WELL · 42-187-33486 · DISTRICT 1
Knobloch B - #4H
Guadalupe County · Darst Creek (Edwards) field · Shut IN · Horizontal
Knobloch B - #4H (API 42-187-33486) is a permitted horizontal well in Guadalupe County filed by Vintage Petroleum, Inc.; no completion report is on file yet.
The RRC has issued one drilling permit, issued March 11, 2003, permitted to 4,530 ft.
It was permitted by Vintage Petroleum, Inc. and has since transferred to Texas Petroleum Investment CO. on the wellbore schedule.
Completion filings report 5 formation tops, including Eagle Ford, Buda, Del Rio, Georgetown.
Its 2 leases have reported 1.54M barrels of oil and 180 mcf of gas since January 1993, last reporting in July 2026. The leases carry 48 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.Mar 11, 2003 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,530
- total depth, ft
- 1
- permits on file
- Mar 11, 2003
- last permit issued
- —
- completed
- 1.54M
- cumulative oil, bbl
- 180
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- —
- Shut in
- Aug 1, 2010
- 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 2 leases this well is completed on; they carry 48 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Knobloch B - O-1-2800 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | 46 | 1.36M | 180 | Jan 1993 – Jul 2026 |
| Knobloch, C. -B- 4H O-1-14459 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | 2 | 179K | 0 | Apr 2003 – Jul 2015 |
Oil, barrels lease total
Last 12 months 53,719 · prior 12 55,982(-4%)
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 |
|---|---|---|---|---|---|---|
| 529447-99 | Drill | Vintage Petroleum, Inc. | Mar 11, 2003 | Mar 11, 2003 | Mar 30, 2003 | 2,850 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | Knobloch B - O-1-2800 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | Shut IN · shut in Aug 1, 2010 | 4,530 |
| Apr 10, 2003 | Knobloch C. -B- 4H O-1-14459 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | Not on Schedule | — |
| — | Knobloch C. -B- 4H O-1-14459 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 481 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Eagle FordEAGLEFORD | 2,338 | -1,857 |
| Buda | 2,368 | -1,887 |
| Del Rio | 2,439 | -1,958 |
| Georgetown | 2,494 | -2,013 |
| Edwards | 2,610 | -2,129 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,960 | 4,530 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 7 | 2,920 | 8.75 | 585 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 | Jul 1, 2015 | — | — |
| 00 | Sep 30, 2003 | Aug 28, 2003 | Yes |
| 00 | Sep 18, 2003 | — | — |
| 00 | Sep 16, 2003 | — | — |
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 42-187-33486 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-187-33486 → 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/18733486, documented in the API reference.