WELL · 42-469-30578 · DISTRICT 2
Zimmer John #8
Victoria County · Coletto Creek (2300) field · Vertical
Zimmer John #8 (API 42-469-30578) is a well in Victoria County operated by Graham Royalty Ltd., completed February 26, 1977.
The RRC has issued 2 drilling permits between 1993 and 1997, permitted to 4,513 ft.
It was permitted by Costilla Energy, Inc. and has since transferred to Graham Royalty Ltd. on the wellbore schedule.
Completion filings report 10 formation tops, including 2100 Sand, 2100' Sd, 2300 Sand, 2300' Sand.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit, with 558K barrels injected in the 12 months reported through November 2025.
Operator of record
Permitted by Costilla Energy, Inc.; the EWA schedule now lists a different operator.
Covington, LA · P-5 Y, filed Apr 5, 1996 · 227 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Graham Royalty Ltd. |
| Production reports | Costilla Energy, Inc.through Apr 1998 |
| Latest permit | Costilla Energy, Inc.Nov 17, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,513
- total depth, ft
- 2
- permits on file
- Nov 17, 1997
- last permit issued
- Feb 26, 1977
- completed
- 0
- cumulative oil, bbl
- 40.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 26, 1977
- 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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Zimmer, John G-2-166256 | Coletto Creek (1450) | Petra Oleum Corp. | 1 | 0 | 2.8K | Nov 1997 – Jul 2026 |
| Zimmer, John G-2-146379 | Coletto Creek (2100) | Costilla Energy, Inc. | 1 | 0 | 37.7K | Feb 1993 – Nov 1997 |
| Zimmer, John G-2-128592 | Coletto Creek (2300) | Graham Royalty, Ltd. | 1 | 0 | 0 | Jan 1993 – Feb 1993 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Graham Royalty, Ltd.Jul 1993 → Oct 1993
- 2Midpar L.P.Nov 1993 → Feb 1995
- 3Parker & Parsley Development L.PMar 1995 → Oct 1995
- 4Costilla Energy, Inc.Dec 1997 → Apr 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 470130-99 | Recompletion | Costilla Energy, Inc. | Nov 14, 1997 | Nov 17, 1997 | Nov 7, 1997 | 1,900 |
| 409132-99 | Recompletion | Graham Royalty, Ltd. | Feb 18, 1993 | Jun 14, 1993 | Feb 1, 1993 | 4,513 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-128592 | — | — | — | — |
| — | — G-2-146379 | — | — | — | — |
| — | — G-2-166256 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 66 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,882 | 1,888 | Perforated |
| 2,115 | 2,125 | Perforated |
| 2,270 | 2,274 | Perforated |
| 2,302 | 2,308 | Perforated |
| 2,840 | 3,230 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 513 | 14.75 | 150 S |
| 10.75 | 513 | 15 | 400 S |
| 10.75 | 513 | — | — |
| — | 2,016 | 9.875 | 495 S |
| 4.5 | 2,830 | 6.375 | 300 S |
| 7 | 4,514 | 9.875 | 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 | Jun 14, 2022 | Jan 13, 2022 | — |
| 00 | Sep 21, 2010 | Jul 5, 2010 | — |
| 00 | Apr 3, 1998 | Dec 12, 1997 | Yes |
| 00 | Feb 4, 1998 | — | — |
| 00 | Dec 17, 1993 | Aug 20, 1993 | Yes |
| 00 | Sep 9, 1993 | — | — |
| 00 | Nov 16, 1988 | Aug 11, 1988 | — |
| 00 | Oct 18, 1988 | — | — |
| 00 | Jan 12, 1984 | Apr 1, 1977 | — |
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 42-469-30578 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-469-30578 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 558K
- bbl, last 12 reported months
- 11.9M
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000101466 | H-1 Injection | Active | 6,000 | 1,100 | 2,830–3,235 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 557,900 · prior 12 894,750(-38%)
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/46930578, documented in the API reference.