WELL · 42-135-43880 · DISTRICT 8
Four Corners 1729 A #101H
Ector County · Spraberry (Trend Area) field · Producing · Horizontal
Four Corners 1729 A #101H (API 42-135-43880) is a horizontal well in Ector County operated by Diamondback E&P LLC, completed October 6, 2022 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued April 13, 2022, permitted to 9,700 ft.
It was permitted by Firebird Energy LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 439K barrels of oil and 415K mcf of gas since July 2022, last reporting in July 2026.
Operator of record
Permitted by Firebird Energy LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,237 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Firebird Energy LLCApr 13, 2022 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,700
- total depth, ft
- 2
- permits on file
- Apr 13, 2022
- last permit issued
- Oct 6, 2022
- completed
- 439K
- cumulative oil, bbl
- 415K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2022 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 6, 2022
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
31.652151, -102.330713
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ector County.
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 |
|---|---|---|---|---|---|---|
| Four Corners 1729 A O-10-58066 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 439K | 415K | Jul 2022 – Jul 2026 |
Oil, barrels lease total
Last 12 months 60,325 · prior 12 85,019(-29%)
Gas, mcf lease total
Last 12 months 96,109 · prior 12 112,222(-14%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Firebird Energy LLCOct 2022 → Nov 2022
- 2Diamondback E&P LLCDec 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 878897-98 | Drill | Firebird Energy LLC | May 2, 2022 | Apr 13, 2022 | May 4, 2022 | 9,700 |
| 878897-99 | Drill | Firebird Energy LLC | Apr 7, 2022 | Apr 13, 2022 | May 5, 2022 | 9,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-58066 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,931 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 3,053 | -122 |
| Yates | 3,132 | -201 |
| Seven Rivers | 3,321 | -390 |
| Queen | 3,394 | -463 |
| Grayburg | 3,882 | -951 |
| Queen | 4,243 | -1,312 |
| Grayburg | 4,736 | -1,805 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 5,052 | -2,121 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 5,075 | -2,144 |
| Glorieta | 6,076 | -3,145 |
| Clear ForkCLEARFORK | 7,063 | -4,132 |
| Clear ForkCLEARFORK | 7,098 | -4,167 |
| Glorieta | — | — |
| Holt | — | — |
| Santa RosaSANTA ROSA BASE | — | — |
| Seven Rivers | — | — |
| Tubb | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,065 | 24,000 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,449 | 17.5 | 1,016 S |
| 9.625 | 8,173 | 12.25 | 1,220 S |
| 5.5 | 24,053 | 8.5 | 2,815 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 21, 2023 | May 25, 2023 | Yes |
| 00 | Dec 14, 2022 | Oct 25, 2022 | — |
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 42-135-43880 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-43880 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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.
Four Corners 1729 B42-135-43881
0.0 KM · Firebird Energy LLC · Section with this well →
| Yates | 3,053 | -122 |
| Seven Rivers | 3,333 | -402 |
| Queen | 3,394 | -463 |
| Grayburg | 3,882 | -951 |
| San Andres | 5,052 | -2,121 |
| Glorieta | 6,053 | -3,122 |
| Clear Fork | 7,098 | -4,167 |
| Holt | — |
10 TOPS · FIRST 8
Millie B42-135-40634
0.3 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 6,426 | -3,494 |
| Clear Fork | 7,872 | -4,940 |
| Wolfcamp | 9,130 | -6,198 |
| Strawn | 11,008 | -8,076 |
Millie B Leon B42-135-43743
0.3 KM · Firebird Energy LLC · Section with this well →
| Santa Rosa | 1,359 | 1,577 |
| Yates | 3,140 | -204 |
| Seven Rivers | 3,867 | -931 |
| Queen | 4,251 | -1,315 |
| Grayburg | 4,702 | -1,766 |
| San Andres | 5,116 | -2,180 |
| Glorieta | 6,120 | -3,184 |
| Clear Fork | 7,100 | -4,164 |
10 TOPS · FIRST 8
Millie B Leon A42-135-43742
0.3 KM · Firebird Energy LLC · Section with this well →
| Santa Rosa | 1,357 | 1,579 |
| Yates | 3,140 | -204 |
| Seven Rivers | 3,867 | -931 |
| Queen | 4,251 | -1,315 |
| Grayburg | 4,704 | -1,768 |
| San Andres | 5,114 | -2,178 |
| Clear Fork | 6,118 | -3,182 |
| Glorieta | 7,095 | -4,159 |
10 TOPS · FIRST 8
Millie C42-135-40635
0.4 KM · FDL Operating, LLC · Section with this well →
| San Andres | 5,094 | -2,172 |
| Spraberry | 8,462 | -5,540 |
| Wolfcamp | 9,105 | -6,183 |
| Strawn | 11,008 | -8,086 |
Millie B Leon42-135-43614
0.4 KM · FDL Operating, LLC · Section with this well →
| Queen | 4,241 | -1,307 |
| Grayburg | 4,498 | -1,564 |
| San Andres | 5,144 | -2,210 |
| Clear Fork | 6,510 | -3,576 |
| Spraberry | 8,014 | -5,080 |
| Jo Mill | 8,489 | -5,555 |
| Seven Rivers | — | |
| Santa Rosa | — |
12 TOPS · FIRST 8
Millie B Leon42-135-43613
0.4 KM · FDL Operating, LLC · Section with this well →
| Queen | 4,241 | -1,311 |
| Grayburg | 4,697 | -1,767 |
| San Andres | 5,144 | -2,214 |
| Clear Fork | 6,510 | -3,580 |
| Spraberry | 8,014 | -5,084 |
| Jo Mill | 8,489 | -5,559 |
| Seven Rivers | — | |
| Yates | — |
12 TOPS · FIRST 8
Millie C42-103-36088
0.6 KM · FDL Operating, LLC · Section with this well →
| San Andres | 4,754 | -1,829 |
| Spraberry | 6,483 | -3,558 |
| Clear Fork | 7,585 | -4,660 |
| Wolfcamp | 9,111 | -6,186 |
| Strawn | 10,125 | -7,200 |
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/13543880, documented in the API reference.