WELL · 42-503-40032 · DISTRICT 9
Drum L. R. #5
Young County · Young County Regular field · Injection · Vertical
Drum L. R. #5 (API 42-503-40032) is a well in Young County operated by Mammoth Operating LLC, completed July 23, 1989 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued June 30, 1989, permitted to 650 ft.
It was permitted by Don Bar Investment Company and has since transferred to Mammoth Operating LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Gunsite, Gunsight.
Its lease has reported 7.13K barrels of oil and 131 mcf of gas since January 1993, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 8.13K barrels injected in the 12 months reported through November 2025.
Operator of record
Permitted by Don Bar Investment Company; the EWA schedule now lists a different operator.
Spicewood, TX · P-5 Y, filed Sep 4, 2025 · 2 permits on file · (214) 642-4819
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mammoth Operating LLC |
| Production reports | Mammoth Operating LLCthrough Mar 2026 |
| Latest permit | Don Bar Investment CompanyJun 30, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 650
- total depth, ft
- 1
- permits on file
- Jun 30, 1989
- last permit issued
- Jul 23, 1989
- completed
- 7.13K
- cumulative oil, bbl
- 131
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 23, 1989
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Drum, L. R. O-13-7704 | Young County Regular | Mammoth Operating LLC | 4 | 7.13K | 131 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 472 · prior 12 384(+23%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Don Bar Investment CompanyJan 1993 → Feb 2004
- 2Beisch, RustyMar 2004 → Jan 2008
- 3Triton Energy LLCFeb 2008 → Oct 2012
- 4J-Lyn Oil Co.Nov 2012 → Dec 2023
- 5Mammoth Operating LLCJan 2024 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 360951-99 | Drill | Don Bar Investment Company | Jun 29, 1989 | Jun 30, 1989 | Jul 10, 1989 | 650 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-7704 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,130 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Gunsite | 482 | 648 |
| Gunsight | 484 | 646 |
| Gunsite | 484 | 646 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 484 | 493 | Perforated |
| 484 | 496 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 516 | 7.875 | 75 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 | Aug 7, 2023 | Apr 1, 2023 | — |
| 00 | Dec 23, 2014 | Aug 24, 2014 | — |
| 00 | Apr 1, 2013 | Dec 28, 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 42-503-40032 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-503-40032 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 8.13K
- bbl, last 12 reported months
- 69.8K
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000109655 | H-1 Injection | Active | 50 | 242 | 484–496 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 8,125 · prior 12 7,250(+12%)
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/50340032, documented in the API reference.