TEXAS · WELLS · MARTIN COUNTY · PHILLIPS 39 LEASE · API 42-317-37304 · DISTRICT 7B
Phillips 39 #4
Martin County · Spraberry (Trend Area) field · Shut In · Vertical
Phillips 39 #4 (API 42-317-37304) is a well in Martin County operated by Diamondback E&P LLC, completed March 28, 2012 and listed as shut in on the RRC schedule, shut in April 1, 2026.
The RRC has issued one drilling permit, issued October 31, 2011, permitted to 10,780 ft.
It was permitted by Cobra Oil & Gas Corporation and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Spraberry, Pennsylvanian, Dean, Wolfcamp.
Its lease has reported 294K barrels of oil and 523K mcf of gas since April 2008, last reporting in July 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cobra Oil & Gas Corporation; 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 | Cobra Oil & Gas CorporationOct 31, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,780
- total depth, ft
- 1
- permits on file
- Oct 31, 2011
- last permit issued
- Mar 28, 2012
- completed
- 294K
- cumulative oil, bbl
- 523K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 28, 2012
- Shut in
- Apr 1, 2026
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Phillips 39 O-10-38958 | Spraberry (Trend Area) | Diamondback E&P LLC | 3 | 294K | 523K | Apr 2008 – Jul 2026 |
Oil, barrels lease total
Last 12 months 4,281 · prior 12 8,390(-49%)
Gas, mcf lease total
Last 12 months 2,534 · prior 12 40,635(-94%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cobra Oil & Gas CorporationJul 2008 → May 2015
- 2Diamondback E&P LLCJun 2015 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 726895-99 | Drill | Cobra Oil & Gas Corporation | Oct 24, 2011 | Oct 31, 2011 | Nov 14, 2011 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 28, 2012 | Phillips 39 O-10-38958 | Spraberry (Trend Area) | Diamondback E&P LLC | Shut In · shut in Apr 1, 2026 | 10,780 |
Formation tops
As filed on W-2/G-1. Subsea from 2,681 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| SpraberryLOWER SPRABERRY | 7,320 | -4,639 |
| PennsylvanianPENN | 8,121 | -5,440 |
| Dean | 8,138 | -5,457 |
| WolfcampWOLFCAMP SHALE | 8,342 | -5,661 |
| PennsylvanianPENN | 9,121 | -6,440 |
| SpraberryLOWER SPRABERRY | 9,387 | -6,706 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,237 | 9,387 | Perforated |
| 9,862 | 10,030 | Perforated |
| 10,100 | 10,615 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 325 | 17.5 | 300 S |
| 8.625 | 4,480 | 11 | 1,048 S |
| 5.5 | 10,780 | 7.875 | 1,300 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 | Mar 18, 2013 | May 9, 2012 | — |
| 00 | Mar 15, 2013 | Feb 15, 2012 | 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 42-317-37304 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-37304 → 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.
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/31737304, documented in the API reference.