TEXAS · WELLS · RUSK COUNTY · MADDOX ESTATE GAS UNIT LEASE · API 42-401-34080 · DISTRICT 06
Maddox Estate Gas Unit #4
Rusk County · Oak Hill (Cotton Valley) field · Producing · Directional
Maddox Estate Gas Unit #4 (API 42-401-34080) is a well in Rusk County operated by Tgnr East Texas LLC, completed January 13, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued September 27, 2006, permitted to 11,103 ft.
It was permitted by Anadarko E&P Company LP and has since transferred to Tgnr East Texas LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Austin Chalk, Massive Anhy., Pettit, Travis Peak.
Its lease has reported 3.15K barrels of oil and 833K mcf of gas since January 2007, last reporting volume in April 2026.
Operator of record
Permitted by Anadarko E&P Company LP; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 4, 2026
- Permits on file
- 41
- Phone
- (346) 308-2250
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | TGNR East Texas LLC |
| Production reports | TGNR East Texas LLCthrough Apr 2026 |
| Latest permit | Anadarko E&P Company LPSep 27, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,103
- total depth, ft
- 2
- permits on file
- Sep 27, 2006
- last permit issued
- Jan 13, 2007
- completed
- 3.15K
- cumulative oil, bbl
- 833K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JAN 2007 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 13, 2007
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
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 |
|---|---|---|---|---|---|---|
| Maddox Estate Gas Unit G-6-234681 | Oak Hill (Cotton Valley) | TGNR East Texas LLC | 1 | 3.15K | 833K | Jan 2007 – Apr 2026 |
Gas, mcf lease total
Last 12 months 11,813 · prior 12 14,634(-19%)
Wells named Maddox Estate Gas Unit
TGNR East Texas LLC's other wells filed under this lease name in Rusk County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Anadarko E&P Company LPJan 2007 → Dec 2012
- 2Anadarko E&P Onshore LLCJan 2013 → Nov 2016
- 3Cci East Texas Upstream LLCDec 2016 → Jan 2021
- 4TGNR East Texas LLCFeb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 626606-98 | Drill | Anadarko E&P Company LP | Jan 8, 2008 | Sep 27, 2006 | Dec 1, 2006 | 11,200 |
| 626606-99 | Drill | Anadarko E&P Company LP | Sep 26, 2006 | Sep 27, 2006 | Dec 1, 2006 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 13, 2007 | Maddox Estate Gas Unit G-6-234681 | Oak Hill (Cotton Valley) | TGNR East Texas LLC | Producing | 11,103 |
Formation tops
As filed on W-2/G-1. Subsea from 475 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 3,303 | -2,828 |
| Massive Anhy. | 6,336 | -5,861 |
| Pettit | 7,267 | -6,792 |
| Travis Peak | 7,489 | -7,014 |
| Cotton Valley | 9,304 | -8,829 |
| Bossier | 10,898 | -10,423 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,654 | 10,664 | Perforated |
| 10,762 | 10,772 | Perforated |
| 10,822 | 10,832 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,126 | 12.25 | 470 S |
| 5.5 | 11,103 | 7.875 | 1,715 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 14, 2008 | Mar 5, 2007 | Yes |
| 00 | May 2, 2008 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 16, 2008. Density, Neutron, Resistivity. 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 |
|---|---|---|---|---|
| COMBINATION: RESISTIVITY/NEUTRON/DENSITY POROSITYSpans Austin Chalk, Massive Anhy., Pettit, Travis Peak, Cotton Valley, Bossier | TIFF | 1,127 to 11,110 | Sep 16, 2008run Dec 22, 2006 | 6.02 |
"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 42-401-34080 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-401-34080 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/40134080, documented in the API reference.