42-355-31807

Final Completion

HEFTE MARY TOM TRUST

NUECES County · District 4 · HARPER HEFTE INC. · AGUA DULCE (6240)

Permits

Max Depth

7,500 ft

First Permit

1981-04-16

Latest Activity

1999-06-18

Lifespan

18 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1981-09-02

Shut-In

—

Plugged

2022-10-13

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2022-10

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (3) Elevation 114 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CATAHOULA	3,830 ft	-3,716 ft
COMSTOCK	4,810 ft	-4,696 ft
FRIO	5,160 ft	-5,046 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (2)

Interval	Type
6,253–6,257 ft	Perforated
6,515–6,519 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	1,216 ft	—
2.375"	6,150 ft	565 sx
4.5"	7,350 ft	—

Permit History (2)

#485254 Recompletion Final Completion

HEFTE, MARY TOM TRUST · 7,500 ft

1999-06-18

Spud 1999-01-23

#124740 Drill Long String Casing

HEFTE, MARY TOM TRUST · 7,500 ft

1981-04-16

Spud 1981-04-23

Applications (2)

#485254 A HARPER HEFTE, INC.

received 1999-06-16

#124740 A HARPER HEFTE, INC.

received 1981-04-16

Records & Logs

4 completion filings on record.

W-2/G-1 1999-07-01

W-2/G-1 1999-07-26

W-2/G-1 1981-09-08

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in NUECES County.

Well Details

Well Number: 10
Max Depth: 7,500 ft
Drill Type: Vertical
County: NUECES
District: 4
Operator: HARPER HEFTE INC.
Completed: 1981-09-02

Operator

Name: HARPER HEFTE, INC
Location: CORPUS CHRI, ST
P-5 Status: Active (filed 2026-04-16)
Cum Oil (all leases): 247,395 bbl
Cum Gas (all leases): 4,331,023 mcf
Activities: CSGD/P, G/PUR, OPRS/G
Total Permits: 87