WELL · 42-051-32919 · DISTRICT 3
Supak Mary #1
Burleson County · Caldwell (Austin Chalk) field · Horizontal · Sidetrack
Supak Mary #1 (API 42-051-32919) is a horizontal well in Burleson County operated by Union Pacific Resources Company, completed February 21, 1986.
The RRC has issued 2 drilling permits between 1986 and 1996, permitted to 8,500 ft.
It was permitted by Columbia Gas Development Corp. and has since transferred to Union Pacific Resources Company on the wellbore schedule.
Completion filings report 2 formation tops, including Austin Chalk, Eagle Ford.
Its 3 leases have reported 172K barrels of oil and 1.19M 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
Union Pacific Resources Company
Permitted by Columbia Gas Development Corp.; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Feb 9, 2001 · 5,638 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Union Pacific Resources Company |
| Production reports | Wildfire Energy Operating LLCthrough Mar 2026 |
| Latest permit | Columbia Gas Development Corp.Jan 10, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,500
- total depth, ft
- 2
- permits on file
- Jan 10, 1996
- last permit issued
- Feb 21, 1986
- completed
- 172K
- cumulative oil, bbl
- 1.19M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 21, 1986
- 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 3 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 |
|---|---|---|---|---|---|---|
| Supak, Mary O-3-23047 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | 1 | 172K | 1.19M | Feb 1996 – Jul 2026 |
| Supak, Mary O-3-19110 | Caldwell (Austin Chalk) | Columbia Gas Development Corp. | 1 | 3 | 843 | Jan 1993 – Jun 1996 |
| Supak, Mary G-3-145661 | Caldwell (Austin Chalk) | Columbia Gas Development Corp. | 1 | 0 | 2.82K | May 1993 – Mar 1996 |
Gas, mcf lease total
Last 12 months 1,559 · prior 12 7,116(-78%)
Oil, barrels lease total
Last 12 months 234 · prior 12 1,197(-80%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Bay Rock Operating CompanyJan 1993 → Jan 1993
- 2Partners Production, Inc.Feb 1993 → Sep 1995
- 3Columbia Gas Development Corp.Oct 1995 → Jan 1996
- 4Union Pacific Resources CompanyFeb 1996 → Jan 2001
- 5Rme Petroleum CompanyFeb 2001 → Nov 2002
- 6Anadarko E&P Company LPDec 2002 → Dec 2012
- 7Anadarko E&P Onshore LLCJan 2013 → Jun 2017
- 8Wildhorse Resources Mngt Co, LLCJul 2017 → May 2019
- 9Chesapeake Operating, L.L.C.Jun 2019 → Feb 2023
- 10Wildfire Energy Operating LLCMar 2023 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 443564-99 | Recompletion · sidetrack | Columbia Gas Development Corp. | Jan 9, 1996 | Jan 10, 1996 | Feb 2, 1996 | 8,300 |
| 295100-99 | Drill | Landmark Exploration Inc. | Dec 6, 1985 | Jan 13, 1986 | — | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-145661 | — | — | — | — |
| — | — O-3-19110 | — | — | — | — |
| — | — O-3-23047 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 370 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 7,600 | -7,230 |
| Austin Chalk | 7,693 | -7,323 |
| Eagle FordEAGLEFORD | 8,140 | -7,770 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,785 | 11,935 | Open hole |
| 7,925 | 8,140 | Open hole |
| 8,075 | 11,870 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,011 | 12.25 | 310 S |
| 8.625 | 1,011 | 12.5 | 310 S |
| 5.5 | 7,925 | 7.875 | 162 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 | Oct 2, 1996 | Mar 28, 1996 | Yes |
| 00 | Sep 19, 1996 | — | — |
| 00 | Jul 27, 1993 | May 13, 1993 | — |
| 00 | Jul 8, 1993 | — | — |
| 00 | Mar 31, 1986 | Mar 5, 1986 | Yes |
| 00 | Mar 25, 1986 | — | — |
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 42-051-32919 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-051-32919 → 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/05132919, documented in the API reference.