TEXAS · WELLS · NACOGDOCHES COUNTY · MAST, L.B. LEASE · API 42-347-32653 · DISTRICT 06
Mast L.B. #1H
Nacogdoches County · Loco Bayou (James Lime) field · Producing · Horizontal
Mast L.B. #1H (API 42-347-32653) is a horizontal well in Nacogdoches County operated by Atlas Operating LLC, completed March 1, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 12, 2007, permitted to 9,230 ft.
It was permitted by ST. Mary Land & Exploration CO. and has since transferred to Atlas Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Austin Chalk, Glen Rose, BMA, Bexar.
Its lease has reported 433 barrels of oil and 1.85M mcf of gas since March 2008, last reporting volume in March 2026.
Operator of record
Permitted by St. Mary Land & Exploration Co.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Hearing (H)
- P-5 last filed
- Mar 9, 2026
- Permits on file
- 78
- Phone
- (281) 893-9400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Atlas Operating LLC |
| Production reports | Atlas Operating LLCthrough Mar 2026 |
| Latest permit | St. Mary Land & Exploration Co.Oct 12, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,230
- total depth, ft
- 1
- permits on file
- Oct 12, 2007
- last permit issued
- Mar 1, 2008
- completed
- 433
- cumulative oil, bbl
- 1.85M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2008 THROUGH Mar 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 1, 2008
- 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mast, L.B. G-6-235211 | Loco Bayou (James Lime) | Atlas Operating LLC | 1 | 433 | 1.85M | Mar 2008 – Mar 2026 |
Gas, mcf lease total
Last 12 months 30,825 · prior 12 29,841(+3%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1St. Mary Land & Exploration Co.Mar 2008 → Jun 2010
- 2SM Energy CompanyJul 2010 → Jun 2015
- 3Aethon Energy Operating LLCJul 2015 → Jan 2020
- 4BRG Lone Star Ltd.Feb 2020 → Feb 2026
- 5Atlas Operating LLCMar 2026 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 647369-99 | Drill | St. Mary Land & Exploration Co. | Oct 8, 2007 | Oct 12, 2007 | Jan 5, 2005 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 1, 2008 | Mast L.B. G-6-235211 | Loco Bayou (James Lime) | Atlas Operating LLC | Producing | 9,230 |
Formation tops
As filed on W-2/G-1. Subsea from 222 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkTOP AUSTIN CHALK | 5,254 | -5,032 |
| Austin ChalkBASE AUSTIN CHALK | 5,532 | -5,310 |
| Glen Rose | 6,904 | -6,682 |
| BMA | 8,553 | -8,331 |
| Bexar | 8,936 | -8,714 |
| James LimeTOP JAMES | 9,073 | -8,851 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,712 | 14,935 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,207 | 12.25 | 1,285 S |
| 7 | 9,714 | 8.75 | 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. 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 | Jun 4, 2008 | Apr 3, 2008 | Yes |
| 00 | May 23, 2008 | — | — |
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 42-347-32653 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-347-32653 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/34732653, documented in the API reference.