TEXAS · WELLS · GLASSCOCK COUNTY · COLE RANCH "40" LEASE · API 42-173-33269 · DISTRICT 7B
Cole Ranch 40 #1
Glasscock County · Spraberry (Trend Area) field · Vertical
Cole Ranch 40 #1 (API 42-173-33269) is a plugged well in Glasscock County, plugged January 29, 2021, last operated by Diamondback E&P LLC.
The RRC has issued one drilling permit (amended once), issued December 11, 2006, permitted to 8,750 ft.
It was permitted by Reef Exploration, L.P. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Clear Fork, Spraberry, Jo Mill, Dean.
Its lease has reported 35.7K barrels of oil and 69.1K mcf of gas since May 2007, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Reef Exploration, L.P.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,237
- 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 Apr 2026 |
| Latest permit | Reef Exploration, L.P.Dec 11, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,750
- total depth, ft
- 2
- permits on file
- Dec 11, 2006
- last permit issued
- Apr 6, 2007
- completed
- 35.7K
- cumulative oil, bbl
- 69.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 6, 2007
- Shut in
- —
- Plugged
- Jan 29, 2021
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cole Ranch "40" O-10-38170 | Spraberry (Trend Area) | Diamondback E&P LLC | 2 | 35.7K | 69.1K | May 2007 – Jul 2026 |
Oil, barrels lease total
Last 12 months 375 · prior 12 361(+4%)
Gas, mcf lease total
Last 12 months 2,118 · prior 12 1,801(+18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Reef Exploration, L.P.Jun 2007 → Jun 2011
- 2Energen Resources CorporationJul 2011 → Jan 2019
- 3Diamondback E&P LLCFeb 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 630248-98 | Drill | Reef Exploration, L.P. | Jan 3, 2007 | Dec 11, 2006 | Jan 17, 2007 | 8,750 |
| 630248-99 | Drill | Reef Exploration, L.P. | Dec 8, 2006 | Dec 11, 2006 | Jan 17, 2007 | 8,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 6, 2007 | Cole Ranch 40 O-10-38170 | Spraberry (Trend Area) | Diamondback E&P LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,705 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,538 | 7,117 | Perforated |
| 7,458 | 7,769 | Perforated |
| 7,929 | 8,008 | Perforated |
| 8,142 | 8,438 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 398 | 17.5 | 400 S |
| 8.625 | 3,232 | 11 | 1,185 S |
| 4.5 | 8,500 | 7.875 | 1,100 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 | Dec 7, 2007 | Oct 11, 2007 | — |
| 00 | Aug 2, 2007 | May 15, 2007 | Yes |
| 00 | Jul 26, 2007 | — | — |
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 42-173-33269 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-33269 → 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.
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/17333269, documented in the API reference.