TEXAS · WELLS · IRION COUNTY · UNIVERSITY 43 "A" LEASE · API 42-235-34899 · DISTRICT 6E
University 43 A #0804H
Irion County · Lin (Wolfcamp) field · Producing · Horizontal
University 43 A #0804H (API 42-235-34899) is a horizontal well in Irion County operated by Sem Operating Company LLC, completed May 15, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued November 18, 2011, permitted to 6,804 ft.
It was permitted by Eog Resources, Inc. and has since transferred to Sem Operating Company LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its lease has reported 1.15M barrels of oil and 16.7M mcf of gas since April 2012, last reporting volume in April 2026. The lease carries 13 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 23, 2026
- Permits on file
- 404
- Phone
- (713) 395-3000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sem Operating Company LLC |
| Production reports | Sem Operating Company LLCthrough Apr 2026 |
| Latest permit | EOG Resources, Inc.Nov 18, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,804
- total depth, ft
- 1
- permits on file
- Nov 18, 2011
- last permit issued
- May 15, 2012
- completed
- 1.15M
- cumulative oil, bbl
- 16.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2012 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 15, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University 43 "A" O-9-17809 | Lin (Wolfcamp) | Sem Operating Company LLC | 13 | 1.15M | 16.7M | Apr 2012 – Apr 2026 |
Gas, mcf lease total
Last 12 months 2,203,484 · prior 12 2,453,804(-10%)
Oil, barrels lease total
Last 12 months 28,723 · prior 12 42,673(-33%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EOG Resources, Inc.Apr 2012 → May 2016
- 2Sem Operating Company LLCJun 2016 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 728100-99 | Drill | EOG Resources, Inc. | Nov 10, 2011 | Nov 18, 2011 | Jan 13, 2012 | 6,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 15, 2012 | University 43 A O-9-17809 | Lin (Wolfcamp) | Sem Operating Company LLC | Producing | 6,804 |
Formation tops
As filed on W-2/G-1. Subsea from 2,617 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,140 | 14,741 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 834 | 12.25 | 400 S |
| 5.5 | 14,796 | 8.75 | 3,105 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | May 8, 2013 | Jun 5, 2012 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Mar 3, 2015. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Spraberry, Dean, Wolfcamp | TIFF | 0 to 6,921 | Mar 3, 2015run Jan 19, 2012 | 3.43 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-235-34899 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-235-34899 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/23534899, documented in the API reference.