TEXAS · WELLS · GUADALUPE COUNTY · API 42-187-30877 · DISTRICT 01
Knobloch A #41
Guadalupe County · Darst Creek (Edwards) field · Vertical
Knobloch A #41 (API 42-187-30877) is a plugged well in Guadalupe County, plugged March 29, 2005, last operated by Texas Petroleum Investment CO..
The RRC has issued 2 drilling permits between 1978 and 1998, permitted to 3,450 ft.
It was permitted by Vintage Petroleum, Inc. and has since transferred to Texas Petroleum Investment CO. on the wellbore schedule.
Completion filings report 2 formation tops, including Buda, Edwards.
Its 2 leases have reported 769K barrels of oil and 8.35K mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 61 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.May 7, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,450
- total depth, ft
- 2
- permits on file
- May 7, 1998
- last permit issued
- May 13, 1998
- completed
- 769K
- cumulative oil, bbl
- 8.35K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 13, 1998
- Shut in
- —
- Plugged
- Mar 29, 2005
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 61 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Knobloch, C. -A- O-1-2758 | Darst Creek (Buda) | Texas Petroleum Investment Co. | 27 | 54.5K | 3.64K | Jan 1993 – Apr 2026 |
| Knobloch A O-1-2799 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | 34 | 715K | 4.71K | Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 27,687 · prior 12 26,523(+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 |
|---|---|---|---|---|---|---|
| 476089-99 | Recompletion | Vintage Petroleum, Inc. | May 7, 1998 | May 7, 1998 | Apr 29, 1998 | 2,455 |
| 34966-99 | Drill | Texaco Inc. | Oct 18, 1978 | Oct 18, 1978 | — | 3,450 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 13, 1998 | Knobloch A O-1-2799 | Darst Creek (Edwards) | Texas Petroleum Investment Co. | Plugged | — |
| Dec 13, 1978 | Knobloch C. -A- O-1-2758 | Darst Creek (Buda) | Texas Petroleum Investment Co. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 464 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,048 | 2,339 | Perforated |
| 2,430 | 2,434 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 40 | 9.875 | 25 S |
| 2.375 | 2,280 | — | — |
| 5.5 | 2,453 | 7.875 | 575 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 | Jul 16, 1998 | Jun 26, 1998 | Yes |
| 00 | Jun 30, 1998 | — | — |
| 00 | Jan 12, 1984 | Jan 17, 1979 | — |
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 42-187-30877 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-187-30877 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/18730877, documented in the API reference.