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42-283-37638

SHUT IN Horizontal

Y-BAR

LA SALLE County · District 1 · CASTLEROCK EF OPERATING LLC · EAGLEVILLE (EAGLE FORD-1)

Permits

1

Max Depth

10,000 ft

First Permit

2024-03-20

Latest Activity

2024-03-20

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-04-25

Shut-In

—

Plugged

—

P-5 Org Status: X

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2011-07

Last Production

2026-07

Operator History

Chain of Custody

MURPHY EXPL. & PROD. CO. - USA 2011-2022→ CASTLEROCK EF OPERATING LLC 2022-2026

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 (10) Elevation 365 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
AUSTIN CHALK 9,460 ft-9,095 ft
EAGLE FORD - H2S (Eagle Ford)9,516 ft-9,151 ft
BUDA - H2S (Buda)——
EDWARDS - H2S (Edwards)——
ESCONDIDO ——
OLMOS - DISPOSAL (Olmos)——
QUEEN CITY ——
SPARTA ——
WILCOX - DISPOSAL (Wilcox)——
YEGUA ——

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
✓ 42-283-37639 Y-BAR · CASTLEROCK EF OPERATING LLC
0.0 mi
Anacacho 8,905'Anacacho 9,380'Austin Chalk 9,482'Eagle Ford 9,543'Sparta —Wilcox —Olmos —Yegua —Escondido —Queen City —
✓ 42-283-37637 Y-BAR · CASTLEROCK EF OPERATING LLC
0.0 mi
Anacacho 8,878'Anacacho 9,344'Austin Chalk 9,448'Eagle Ford 9,508'Escondido —Yegua —Wilcox —Olmos —Sparta —Queen City —
✓ 42-283-37640 Y-BAR · CASTLEROCK EF OPERATING LLC
0.0 mi
Anacacho 8,924'Anacacho 9,390'Austin Chalk 9,497'Eagle Ford 9,563'Eagle Ford 9,563'Escondido —Queen City —Yegua —Sparta —Wilcox —Edwards —Buda — +1 more
✓ 42-283-37538 KEYSTONE A · EOG RESOURCES, INC.
0.2 mi
Yegua 773'Sparta 1,352'Queen City 1,540'Wilcox 2,946'Olmos 7,277'Austin Chalk 9,501'Eagle Ford 9,565'Buda —Escondido —Edwards —
✓ 42-283-37539 KEYSTONE B · EOG RESOURCES, INC.
0.2 mi
Yegua 784'Sparta 1,363'Olmos 7,288'Anacacho 8,945'Austin Chalk 9,519'Eagle Ford 9,587'Buda —Pearsall —Escondido —Edwards —
✓ 42-283-37540 KEYSTONE C · EOG RESOURCES, INC.
0.3 mi
Yegua 852'Sparta 1,431'Queen City 1,619'Wilcox 3,025'Carrizo 3,026'Olmos 7,352'Pearsall —Buda —Escondido —Edwards —
✓ 42-283-37541 KEYSTONE D · EOG RESOURCES, INC.
0.3 mi
Yegua 868'Sparta 1,447'Queen City 1,635'Wilcox 3,041'Olmos 7,370'Austin Chalk 9,581'Eagle Ford 9,645'Escondido —Buda —Edwards —
✓ 42-283-37528 BRECKENRIDGE D · EOG RESOURCES, INC.
0.4 mi
Yegua 478'Sparta 1,259'Queen City 1,442'Wilcox 2,924'Olmos 7,309'Austin Chalk 9,450'Eagle Ford 9,536'Escondido —Buda —Edwards —

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).

Casing (2)

SizeSet DepthCement
9.625"3,955 ft970 sx
5.5"22,623 ft3,560 sx

Permit History (1)

#898260 Drill Unperfed Completion

Y-BAR · 10,000 ft

2024-03-20

Spud 2024-04-05

Applications (1)

#898260 A CASTLEROCK EF OPERATING LLC
received 2024-03-19

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2024-12-05 log on file
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.

Google Maps → Explorer Map →
Lat 28.514991
Lon -98.807952

Well Details

Well Number
120H
Max Depth
10,000 ft
Drill Type
Horizontal
County
LA SALLE
District
1
Operator
CASTLEROCK EF OPERATING LLC
Completed
2024-04-25

Operator

Location
SAN ANTONIO
P-5 Status
X (filed 2026-01-28)
Cum Oil (all leases)
3,530,048 bbl
Cum Gas (all leases)
— mcf
Activities
OPRS/O
Total Permits
34