42-103-31836

BLOCK 31 UNIT

CRANE County · District 8 · OXY USA EOR LLC · BLOCK 31 (DEVONIAN)

Permits

1

Max Depth

9,100 ft

First Permit

1978-04-03

Latest Activity

1978-04-03

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1978-07-19

Shut-In

Plugged

!

EWA / Production operator mismatch

Scheduling: OXY USA EOR LLC ≠ Production: OXY USA INC. (reported 2026-04)

!

EWA / Permit operator mismatch

Scheduling: OXY USA EOR LLC ≠ Permit: ATLANTIC RICHFIELD CO.

Resolved via: productionOXY USA INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2026-07

Lease Production

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

Formation Tops (6) Elevation 2,556 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
GRAYBURG 2,927 ft-371 ft
GLORIETA 4,120 ft-1,564 ft
PENN (Pennsylvanian)7,090 ft-4,534 ft
PENNSYLVANIAN 7,090 ft-4,534 ft
ATOKA 7,476 ft-4,920 ft
DEVONIAN 8,024 ft-5,468 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 (5)

IntervalType
8,106–8,116 ftPerforated
8,106–8,707 ftPerforated
8,106–8,936 ftPerforated
8,107–8,931 ftPerforated
8,524–8,936 ftPerforated

Casing (4)

SizeSet DepthCement
8.625"2,542 ft825 sx
8.625"2,542 ft850 sx
5.5"9,000 ft1,650 sx
5.5"9,000 ft1,650 sx

Permit History (1)

Applications (1)

#22007 A ATLANTIC RICHFIELD CO.
received 1978-04-03

Records & Logs

5 completion filings on record · 1 with log images at RRC.

W-2/G-1 2023-07-20 log on file
W-2/G-1 2009-01-29
W-2/G-1 1989-05-12
W-2/G-1 1978-08-02
W-2/G-1 1978-08-02
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 CRANE County.

Well Details

Well Number
K-7
Max Depth
9,100 ft
Drill Type
Vertical
County
CRANE
District
8
Completed
1978-07-19

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-12-22)
Cum Oil (all leases)
— bbl
Cum Gas (all leases)
— mcf
Activities
OPRS/G, OPRS/O