42-115-31571

INJECTION

SOUTH WELCH UNIT

DAWSON County · District 8 · OXY USA WTP EOR LLC · WELCH

Permits

1

Max Depth

5,100 ft

First Permit

1981-08-06

Latest Activity

1981-08-06

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

1998-07-31

Shut-In

Plugged

P-5 Org Status: Active

!

EWA / Production operator mismatch

Scheduling: OXY USA WTP EOR LLC ≠ Production: OXY USA WTP LP (reported 2026-04)

!

EWA / Permit operator mismatch

Scheduling: OXY USA WTP EOR LLC ≠ Permit: CITIES SERVICE COMPANY

Resolved via: productionOXY USA WTP LP

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2026-07

H-1 Injection Active UIC #000044093 permitted 1993-04-07

Permitted Volume

850 bbl/d

Max Pressure

2,225 psi

Injection Interval

4,868–4,995 ft

Injected (12mo)

220,511 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-08-01)

Operator History

Chain of Custody

Lease Production

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

Formation Tops (3) Elevation 3,105 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 3,024 ft+81 ft
GRAYBURG 4,195 ft-1,090 ft
SAN ANDRES 4,448 ft-1,343 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 (1)

IntervalType
4,868–4,995 ftPerforated

Casing (3)

SizeSet DepthCement
8.625"1,870 ft900 sx
2.375"4,824 ft
5.5"5,036 ft1,150 sx

Permit History (1)

Applications (1)

#129072 A CITIES SERVICE COMPANY
received 1981-08-06

Records & Logs

3 completion filings on record.

W-2/G-1 2023-04-04
W-2/G-1 1999-04-12
W-2/G-1 1982-06-01
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 DAWSON County.

Well Details

Well Number
2111W
Max Depth
5,100 ft
Drill Type
Vertical
County
DAWSON
District
8
Completed
1998-07-31

Operator

Location
HOUSTON
P-5 Status
Active (filed 2026-01-07)
Cum Oil (all leases)
— bbl
Cum Gas (all leases)
— mcf
Activities
OPRS/G, OPRS/O