42-177-34388

PRODUCING Horizontal

BILSKY UNIT

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

Permits

1

Max Depth

24,000 ft

First Permit

2021-04-15

Latest Activity

2021-04-15

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-05-03

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2012-01

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 305 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REKLAW 3,967 ft-3,662 ft
WILCOX - DISPOSAL (Wilcox)4,527 ft-4,222 ft
AUSTIN CHALK - H2S (Austin Chalk)11,003 ft-10,698 ft
EAGLE FORD - H2S (Eagle Ford)11,609 ft-11,304 ft
BUDA - H2S, DISPOSAL (Buda)
CARRIZO
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
42-177-34389 BILSKY UNIT · MARATHON OIL EF LLC
0.0 mi
Reklaw 3,967'Wilcox 4,527'Austin Chalk 10,985'Eagle Ford 11,597'Carrizo Edwards Buda Navarro
42-177-34387 BILSKY UNIT · MARATHON OIL EF LLC
0.0 mi
Reklaw 3,967'Wilcox 4,527'Austin Chalk 10,995'Eagle Ford 11,619'Navarro Carrizo Edwards Buda
42-177-34256 NICHOLS UNIT · EOG RESOURCES, INC.
0.3 mi
Reklaw 4,271'Wilcox 4,502'Carrizo 4,657'Navarro 9,513'Anacacho 10,847'Austin Chalk 11,192'Eagle Ford 11,732'Reklaw Wilcox Edwards Eagle Ford Navarro +3 more
42-177-34257 ANTARCTIC A · EOG RESOURCES, INC.
0.3 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
42-177-34255 NICHOLS UNIT · EOG RESOURCES, INC.
0.3 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
42-177-34503 BILSKY-BILSKY-CHUMCHAL SA · MARATHON OIL EF LLC
0.4 mi
Reklaw 3,697'Carrizo 4,594'Wilcox 5,685'Austin Chalk 11,063'Eagle Ford 11,677'Navarro Buda Edwards
42-177-34500 BILSKY-CHUMCHAL SA1 · MARATHON OIL EF LLC
0.5 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 Edwards Navarro
42-177-34501 BILSKY-CHUMCHAL SA2 · MARATHON OIL EF LLC
0.5 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

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
11,909–16,696 ftPerforated
17,201–18,621 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"4,905 ft1,460 sx
5.5"18,678 ft2,968 sx

Permit History (1)

Applications (1)

#868881 A MARATHON OIL EF LLC
received 2021-04-05

Records & Logs

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

W-2/G-1 2023-07-19 log on file
W-2/G-1 2022-02-17
W-2/G-1 2021-12-30
W-2/G-1 2021-10-08
W-2/G-1 2021-08-19 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 29.413703
Lon -97.261874

Well Details

Well Number
3H
Max Depth
24,000 ft
Drill Type
Horizontal
County
GONZALES
District
1
Completed
2023-05-03

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