WELL · 42-389-32521 · DISTRICT 8
Big Valley 6-20 #1H
Reeves County · Horizontal
Big Valley 6-20 #1H (API 42-389-32521) is a permitted horizontal well in Reeves County filed by Diamondback E&P LLC; no completion report is on file yet.
The RRC has issued 2 drilling permits (amended once) between 2008 and 2020, permitted to 11,300 ft.
Completion filings report 3 formation tops, including Bone Spring, Phantom (Wolfcamp), Wolfcamp.
Its 2 leases have reported 101K barrels of oil and 125K mcf of gas since September 2008, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
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 | none |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Diamondback E&P LLCAug 27, 2020 |
- 11,300
- total depth, ft
- 3
- permits on file
- Aug 27, 2020
- last permit issued
- —
- completed
- 101K
- cumulative oil, bbl
- 125K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
31.395927, -103.281526
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Reeves 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 Valley 6-20 O-10-54794 | Hoefs T-K (Wolfcamp) | Diamondback E&P LLC | 1 | 9.16K | 6.41K | Feb 2020 – Jul 2026 |
| Big Valley 6-20 O-10-39164 | Phantom (Wolfcamp) | Diamondback E&P LLC | 1 | 91.7K | 119K | Sep 2008 – Oct 2020 |
Oil, barrels lease total
Last 12 months 35 · prior 12 149(-77%)
Gas, mcf lease total
Last 12 months 0 · prior 12 53(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cimarex Energy Co.Sep 2008 → Aug 2018
- 2Callon Petroleum Operating CoSep 2018 → Apr 2019
- 3Colgate Operating, LLCMay 2019 → Oct 2019
- 4Diamondback E&P LLCNov 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 861991-99 | Field transfer | Diamondback E&P LLC | Feb 17, 2020 | Aug 27, 2020 | Mar 3, 2008 | 10,662 |
| 655414-98 | Drill | Cimarex Energy Co. | Jul 18, 2008 | Feb 25, 2008 | Mar 3, 2008 | 11,300 |
| 655414-99 | Drill | Cimarex Energy Co. | Feb 15, 2008 | Feb 25, 2008 | Mar 3, 2008 | 11,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-39164 | — | — | — | — |
| — | — O-10-54794 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,530 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Bone SpringUPPER 3RD BONE SPRING | 10,057 | -7,527 |
| Phantom (Wolfcamp) | 10,200 | -7,670 |
| Bone SpringLOWER 3RD BONE SPRING | 10,559 | -8,029 |
| WolfcampWOLFCAMP A | 10,728 | -8,198 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,406 | 14,480 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,120 | 17.5 | 1,085 S |
| 9.625 | 5,000 | 12.25 | 1,675 S |
| 7 | 11,050 | 8.75 | 1,200 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 14, 2020 | Sep 14, 2020 | Yes |
| 00 | Apr 6, 2009 | Nov 14, 2008 | Yes |
| 00 | Mar 25, 2009 | — | — |
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 42-389-32521 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-32521 → 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.
Worsham '20'42-389-30392
0.0 KM · Diamondback E&P LLC · Section with this well →
| Delaware | 4,940 | -2,398 |
| Bone Spring | 8,239 | -5,697 |
| Wolfcamp | 10,790 | -8,248 |
| Wolcamp | 10,790 | -8,248 |
| Atoka | 15,370 | -12,828 |
| Barnett | 15,850 | -13,308 |
| Mississippian | 16,202 | -13,660 |
State Norman 45-46 A42-389-38754
0.8 KM · Diamondback E&P LLC · Section with this well →
| Castile | 2,500 | 46 |
| Delaware | 4,900 | -2,354 |
| Bell Canyon | 4,930 | -2,384 |
| Cherry Canyon | 5,860 | -3,314 |
| Bone Spring | 8,040 | -5,494 |
| Wolfcamp | 10,695 | -8,149 |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
State Norman 45-46 B42-389-38755
0.8 KM · Diamondback E&P LLC · Section with this well →
| Castile | 2,500 | 47 |
| Delaware | 4,905 | -2,358 |
| Bell Canyon | 4,935 | -2,388 |
| Cherry Canyon | 5,860 | -3,313 |
| Bone Spring | 8,050 | -5,503 |
| Wolfcamp | 10,718 | -8,171 |
| Delaware | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
State Norman 45-46 C42-389-38757
0.9 KM · Diamondback E&P LLC · Section with this well →
| Castile | 2,500 | 46 |
| Delaware | 4,900 | -2,354 |
| Bell Canyon | 4,930 | -2,384 |
| Cherry Canyon | 5,875 | -3,329 |
| Bone Spring | 8,020 | -5,474 |
| Delaware | — | |
| Devonian | — | |
| Delaware | — |
11 TOPS · FIRST 8
State Norman 45-46 D42-389-38758
0.9 KM · Diamondback E&P LLC · Section with this well →
| Castile | 2,500 | 46 |
| Delaware | 4,900 | -2,354 |
| Bell Canyon | 4,930 | -2,384 |
| Cherry Canyon | 5,870 | -3,324 |
| Bone Spring | 8,040 | -5,494 |
| Delaware | — | |
| Permian (undifferentiated) | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Choctaw 1-21 B42-389-38033
1.0 KM · Diamondback E&P LLC · Section with this well →
| Bell Canyon | 4,947 | -2,412 |
| Cherry Canyon | 5,910 | -3,375 |
| Bone Spring | 8,071 | -5,536 |
| Wolfcamp | 10,802 | -8,267 |
| Delaware | — | |
| Delaware | — | |
| Pennsylvanian | — | |
| Permian (undifferentiated) | — |
10 TOPS · FIRST 8
Haflinger 20 B42-389-38979
1.0 KM · Diamondback E&P LLC · Section with this well →
| Delaware | 4,910 | -2,362 |
| Cherry Canyon | 5,861 | -3,313 |
| Bone Spring | 8,011 | -5,463 |
| Wolfcamp | 10,695 | -8,147 |
| Delaware | — | |
| Bell Canyon | — | |
| Castile | — | |
| Delaware | — |
11 TOPS · FIRST 8
Haflinger 20 UA42-389-38980
1.0 KM · Diamondback E&P LLC · Section with this well →
| Cherry Canyon | 5,856 | -3,308 |
| Bone Spring | 8,008 | -5,460 |
| Wolfcamp | 10,671 | -8,123 |
| Bell Canyon | — | |
| Delaware | — | |
| Pennsylvanian | — | |
| Permian (undifferentiated) | — | |
| Delaware | — |
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/38932521, documented in the API reference.