42-435-31984

RICHARDSON 139

SUTTON County · District 7 · ENERVEST OPERATING L.L.C. · SAWYER (LEONARD)

Permits

Max Depth

8,472 ft

First Permit

1977-09-29

Latest Activity

1979-08-23

Lifespan

2 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1979-09-18

Shut-In

—

Plugged

2017-06-22

EWA / Production operator mismatch

Scheduling: ENERVEST OPERATING L.L.C. ≠ Production: DOMINION OKLAHOMA TEXAS E&P, INC (reported 2007-05)

EWA / Permit operator mismatch

Scheduling: ENERVEST OPERATING L.L.C. ≠ Permit: HNG OIL COMPANY

Resolved via: scheduling → ENERVEST OPERATING L.L.C.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2017-06

Operator History

Chain of Custody

AMERICAN EXPLORATION COMPANY 1993-1995→ DREYFUS, LOUIS NATURAL GAS CORP 1995-2001→ DOMINION OKLAHOMA TEXAS E&P, INC 2001-2007

Lease Production

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

Formation Tops (5) Elevation 2,290 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TOP OF LEONARD (Leonard)	1,714 ft	+576 ft
TOP CANYON (Canyon)	6,011 ft	-3,721 ft
BASE CANYON (Canyon)	7,450 ft	-5,160 ft
TOP STRAWN (Strawn)	7,722 ft	-5,432 ft
TOP OF ELLENBURGER (Ellenburger)	8,347 ft	-6,057 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
1,714–1,808 ft	Perforated
6,335–6,916 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	560 ft	215 sx
7"	2,302 ft	750 sx
1.5"	6,923 ft	—

Permit History (2)

#56374 Other

RICHARDSON 139 · 8,472 ft

1979-08-23

#8824 Drill

RICHARDSON 139 · 8,300 ft

1977-09-29

Spud 1978-09-12

Applications (2)

#56374 A HNG OIL COMPANY

received 1979-08-23

#8824 A HNG OIL COMPANY

received 1977-09-29

Records & Logs

3 completion filings on record.

W-2/G-1 2017-03-21

W-2/G-1 1979-10-16

W-2/G-1 1979-01-30

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 SUTTON County.

Well Details

Well Number: 2
Max Depth: 8,472 ft
Drill Type: Vertical
County: SUTTON
District: 7
Operator: ENERVEST OPERATING L.L.C.
Completed: 1979-09-18

Operator

Name: ENERVEST OPER, L.L.C
Location: HOUSTON
P-5 Status: Active (filed 2026-01-13)
Cum Oil (all leases): 39,678,049 bbl
Cum Gas (all leases): 1,492,558,001 mcf
Activities: CSGD/G, G/PUR, GTHS/G, OPRS/G
Total Permits: 1,249