WELL · 42-355-31566 · DISTRICT 4
Hefte Mary Tom et AL #9
Nueces County · Agua Dulce (Rivers) field · Vertical
Hefte Mary Tom ET AL #9 (API 42-355-31566) is a plugged well in Nueces County, plugged August 29, 2007, last operated by Harper Hefte Inc..
The RRC has issued 2 drilling permits between 1980 and 1987, permitted to 6,700 ft.
Completion filings report 3 formation tops, including Catahoula, Comstock, Frio.
Its 2 leases have reported 705 barrels of oil and 14.9K mcf of gas since January 1993, last reporting in January 2020. 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 2004 |
| Latest permit | Harper Hefte, Inc.Nov 18, 1987 |
- 6,700
- total depth, ft
- 2
- permits on file
- Nov 18, 1987
- last permit issued
- May 22, 1980
- completed
- 705
- cumulative oil, bbl
- 14.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jan 2020
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 22, 1980
- Shut in
- —
- Plugged
- Aug 29, 2007
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 T. Etal O-4-13019 | Agua Dulce (Consolidated Frio) | Harper Hefte, Inc. | 1 | 705 | 0 | Mar 2001 – Jan 2020 |
| Hefte, Mary T. et AL G-4-125875 | Agua Dulce (Stray 6140) | Harper Hefte, Inc. | 1 | 0 | 14.9K | Jan 1993 – Mar 2001 |
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.Aug 1997 → Dec 2004
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 338849-99 | Recompletion | Harper Hefte, Inc. | Nov 16, 1987 | Nov 18, 1987 | — | 6,700 |
| 79260-99 | Drill | Hefte, Mary Tom | Apr 25, 1980 | Apr 25, 1980 | — | 6,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-125875 | — | — | — | — |
| — | — O-4-13019 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 93 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,304 | 5,310 | Perforated |
| 5,920 | 5,925 | Perforated |
| 6,147 | 6,152 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,182 | 12.25 | 510 S |
| 2.375 | 5,266 | — | — |
| 4.5 | 6,225 | 7.875 | 310 S |
| 4.2 | 6,225 | 7.875 | 310 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 | Jul 23, 2001 | May 8, 2001 | — |
| 00 | Jun 5, 2001 | — | — |
| 00 | Apr 4, 1988 | Nov 12, 1987 | — |
| 00 | Jan 6, 1988 | — | — |
| 00 | Jan 12, 1984 | Jun 20, 1980 | — |
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 42-355-31566 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-355-31566 → 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/35531566, documented in the API reference.