42-103-31751

BLOCK 31 UNIT

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

Permits

1

Max Depth

9,000 ft

First Permit

1977-08-18

Latest Activity

1977-08-18

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1977-10-25

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 (3) Elevation 2,542 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
ATOKA 7,363 ft-4,821 ft
WOODFORD 7,758 ft-5,216 ft
DEVONIAN 7,938 ft-5,396 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 (4)

IntervalType
7,985–8,020 ftPerforated
8,428–8,972 ftPerforated
8,605–8,680 ftPerforated
8,700–8,775 ftPerforated

Casing (3)

SizeSet DepthCement
8.625"2,550 ft800 sx
2.875"8,660 ft
5.5"8,960 ft1,900 sx

Permit History (1)

Applications (1)

#6210 A ATLANTIC RICHFIELD CO.
received 1977-08-18

Records & Logs

3 completion filings on record.

W-2/G-1 2023-07-20
W-2/G-1 2009-03-06
W-2/G-1 1977-11-04
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
A-5
Max Depth
9,000 ft
Drill Type
Vertical
County
CRANE
District
8
Completed
1977-10-25

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