42-177-34503

PRODUCING Horizontal

BILSKY-BILSKY-CHUMCHAL SA

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

Permits

2

Max Depth

24,000 ft

First Permit

2022-05-19

Latest Activity

2022-05-19

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-03-29

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 (8) Elevation 339 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REKLAW 3,697 ft-3,358 ft
CARRIZO 4,594 ft-4,255 ft
WILCOX - DISPOSAL (Wilcox)5,685 ft-5,346 ft
AUSTIN CHALK - H2S (Austin Chalk)11,063 ft-10,724 ft
EAGLE FORD - H2S (Eagle Ford)11,677 ft-11,338 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
42-177-34501 BILSKY-CHUMCHAL SA2 · MARATHON OIL EF LLC
0.0 mi
Cook Mountain 2,464'Queen City 3,509'Reklaw 3,711'Carrizo 4,566'Wilcox 5,665'Midway 8,787'Olmos 9,939'Austin Chalk 11,064'Eagle Ford 11,692'Buda Edwards Navarro
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'Buda Navarro Edwards
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'Eagle Ford Reklaw Navarro Carrizo Edwards +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
0.4 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
0.4 mi
Reklaw 3,967'Wilcox 4,527'Austin Chalk 11,003'Eagle Ford 11,609'Buda Edwards 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 (2)

IntervalType
12,182–19,282 ftPerforated
12,198–19,281 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,103 ft694 sx
9.625"9,104 ft1,731 sx
6"19,281 ft3,411 sx

Permit History (2)

Applications (2)

#880039 A MARATHON OIL EF LLC
received 2022-08-20
#880039 A MARATHON OIL EF LLC
received 2022-05-11

Records & Logs

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

W-2/G-1 2023-04-13 log on file
W-2/G-1 2023-02-14 log on file
W-2/G-1 2022-11-11 log on file
W-2/G-1 2022-09-22 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 29.415192
Lon -97.254639

Well Details

Well Number
1H
Max Depth
24,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Completed
2023-03-29

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