WELL · 42-127-33004 · DISTRICT 1
Tortuga B Unit #4RE
Dimmit County · Pearsall (Austin Chalk) field · Horizontal
Tortuga B Unit #4RE (API 42-127-33004) is a plugged horizontal well in Dimmit County, plugged May 7, 2018, last operated by Crescent Energy Operating LLC.
The RRC has issued 2 drilling permits (amended once) between 1991 and 2005, permitted to 7,000 ft.
It was permitted by Sage Energy Company and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Olmos, Anacacho, Austin Chalk.
Its 2 leases have reported 529K barrels of oil and 248K mcf of gas since January 1993, last reporting in July 2026. The leases carry 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Sage Energy Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 28, 2025
- Permits on file
- 54
- Phone
- (713) 337-4600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Crescent Energy Operating LLC |
| Production reports | Crescent Energy Operating, LLCthrough Apr 2026 |
| Latest permit | Sage Energy CompanySep 27, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,000
- total depth, ft
- 3
- permits on file
- Sep 27, 2005
- last permit issued
- Nov 2, 2005
- completed
- 529K
- cumulative oil, bbl
- 248K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 2, 2005
- Shut in
- —
- Plugged
- May 7, 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 2 leases this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tortuga B Unit O-1-12425 | Pearsall (Austin Chalk) | Crescent Energy Operating, LLC | 7 | 417K | 178K | Jan 1993 – Jul 2026 |
| Tortuga-A-Unit O-1-14663 | Pearsall (Austin Chalk) | Crimson Exploration Oper., Inc. | 1 | 113K | 70.3K | Nov 2005 – Jul 2018 |
Oil, barrels lease total
Last 12 months 6,163 · prior 12 5,469(+13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Famcor Oil, Inc.Jan 1993 → Dec 1998
- 2Ceniza Petroleum, Inc.Jan 1999 → Jul 2000
- 3Tiza, Inc.Aug 2000 → Jul 2003
- 4First Rock, Inc.Aug 2003 → Apr 2005
- 5Sage Energy CompanyAug 2005 → Jun 2011
- 6Crimson Exploration Oper., Inc.Jul 2011 → Dec 2019
- 7Contango Resources, Inc.Jan 2020 → Dec 2021
- 8Contango Resources, LLCJan 2022 → Oct 2025
- 9Crescent Energy Operating, LLCNov 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 606935-98 | Recompletion | Sage Energy Company | Jan 11, 2006 | Sep 27, 2005 | Sep 26, 2005 | 6,700 |
| 606935-99 | Recompletion | Sage Energy Company | Sep 26, 2005 | Sep 27, 2005 | — | 6,700 |
| 386994-99 | Drill | Famcor Oil, Inc | Apr 19, 1991 | Apr 19, 1991 | Apr 20, 1991 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-12425 | — | — | — | — |
| — | — O-1-12425 | — | — | — | — |
| — | — O-1-14663 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 591 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 3,934 | -3,343 |
| Anacacho | 5,677 | -5,086 |
| Austin Chalk | 5,874 | -5,283 |
| Austin Chalk | 5,954 | -5,363 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,990 | 1,375 | Perforated |
| 5,990 | 8,396 | Perforated |
| 5,990 | 9,217 | Perforated |
| 5,990 | 9,539 | Perforated |
| 5,990 | 10,551 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,524 | 12.25 | 530 S |
| 7 | 5,990 | 8.75 | 610 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 15, 2006 | Jan 19, 2006 | Yes |
| 00 | Mar 29, 2006 | Jun 19, 1991 | Yes |
| 00 | Feb 21, 2006 | Jun 19, 1991 | Yes |
| 00 | Aug 12, 1991 | Jun 19, 1991 | Yes |
| 00 | Aug 8, 1991 | — | — |
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 42-127-33004 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-33004 → 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/12733004, documented in the API reference.