SEM OPERATING COMPANY LLC
RRC operator 766370. In the 12 months to Jul 2026, SEM OPERATING COMPANY LLC reported 4.7M barrels of oil and 55.8M MCF of gas on 82 Texas leases: #64 on Extrxct by oil-equivalent volume.
Oil + condensate (BBL per month, last 36 months)
Gas (MCF per month, last 36 months)
Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.
SEM OPERATING COMPANY LLC in brief
SEM OPERATING COMPANY LLC reported 4,690,070 barrels of oil and condensate and 55,764,513 MCF of gas on 82 Texas leases in the 12 months to Jul 2026. That is oil about flat and gas about flat versus the prior 12 months. Its largest counties by oil were Reagan, Irion and Crockett, with Reagan County at 3,932,665 barrels. Its top lease was UNIVERSITY 09C in the LIN (WOLFCAMP) field. It had no new drilling permits in the RRC daily file between October 1 and Oct 14, 2026. Royalty owners paid by SEM OPERATING COMPANY LLC can match the lease number on a check stub to the lease pages below.
Counties
| County | Oil (BBL) | Gas (MCF) |
|---|---|---|
| Reagan | 3,932,665 | 19,248,279 |
| Irion | 549,678 | 27,346,993 |
| Crockett | 152,037 | 8,843,719 |
| Upton | 55,690 | 325,522 |
| Gaines | 0 | 0 |
| Glasscock | 0 | 0 |
Top leases, last 12 months
| Lease | County | Field | Oil (BBL) | Gas (MCF) |
|---|---|---|---|---|
| UNIVERSITY 09C | Reagan | LIN (WOLFCAMP) | 1,105,564 | 6,136,114 |
| UNIVERSITY 9 | Reagan | LIN (WOLFCAMP) | 1,089,477 | 2,412,331 |
| UNIVERSITY 40 | Crockett, Irion | LIN (WOLFCAMP) | 131,658 | 7,924,838 |
| UNIVERSITY 2-58 | Reagan | LIN (WOLFCAMP) | 495,372 | 3,245,831 |
| UNIVERSITY 43 | Irion | LIN (WOLFCAMP) | 204,087 | 3,995,488 |
| MAYER | Irion | LIN (WOLFCAMP) | 60,848 | 4,236,615 |
| UNIVERSITY 10-11 | Reagan | LIN (WOLFCAMP) | 533,193 | 1,127,919 |
| UNIVERSITY 38-40 | Irion | LIN (WOLFCAMP) | 65,209 | 2,605,462 |
| UNIVERSITY 27-34 | Reagan | LIN (WOLFCAMP) | 244,573 | 1,020,277 |
| UNIVERSITY 43 "A" | Irion | LIN (WOLFCAMP) | 26,823 | 2,123,987 |
| NOELKE A | Irion | LIN (WOLFCAMP) | 7,324 | 1,383,392 |
| FAUDREE | Irion | LIN (WOLFCAMP) | 10,489 | 1,355,416 |
| LINTHICUM B | Irion | LIN (WOLFCAMP) | 27,960 | 1,216,875 |
| LINTHICUM C | Irion | LIN (WOLFCAMP) | 9,755 | 1,100,573 |
| UNIVERSITY 38 | Crockett, Irion | LIN (WOLFCAMP) | 19,377 | 846,268 |
| UNIVERSITY LUCY | Irion | LIN (WOLFCAMP) | 10,962 | 867,454 |
| LINTHICUM M | Irion | LIN (WOLFCAMP) | 9,371 | 839,170 |
| UNIVERSITY 2A | Reagan | LIN (WOLFCAMP) | 69,637 | 474,736 |
| MUNSON | Irion | LIN (WOLFCAMP) | 13,635 | 641,517 |
| MAYER A | Irion | LIN (WOLFCAMP) | 10,843 | 656,172 |
| UNIVERSITY 40 C | Crockett | LIN (WOLFCAMP) | 12,410 | 622,906 |
| MUNSON B | Irion | LIN (WOLFCAMP) | 6,689 | 630,310 |
| NEAL | Upton | SPRABERRY (TREND AREA) | 55,690 | 325,522 |
| UNIVERSITY 38 D | Crockett | LIN (WOLFCAMP) | 5,863 | 492,718 |
| LINTHICUM I | Irion | LIN (WOLFCAMP) | 3,991 | 501,663 |
New permits this month
None in the current RRC daily file.
Source: Texas Railroad Commission (data sets, Production Data Query). Data date: RRC Production Data Query dump, extract dated Sep 18, 2026; production through Jul 2026. Jun 2026 and Jul 2026 are provisional: operators file late and amend, so these months usually rise in later releases. Oil = crude oil + condensate (BBL); gas = gas-well gas + casinghead gas (MCF), as reported to RRC. Operator names are as registered with RRC; a lease is credited to its operator of record each month. Methodology.