WELL · 42-055-34790 · DISTRICT 1
Stair O. F. 4HST #4HS
Caldwell County · Luling-Branyon field · Horizontal · Sidetrack
Stair O. F. 4hst #4HS (API 42-055-34790) is a horizontal well in Caldwell County operated by Texas Petroleum Investment CO., completed July 29, 2004.
The RRC has issued 2 drilling permits between 1998 and 2004, permitted to 2,500 ft.
It was permitted by Vintage Petroleum, Inc. and has since transferred to Texas Petroleum Investment CO. on the wellbore schedule.
Completion filings report 6 formation tops, including Austin Chalk, Eagle Ford, Buda, Del Rio.
Its 2 leases have reported 1.05M barrels of oil and 40.4K mcf of gas since January 1993, last reporting in July 2026. The leases carry 32 wells, so these are lease totals, not this well alone.
Operator of record
Texas Petroleum Investment Co.
Permitted by Vintage Petroleum, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 1, 2025
- Permits on file
- 233
- Phone
- (713) 789-9225
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texas Petroleum Investment Co. |
| Production reports | Texas Petroleum Investment Co.through Apr 2026 |
| Latest permit | Vintage Petroleum, Inc.Aug 8, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,500
- total depth, ft
- 2
- permits on file
- Aug 8, 2004
- last permit issued
- Jul 29, 2004
- completed
- 1.05M
- cumulative oil, bbl
- 40.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 29, 2004
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 32 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Stair, O. F. O-1-1105 | Luling-Branyon | Texas Petroleum Investment Co. | 30 | 985K | 40.4K | Jan 1993 – Jul 2026 |
| Stair, O. F. 4HST O-1-14539 | Luling-Branyon | Texas Petroleum Investment Co. | 2 | 62.9K | 0 | Jul 2004 – Jul 2017 |
Oil, barrels lease total
Last 12 months 27,549 · prior 12 33,416(-18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Meridian Oil Production Inc.Jan 1993 → Feb 1996
- 2Meridian Oil Inc.Mar 1996 → Jul 1996
- 3Burlington Resources Oil&gas Co.Aug 1996 → Mar 1997
- 4Vintage Petroleum, Inc.Apr 1997 → Apr 2006
- 5Vintage Petroleum, LLCMay 2006 → Sep 2006
- 6Texas Petroleum Investment Co.Oct 2006 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 549187-99 | Recompletion · sidetrack | Vintage Petroleum, Inc. | Aug 5, 2004 | Aug 8, 2004 | — | 2,500 |
| 477157-99 | Drill | Vintage Petroleum, Inc. | Jun 15, 1998 | Aug 6, 1998 | Jul 30, 2000 | 2,157 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-1105 | — | — | — | — |
| — | — O-1-1105 | — | — | — | — |
| — | — O-1-14539 | — | — | — | — |
| — | — O-1-14539 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 449 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 1,785 | -1,336 |
| Eagle FordEAGLEFORD | 1,915 | -1,466 |
| Buda | 1,945 | -1,496 |
| Del Rio | 2,030 | -1,581 |
| Georgetown | 2,085 | -1,636 |
| Edwards | 2,190 | -1,741 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,426 | 3,845 | Open hole |
| 2,428 | 3,699 | Perforated |
| 2,428 | 3,699 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 7 | 2,423 | 9.25 | 495 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 28, 2017 | May 12, 2005 | — |
| 00 | Jul 25, 2005 | May 12, 2005 | — |
| 00 | Feb 1, 2005 | Sep 16, 2004 | Yes |
| 00 | Nov 4, 2004 | — | — |
| 00 | Aug 2, 2001 | Apr 20, 2001 | Yes |
| 00 | May 3, 2001 | — | — |
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 42-055-34790 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-055-34790 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their 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/05534790, documented in the API reference.