WELL · 42-355-31807 · DISTRICT 4
Hefte Mary Tom Trust #10
Nueces County · Agua Dulce (6240) field · Vertical
Hefte Mary Tom Trust #10 (API 42-355-31807) is a plugged well in Nueces County, plugged October 13, 2022, last operated by Harper Hefte Inc..
The RRC has issued 2 drilling permits between 1981 and 1999, permitted to 7,500 ft.
Completion filings report 3 formation tops, including Catahoula, Comstock, Frio.
Its 2 leases have reported 9.94K barrels of oil and 196K mcf of gas since January 1993, last reporting in October 2022. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Corpus Christ, TX · P-5 Y, filed Feb 4, 2026 · 87 permits on file · (361) 877-1694
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Harper Hefte Inc. |
| Production reports | Harper Hefte, Inc.through Dec 2021 |
| Latest permit | Harper Hefte, Inc.Jun 18, 1999 |
- 7,500
- total depth, ft
- 2
- permits on file
- Jun 18, 1999
- last permit issued
- Sep 2, 1981
- completed
- 9.94K
- cumulative oil, bbl
- 196K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 2022
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 2, 1981
- Shut in
- —
- Plugged
- Oct 13, 2022
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 |
|---|---|---|---|---|---|---|
| Hefte, Mary Tom Trust G-4-173526 | Agua Dulce (Consolidated Frio) | Harper Hefte, Inc. | 1 | 0 | 147K | Jun 1999 – Oct 2022 |
| Hefte, Mary Tom Trust O-4-9866 | Agua Dulce (6240) | Harper Hefte, Inc. | 1 | 9.94K | 49K | Jan 1993 – Oct 1999 |
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.
- 1Harper Hefte, Inc.Jan 1993 → Dec 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 485254-99 | Recompletion | Harper Hefte, Inc. | Jun 16, 1999 | Jun 18, 1999 | Jan 23, 1999 | 7,500 |
| 124740-99 | Drill | Harper Hefte, Inc. | Apr 16, 1981 | Apr 16, 1981 | Apr 23, 1981 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-173526 | — | — | — | — |
| — | — O-4-9866 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 114 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,253 | 6,257 | Perforated |
| 6,515 | 6,519 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,216 | 12.25 | — |
| 2.375 | 6,150 | — | 565 S |
| 4.5 | 7,350 | 7.875 | — |
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 | Mar 6, 2000 | Jul 1, 1999 | — |
| 00 | Aug 4, 1999 | Jul 1, 1999 | — |
| 00 | Jul 26, 1999 | — | — |
| 00 | Jan 12, 1984 | Sep 8, 1981 | — |
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 42-355-31807 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-355-31807 → 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/35531807, documented in the API reference.