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SEM OPERATING COMPANY LLC

RRC operator #766370 · permits 2026-08-26 · completions 2026-02-13 · well status 2026-09

SEM OPERATING COMPANY LLC is registered with the Railroad Commission of Texas as operator #766370. It holds 480 wellbores on record, 345 of them producing. It has 54 drilling permits on record across 3 Texas counties (Reagan, Irion, Crockett), most recently on 2026-07-09. 54 of those permits are horizontal wells — the kind that can drain minerals a mile or more from the surface location.

Drilling permits
54
18 last year
Wells on record
480
345 producing
Horizontal permits
54
Counties
3
Pro

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Landmen and royalty owners follow one operator across every county it works in. Pro watches this operator's filings and emails you the day a new drilling permit shows up in the Railroad Commission feed.

Recent permits by SEM OPERATING COMPANY LLC

FiledCountyLeaseTypeFlags
2026-07-09 Irion UNIVERSITY 40 Drill Horiz
2026-07-07 Crockett UNIVERSITY 40 Drill Horiz
2026-07-07 Crockett UNIVERSITY 40 Drill Horiz
2026-07-07 Crockett UNIVERSITY 40 Drill Horiz
2026-07-07 Crockett UNIVERSITY 40 Drill Horiz
2026-06-08 Irion UNIVERSITY 40 E Drill Horiz
2026-06-08 Irion UNIVERSITY 40 E Drill Horiz
2026-05-06 Irion UNIVERSITY 40 E Drill Horiz
2026-05-06 Irion UNIVERSITY 40 E Drill Horiz
2026-04-02 Irion UNIVERSITY 40 Drill Horiz
2026-04-02 Irion UNIVERSITY 40 Drill Horiz
2026-04-02 Irion UNIVERSITY 40 Drill Horiz
2026-03-10 Irion UNIVERSITY 40D Drill Horiz
2026-03-10 Irion UNIVERSITY 40D Drill Horiz
2026-03-02 Irion UNIVERSITY 40 Drill Horiz
2026-03-02 Irion UNIVERSITY 40 Drill Horiz
2026-03-02 Irion UNIVERSITY 40 Drill Horiz
2026-03-02 Irion UNIVERSITY 40 Drill Horiz
2023-11-29 Reagan UNIVERSITY 10-11 Drill Horiz
2023-11-29 Reagan UNIVERSITY 10-11 Drill Horiz
2023-11-29 Reagan UNIVERSITY 10-11 Drill Horiz
2023-11-29 Reagan UNIVERSITY 10-11 Drill Horiz
2022-11-28 Reagan UNIVERSITY 9C Drill Horiz
2022-11-28 Reagan UNIVERSITY 2-58 Drill Horiz
2022-11-28 Reagan UNIVERSITY 2-58 Drill Horiz
2022-11-28 Reagan UNIVERSITY 2-58 Drill Horiz
2022-11-28 Reagan UNIVERSITY 2-58 Drill Horiz
2021-12-22 Crockett UNIVERSITY 40 Drill Horiz
2021-12-22 Crockett UNIVERSITY 40 Drill Horiz
2021-12-22 Crockett UNIVERSITY 40 Drill Horiz

Where SEM OPERATING COMPANY LLC operates

CountyPermitsMost recent
Reagan County252023-11-29
Irion County212026-07-09
Crockett County82026-07-07

Fields SEM OPERATING COMPANY LLC holds wells in

FieldWellsProducing
LIN (WOLFCAMP)363317
SPRABERRY (TREND AREA)7227
FORT TRINIDAD (GLEN ROSE UPPER)360
FORT TRINIDAD EAST (BUDA)30
SPRABERRY (TREND AREA)10
LAVAN (WOLFCAMP)11
BIG LAKE10
WILDCAT10

Permits filed by year

YearPermitsHorizontal
20261818
202344
202255
20211313
202022
201966
201855
201711

The permit feed carries a rolling recent window, so early years are partial. Well counts above come from the full current wellbore file.

Watch a tract near SEM OPERATING COMPANY LLC — freeAll Texas operators
This report compiles and structures publicly available oil & gas records from the Railroad Commission of Texas — drilling permits, completions, well status, and lease production. We monitor development activity and public filings near a location you tell us about; we do NOT determine mineral ownership, confirm what you own, or provide legal, tax, or investment advice. Nothing here replaces a title opinion, a landman, or reading the official RRC filing. Activity is mapped to the operator-filed permit surface location (NAD27, precision disclaimed by the RRC), not your mineral tract. Data is current only as of the source vintage shown on the page. Our total liability for any report is capped at the amount you paid for it. Found an error? Reply to any email and a human will correct it.