42-501-31558

DENVER UNIT

YOAKUM County · District 8 · OCCIDENTAL PERMIAN LTD. · WASSON

Permits

1

Max Depth

5,500 ft

First Permit

1978-03-20

Latest Activity

1978-03-20

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1988-06-25

Shut-In

Plugged

!

EWA / Permit operator mismatch

Scheduling: OCCIDENTAL PERMIAN LTD. ≠ Permit: SHELL OIL COMPANY

Resolved via: productionOCCIDENTAL PERMIAN LTD.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Active UIC #000075963 permitted 1991-11-21

Permitted Volume

4,500 bbl/d

Max Pressure

2,200 psi

Injection Interval

4,500–5,450 ft

Injected (12mo)

118,326 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-09-01)

Lease Production

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

Formation Tops (4) Elevation 3,585 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN 3,660 ft-75 ft
GRAYBURG 4,066 ft-481 ft
SAN ANDRES 4,346 ft-761 ft
SAN ANDRES 4,348 ft-763 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
4,944–5,038 ftPerforated
4,944–5,085 ftPerforated
4,944–5,138 ftPerforated
5,092–5,138 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"380 ft300 sx
7"5,171 ft1,400 sx

Permit History (1)

Applications (1)

#20780 A SHELL OIL COMPANY
received 1978-03-20

Records & Logs

6 completion filings on record.

W-2/G-1 2023-06-20
W-2/G-1 2018-10-29
W-2/G-1 2002-09-06
W-2/G-1 1989-06-23
W-2/G-1 1989-06-23
W-2/G-1 1978-06-22

Completion packets open directly (post-2011 filings include attached logs). Log images 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 YOAKUM County.

Well Details

Well Number
4120
Max Depth
5,500 ft
Drill Type
Vertical
County
YOAKUM
District
8
Completed
1988-06-25

Operator

Location
HOUSTON
P-5 Status
Active (filed 2026-02-02)
Cum Oil (all leases)
1,136,409,534 bbl
Cum Gas (all leases)
442,977,611 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
6,203