WELL · 42-127-38509 · DISTRICT 1
Big Four Colony a 204 #13HL
Dimmit County · Briscoe Ranch (Eagleford) field · Horizontal
Big Four Colony A 204 #13HL (API 42-127-38509) is a horizontal well in Dimmit County operated by Trinity Operating (Usg) LLC, completed June 17, 2022.
The RRC has issued one drilling permit, issued April 20, 2022, permitted to 9,000 ft.
It was permitted by Crimson Energy Partners IV, LLC and has since transferred to Trinity Operating (Usg) LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Olmos, San Miguel, Austin Chalk, Eagle Ford.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Crimson Energy Partners IV, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Nov 4, 2025 · 392 permits on file · (888) 510-9581
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trinity Operating (Usg) LLC |
| Production reports | Trinity Operating (Usg), LLCthrough Apr 2026 |
| Latest permit | Crimson Energy Partners IV, LLCApr 20, 2022 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 1
- permits on file
- Apr 20, 2022
- last permit issued
- Jun 17, 2022
- completed
- 0
- cumulative oil, bbl
- 468K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2022 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 17, 2022
- Shut in
- —
- Plugged
- —
Surface location
28.570353, -99.581956
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Dimmit County.
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Big Four Colony a 204 G-1-300045 | Briscoe Ranch (Eagleford) | Trinity Operating (Usg), LLC | 1 | 0 | 468K | Aug 2022 – Jul 2026 |
| Big Four Colony a 204 O-1-20857 | Briscoe Ranch (Eagleford) | Trinity Operating (Usg), LLC | 1 | 0 | 0 | Jun 2022 – Nov 2025 |
Gas, mcf lease total
Last 12 months 52,714 · prior 12 96,469(-45%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Trinity Operating (Usg), LLCAug 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 879149-99 | Drill | Crimson Energy Partners IV, LLC | Apr 14, 2022 | Apr 20, 2022 | Apr 26, 2022 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-300045 | — | — | — | — |
| — | — O-1-20857 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 494 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| OlmosOLMOS - DISPOSAL | 4,391 | -3,897 |
| San MiguelSAN MIGUEL - H2S | 5,200 | -4,706 |
| Austin ChalkAUSTIN CHALK - H2S | 6,198 | -5,704 |
| Eagle FordEAGLE FORD - H2S | 6,745 | -6,251 |
| EdwardsEDWARDS - H2S | — | — |
| EscondidoESCONDIDO - DISPOSAL | — | — |
| GeorgetownGEORGETOWN - H2S | — | — |
| Glen RoseGLEN ROSE - DISPOSAL | — | — |
| Pearsall | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,337 | 18,906 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,264 | 12.25 | 855 S |
| 5.5 | 18,932 | 8.75 | 3,230 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 | Oct 3, 2025 | Sep 4, 2025 | Yes |
| 00 | Feb 28, 2023 | Feb 6, 2023 | 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 42-127-38509 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-38509 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Big Wells Mipa 20442-127-38377
1.6 KM · Crimson Energy Partners IV, LLC · Section with this well →
| Olmos | 4,478 | -3,964 |
| San Miguel | 5,266 | -4,752 |
| Austin Chalk | 6,281 | -5,767 |
| Eagle Ford | 6,807 | -6,293 |
| Glen Rose | — | |
| Georgetown | — | |
| Escondido | — | |
| Edwards | — |
9 TOPS · FIRST 8
Carrasco A20442-127-37859
1.6 KM · Crimson Energy Partners IV, LLC · Section with this well →
| Escondido | 3,145 | -2,638 |
| Olmos | 4,470 | -3,963 |
| San Miguel | 5,260 | -4,753 |
| Austin Chalk | 6,267 | -5,760 |
| Eagle Ford | 6,767 | -6,260 |
| Edwards | — | |
| Pearsall | — | |
| Glen Rose | — |
9 TOPS · FIRST 8
Nance Ranch a Unit42-127-38385
1.6 KM · Trinity Operating (Usg), LLC · Section with this well →
| Escondido | 3,085 | -2,586 |
| Olmos | 4,262 | -3,763 |
| San Miguel | 5,177 | -4,678 |
| Anacacho | 5,919 | -5,420 |
| Austin Chalk | 6,178 | -5,679 |
| Eagle Ford | 6,747 | -6,248 |
| Pearsall | — | |
| Edwards | — |
10 TOPS · FIRST 8
Nance Ranch a Unit42-127-38386
1.6 KM · Trinity Operating (Usg), LLC · Section with this well →
| Escondido | 3,089 | -2,591 |
| Olmos | 4,261 | -3,763 |
| San Miguel | 5,193 | -4,695 |
| Anacacho | 5,803 | -5,305 |
| Austin Chalk | 6,196 | -5,698 |
| Eagle Ford | 6,776 | -6,278 |
| Eagle Ford | 6,938 | -6,440 |
| Eagle Ford | 7,092 | -6,594 |
10 TOPS · FIRST 8
Nance Ranch a Unit42-127-38387
1.6 KM · Trinity Operating (Usg), LLC · Section with this well →
| Escondido | 3,077 | -2,579 |
| Olmos | 4,253 | -3,755 |
| San Miguel | 5,175 | -4,677 |
| Anacacho | 5,856 | -5,358 |
| Austin Chalk | 6,173 | -5,675 |
| Eagle Ford | 6,757 | -6,259 |
| Eagle Ford | 6,922 | -6,424 |
| Edwards | — |
10 TOPS · FIRST 8
Big Wells Mipa 20442-127-38546
1.9 KM · Crimson Energy Partners IV, LLC · Section with this well →
| Olmos | 4,488 | -3,975 |
| Olmos | 4,488 | -3,975 |
| San Miguel | 5,272 | -4,759 |
| San Miguel | 5,272 | -4,759 |
| Austin Chalk | 6,325 | -5,812 |
| Austin Chalk | 6,325 | -5,812 |
| Escondido | 6,600 | -6,087 |
| Eagle Ford | 6,812 | -6,299 |
12 TOPS · FIRST 8
Big Wells Mipa 21142-127-38545
1.9 KM · Crimson Energy Partners IV, LLC · Section with this well →
| Olmos | 4,486 | -3,973 |
| San Miguel | 5,284 | -4,771 |
| Austin Chalk | 6,293 | -5,780 |
| Eagle Ford | 6,822 | -6,309 |
| Glen Rose | — | |
| Pearsall | — | |
| Georgetown | — | |
| Escondido | — |
9 TOPS · FIRST 8
Nance Ranch a Unit42-127-38401
1.9 KM · Trinity Operating (Usg), LLC · Section with this well →
| Escondido | 3,069 | -2,571 |
| Olmos | 4,248 | -3,750 |
| San Miguel | 5,155 | -4,657 |
| Anacacho | 5,872 | -5,374 |
| Austin Chalk | 6,185 | -5,687 |
| Eagle Ford | 6,730 | -6,232 |
| Eagle Ford | 6,913 | -6,415 |
| Eagle Ford | 6,996 | -6,498 |
10 TOPS · FIRST 8
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/12738509, documented in the API reference.