TEXAS · WELLS · IRION COUNTY · MALLARD LEASE · API 42-235-34635 · DISTRICT 6E
Mallard #3039L
Irion County · Spraberry (Trend Area) field · Producing · Vertical
Mallard #3039L (API 42-235-34635) is a well in Irion County operated by Discovery Natural Resources LLC, completed July 22, 2011 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 28, 2010, permitted to 8,977 ft.
It was permitted by Fiml Natural Resources, LLC and has since transferred to Discovery Natural Resources LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Spraberry, Dean, Wolfcamp, Canyon.
Its lease has reported 599K barrels of oil and 5.74M mcf of gas since December 2010, last reporting volume in April 2026. The lease carries 12 wells, so these are lease totals, not this well alone.
Operator of record
Discovery Natural Resources LLC
Permitted by Fiml Natural Resources, LLC; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Active (A)
- P-5 last filed
- Jan 12, 2026
- Permits on file
- 452
- Phone
- (303) 893-5073
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Discovery Natural Resources LLC |
| Production reports | Discovery Natural Resources LLCthrough Apr 2026 |
| Latest permit | Fiml Natural Resources, LLCDec 28, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,977
- total depth, ft
- 1
- permits on file
- Dec 28, 2010
- last permit issued
- Jul 22, 2011
- completed
- 599K
- cumulative oil, bbl
- 5.74M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2010 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 22, 2011
- Shut in
- —
- 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 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mallard O-9-17362 | Spraberry (Trend Area) | Discovery Natural Resources LLC | 12 | 599K | 5.74M | Dec 2010 – Apr 2026 |
Gas, mcf lease total
Last 12 months 97,368 · prior 12 166,865(-42%)
Oil, barrels lease total
Last 12 months 6,387 · prior 12 9,874(-35%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Fiml Natural Resources, LLCDec 2010 → Aug 2014
- 2Discovery Natural Resources LLCSep 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 707573-99 | Drill | Fiml Natural Resources, LLC | Dec 27, 2010 | Dec 28, 2010 | Feb 3, 2011 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 22, 2011 | Mallard O-9-17362 | Spraberry (Trend Area) | Discovery Natural Resources LLC | Producing | 8,977 |
Formation tops
As filed on W-2/G-1. Subsea from 2,421 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,832 | 8,220 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 668 | 11 | 295 S |
| 4.5 | 8,960 | 7.875 | 2,015 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 | May 15, 2012 | Aug 10, 2011 | — |
| 00 | Apr 26, 2012 | Jun 24, 2011 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Feb 14, 2014. Density, Neutron. 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.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Spraberry, Dean, Wolfcamp, Canyon, Cline | TIFF | 200 to 8,977 | Feb 14, 2014run Feb 16, 2011 | 6.25 |
"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.
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 42-235-34635 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-235-34635 → 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.
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/23534635, documented in the API reference.