42-177-34501

PRODUCING Horizontal

BILSKY-CHUMCHAL SA2

GONZALES County · District 1 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-1)

Permits

1

Max Depth

24,000 ft

First Permit

2022-05-18

Latest Activity

2022-05-18

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-03-24

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2022-08

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 (12) Elevation 341 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
COOK MOUNTAIN 2,464 ft-2,123 ft
QUEEN CITY 3,509 ft-3,168 ft
REKLAW 3,711 ft-3,370 ft
CARRIZO 4,566 ft-4,225 ft
WILCOX - DISPOSAL (Wilcox)5,665 ft-5,324 ft
MIDWAY 8,787 ft-8,446 ft
OLMOS 9,939 ft-9,598 ft
AUSTIN CHALK - H2S (Austin Chalk)11,064 ft-10,723 ft
EAGLE FORD - H2S (Eagle Ford)11,692 ft-11,351 ft
BUDA - H2S, DISPOSAL (Buda)
EDWARDS - H2S (Edwards)
NAVARRO

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
42-177-34500 BILSKY-CHUMCHAL SA1 · MARATHON OIL EF LLC
0.0 mi
Cook Mountain 2,459'Reklaw 3,687'Carrizo 4,582'Wilcox 5,654'Olmos 9,939'Austin Chalk 11,068'Eagle Ford 11,682'Buda Navarro Edwards
42-177-34502 BILSKY-CHUMCHAL SA3 · MARATHON OIL EF LLC
0.0 mi
Cook Mountain 2,467'Sparta 3,207'Reklaw 3,678'Carrizo 4,524'Wilcox 5,580'Eagle Ford 11,698'Austin Chalk 11,806'Navarro Edwards Buda
42-177-34503 BILSKY-BILSKY-CHUMCHAL SA · MARATHON OIL EF LLC
0.0 mi
Reklaw 3,697'Carrizo 4,594'Wilcox 5,685'Austin Chalk 11,063'Eagle Ford 11,677'Edwards Navarro Buda
42-177-34255 NICHOLS UNIT · EOG RESOURCES, INC.
0.4 mi
Reklaw 4,188'Wilcox 4,525'Carrizo 4,677'Navarro 9,540'Anacacho 10,860'Austin Chalk 11,218'Eagle Ford 11,752'Wilcox Eagle Ford Reklaw Navarro Carrizo +3 more
42-177-34257 ANTARCTIC A · EOG RESOURCES, INC.
0.4 mi
Reklaw 4,272'Wilcox 4,503'Carrizo 4,658'Navarro 9,526'Anacacho 10,904'Austin Chalk 11,214'Eagle Ford 11,764'Buda Edwards
42-177-34256 NICHOLS UNIT · EOG RESOURCES, INC.
0.4 mi
Reklaw 4,271'Wilcox 4,502'Carrizo 4,657'Navarro 9,513'Anacacho 10,847'Austin Chalk 11,192'Eagle Ford 11,732'Carrizo Austin Chalk Navarro Wilcox Edwards +3 more
42-177-34387 BILSKY UNIT · MARATHON OIL EF LLC
0.5 mi
Reklaw 3,967'Wilcox 4,527'Austin Chalk 10,995'Eagle Ford 11,619'Edwards Buda Carrizo Navarro
42-177-34388 BILSKY UNIT · MARATHON OIL EF LLC
0.5 mi
Reklaw 3,967'Wilcox 4,527'Austin Chalk 11,003'Eagle Ford 11,609'Edwards Buda Carrizo Navarro

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
12,090–19,520 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,115 ft742 sx
9.625"9,123 ft1,771 sx
6"19,520 ft3,469 sx

Permit History (1)

Applications (1)

#880037 A MARATHON OIL EF LLC
received 2022-05-11

Records & Logs

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

W-2/G-1 2023-04-13 log on file
W-2/G-1 2023-02-08
W-2/G-1 2022-11-11 log on file
W-2/G-1 2022-09-09 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 29.415209
Lon -97.254486

Well Details

Well Number
2H
Max Depth
24,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Completed
2023-03-24

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-09-26)
Cum Oil (all leases)
409,189,156 bbl
Cum Gas (all leases)
1,029,735,602 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
3,173