42-163-34339

PRODUCING Horizontal

DARLENE 1-STX

FRIO County · District 1 · FORMENTERA OPERATIONS LLC · INDIO TANKS (PEARSALL)

Permits

3

Max Depth

10,800 ft

First Permit

2024-06-28

Latest Activity

2024-06-28

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2025-01-27

Shut-In

Plugged

P-5 Org Status: X

!

EWA / Permit operator mismatch

Scheduling: FORMENTERA OPERATIONS LLC ≠ Permit: BRITANCO, L.L.C.

Resolved via: productionFORMENTERA OPERATIONS LLC

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2024-08

Last Production

2026-07

Operator History

originally filed by BRITANCO, L.L.C. — asset transferred

Lease Production

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

Formation Tops (26) Elevation 636 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
WILCOX 1,016 ft-380 ft
MIDWAY 3,467 ft-2,831 ft
ESCONDIDO 3,729 ft-3,093 ft
NAVARRO 4,045 ft-3,409 ft
OLMOS 4,860 ft-4,224 ft
SAN MIGUEL 5,261 ft-4,625 ft
ACHO UNC5,743 ft-5,107 ft
ANACACHO 6,106 ft-5,470 ft
AUSTIN CHALK - H2S (Austin Chalk)6,497 ft-5,861 ft
EAGLE FORD 6,871 ft-6,235 ft
EAGLE FORD - H2S (Eagle Ford)6,871 ft-6,235 ft
BUDA 7,018 ft-6,382 ft
BUDA - H2S (Buda)7,018 ft-6,382 ft
DEL RIO 7,127 ft-6,491 ft
GEORGETOWN 7,206 ft-6,570 ft
GEORGETOWN - H2S (Georgetown)7,206 ft-6,570 ft
EDWARDS 7,636 ft-7,000 ft
GLEN ROSE 8,095 ft-7,459 ft
PEARSALL 9,893 ft-9,257 ft
PEARSALL 9,900 ft-9,264 ft
BEXAR10,012 ft-9,376 ft
MIDDLE BEXAR10,103 ft-9,467 ft
LOWER BEXAR10,195 ft-9,559 ft
COW CREEK10,365 ft-9,729 ft
PINE ISLAND10,439 ft-9,803 ft
QUEEN CITY

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
42-163-34342 HURRIKAIN CAT I-STX · FORMENTERA OPERATIONS LLC
0.0 mi
Wilcox 1,046'Midway 3,579'Escondido 3,732'Navarro 4,039'Olmos 4,843'San Miguel 5,264'Anacacho 6,095'Austin Chalk 6,452'Eagle Ford 6,814'Buda 6,945'
42-163-34346 MELLO 308-STX · FORMENTERA OPERATIONS LLC
0.9 mi
Wilcox 1,330'Midway 3,510'Escondido 3,785'Navarro 3,940'Olmos 4,815'Eagle Ford Anacacho Buda Queen City Austin Chalk
42-163-34380 WRANGLER-STX-UNIT · FORMENTERA OPERATIONS LLC
2.4 mi
Wilcox 1,410'Midway 3,240'Escondido 3,652'Navarro 3,815'Olmos 4,650'San Miguel 5,163'Anacacho 5,790'Austin Chalk 6,096'Eagle Ford 6,484'Queen City
42-163-34381 WRANGLER-STX-UNIT · FORMENTERA OPERATIONS LLC
2.5 mi
Wilcox 1,410'Midway 3,245'Escondido 3,647'Navarro 3,817'Olmos 4,656'San Miguel 5,176'Anacacho 5,804'Austin Chalk 6,111'Eagle Ford 6,510'Queen City
42-163-34382 WRANGLER-STX-UNIT · FORMENTERA OPERATIONS LLC
2.5 mi
Escondido 3,655'Navarro 3,825'Olmos 4,667'Anacacho 5,821'Austin Chalk 6,140'Buda 6,647'Eagle Ford 6,758'Georgetown 6,834'Pearsall 9,496'Queen City
42-163-34388 REVIVAL-STX-UNIT-A · FORMENTERA OPERATIONS LLC
2.5 mi
Wilcox 1,366'Midway 3,193'Escondido 3,603'Navarro 3,768'San Miguel 5,106'Del Rio 6,664'Edwards 7,191'Glen Rose 7,785'Glen Rose 8,353'Queen City
42-163-34387 REVIVAL-STX-UNIT-A · FORMENTERA OPERATIONS LLC
2.5 mi
Escondido 3,601'Navarro 3,751'Olmos 4,592'Anacacho 5,727'Austin Chalk 6,034'Eagle Ford 6,418'Buda 6,546'Georgetown 6,734'Pearsall 9,340'Queen City
42-163-34389 REVIVAL-STX-UNIT-B · FORMENTERA OPERATIONS LLC
2.5 mi
Wilcox 1,366'Midway 3,193'Escondido 3,603'Navarro 3,764'San Miguel 5,106'Del Rio 6,652'Edwards 7,155'Glen Rose 7,763'Glen Rose 8,317'Queen City

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 (1)

IntervalType
10,656–19,876 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"3,577 ft2,240 sx
9.625"9,807 ft670 sx
5.5"19,858 ft3,115 sx

Permit History (3)

Applications (3)

#900824 A FORMENTERA OPERATIONS LLC
received 2024-10-12
#900824 A BRITANCO, L.L.C.
received 2024-08-21
#900824 A BRITANCO, L.L.C.
received 2024-06-25

Records & Logs

4 completion filings on record · 2 with log images at RRC.

W-2/G-1 2025-11-17
W-2/G-1 2025-04-16 log on file
W-2/G-1 2024-10-11
W-2/G-1 2024-08-14 log on file

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.

Lat 28.788888
Lon -99.003519

Well Details

Well Number
N731HP
Max Depth
10,800 ft
Drill Type
Horizontal
County
FRIO
District
1
Completed
2025-01-27

Operator

Location
AUSTIN
P-5 Status
X (filed 2026-06-11)
Cum Oil (all leases)
7,170,117 bbl
Cum Gas (all leases)
53,235,974 mcf
Activities
CSGD/P, G/PUR, OPRS/G, OPRS/O
Total Permits
80