WELL · 42-349-33050 · DISTRICT 5
Caston #1
Navarro County · Roundhouse (Haynesville) field · Vertical
Caston #1 (API 42-349-33050) is a well in Navarro County operated by Marathon Oil Company, completed February 20, 1983.
The RRC has issued 2 drilling permits between 1982 and 1992, permitted to 11,300 ft.
Completion filings report 6 formation tops, including Glen Rose, Rodessa, Pettit, Travis Peak.
Its 2 leases have reported 32.1K barrels of oil and 109K mcf of gas since January 1993, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Apr 4, 2026 · 3,707 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | Ursus Oil and Gasthrough Jul 2025 |
| Latest permit | Marathon Oil CompanyDec 29, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,300
- total depth, ft
- 2
- permits on file
- Dec 29, 1992
- last permit issued
- Feb 20, 1983
- completed
- 32.1K
- cumulative oil, bbl
- 109K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 20, 1983
- Shut in
- —
- Plugged
- —
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 2 leases 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 |
|---|---|---|---|---|---|---|
| Caston O-5-3439 | Pan Ware (Rodessa) | Ursus Oil and Gas | 2 | 32.1K | 109K | Jan 1993 – Jul 2026 |
| Caston G-5-104481 | Roundhouse (Haynesville) | Marathon Oil Company | 1 | 0 | 0 | Jan 1993 – Mar 1993 |
Oil, barrels lease total
Last 12 months 12 · prior 12 42(-71%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1993 → May 1995
- 2Map Production Co., Inc.Jun 1995 → Feb 2005
- 3Samson Lone Star LPMar 2005 → Jun 2007
- 4Samson Lone Star, LLCJul 2007 → Nov 2009
- 5Ironwood Oil & Gas LLCDec 2009 → Jun 2014
- 6Cl&f Operating LLCJul 2014 → Mar 2015
- 7Ursus Oil and GasMay 2015 → Jul 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 407584-99 | Recompletion | Marathon Oil Company | Dec 22, 1992 | Dec 29, 1992 | Oct 9, 1992 | 10,800 |
| 181466-99 | Drill | TXO Production Corp. | Dec 23, 1982 | Dec 23, 1982 | Jan 13, 1983 | 11,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-5-104481 | — | — | — | — |
| — | — O-5-3439 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 331 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Glen Rose | 5,223 | -4,892 |
| Rodessa | 6,393 | -6,062 |
| Pettit | 6,948 | -6,617 |
| Travis Peak | 7,105 | -6,774 |
| Bossier | 9,935 | -9,604 |
| Cotton ValleyCOTTON VALLEY LIME | 10,545 | -10,214 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,418 | 6,423 | Perforated |
| 10,666 | 10,743 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 100 | 20 | 56 S |
| 8.625 | 4,180 | 11 | 1,375 S |
| 5.5 | 10,800 | 7.875 | 1,200 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 | May 13, 1993 | Jan 27, 1993 | Yes |
| 00 | Mar 2, 1993 | — | — |
| 00 | Jan 12, 1984 | Mar 22, 1983 | — |
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 42-349-33050 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-349-33050 → 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.
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/34933050, documented in the API reference.