TEXAS · WELLS · MARTIN COUNTY · HILL "61B" LEASE · API 42-317-35285 · DISTRICT 7B
Hill 61B #1
Martin County · Spraberry (Trend Area) field · Producing · Vertical
- Permitted field
- Hill Ranch (Miss)
Hill 61b #1 (API 42-317-35285) is a well in Martin County operated by Diamondback E&P LLC, completed October 11, 2008 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 2008 and 2017, permitted to 10,900 ft.
It was permitted by Endeavor Energy Resources L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Clear Fork, Spraberry, Dean, Wolfcamp.
Its lease has reported 63.8K barrels of oil and 62.2K mcf of gas since October 2008, last reporting volume in August 2026.
Operator of record
Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)RRC P-5 file of Oct 22, 2026
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,263
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Aug 2026 |
| Latest permit | Endeavor Energy Resources L.P.Nov 1, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,900
- total depth, ft
- 2
- permits on file
- Nov 1, 2017
- last permit issued
- Oct 11, 2008
- completed
- 63.8K
- cumulative oil, bbl
- 62.2K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · OCT 2008 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 11, 2008
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
32.408882, -101.787090 NAD27, as filed
32.408996, -101.787504 WGS84
Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Martin County.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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 |
|---|---|---|---|---|---|---|
| Hill "61B" O-10-39391 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 63.8K | 62.2K | Oct 2008 – Aug 2026 |
Oil, barrels lease total
Last 12 months 2,018 · prior 12 1,930(+5%)
Wells named Hill 61B
Diamondback E&P LLC's other wells filed under this lease name in Martin County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Operator on the lease's P-4
Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.
| Operator | From | To |
|---|---|---|
| Diamondback E&P LLC | Jan 1, 2025 | today |
| Endeavor Energy Resources L.P. | Oct 11, 2008 | Jan 1, 2025 |
Reporting production
Every operator that reported production on this well's lease, in order.
- 1Endeavor Energy Resources L.P.Oct 2008 → Dec 2024
- 2Diamondback E&P LLCJan 2025 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 832417-99 | Recompletion | Endeavor Energy Resources L.P. | Oct 25, 2017 | Nov 1, 2017 | Oct 6, 2008 | 10,900 |
| 662367-99 | Drill | Endeavor Energy Resources L.P. | May 19, 2008 | Jun 7, 2008 | Jun 15, 2008 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 11, 2008 | Hill 61B O-10-39391 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 10,900 |
| Oct 11, 2008 | Hill 61B O-10-39391 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 10,900 |
Formation tops
As filed on W-2/G-1. Subsea from 2,620 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK LIME | 5,425 | -2,805 |
| Spraberry | 7,025 | -4,405 |
| Dean | 8,325 | -5,705 |
| WolfcampWOLFCAMP LIME | 8,625 | -6,005 |
| Strawn | 10,150 | -7,530 |
| StrawnSTRAWN LIME | 10,150 | -7,530 |
| MississippianMISS | 10,175 | -7,555 |
| Woodford | 10,875 | -8,255 |
| Atoka | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,010 | 10,023 | Perforated |
| 7,010 | 10,751 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 343 | 17.5 | 350 S |
| 8.625 | 4,562 | 11 | 700 S |
| 4.5 | 10,900 | 7.875 | 1,650 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 | Jan 19, 2018 | Jan 9, 2018 | — |
| 00 | Sep 1, 2009 | Apr 16, 2009 | Yes |
| 00 | Jul 17, 2009 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Nov 19, 2009. Neutron.
Click a log to get its files from the RRC (free account). It opens in a new tab on the RRC's log search for this well, which lists each file to view or download; the RRC has no address for a single file.
| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON POROSITYSpans Clear Fork, Spraberry, Dean, Wolfcamp, Strawn, Mississippian | TIFF | 5,500 to 10,839 | Nov 19, 2009run Aug 5, 2008 | 4.03 |
"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.
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.
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 42-317-35285 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-35285 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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 neighbors, subsea-aligned so they line up regardless of surface terrain.
Open the cross-section →Kronos 61-7 Unit 142-317-45739
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,180 | 446 |
| Queen | 3,001 | -375 |
| Grayburg | 3,519 | -893 |
| San Andres | 3,849 | -1,223 |
| Spraberry | 7,028 | -4,402 |
| Dean | 8,331 | -5,705 |
| Cisco | — |
10 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45738
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,191 | 435 |
| Queen | 3,017 | -391 |
| Grayburg | 3,519 | -893 |
| San Andres | 3,849 | -1,223 |
| Spraberry | 7,030 | -4,404 |
| Wolfcamp | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45743
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,185 | 441 |
| Queen | 3,011 | -385 |
| Grayburg | 3,520 | -894 |
| San Andres | 3,846 | -1,220 |
| Clear Fork | 5,417 | -2,791 |
| Spraberry | 7,029 | -4,403 |
| Dean | — |
10 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45737
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,141 | 485 |
| Queen | 3,028 | -402 |
| Grayburg | 3,530 | -904 |
| San Andres | 3,860 | -1,234 |
| Clear Fork | 5,147 | -2,521 |
| Spraberry | 7,028 | -4,402 |
| Dean | — |
11 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45742
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,196 | 430 |
| Queen | 3,025 | -399 |
| Grayburg | 3,549 | -923 |
| San Andres | 3,882 | -1,256 |
| Spraberry | 7,031 | -4,405 |
| Dean | 8,346 | -5,720 |
| Wolfcamp | 8,558 | -5,932 |
10 TOPS · FIRST 8
Kronos 61-7 A42-317-45854
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,646 |
| Yates | 2,144 | 482 |
| Queen | 3,017 | -391 |
| Grayburg | 3,519 | -893 |
| San Andres | 3,866 | -1,240 |
| Clear Fork | 5,413 | -2,787 |
| Spraberry | 7,016 | -4,390 |
| Dean | 8,339 | -5,713 |
11 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45740
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,649 |
| Yates | 2,162 | 467 |
| Queen | 3,026 | -397 |
| Grayburg | 3,494 | -865 |
| San Andres | 3,831 | -1,202 |
| Clear Fork | 5,426 | -2,797 |
| Spraberry | 7,032 | -4,403 |
| Pennsylvanian | — |
11 TOPS · FIRST 8
Kronos 61-7 Unit 142-317-45744
0.6 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,649 |
| Yates | 2,143 | 486 |
| Queen | 2,986 | -357 |
| Grayburg | 3,419 | -790 |
| San Andres | 3,755 | -1,126 |
| Clear Fork | 5,424 | -2,795 |
| Spraberry | 7,032 | -4,403 |
| Dean | 8,333 | -5,704 |
11 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/31735285, documented in the API reference.