42-103-33995

BLOCK 31 UNIT

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

Permits

4

Max Depth

9,380 ft

First Permit

1989-10-30

Latest Activity

2018-03-07

Lifespan

28 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1990-01-17

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: OXY USA INC.

Resolved via: productionOXY USA INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Inactive UIC #000072699 permitted 1990-04-17

Permitted Volume

6,000 mcf/d

Max Pressure

5,500 psi

Injection Interval

8,200–9,200 ft

Injected (12mo)

Seismicity: no M2+ earthquakes recorded within 10 km in the last 24 months · TexNet catalog

Lease Production

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

Formation Tops (8) Elevation 2,587 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
CANYON 7,411 ft-4,824 ft
STRAWN 7,566 ft-4,979 ft
ATOKA 7,677 ft-5,090 ft
BARNETT SHALE (Barnett)7,735 ft-5,148 ft
WOODFORD LIME (Woodford)8,140 ft-5,553 ft
MISS LIME (Mississippian)8,210 ft-5,623 ft
UPPER DEVONIAN (Devonian)8,277 ft-5,690 ft
DEVONIAN 8,300 ft-5,713 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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
42-103-33943 BLOCK 31 UNIT · OXY USA INC.
0.3 mi
Canyon 7,350'Strawn 7,534'Atoka 7,647'Barnett 7,764'Barnett 7,772'Mississippian 8,062'Woodford 8,080'Devonian 8,257'
42-103-34231 BLOCK 31 UNIT · OXY USA INC.
0.3 mi
Cisco 7,162'Canyon 7,388'Strawn 7,549'Atoka 7,712'Barnett 7,768'Mississippian 8,089'Woodford 8,110'Devonian 8,277'Devonian 8,280'
42-103-32936 BLOCK 31 UNIT · OXY USA INC.
0.4 mi
Grayburg 2,976'Wolfcamp 6,880'Cisco 7,211'Canyon 7,474'Strawn 7,640'Atoka 7,751'Barnett 7,889'
42-103-32080 BLOCK 31 UNIT · OXY USA INC.
0.4 mi
CICSO 7,167'Strawn 7,527'Morrow 7,757'
42-103-33583 BLOCK 31 UNIT · OXY USA INC.
0.5 mi
Wolfcamp 6,879'Pennsylvanian 7,194'Cisco 7,390'Atoka 7,740'Barnett 7,797'Woodford 8,120'Devonian 8,326'
42-103-33098 BLOCK 31 UNIT · OXY USA INC.
0.5 mi
Grayburg 3,008'Glorieta 4,234'Barnett 7,988'
42-103-32652 BLOCK 31 UNIT · OXY USA INC.
0.6 mi
Grayburg 2,975'Glorieta 4,185'Glorieta 4,185'Tubb 5,020'Pennsylvanian 7,208'Barnett 7,900'Devonian 8,464'
42-103-33864 BLOCK 31 UNIT · OXY USA INC.
0.6 mi
Barnett 7,925'Mississippian 8,278'Woodford 8,295'Devonian 8,467'San Angelo Seven Rivers Glorieta San Andres Mississippian Rustler Grayburg Woodford +2 more

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (2)

IntervalType
7,424–7,592 ftPerforated
8,384–9,146 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"723 ft575 sx
8.625"3,630 ft1,550 sx
5.5"9,300 ft1,350 sx

Permit History (4)

Applications (4)

#836913 A OXY USA INC.
received 2019-02-25
#836913 A OXY USA INC.
received 2018-02-28
#365650 A ARCO OIL & GAS CO.
received 1990-01-24
#365650 A ARCO OIL & GAS CO.
received 1989-10-26

Records & Logs

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

W-2/G-1 2018-08-08
W-2/G-1 1990-04-02 log on file
W-2/G-1 1990-04-13
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.

Lat 31.476759
Lon -102.439600

Well Details

Well Number
F 8F
Max Depth
9,380 ft
Drill Type
Vertical
County
CRANE
District
8
Completed
1990-01-17

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