WELL · 42-317-31492 · DISTRICT 8
Cox Edna 8 #1
Martin County · Spraberry (Trend Area) field · Vertical
Cox Edna 8 #1 (API 42-317-31492) is a plugged well in Martin County, plugged September 23, 2021, last operated by Diamondback E&P LLC.
The RRC has issued 2 drilling permits between 1998 and 2018, permitted to 11,200 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 6 formation tops, including Spraberry, Dean, Wolfcamp, Pennsylvanian.
Its lease has reported 25.9K barrels of oil and 40.5K mcf of gas since August 1999, last reporting in April 2025.
Operator of record
Permitted by Endeavor Energy Resources L.P.; 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 | Endeavor Energy Resources L.P.through May 2017 |
| Latest permit | Endeavor Energy Resources L.P.Mar 9, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,200
- total depth, ft
- 2
- permits on file
- Mar 9, 2018
- last permit issued
- Feb 1, 2017
- completed
- 25.9K
- cumulative oil, bbl
- 40.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 1999 THROUGH Apr 2025
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 1, 2017
- Shut in
- —
- Plugged
- Sep 23, 2021
Surface location
32.331724, -101.994381
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cox, Edna "8" O-10-36278 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 25.9K | 40.5K | Aug 1999 – Apr 2025 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Stephens, Autry C.Aug 1999 → Aug 2000
- 2Endeavor Energy Resources L.P.Sep 2000 → May 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 837277-99 | Recompletion | Endeavor Energy Resources L.P. | Mar 8, 2018 | Mar 9, 2018 | — | 11,175 |
| 478637-99 | Reenter | Stephens, Autry C. | Aug 10, 1998 | Aug 17, 1998 | Mar 13, 1998 | 11,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-36278 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,846 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,436 | 8,667 | Perforated |
| 8,436 | 11,145 | Perforated |
| 9,141 | 9,565 | Perforated |
| 9,619 | 9,798 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 350 | 17.5 | 400 S |
| 8.625 | 4,389 | 11 | 300 S |
| 4.5 | 11,175 | 7.875 | 600 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 | Nov 13, 2019 | Oct 10, 2019 | — |
| 00 | May 11, 2018 | Apr 24, 2018 | — |
| 00 | Mar 6, 2009 | Dec 18, 2008 | — |
| 00 | Jun 23, 2000 | Feb 15, 2000 | Yes |
| 00 | May 17, 2000 | — | — |
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 42-317-31492 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-31492 → 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.
ME Tarzan 8-25 E42-317-44541
0.8 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 980 | 1,855 |
| Yates | 1,908 | 927 |
| Queen | 2,200 | 635 |
| Grayburg | 3,983 | -1,148 |
| San Andres | 4,810 | -1,975 |
| Clear Fork | 6,460 | -3,625 |
| Spraberry | 7,779 | -4,944 |
| Dean | 9,106 | -6,271 |
10 TOPS · FIRST 8
ME Tarzan 8-25 E42-317-44542
0.8 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 985 | 1,850 |
| Yates | 1,908 | 927 |
| Queen | 2,200 | 635 |
| Grayburg | 3,987 | -1,152 |
| San Andres | 4,814 | -1,979 |
| Clear Fork | 6,454 | -3,619 |
| Spraberry | 7,779 | -4,944 |
| Dean | 8,959 | -6,124 |
11 TOPS · FIRST 8
ME Tarzan 8-25 E42-317-44543
0.8 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 988 | 1,847 |
| Yates | 1,908 | 927 |
| Queen | 2,200 | 635 |
| Grayburg | 3,991 | -1,156 |
| San Andres | 4,810 | -1,975 |
| Clear Fork | 6,454 | -3,619 |
| Spraberry | 7,764 | -4,929 |
| Wolfcamp | — |
10 TOPS · FIRST 8
Nichols 'A'42-317-34121
0.8 KM · Stephens, Autry C. · Section with this well →
| Spraberry | 5,008 | -2,176 |
| Spraberry | 5,008 | -2,176 |
| Lwr. Sprby | 5,008 | -2,176 |
| Upr. Sprby | 7,809 | -4,977 |
| Spraberry | 7,809 | -4,977 |
| Spraberry | 7,809 | -4,977 |
| Dean | 9,139 | -6,307 |
| Wlfcmp | 9,482 | -6,650 |
11 TOPS · FIRST 8
ME Tarzan 8-25 F42-317-44544
0.8 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 972 | 1,863 |
| Yates | 1,908 | 927 |
| Queen | 2,200 | 635 |
| Grayburg | 3,996 | -1,161 |
| San Andres | 4,820 | -1,985 |
| Clear Fork | 6,452 | -3,617 |
| Spraberry | 7,791 | -4,956 |
| Dean | 9,108 | -6,273 |
10 TOPS · FIRST 8
ME Tarzan 8-25 F42-317-44545
0.8 KM · Endeavor Energy Resources L.P. · Section with this well →
| Santa Rosa | 974 | 1,861 |
| Yates | 1,909 | 926 |
| Queen | 2,200 | 635 |
| Grayburg | 3,988 | -1,153 |
| San Andres | 4,816 | -1,981 |
| Clear Fork | 6,456 | -3,621 |
| Spraberry | 7,784 | -4,949 |
| Pennsylvanian | — |
11 TOPS · FIRST 8
Nichols 'A'42-317-34347
0.9 KM · Endeavor Energy Resources L.P. · Section with this well →
| LWR Spraberry | 8,400 | -5,570 |
| Spraberry | 8,400 | -5,570 |
| Dean | 9,110 | -6,280 |
| Wolfcamp | 9,425 | -6,595 |
| Strawn | 10,715 | -7,885 |
| Bend | 11,025 | -8,195 |
| Atoka | — |
Thelma B42-317-41253
1.0 KM · QEP Energy Company · Section with this well →
| Santa Rosa | 1,338 | 1,491 |
| Yates | 2,675 | 154 |
| Queen | 3,607 | -778 |
| Grayburg | 4,259 | -1,430 |
| San Andres | 4,403 | -1,574 |
| Spraberry | 7,755 | -4,926 |
| Dean | 9,059 | -6,230 |
| Wolfcamp | 9,366 | -6,537 |
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/31731492, documented in the API reference.