42-427-34751

Final Completion Directional

MONTALVO B UNIT

STARR County · District 4 · KILLAM OIL CO. LTD. · SUN NORTH (RINCON 7490)

Permits

Max Depth

9,000 ft

First Permit

2017-05-25

Latest Activity

2017-12-14

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2017-07-05

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2017-07

Last Production

2026-07

Lease Production

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

Formation Tops (9) Elevation 326 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
MIOCENE-LAGARTO-OAKVILLE - INJEC (Miocene (undifferentiated))	1,400 ft	-1,074 ft
CATAHOULA-ANAHUAC - INJECTION/DI (Catahoula)	3,660 ft	-3,334 ft
CATAHOULA-FRIO - INJECTION/DISPO (Catahoula)	5,600 ft	-5,274 ft
VICKSBURG - INJECTION/DISPOSAL; (Vicksburg)	8,229 ft	-7,903 ft
COOK MOUNTAIN	—	—
JACKSON - INJECTION/DISPOSAL (Jackson)	—	—
QUEEN CITY - INJECTION/DISPOSAL (Queen City)	—	—
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

✓ 42-427-34737 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

0.4 mi

Catahoula 1,380'Catahoula 3,540'Vicksburg 5,679'Wilcox —Yegua —Queen City —Miocene (undifferentiated) —Cook Mountain —Jackson —

✓ 42-427-34747 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

0.5 mi

Catahoula 1,275'Catahoula 1,275'Catahoula 3,492'Catahoula 3,492'Vicksburg 5,750'Vicksburg 5,750'Jackson —Wilcox —Yegua —Miocene (undifferentiated) —Miocene (undifferentiated) —Cook Mountain — +1 more

✓ 42-427-34739 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

0.6 mi

Catahoula 1,395'Catahoula 1,395'Catahoula 3,560'Catahoula 3,560'Catahoula 3,560'Vicksburg 5,760'Vicksburg 5,760'Miocene (undifferentiated) —Miocene (undifferentiated) —Cook Mountain —Jackson —Wilcox — +2 more

✓ 42-427-34767 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

0.8 mi

Catahoula 1,270'Catahoula 3,451'Vicksburg 5,865'Cook Mountain —Queen City —Jackson —Wilcox —Yegua —Miocene (undifferentiated) —

✓ 42-427-34742 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

0.9 mi

Catahoula 1,300'Catahoula 1,300'Catahoula 3,662'Catahoula 3,662'Vicksburg 5,820'Vicksburg 5,820'Queen City —Cook Mountain —Jackson —Wilcox —Yegua —Miocene (undifferentiated) —

✓ 42-427-34766 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

1.0 mi

Catahoula 1,314'Catahoula 3,521'Vicksburg 5,780'Wilcox —Queen City —Miocene (undifferentiated) —Cook Mountain —Jackson —Yegua —

✓ 42-427-34736 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

1.1 mi

Catahoula 1,310'Catahoula 1,310'Catahoula 1,310'Frio 3,670'Catahoula 3,670'Catahoula 3,670'Vicksburg 5,680'Vicksburg 5,680'Vicksburg 5,680'Cook Mountain —Miocene (undifferentiated) —Miocene (undifferentiated) — +4 more

✓ 42-427-34743 I.V. MONTALVO 'C' · KILLAM OIL CO., LTD.

1.1 mi

Catahoula 1,328'Catahoula 1,328'Catahoula 3,496'Catahoula 3,496'Vicksburg 5,762'Vicksburg 5,762'Queen City —Jackson —Miocene (undifferentiated) —Cook Mountain —Wilcox —Miocene (undifferentiated) — +1 more

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 (6)

Interval	Type
6,402–6,405 ft	Perforated
6,405–6,414 ft	Perforated
6,443–6,445 ft	Perforated
7,942–7,946 ft	Perforated
7,952–7,962 ft	Perforated
8,141–8,147 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	1,146 ft	440 sx
4.5"	8,200 ft	910 sx

Permit History (2)

#834000 Recompletion Final Completion

MONTALVO 'B' UNIT · 7,830 ft

2017-12-14

#826797 Drill Final Completion

MONTALVO 'B' UNIT · 9,000 ft

2017-05-25

Spud 2017-06-04

Applications (2)

#834000 A KILLAM OIL CO., LTD.

received 2017-12-07

#826797 A KILLAM OIL CO., LTD.

received 2017-05-16

Records & Logs

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

W-2/G-1 2019-05-16

W-2/G-1 2018-01-22

W-2/G-1 2017-10-05 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 26.690847

Lon -98.475776

Well Details

Well Number: 1
Max Depth: 9,000 ft
Drill Type: Directional
County: STARR
District: 4
Operator: KILLAM OIL CO. LTD.
Completed: 2017-07-05

Operator

Name: KILLAM OIL CO., LTD
Location: LAREDO
P-5 Status: Active (filed 2026-04-09)
Cum Oil (all leases): 8,614,650 bbl
Cum Gas (all leases): 564,764,653 mcf
Activities: CSGD/P, G/PUR, OPRS/G, OPRS/O
Total Permits: 832