WELL · 42-049-35046 · DISTRICT 7
Mayfield C. W. #1
Brown County · Byler H (Marble Falls) field · Vertical
Mayfield C. W. #1 (API 42-049-35046) is a plugged well in Brown County, plugged July 22, 2015, last operated by Tayco Petroleum.
The RRC has issued one drilling permit, issued July 21, 1988, permitted to 3,000 ft.
Completion filings report 4 formation tops, including Caddo, Marble Falls, Mississippian, Ellenburger.
Operator of record
Abilene, TX · P-5 Y, filed Apr 3, 1998 · 1 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tayco Petroleum |
| Production reports | Newton Well Servicethrough Dec 2011 |
| Latest permit | Tayco PetroleumJul 21, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,000
- total depth, ft
- 1
- permits on file
- Jul 21, 1988
- last permit issued
- Oct 19, 1988
- completed
- 0
- cumulative oil, bbl
- 47.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 2015
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 19, 1988
- Shut in
- —
- Plugged
- Jul 22, 2015
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mayfield, C. W. G-8-142522 | Byler H (Marble Falls) | Newton Well Service | 1 | 0 | 47.7K | Jan 1993 – Oct 2015 |
| Mayfield, C. W. O-8-25348 | Byler H (Marble Falls) | Tayco Petroleum | 1 | 0 | 0 | Jan 1993 – May 1993 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tayco PetroleumJan 1993 → Mar 1994
- 2Gopher EnterprisesApr 1994 → Nov 2000
- 3Newton Well ServiceDec 2000 → Dec 2011
- 4Terrick ResourcesJul 2003 → Jul 2005
- 5Thrifty Well ServiceAug 2005 → Dec 2006
- 6Eagle Energy CorporationJan 2007 → Sep 2007
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 349190-99 | Drill | Tayco Petroleum | Jul 21, 1988 | Jul 21, 1988 | — | 3,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-8-142522 | — | — | — | — |
| — | — O-8-25348 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,626 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Caddo | 1,664 | -38 |
| Marble Falls | 2,280 | -654 |
| MississippianMISSISSIPPI | 2,582 | -956 |
| Ellenburger | 2,752 | -1,126 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,282 | 2,330 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 251 | 12.25 | 160 S |
| 4.5 | 2,786 | 7.875 | 175 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 | Dec 9, 1992 | Oct 6, 1992 | — |
| 00 | Oct 13, 1992 | — | — |
| 00 | May 22, 1989 | Apr 4, 1989 | Yes |
| 00 | May 12, 1989 | — | — |
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 42-049-35046 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-049-35046 → 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/04935046, documented in the API reference.