42-103-33864

BLOCK 31 UNIT

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

Permits

3

Max Depth

9,500 ft

First Permit

1988-06-02

Latest Activity

2018-03-12

Lifespan

30 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1988-11-18

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 Cancelled 2019-09-25 UIC #000065989 permitted 1988-04-08

Permitted Volume

5,000 mcf/d

Max Pressure

Injection Interval

8,470–9,470 ft

Injected (12mo)

Monthly injected volume (bbl, from H-10 filings through 2019-06-01)

Seismicity: 1 earthquake M2+ within 10 km in the last 24 months (max M2.0) · TexNet catalog

Lease Production

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

Formation Tops (14) Elevation 2,585 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
BARNETT SHALE (Barnett)7,925 ft-5,340 ft
MISS LIME (Mississippian)8,278 ft-5,693 ft
WOODFORD SHALE (Woodford)8,295 ft-5,710 ft
DEVONIAN 8,467 ft-5,882 ft
BARNETT SHALE (Barnett)
GLORIETA
GRAYBURG - ACTIVE CO2 FLOOD (Grayburg)
MISS LIME (Mississippian)
RUSTLER
SAN ANDRES - USABLE QUALITY WATE (San Andres)
SAN ANGELO
SEVEN RIVERS
WOODFORD SHALE (Woodford)
YATES

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
42-103-33098 BLOCK 31 UNIT · OXY USA INC.
0.2 mi
Grayburg 3,008'Glorieta 4,234'Barnett 7,988'
42-103-33364 STATE -LB- · SCOUT ENERGY MANAGEMENT LLC
0.4 mi
MCKINGHT 3,958'McKnight 3,958'San Angelo 4,238'Clear Fork 4,603'Tubb 5,214'Wolfcamp 6,953'Devonian 8,860'
42-103-33995 BLOCK 31 UNIT · OXY USA INC.
0.6 mi
Canyon 7,411'Strawn 7,566'Atoka 7,677'Barnett 7,735'Woodford 8,140'Mississippian 8,210'Devonian 8,277'Devonian 8,300'
42-103-33583 BLOCK 31 UNIT · OXY USA INC.
0.7 mi
Wolfcamp 6,879'Pennsylvanian 7,194'Cisco 7,390'Atoka 7,740'Barnett 7,797'Woodford 8,120'Devonian 8,326'
42-103-33943 BLOCK 31 UNIT · OXY USA INC.
0.7 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'
42-103-32936 BLOCK 31 UNIT · OXY USA INC.
0.8 mi
Grayburg 2,976'Wolfcamp 6,880'Cisco 7,211'Canyon 7,474'Strawn 7,640'Atoka 7,751'Barnett 7,889'
42-103-34231 BLOCK 31 UNIT · OXY USA INC.
0.8 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'
42-103-32080 BLOCK 31 UNIT · OXY USA INC.
1.0 mi
CICSO 7,167'Strawn 7,527'Morrow 7,757'

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 (3)

IntervalType
7,516–7,609 ftPerforated
8,510–8,548 ftPerforated
8,941–9,100 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"715 ft600 sx
8.625"3,615 ft1,450 sx
5.5"9,490 ft1,430 sx

Permit History (3)

Applications (3)

#837278 A OXY USA INC.
received 2019-03-05
#837278 A OXY USA INC.
received 2018-03-08
#346959 A ARCO OIL & GAS CO.
received 1988-05-25

Records & Logs

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

W-2/G-1 2019-03-11
W-2/G-1 1989-02-02 log on file
W-2/G-1 1989-02-10
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 31.484867
Lon -102.437861

Well Details

Well Number
T 9N
Max Depth
9,500 ft
Drill Type
Vertical
County
CRANE
District
8
Completed
1988-11-18

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