WELL · 42-479-38604 · DISTRICT 4
Macmahon #1ST
Webb County · Volz (Lobo) field · Temp Abandoned · Directional · Sidetrack
Macmahon #1ST (API 42-479-38604) is a well in Webb County operated by Columbus Energy LLC, completed March 15, 2004 and listed as temp abandoned on the RRC schedule, shut in December 1, 2005.
The RRC has issued one drilling permit (amended once), issued January 12, 2004, permitted to 6,850 ft.
It was permitted by Houston Exploration Company, The and has since transferred to Columbus Energy LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Wilcox, Wills Point.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Houston Exploration Company, The; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 51
- Phone
- (832) 432-8540
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Columbus Energy LLC |
| Production reports | Forest Oil Corporationthrough May 2010 |
| Latest permit | Houston Exploration Company, TheJan 12, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,850
- total depth, ft
- 2
- permits on file
- Jan 12, 2004
- last permit issued
- Mar 15, 2004
- completed
- 0
- cumulative oil, bbl
- 31.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2004 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 15, 2004
- Shut in
- Dec 1, 2005
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 |
|---|---|---|---|---|---|---|
| Macmahon G-4-202134 | Volz (Lobo) | Columbus Energy, LLC | 1 | 0 | 31.5K | Mar 2004 – Jul 2026 |
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.
- 1Houston Exploration Company, TheApr 2004 → Jan 2006
- 2Forest Oil CorporationOct 2008 → May 2010
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 540621-98 | Drill · sidetrack | Houston Exploration Company, The | Jun 7, 2004 | Jan 12, 2004 | Feb 2, 2004 | 6,850 |
| 540621-99 | Drill | Houston Exploration Company, The | Jan 12, 2004 | Jan 12, 2004 | — | 7,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 15, 2004 | Macmahon G-4-202134 | Volz (Lobo) | Columbus Energy LLC | Temp Abandoned · shut in Dec 1, 2005 | 6,850 |
Formation tops
As filed on W-2/G-1. Subsea from 490 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxWILCOX A | 4,930 | -4,440 |
| WilcoxTOP LOWER WILCOX | 6,410 | -5,920 |
| Wills Point | 6,950 | -6,460 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,413 | 6,426 | Perforated |
| 6,430 | 6,434 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 51 | 17.75 | 100 S |
| 10.75 | 750 | 14.75 | 620 S |
| 7 | 5,420 | 9.875 | 300 S |
| 3.5 | 6,817 | 6.25 | 375 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 12, 2004 | Jun 7, 2004 | Yes |
| 00 | Jul 14, 2004 | — | — |
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 42-479-38604 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-38604 → 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/47938604, documented in the API reference.