← Wells

42-013-35831

Horizontal

RETZLOFF-TOM-MAUCH-TOM SA

ATASCOSA County · District 1 · MARATHON OIL EF LLC

Permits

1

Max Depth

26,000 ft

First Permit

2021-04-01

Latest Activity

2021-04-01

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Formation Tops

No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. The nearest completed wells below show what to expect at this location.

Check this well's filings at RRC ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported — this well has no filings of its own yet.

Cross-section
✓ 42-013-35830 TOM FAMILY-RETZLOFF SA3 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,714'Reklaw 3,294'Carrizo 3,969'Wilcox 4,044'Olmos 9,054'Anacacho 10,449'Austin Chalk 10,612'Bartosh —Escondido —Navarro —
✓ 42-013-35829 TOM FAMILY-RETZLOFF SA2 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,714'Reklaw 3,294'Carrizo 3,696'Carrizo 3,969'Wilcox 4,044'Wilcox 6,844'Olmos 9,054'Anacacho 10,445'Austin Chalk 10,608'Navarro —Escondido —Bartosh —
✓ 42-013-35828 TOM FAMILY-RETZLOFF SA1 · MARATHON OIL EF LLC
0.0 mi
Queen City 2,714'Reklaw 3,294'Carrizo 3,969'Wilcox 4,044'Olmos 9,054'Anacacho 10,450'Austin Chalk 10,610'Bartosh —Navarro —Escondido —
✓ 42-013-34409 RETZLOFF-TOM UNIT · MARATHON OIL EF LLC
0.3 mi
Anacacho 10,500'Austin Chalk 10,660'Austin Chalk 10,660'Eagle Ford 10,787'Eagle Ford 10,870'Eagle Ford 10,870'
✓ 42-013-35978 RETZLOFF MAY-MAUCH KRUEGER SA · MARATHON OIL EF LLC
0.4 mi
Queen City 2,617'Reklaw 3,171'Carrizo 3,985'Wilcox 4,061'Anacacho 10,409'Austin Chalk 10,574'Bartosh —Navarro —Escondido —Olmos —
✓ 42-013-35977 MAUCH TOM KRUEGER-ETHRIDGE SA · MARATHON OIL EF LLC
0.4 mi
Queen City 1,791'Reklaw 3,171'Carrizo 3,895'Wilcox 4,061'Anacacho 10,408'Austin Chalk 10,571'Escondido —Olmos —Bartosh —Navarro —
✓ 42-013-35976 MAUCH TOM KRUEGER SA2 · MARATHON OIL EF LLC
0.4 mi
Queen City 2,617'Reklaw 3,171'Carrizo 3,985'Wilcox 4,061'Anacacho 10,409'Austin Chalk 10,569'Navarro —Escondido —Olmos —Bartosh —
✓ 42-013-35667 RETZLOFF TOM-MAY PSA A · MARATHON OIL EF LLC
1.3 mi
Queen City 3,095'Reklaw 3,457'Bartosh 3,661'Carrizo 4,104'Wilcox 5,439'Navarro 8,777'Olmos 9,287'Anacacho 10,713'Austin Chalk 10,902'Escondido —

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).

Permit History (1)

#868625 Drill

RETZLOFF-TOM-MAUCH-TOM SA · 26,000 ft

2021-04-01

Applications (1)

#868625 A MARATHON OIL EF LLC
received 2021-03-24

Records & Logs

No W-2/G-1 filings on record in the RRC wellbore file for this well.

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.

Google Maps → Explorer Map →
Lat 28.750847
Lon -98.180175

Well Details

Well Number
1H
Max Depth
26,000 ft
Drill Type
Horizontal
County
ATASCOSA
District
1
Operator
MARATHON OIL EF LLC

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
3,166