WELL · 42-505-33483 · DISTRICT 4
Guerra Avelina #4AC
Zapata County · Lopeno (Consolidated) field · Vertical
Guerra Avelina #4AC (API 42-505-33483) is a well in Zapata County operated by Xto Energy Inc., completed September 18, 1997.
The RRC has issued 2 drilling permits (amended twice) between 1996 and 1997, permitted to 12,500 ft.
It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Xto Energy Inc. on the wellbore schedule.
Completion filings report 4 formation tops, including G-1, Wilcox, G-2, Wilcoxk.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.
Spring, TX · P-5 X, filed Apr 8, 2026 · 16,156 permits on file · (346) 502-1572
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | XTO Energy Inc. |
| Production reports | Vantage Operating II, LLCthrough Apr 2026 |
| Latest permit | Parker & Parsley Development L.PAug 7, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,500
- total depth, ft
- 4
- permits on file
- Aug 7, 1997
- last permit issued
- Sep 18, 1997
- completed
- 0
- cumulative oil, bbl
- 10.1M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 1997 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 18, 1997
- 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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Guerra, Avelina G-4-163335 | Lopeno (Wilcox K) | Vantage Operating II, LLC | 1 | 0 | 7.3M | Feb 1997 – Jul 2026 |
| Guerra, Avelina G-4-165664 | Lopeno (Wilcox G) | XTO Energy Inc. | 1 | 0 | 2.76M | Sep 1997 – Jul 2009 |
| Guerra, Avelina G-4-163336 | Lopeno (Wilcox I) | Dominion Expl. & Prod., Inc. | 1 | 0 | 71.5K | Mar 1997 – Jun 2005 |
| Guerra, Avelina G-4-165886 | Lopeno (Wilcox 10,200) | Dominion Expl. & Prod., Inc. | 1 | 0 | 0 | Aug 1997 – Jun 2005 |
Gas, mcf lease total
Last 12 months 13,336 · prior 12 11,988(+11%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parker & Parsley Development L.PMar 1997 → Aug 1997
- 2Pioneer Natural Res. USA, Inc.Sep 1997 → Jul 1999
- 3CNG Producing CompanyAug 1999 → May 2000
- 4Dominion Expl. & Prod., Inc.Jun 2000 → Jul 2007
- 5XTO Energy Inc.Aug 2007 → Jun 2021
- 6Vantage Operating II, LLCJul 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 465942-98 | Recompletion | Pioneer Natural Res. USA, Inc. | Oct 8, 1997 | Aug 7, 1997 | Sep 16, 1997 | 11,380 |
| 465942-99 | Recompletion | Parker & Parsley Development L.P | Aug 7, 1997 | Aug 7, 1997 | — | 12,500 |
| 452960-98 | Drill | Parker & Parsley Development L.P | Dec 31, 1996 | Sep 20, 1996 | Sep 29, 1996 | 12,500 |
| 452960-99 | Drill | Parker & Parsley Development L.P | Sep 20, 1996 | Sep 20, 1996 | — | 11,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-163335 | — | — | — | — |
| — | — G-4-163336 | — | — | — | — |
| — | — G-4-165664 | — | — | — | — |
| — | — G-4-165886 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 366 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,032 | 10,060 | Perforated |
| 10,032 | 10,114 | Perforated |
| 10,085 | 10,114 | Perforated |
| 10,322 | 10,360 | Perforated |
| 10,322 | 10,492 | Perforated |
| 10,481 | 10,492 | Perforated |
| 10,484 | 10,492 | Perforated |
| 11,043 | 11,052 | Perforated |
| 11,063 | 11,081 | Perforated |
| 11,339 | 11,365 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 582 | 17.5 | 650 S |
| 9.625 | 6,500 | 12.25 | 828 S |
| 5.5 | 11,600 | 6.75 | 175 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 12, 2007 | Dec 22, 2006 | — |
| 00 | Aug 17, 2005 | Mar 15, 2005 | — |
| 00 | Mar 11, 1998 | Nov 12, 1997 | Yes |
| 00 | Feb 13, 1998 | Nov 12, 1997 | — |
| 00 | Jan 13, 1998 | — | — |
| 00 | Dec 30, 1997 | — | — |
| 00 | Jul 25, 1997 | Apr 24, 1997 | Yes |
| 00 | Jul 17, 1997 | Apr 28, 1997 | Yes |
| 00 | Jul 3, 1997 | — | Yes |
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 42-505-33483 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-33483 → 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/50533483, documented in the API reference.