SEM OPERATING COMPANY LLC, Upton County, Texas
Mineral interests on the Upton County Appraisal District's 2026 certified roll.
The same name and mailing city appear in 2 other covered counties. Irion County (33 interests) · Reagan County (48 interests). A shared name and mailing city are strong evidence that this is the same owner. They are not proof, and the appraisal districts do not share an identifier.
This is one county, not this owner’s holdings. The site holds mineral rolls for 114 of 254 Texas counties, so SEM OPERATING COMPANY LLC may hold interests elsewhere that this page cannot show. Absence is not evidence.
The ground
The Original Land Survey abstracts this owner holds an interest in, on the Commission’s own survey grid. Click any outline to open that abstract.
23 of 23 interests are on the map, across 4 abstracts. Several interests often sit in one abstract, so there are fewer outlines than rows in the table below.
Interests
| Property | Abstract | Type | Interest | Appraised |
|---|---|---|---|---|
| 400997 | A-179 | Working interest | 76% | $368,700 |
| 401071 | A-178 | Working interest | 76.61% | $330,370 |
| 400686 | A-877 | Working interest | 76% | $318,640 |
| 400687 | A-877 | Working interest | 76% | $264,020 |
| 400670 | A-179 | Working interest | 76.58% | $247,670 |
| 400682 | A-877 | Working interest | 75.98% | $236,640 |
| 400672 | A-179 | Working interest | 76.67% | $229,580 |
| 400998 | A-179 | Working interest | 76% | $223,040 |
| 400683 | A-877 | Working interest | 75.98% | $218,430 |
| 400675 | A-179 | Working interest | 76.02% | $209,430 |
| 400999 | A-179 | Working interest | 76% | $209,380 |
| 400668 | A-179 | Working interest | 76.56% | $197,170 |
| 400674 | A-179 | Working interest | 76.02% | $195,770 |
| 400685 | A-877 | Working interest | 76% | $191,180 |
| 401000 | A-877 | Working interest | 76.46% | $187,760 |
| 401068 | A-178 | Working interest | 76.59% | $183,490 |
| 400669 | A-179 | Working interest | 76.35% | $146,320 |
| 400667 | A-179 | Working interest | 76% | $132,000 |
| 400676 | A-179 | Working interest | 76.02% | $118,380 |
| 400673 | A-179 | Working interest | 76.83% | $101,230 |
| 400681 | A-137 | Working interest | 76% | $91,040 |
| 400671 | A-179 | Working interest | 76.68% | $87,260 |
| 400684 | A-877 | Working interest | 76.59% | $77,980 |