42-013-35503

PRODUCING Horizontal

HENKE-WILHELM UNIT A

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

Permits

1

Max Depth

17,000 ft

First Permit

2017-06-30

Latest Activity

2017-06-30

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2018-09-07

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2012-03

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 (10) Elevation 363 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 3,037 ft-2,674 ft
REKLAW 3,352 ft-2,989 ft
BARTOSH 3,634 ft-3,271 ft
CARRIZO 4,012 ft-3,649 ft
WILCOX - DISPOSAL (Wilcox)5,388 ft-5,025 ft
NAVARRO - H2S (Navarro)8,518 ft-8,155 ft
OLMOS - DISPOSAL (Olmos)9,088 ft-8,725 ft
ANACACHO - H2S (Anacacho)10,582 ft-10,219 ft
AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk)10,777 ft-10,414 ft
ESCONDIDO - H2S, DISPOSAL (Escondido)

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
42-013-35504 HENKE UNIT A · MARATHON OIL EF LLC
0.0 mi
Queen City 3,037'Reklaw 3,352'Bartosh 3,634'Carrizo 4,012'Wilcox 5,388'Navarro 8,518'Olmos 9,088'Anacacho 10,587'Austin Chalk 10,791'Escondido
42-013-35502 HENKE-WILHELM UNIT A · MARATHON OIL EF LLC
0.0 mi
Queen City 3,037'Reklaw 3,352'Bartosh 3,634'Carrizo 4,012'Wilcox 5,388'Navarro 8,518'Olmos 9,088'Anacacho 10,585'Austin Chalk 10,785'Eagle Ford 10,938'Escondido
42-013-35501 HENKE-WILHELM UNIT A · MARATHON OIL EF LLC
0.0 mi
Queen City 3,037'Reklaw 3,352'Bartosh 3,634'Carrizo 4,012'Wilcox 5,388'Navarro 8,518'Olmos 9,088'Anacacho 10,585'Anacacho 10,595'Austin Chalk 10,789'Escondido
42-013-35525 HENKE UNIT B · MARATHON OIL EF LLC
0.2 mi
Queen City 3,025'Reklaw 3,339'Bartosh 3,622'Carrizo 4,000'Wilcox 5,375'Navarro 8,506'Olmos 9,076'Anacacho 10,631'Austin Chalk 10,773'Escondido
42-013-35524 HENKE UNIT B · MARATHON OIL EF LLC
0.2 mi
Queen City 3,025'Reklaw 3,339'Bartosh 3,622'Carrizo 4,000'Wilcox 5,375'Navarro 8,506'Olmos 9,076'Anacacho 10,606'Austin Chalk 10,777'Escondido
42-013-35522 HENKE UNIT B · MARATHON OIL EF LLC
0.2 mi
Queen City 3,025'Reklaw 3,339'Bartosh 3,622'Carrizo 4,000'Wilcox 5,375'Navarro 8,506'Olmos 9,076'Anacacho 10,578'Austin Chalk 10,771'Escondido
42-013-35514 WILHELM-SMITH UNIT B · MARATHON OIL EF LLC
0.7 mi
Queen City 2,865'Reklaw 3,179'Carrizo 3,840'Wilcox 5,215'Navarro 8,346'Olmos 8,916'Anacacho 10,417'Anacacho 10,419'Austin Chalk 10,607'Austin Chalk 10,615'Escondido Bartosh
42-013-35515 WILHELM-SMITH UNIT B · MARATHON OIL EF LLC
0.7 mi
Queen City 2,865'Reklaw 3,179'Carrizo 3,840'Wilcox 5,215'Navarro 8,346'Olmos 8,916'Anacacho 10,419'Austin Chalk 10,615'Escondido Bartosh

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
11,098–15,007 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,217 ft1,549 sx
5.5"15,113 ft2,379 sx

Permit History (1)

Applications (1)

#828144 A MARATHON OIL EF LLC
received 2017-06-23

Records & Logs

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

W-2/G-1 2018-10-08 log on file
W-2/G-1 2018-09-25 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 28.727800
Lon -98.204328

Well Details

Well Number
7H
Max Depth
17,000 ft
Drill Type
Horizontal
County
ATASCOSA
District
1
Completed
2018-09-07

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