← Wells

42-451-00868

Final Completion

ROBERTSON J. D. -C-

TOM GREEN County · District 7 · MARATHON OIL COMPANY · SUSAN PEAK (STRAWN UPPER GAS)

Permits

1

Max Depth

5,075 ft

First Permit

1985-06-26

Latest Activity

1985-06-26

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

1993-02-01

!

EWA / Production operator mismatch

Scheduling: MARATHON OIL COMPANY ≠ Production: COSTILLA ENERGY, INC. (reported 1997-12)

Resolved via: scheduling → MARATHON OIL COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2018-05

Injection / Disposal

H-1 Injection Plugged 1993-02-26 UIC #000056439 permitted 1985-06-05

Permitted Volume

—

Max Pressure

—

Injection Interval

—

Injected (12mo)

—

Operator History

Chain of Custody

COSTILLA PETROLEUM CORPORATION 1996-1997→ COSTILLA ENERGY, INC. 1997-1997

Lease Production

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

Oil
production & DCA →

Formation Tops (5) Elevation 2,303 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
WOLFCAMP 2,129 ft+174 ft
CISCO 3,220 ft-917 ft
CANYON 4,374 ft-2,071 ft
UPPER STRAWN (Strawn)4,828 ft-2,525 ft
MAIN STRAWN4,937 ft-2,634 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 (2)

IntervalType
4,958–5,083 ftPerforated
?–4,940 ftPerforated

Casing (4)

SizeSet DepthCement
8.625"349 ft160 sx
8.625"349 ft160 sx
5.5"4,958 ft250 sx
5.5"4,966 ft250 sx

Permit History (1)

#278831 Recompletion Final Completion

ROBERTSON, JOHN D. "C" · 5,075 ft

1985-06-26

Applications (1)

#278831 A MARATHON OIL COMPANY
received 1985-06-26

Records & Logs

3 completion filings on record.

W-2/G-1 1986-12-12
W-2/G-1 1973-08-20
W-2/G-1 1984-01-12
Completion packets + logs ↗ Wellbore filings ↗

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 TOM GREEN County.

Well Details

Well Number
21
Max Depth
5,075 ft
Drill Type
Vertical
County
TOM GREEN
District
7
Operator
MARATHON OIL COMPANY

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-08-14)
Cum Oil (all leases)
183,150,113 bbl
Cum Gas (all leases)
1,013,063,895 mcf
Activities
CSGD/P, G/PUR
Total Permits
3,707