WELL · 42-317-42085 · DISTRICT 8
Buck (AK) #8UL
Martin County · Spraberry (Trend Area) field · Shut IN · Horizontal
Buck (AK) #8UL (API 42-317-42085) is a horizontal well in Martin County operated by Diamondback E&P LLC, completed December 12, 2019 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued February 11, 2019, permitted to 12,000 ft.
It was permitted by Guidon Energy Mgmt Services LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Queen, Grayburg.
Its lease has reported 2.59M barrels of oil and 4.84M mcf of gas since November 2019, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Guidon Energy Mgmt Services LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,231 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 | Guidon Energy Mgmt Services LLCFeb 11, 2019 |
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
- Feb 11, 2019
- last permit issued
- Dec 12, 2019
- completed
- 2.59M
- cumulative oil, bbl
- 4.84M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2019 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 12, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
32.393336, -102.026196
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Martin 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 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Buck (AK) O-10-53795 | Spraberry (Trend Area) | Diamondback E&P LLC | 8 | 2.59M | 4.84M | Nov 2019 – Jul 2026 |
Oil, barrels lease total
Last 12 months 106,214 · prior 12 157,170(-32%)
Gas, mcf lease total
Last 12 months 327,467 · prior 12 417,183(-22%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Guidon Energy Mgmt Services LLCNov 2019 → Dec 2020
- 2Diamondback E&P LLCJan 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 849680-99 | Drill | Guidon Energy Mgmt Services LLC | Feb 6, 2019 | Feb 11, 2019 | Jun 13, 2019 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-53795 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,853 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,406 | 1,447 |
| Yates | 2,784 | 69 |
| Queen | 3,715 | -862 |
| Grayburg | 4,273 | -1,420 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,476 | -1,623 |
| Spraberry | 7,936 | -5,083 |
| Cisco | — | — |
| Dean | — | — |
| Pennsylvanian | — | — |
| Wolfcamp | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,161 | 17,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,832 | 17.5 | 1,955 S |
| 9.625 | 6,839 | 12.25 | 1,465 S |
| 5.5 | 17,308 | 8.75 | 2,345 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 | Jul 6, 2020 | Apr 21, 2020 | 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 42-317-42085 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-42085 → 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.
Buck (AK)42-317-42084
0.0 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,424 | 1,429 |
| Yates | 2,799 | 54 |
| Queen | 3,727 | -874 |
| Grayburg | 4,275 | -1,422 |
| San Andres | 4,481 | -1,628 |
| Spraberry | 7,942 | -5,089 |
| Pennsylvanian | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Buck (AK)42-317-42083
0.0 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,430 | 1,423 |
| Yates | 2,799 | 54 |
| Queen | 3,726 | -873 |
| Grayburg | 4,276 | -1,423 |
| San Andres | 4,482 | -1,629 |
| Spraberry | 7,950 | -5,097 |
| Dean | 9,271 | -6,418 |
| Wolfcamp | 9,467 | -6,614 |
10 TOPS · FIRST 8
Buck (AK)42-317-42082
0.0 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,430 | 1,431 |
| Yates | 2,789 | 72 |
| Queen | 3,717 | -856 |
| Grayburg | 4,266 | -1,405 |
| San Andres | 4,469 | -1,608 |
| Spraberry | 7,936 | -5,075 |
| Dean | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Buck (AK)42-317-42080
0.2 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,430 | 1,431 |
| Yates | 2,789 | 72 |
| Queen | 3,717 | -856 |
| Grayburg | 4,266 | -1,405 |
| San Andres | 4,469 | -1,608 |
| Spraberry | 7,936 | -5,075 |
| Cisco | — | |
| Dean | — |
10 TOPS · FIRST 8
Buck (AK)42-317-42079
0.2 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,417 | 1,444 |
| Yates | 2,788 | 73 |
| Queen | 3,715 | -854 |
| Grayburg | 4,259 | -1,398 |
| San Andres | 4,458 | -1,597 |
| Spraberry | 7,942 | -5,081 |
| Dean | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Buck (AK)42-317-42078
0.2 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,434 | 1,427 |
| Yates | 2,787 | 74 |
| Queen | 3,717 | -856 |
| Grayburg | 4,267 | -1,406 |
| San Andres | 4,466 | -1,605 |
| Spraberry | 7,931 | -5,070 |
| Dean | 9,260 | -6,399 |
| Wolfcamp | 9,473 | -6,612 |
10 TOPS · FIRST 8
Buck (AK)42-317-42077
0.2 KM · Guidon Energy Mgmt Services LLC · Section with this well →
| Santa Rosa | 1,428 | 1,433 |
| Dean | 9,262 | -6,401 |
| Wolfcamp | 9,454 | -6,593 |
| Pennsylvanian | — | |
| Mississippian | — | |
| Fusselman | — | |
| Ellenburger | — | |
| Devonian | — |
10 TOPS · FIRST 8
Jones-Holton D42-317-41322
1.0 KM · Energen Resources Corporation · Section with this well →
| Santa Rosa | 1,405 | 1,448 |
| Yates | 2,771 | 82 |
| Queen | 3,704 | -851 |
| Grayburg | 3,843 | -990 |
| San Andres | 4,265 | -1,412 |
| Spraberry | 7,917 | -5,064 |
| Dean | 9,244 | -6,391 |
| Wolfcamp | 9,481 | -6,628 |
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/31742085, documented in the API reference.