WELL · 42-329-42003 · DISTRICT 8
Spanish Trail 48 HZ Unit #4828LS
Midland County · Spraberry (Trend Area) field · Producing · Horizontal
Spanish Trail 48 HZ Unit #4828LS (API 42-329-42003) is a horizontal well in Midland County operated by Cog Operating LLC, completed December 14, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued November 9, 2017, permitted to 12,000 ft.
It was permitted by Rsp Permian, LLC and has since transferred to Cog Operating LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 3.77M barrels of oil and 8.94M mcf of gas since September 2016, last reporting in July 2026. The lease carries 20 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by RSP Permian, LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | RSP Permian, LLCNov 9, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 1
- permits on file
- Nov 9, 2017
- last permit issued
- Dec 14, 2018
- completed
- 3.77M
- cumulative oil, bbl
- 8.94M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2016 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 14, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
31.974177, -102.155047
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Midland 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; they carry 20 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Spanish Trail 48 HZ Unit O-10-48103 | Spraberry (Trend Area) | COG Operating LLC | 20 | 3.77M | 8.94M | Sep 2016 – Jul 2026 |
Oil, barrels lease total
Last 12 months 122,616 · prior 12 166,649(-26%)
Gas, mcf lease total
Last 12 months 587,579 · prior 12 627,104(-6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1RSP Permian, LLCSep 2016 → Jul 2018
- 2COG Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 831341-99 | Drill | RSP Permian, LLC | Sep 26, 2017 | Nov 9, 2017 | Jun 9, 2018 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-48103 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,876 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,075 | 1,801 |
| Yates | 2,929 | -53 |
| Seven Rivers | 3,158 | -282 |
| Queen | 3,829 | -953 |
| Grayburg | 4,241 | -1,365 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,737 | -1,861 |
| Glorieta | 5,671 | -2,795 |
| Clear ForkCLEARFORK | 7,171 | -4,295 |
| Spraberry | 8,045 | -5,169 |
| SpraberrySPRABERRY UPPER-DEAN | 8,239 | -5,363 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,480 | 16,562 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,570 | 17.5 | 1,680 S |
| 9.625 | 8,507 | 12.25 | 617 S |
| 5.5 | 16,637 | 8.5 | 1,645 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 14, 2019 | Feb 21, 2019 | 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 42-329-42003 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-42003 → 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.
Spanish Trail 48 HZ Unit42-329-42004
0.0 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,070 | 1,806 |
| Yates | 2,925 | -49 |
| Seven Rivers | 3,154 | -278 |
| Queen | 3,825 | -949 |
| Grayburg | 4,229 | -1,353 |
| San Andres | 4,737 | -1,861 |
| Glorieta | 5,666 | -2,790 |
| Clear Fork | 7,166 | -4,290 |
10 TOPS · FIRST 8
Spanish Trail 48 HZ Unit42-329-41666
0.1 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,864 | 1,012 |
| Yates | 2,797 | 79 |
| Seven Rivers | 3,156 | -280 |
| Queen | 3,969 | -1,093 |
| Grayburg | 4,426 | -1,550 |
| San Andres | 4,720 | -1,844 |
| Glorieta | 5,570 | -2,694 |
| Clear Fork | 7,163 | -4,287 |
10 TOPS · FIRST 8
Spanish Trail 48 HZ Unit42-329-42467
0.1 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,071 | 1,805 |
| Yates | 2,916 | -40 |
| Seven Rivers | 3,150 | -274 |
| Queen | 3,829 | -953 |
| Grayburg | 4,222 | -1,346 |
| San Andres | 4,748 | -1,872 |
| Glorieta | 5,672 | -2,796 |
| Clear Fork | 7,166 | -4,290 |
10 TOPS · FIRST 8
Spanish Trail 48 HZ Unit42-329-41668
0.1 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,867 | 1,009 |
| Yates | 2,771 | 105 |
| Seven Rivers | 3,159 | -283 |
| Queen | 3,957 | -1,081 |
| Grayburg | 4,426 | -1,550 |
| San Andres | 4,720 | -1,844 |
| Glorieta | 5,570 | -2,694 |
| Clear Fork | 7,166 | -4,290 |
10 TOPS · FIRST 8
Spanish Trail 48 HZ Unit42-329-42466
0.1 KM · RSP Permian, LLC · Section with this well →
| Spraberry | 8,231 | -5,355 |
| Ellenburger | — | |
| Fusselman | — | |
| Mississippian | — | |
| Wolfcamp | — | |
| Strawn | — | |
| Pennsylvanian | — | |
| Atoka | — |
10 TOPS · FIRST 8
Spanish Trail HZ Unit42-329-41610
0.1 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,860 | 1,016 |
| Yates | 2,860 | 16 |
| Seven Rivers | 3,153 | -277 |
| Queen | 4,023 | -1,147 |
| Grayburg | 4,442 | -1,566 |
| San Andres | 4,698 | -1,822 |
| Fusselman | — | |
| Ellenburger | — |
10 TOPS · FIRST 8
Spanish Trail 48 HZ Unit42-329-42470
0.1 KM · RSP Permian, LLC · Section with this well →
| Santa Rosa | 1,079 | 1,797 |
| Yates | 2,920 | -44 |
| Seven Rivers | 3,156 | -280 |
| Queen | 3,831 | -955 |
| Grayburg | 4,227 | -1,351 |
| San Andres | 4,753 | -1,877 |
| Glorieta | 5,672 | -2,796 |
| Clear Fork | 7,171 | -4,295 |
10 TOPS · FIRST 8
Line Drive N42-329-42248
0.2 KM · Diamondback E&P LLC · Section with this well →
| Santa Rosa | 1,118 | 1,761 |
| Yates | 2,953 | -74 |
| Seven Rivers | 3,279 | -400 |
| Queen | 3,725 | -846 |
| Grayburg | 4,203 | -1,324 |
| Rustler | — |
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/32942003, documented in the API reference.