WELL · 42-287-31091 · DISTRICT 3
Mary Helen Unit #3RE
Lee County · Giddings (Austin Chalk-3) field · Horizontal
Mary Helen Unit #3RE (API 42-287-31091) is a horizontal well in Lee County operated by Magnolia Oil & Gas Operating LLC, completed November 14, 1985.
The RRC has issued 2 drilling permits (amended once) between 1981 and 2004, permitted to 9,400 ft.
It was permitted by U. S. Operating, Inc. and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Pecan Gap, Austin Chalk, Eagle Ford.
Its 2 leases have reported 145K barrels of oil and 1.98M 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.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by U. S. Operating, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 4, 2026 · 615 permits on file · (713) 345-6206
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Magnolia Oil & Gas Operating LLC |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Apr 2026 |
| Latest permit | U. S. Operating, Inc.Jul 14, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,400
- total depth, ft
- 3
- permits on file
- Jul 14, 2004
- last permit issued
- Nov 14, 1985
- completed
- 145K
- cumulative oil, bbl
- 1.98M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 14, 1985
- 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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary Helen Unit O-3-14976 | Giddings (Austin Chalk-3) | Magnolia Oil & Gas Operating LLC | 5 | 141K | 1.92M | Jan 1993 – Jul 2026 |
| Elvira O-3-15367 | Giddings (Austin Chalk-3) | U. S. Operating, Inc. | 1 | 4K | 53.6K | Jan 1993 – Sep 2004 |
Gas, mcf lease total
Last 12 months 6,844 · prior 12 15,105(-55%)
Oil, barrels lease total
Last 12 months 125 · prior 12 466(-73%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hallwood Petroleum, Inc.Jan 1993 → Feb 1995
- 2U. S. Operating, Inc.Jan 1993 → Jul 2025
- 3Magnolia Oil & Gas Operating LLCAug 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 546885-99 | Recompletion | U. S. Operating, Inc. | Jun 14, 2004 | Jul 14, 2004 | — | 8,700 |
| 140122-98 | Drill | U. S. Operating, Inc. | Oct 18, 2002 | Nov 10, 1981 | — | 8,700 |
| 140122-99 | Drill | U. S. Operating, Inc. | Nov 10, 1981 | Nov 10, 1981 | — | 9,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-14976 | — | — | — | — |
| — | — O-3-14976 | — | — | — | — |
| — | — O-3-15367 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 347 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 7,340 | -6,993 |
| Austin Chalk | 7,932 | -7,585 |
| Austin Chalk | 7,950 | -7,603 |
| Eagle FordEAGLEFORD | 8,625 | -8,278 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,004 | 8,158 | Perforated |
| 8,130 | 10,054 | Perforated |
| 8,394 | 8,615 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,233 | 12.25 | 485 S |
| 7 | 7,897 | 8.75 | 975 S |
| 2 | 8,290 | — | — |
| 7 | — | 8.75 | 725 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 | Jan 24, 2005 | Sep 27, 2004 | Yes |
| 00 | Nov 5, 2004 | Nov 17, 1986 | — |
| 00 | Sep 7, 2004 | Nov 17, 1986 | — |
| 00 | Dec 8, 1986 | Nov 17, 1986 | — |
| 00 | Jan 12, 1984 | Mar 22, 1982 | — |
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 42-287-31091 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-287-31091 → 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/28731091, documented in the API reference.