← Wells

42-135-33185

Final Completion

JOHNSON, J. L. "31"

ECTOR County · District 8 · GREAT WESTERN DRLG. CO.

Permits

1

Max Depth

4,500 ft

First Permit

1979-06-29

Latest Activity

1979-06-29

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

ECTOR County disposal market →
H-1 Injection Active UIC #000013084 permitted 2009-05-22

Permitted Volume

1,000 bbl/d

Max Pressure

1,500 psi

Injection Interval

4,225–4,504 ft

Injected (12mo)

—

Monthly injected volume (bbl, from H-10 filings through 2025-10-01)

Operator History

Chain of Custody

GREAT WESTERN DRILLING COMPANY 1993-2024→ BASIN OIL & GAS OPERATING, LLC 2024-2026

Lease Production

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

Oil
production & DCA →

Formation Tops (3) Elevation 2,901 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SEVEN RIVERS 3,016 ft-115 ft
QUEEN 3,356 ft-455 ft
GRAYBURG LIME (Grayburg)3,900 ft-999 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 (1)

IntervalType
4,225–4,504 ftPerforated

Casing (3)

SizeSet DepthCement
8.625"341 ft210 sx
2.375"4,186 ft—
5.5"4,511 ft550 sx

Permit History (1)

#51901 Drill Final Completion

JOHNSON, J. L. "31" · 4,500 ft

1979-06-29

Spud 1979-10-24

Applications (1)

#51901 A GREAT WESTERN DRLG. CO.
received 1979-06-29

Records & Logs

3 completion filings on record.

W-2/G-1 2024-09-04
W-2/G-1 1979-12-17
W-2/G-1 1984-01-12
Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library 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 ECTOR County.

Well Details

Well Number
21W
Max Depth
4,500 ft
Drill Type
Vertical
County
ECTOR
District
8
Operator
GREAT WESTERN DRLG. CO.

Operator

Location
MIDLAND
P-5 Status
Inactive (filed 2024-04-17)
Cum Oil (all leases)
27,863,197 bbl
Cum Gas (all leases)
9,152,249 mcf
Total Permits
408