42-131-36390

Final Completion

SANTERRA

DUVAL County · District 4 · RATTLESNAKE OPERATING CO LLC · LOPEZ NORTH (LOPEZ)

Permits

Max Depth

2,400 ft

First Permit

1983-12-23

Latest Activity

2013-09-26

Lifespan

30 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2013-10-08

Shut-In

—

Plugged

2019-08-14

EWA / Permit operator mismatch

Scheduling: RATTLESNAKE OPERATING CO LLC ≠ Permit: SANCHEZ OIL & GAS CORPORATION

Resolved via: production → RATTLESNAKE OPERATING CO, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Plugged 2019-08-26 UIC #000108162 permitted 2013-09-25

Permitted Volume

5,000 bbl/d

Max Pressure

1,000 psi

Injection Interval

2,126–2,154 ft

Injected (12mo)

—

Monthly injected volume (bbl, from H-10 filings through 2019-10-01)

Operator History

Chain of Custody

HERSCHAP BROS. 1993-1997→ C AND S OIL & GAS 1997-1998→ MIRANDO RESOURCE, L.L.C. 1998-1999→ SANCHEZ OIL & GAS CORPORATION 2011-2016→ DALLAS PETROLEUM GROUP, LLC 2016-2023→ JALAPENO OPERATING COMPANY, LLC 2024-2025→ RATTLESNAKE OPERATING CO, LLC 2025-2026

Lease Production

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

Formation Tops (2) Elevation 552 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
FIRST MIRANDO	2,126 ft	-1,574 ft
FIRST MIRANDO	2,127 ft	-1,575 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)

Interval	Type
2,126–2,145 ft	Perforated
2,127–2,130 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	370 ft	342 sx
5.5"	2,190 ft	320 sx

Permit History (2)

#770624 Recompletion Final Completion

PETERS ESTATE · 2,400 ft

2013-09-26

Spud 1984-09-01

#224587 Drill Final Completion

PETERS ESTATE · 2,400 ft

1983-12-23

Spud 1984-09-01

Applications (2)

#770624 A SANCHEZ OIL & GAS CORPORATION

received 2013-09-25

#224587 A TESORO PETROLEUM CORPORATION

received 1983-12-23

Records & Logs

3 completion filings on record.

W-2/G-1 2013-11-07

W-2/G-1 1984-10-12

W-2/G-1 1984-11-02

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 DUVAL County.

Well Details

Well Number: 1
Max Depth: 2,400 ft
Drill Type: Vertical
County: DUVAL
District: 4
Operator: RATTLESNAKE OPERATING CO LLC
Completed: 2013-10-08

Operator

Name: RATTLESNAKE OPER CO, LLC
Location: PLNTERSVILL
P-5 Status: Active (filed 2025-07-16)
Cum Oil (all leases): 55,308 bbl
Cum Gas (all leases): 300,932 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 2