WELL · 42-015-30718 · DISTRICT 3
Bollinger F. G. U. #1
Austin County · Sealy (Frio 3500) field · Vertical
Bollinger F. G. U. #1 (API 42-015-30718) is a plugged well in Austin County, plugged August 14, 2018, last operated by Mastodon Operating Company LLC.
The RRC has issued one drilling permit, issued October 5, 1998, permitted to 5,000 ft.
It was permitted by Costilla Energy, Inc. and has since transferred to Mastodon Operating Company LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Frio, Vicksburg, Hockley, Yegua.
Operator of record
Mastodon Operating Company LLC
Permitted by Costilla Energy, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed May 4, 2026 · (832) 722-8571
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mastodon Operating Company LLC |
| Production reports | Integrity Petroleum Group, Inc.through Apr 2006 |
| Latest permit | Costilla Energy, Inc.Oct 5, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,000
- total depth, ft
- 1
- permits on file
- Oct 5, 1998
- last permit issued
- Feb 22, 1999
- completed
- 0
- cumulative oil, bbl
- 868K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 1998 THROUGH Aug 2018
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 22, 1999
- Shut in
- —
- Plugged
- Aug 14, 2018
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 lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Bollinger, F. G. U. G-3-172451 | Sealy (Frio 3500) | Mastodon Operating Company, LLC | 1 | 0 | 868K | Dec 1998 – Aug 2018 |
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.
- 1Costilla Energy, Inc.Dec 1998 → Jun 2000
- 2Dreyfus, Louis Natural Gas CorpJul 2000 → Aug 2001
- 3Integrity Petroleum Group, Inc.Nov 2005 → Apr 2006
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 479599-99 | Drill | Costilla Energy, Inc. | Sep 21, 1998 | Oct 5, 1998 | Dec 18, 1998 | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-172451 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 188 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,558 | 3,562 | Perforated |
| 4,062 | 4,074 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 447 | 12.25 | 211 S |
| 8.625 | 1,305 | 12.25 | 484 S |
| 5.5 | 4,200 | 7.875 | 250 S |
| 4.5 | 4,380 | 7.875 | 675 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 23, 1999 | Mar 5, 1999 | — |
| 00 | May 11, 1999 | Mar 15, 1999 | — |
| 00 | May 10, 1999 | Jan 11, 1999 | Yes |
| 00 | May 7, 1999 | Mar 15, 1999 | — |
| 00 | Apr 15, 1999 | — | — |
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 42-015-30718 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-015-30718 → 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/01530718, documented in the API reference.