← Wells

42-227-39903

INJECTION

CHALK G. O.

HOWARD County · District 8 · GRAYROCK ENERGY II LLC · HOWARD GLASSCOCK (CONSOLIDATED)

Permits

1

Max Depth

4,300 ft

First Permit

2018-12-07

Latest Activity

2018-12-07

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2018-12-16

Shut-In

—

Plugged

—

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: GRAYROCK ENERGY II LLC ≠ Permit: ROVER PETROLEUM OPERATING, LLC

Resolved via: production → GRAYROCK ENERGY II, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2011-12

Last Production

2026-07

Injection / Disposal

HOWARD County disposal market →
H-1 Injection Active UIC #000118002 permitted 2019-03-14

Permitted Volume

2,500 bbl/d

Max Pressure

1,500 psi

Injection Interval

3,000–3,900 ft

Injected (12mo)

500,705 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-12-01)

Seismicity: 14 earthquakes M2+ within 10 km in the last 24 months (max M2.6) · TexNet catalog

Operator History

Chain of Custody

CIMAREX ENERGY CO. OF COLORADO 2011-2012→ MERIT ENERGY COMPANY 2013-2017→ ROVER PETROLEUM OPERATING, LLC 2017-2023→ GRAYROCK ENERGY II, LLC 2024-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil
production & DCA →

Formation Tops (10) Elevation 2,456 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 1,233 ft+1,223 ft
SEVEN RIVERS 1,320 ft+1,136 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)2,100 ft+356 ft
GLORIETA 2,691 ft-235 ft
CLEARFORK - SEVERE WATER FLOWS (Clear Fork)2,942 ft-486 ft
COLEMAN JUNCTION ——
DEAN ——
LEONARD ——
SPRABERRY ——
WOLFCAMP ——

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
✓ 42-227-39679 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.1 mi
Spraberry —Leonard —Pennsylvanian —Atoka —Wolfcamp —Cisco —Dean —Strawn —Mississippian —Canyon —
✓ 42-227-39867 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.1 mi
Seven Rivers 1,301'San Andres 2,062'Glorieta 2,650'Clear Fork 2,929'Cisco —Dean —Coleman Junction —Wolfcamp —Leonard —Spraberry —
✓ 42-227-39678 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.2 mi
Yates 1,168'Seven Rivers 1,254'San Andres 2,052'Glorieta 2,634'Clear Fork 2,902'Wolfcamp —Dean —Coleman Junction —Leonard —Spraberry —
✓ 42-227-39674 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.2 mi
Ellenburger —Leonard —Pennsylvanian —Atoka —Wolfcamp —Cisco —Dean —Strawn —Mississippian —Canyon —
✓ 42-227-39813 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.2 mi
Yates 1,255'Seven Rivers 1,346'San Andres 2,137'Glorieta 2,727'Clear Fork 2,976'Wolfcamp —Dean —Coleman Junction —Leonard —Spraberry —
✓ 42-227-39777 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.2 mi
Yates 1,256'Seven Rivers 1,340'San Andres 2,108'Glorieta 2,702'Clear Fork 2,957'Wolfcamp —Dean —Coleman Junction —Leonard —Spraberry —
✓ 42-227-39812 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.2 mi
Seven Rivers 1,370'San Andres 2,113'Glorieta 2,742'Clear Fork 3,524'Coleman Junction —Wolfcamp —Dean —Leonard —Yates —Spraberry —
✓ 42-227-39846 CHALK, G. O. · ROVER PETROLEUM OPERATING, LLC
0.3 mi
Yates 1,263'Seven Rivers 1,350'San Andres 2,122'Glorieta 2,718'Clear Fork 2,970'Wolfcamp —Dean —Coleman Junction —Spraberry —Leonard —

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
3,159–3,695 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"987 ft470 sx
5.5"4,230 ft620 sx

Permit History (1)

#847600 Drill Final Completion

CHALK, G. O. · 4,300 ft

2018-12-07

Spud 2018-12-10

Applications (1)

#847600 A ROVER PETROLEUM OPERATING, LLC
received 2018-12-07

Records & Logs

2 completion filings on record.

W-2/G-1 2019-07-25
W-2/G-1 2019-03-14
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 32.125069
Lon -101.245583

Well Details

Well Number
56CF
Max Depth
4,300 ft
Drill Type
Vertical
County
HOWARD
District
8
Operator
GRAYROCK ENERGY II LLC
Completed
2018-12-16

Operator

Location
FORT WORTH
P-5 Status
Active (filed 2025-10-16)
Cum Oil (all leases)
1,537,532 bbl
Cum Gas (all leases)
35,084 mcf
Activities
OPRS/G, OPRS/O