42-211-35475

PRODUCING Horizontal

FILLINGIM 88

HEMPHILL County · District 10 · UNBRIDLED RESOURCES LLC · BUFFALO WALLOW (GRANITE WASH)

Permits

2

Max Depth

16,300 ft

First Permit

2015-02-10

Latest Activity

2015-02-10

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2015-11-19

Shut-In

—

Plugged

—

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: UNBRIDLED RESOURCES LLC ≠ Permit: ENERVEST OPERATING, L.L.C.

Resolved via: production → UNBRIDLED RESOURCES, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2015-11

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 2,644 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
TOPEKA5,830 ft-3,186 ft
BROWNSVILLE6,080 ft-3,436 ft
PENNSYLVANIAN SAND (Pennsylvanian)7,120 ft-4,476 ft
BROWN DOLOMITE - PROD, PRESSURED (Brown Dolomite)8,037 ft-5,393 ft
DOUGLAS 8,312 ft-5,668 ft
TONKAWA 8,848 ft-6,204 ft
KANSAS CITY (HOGSHOOTER) (Kansas City)9,789 ft-7,145 ft
OSWEGO UPPER (Oswego)9,930 ft-7,286 ft
CLEVELAND 9,939 ft-7,295 ft
PENNSYLVANIAN (MARMATON) (Pennsylvanian)10,707 ft-8,063 ft

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 ↗

Perforations (1)

IntervalType
11,439–15,615 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"610 ft340 sx
7"11,352 ft820 sx

Permit History (2)

Applications (2)

#803482 A ENERVEST OPERATING, L.L.C.
received 2015-03-17
#803482 A ENERVEST OPERATING, L.L.C.
received 2015-02-03

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2016-01-04 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.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in HEMPHILL County.

Well Details

Well Number
18H
Max Depth
16,300 ft
Drill Type
Horizontal
County
HEMPHILL
District
10
Completed
2015-11-19

Operator

Location
OKLAHOMA CI, TY
P-5 Status
Active (filed 2025-12-17)
Cum Oil (all leases)
2,156,940 bbl
Cum Gas (all leases)
150,390,040 mcf
Activities
OPRS/G, OPRS/O
Total Permits
6