WELL · 42-057-31423 · DISTRICT 2
Welder Mrs. E.H. #55
Calhoun County · Heyser S. (5400 #2) field · Directional
Welder Mrs. E.H. #55 (API 42-057-31423) is a well in Calhoun County operated by Unit Petroleum Company, completed June 25, 1987.
The RRC has issued 2 drilling permits between 1987 and 1996, permitted to 9,800 ft.
Its 3 leases have reported 52.2K barrels of oil and 98K mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit.
Operator of record
Tulsa, OK · P-5 Y, filed Dec 4, 2025 · 1,100 permits on file · (918) 493-7700
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unit Petroleum Company |
| Production reports | Unit Petroleum Companythrough May 1998 |
| Latest permit | Unit Petroleum CompanyMay 21, 1996 |
- 9,800
- total depth, ft
- 2
- permits on file
- May 21, 1996
- last permit issued
- Jun 25, 1987
- completed
- 52.2K
- cumulative oil, bbl
- 98K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 25, 1987
- 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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welder, E.H. Mrs O-2-8264 | Heyser (5400 #1) | B&L Resources, L.L.C. | 1 | 23.9K | 50.5K | Aug 1996 – Jul 2026 |
| Welder, Mrs. E.H. O-2-5637 | Heyser, S. (5400 #2) | Unit Petroleum Company | 4 | 28.2K | 14.3K | Jan 1993 – Aug 2002 |
| Welder, E. H. Mrs. G-2-158726 | Heyser (5400 #1) | Unit Petroleum Company | 1 | 0 | 33.2K | Apr 1996 – Aug 1997 |
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.
- 1Exxon Corp.Jan 1993 → Nov 1995
- 2Unit Petroleum CompanyDec 1995 → May 1998
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 448372-99 | Recompletion | Unit Petroleum Company | May 21, 1996 | May 21, 1996 | Apr 18, 1996 | 8,207 |
| 326811-99 | Drill | Exxon Corp. | Feb 19, 1987 | Apr 2, 1987 | — | 9,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-158726 | — | — | — | — |
| — | — O-2-5637 | — | — | — | — |
| — | — O-2-8264 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,428 | 5,433 | Perforated |
| 5,684 | 5,692 | Perforated |
| 5,738 | 5,744 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,664 | 12.25 | 655 S |
| 5.5 | 5,994 | 8.333 | 660 S |
| 5.5 | 5,994 | 8.75 | 660 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 | Sep 5, 2000 | Apr 4, 2000 | Yes |
| 00 | Jun 19, 2000 | Apr 21, 2000 | — |
| 00 | Nov 14, 1997 | Oct 17, 1997 | — |
| 00 | Aug 6, 1997 | — | — |
| 00 | Aug 30, 1996 | May 24, 1996 | Yes |
| 00 | Jul 9, 1996 | — | — |
| 00 | Jul 31, 1987 | Jul 1, 1987 | Yes |
| 00 | Jul 21, 1987 | — | — |
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 42-057-31423 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-057-31423 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 205K
- bbl, all reported
- Aug 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000089654 | H-1 Injection | Active | 250 | 2,675 | 5,350–5,700 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
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/05731423, documented in the API reference.