Sem Operating Company LLC, Houston County, 113 thousand reported
  • BLAIR A — gas, Sem Operating Company LLC, Houston County, 111 thousand reported
  • FERGUSON PRISON UNIT — gas, Sem Operating Company LLC, Madison County, 108 thousand reported
  • EAST TURNER NORTH B — oil, Sem Operating Company LLC, Reagan County, 97 thousand reported
  • EAST TURNER NORTH A — oil, Sem Operating Company LLC, Reagan County, 96 thousand reported
  • TOLBERT — gas, Sem Operating Company LLC, Houston County, 92 thousand reported
  • ELLIOTT — gas, Sem Operating Company LLC, Houston County, 86 thousand reported
  • MAYER A1 — oil, Sem Operating Company LLC, Irion County, 82 thousand reported
  • LITTLE — gas, Sem Operating Company LLC, Houston County, 78 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 78 thousand reported
  • BYERS — oil, Sem Operating Company LLC, Houston County, 73 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 71 thousand reported
  • THOMAS — gas, Sem Operating Company LLC, Madison County, 70 thousand reported
  • HANSON — oil, Sem Operating Company LLC, Houston County, 56 thousand reported
  • GARRISON — gas, Sem Operating Company LLC, Houston County, 55 thousand reported
  • EASTHAM STATE PRISON FARM — gas, Sem Operating Company LLC, Houston County, 48 thousand reported
  • FERGUSON PRISON UNIT — oil, Sem Operating Company LLC, Madison County, 46 thousand reported
  • MILLER — oil, Sem Operating Company LLC, Houston County, 33 thousand reported
  • THOMAS — oil, Sem Operating Company LLC, Madison County, 30 thousand reported
  • MOSLEY — oil, Sem Operating Company LLC, Houston County, 29 thousand reported
  • BARRETT — gas, Sem Operating Company LLC, Houston County, 26 thousand reported
  • CRESPI — gas, Sem Operating Company LLC, Houston County, 20 thousand reported
  • EASTHAM STATE PRISON FARM — oil, Sem Operating Company LLC, Houston County, 15 thousand reported
  • MOSLEY — oil, Sem Operating Company LLC, Houston County, 10 thousand reported
  • BERTA VOGLER — oil, Sem Operating Company LLC, Dawson County, 4 thousand reported
  • UNIVERSITY 38-40 NCT1 — oil, Sem Operating Company LLC, Irion County, 2 thousand reported
  • UNIVERSITY 40 E — oil, Sem Operating Company LLC, Crockett County, 1 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.