TEXAS · WELLS · WHEELER COUNTY · BLACK 50 LEASE · API 42-483-33503 · DISTRICT 08
Black 50 #4H
Wheeler County · Mills Ranch (Granite Wash Cons.) field · Producing · Horizontal
Black 50 #4H (API 42-483-33503) is a horizontal well in Wheeler County operated by Unbridled Resources LLC, completed October 7, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 28, 2012, permitted to 10,534 ft.
It was permitted by Linn Operating, Inc. and has since transferred to Unbridled Resources LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Pennsylvanian, B/Heebner-T/Douglas, Lower Lansing, Avant Ls.
Its lease has reported 113K barrels of oil and 895K mcf of gas since October 2012, last reporting volume in April 2026.
Operator of record
Permitted by Linn Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Active (A)
- P-5 last filed
- Dec 17, 2025
- Permits on file
- 6
- Phone
- (318) 751-3917
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unbridled Resources LLC |
| Production reports | Unbridled Resources, LLCthrough Apr 2026 |
| Latest permit | Linn Operating, Inc.Jun 28, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,534
- total depth, ft
- 1
- permits on file
- Jun 28, 2012
- last permit issued
- Oct 7, 2012
- completed
- 113K
- cumulative oil, bbl
- 895K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2012 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 7, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Black 50 G-14-272634 | Mills Ranch (Granite Wash Cons.) | Unbridled Resources, LLC | 1 | 113K | 895K | Oct 2012 – Apr 2026 |
Gas, mcf lease total
Last 12 months 40,453 · prior 12 60,762(-33%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Linn Operating, Inc.Oct 2012 → Dec 2014
- 2Enervest Operating, L.L.C.Jan 2015 → Mar 2018
- 34P Energy Texas, LLCApr 2018 → Oct 2020
- 4Unbridled Resources, LLCNov 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 743279-99 | Drill | Linn Operating, Inc. | Jun 21, 2012 | Jun 28, 2012 | Jul 3, 2012 | 11,022 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 7, 2012 | Black 50 G-14-272634 | Mills Ranch (Granite Wash Cons.) | Unbridled Resources LLC | Producing | 10,534 |
Formation tops
As filed on W-2/G-1. Subsea from 2,397 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| PennsylvanianPENN SHALE | 6,321 | -3,924 |
| B/Heebner-T/Douglas | 8,474 | -6,077 |
| Lower Lansing | 9,998 | -7,601 |
| Avant LS | 10,074 | -7,677 |
| Kansas CityKANSAS CITY 'A' / HOGSHOOTER | 10,352 | -7,955 |
| Kansas CityKANSAS CITY 'B' | 10,483 | -8,086 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,947 | 15,131 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 354 | 17.5 | 550 S |
| 9.625 | 6,523 | 12.25 | 685 S |
| 5.5 | 15,316 | 8.75 | 2,080 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 6, 2014 | Nov 5, 2013 | Yes |
| 00 | Jul 2, 2014 | — | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Aug 26, 2015. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Pennsylvanian | TIFF | 3,500 to 6,500 | Aug 26, 2015run Sep 12, 2012 | 0.86 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-483-33503 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-483-33503 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/48333503, documented in the API reference.