42-173-31215

Final Completion

BLALOCK LOIS

GLASSCOCK County · District 8 · ROYALTY LAND & DEV. CO. INC. · SPRABERRY (TREND AREA)

Permits

Max Depth

11,700 ft

First Permit

1981-09-17

Latest Activity

2017-05-26

Lifespan

36 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2018-03-22

Shut-In

—

Plugged

2024-10-14

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

SNYDER OIL CORPORATION 1993-1995→ CODA ENERGY, INC. 1995-1996→ ROYALTY LAND & DEV. CO., INC. 1996-2026

Lease Production

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

Formation Tops (15) Elevation 2,554 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SANTA ROSA	1,265 ft	+1,289 ft
YATES	2,002 ft	+552 ft
SEVEN RIVERS	2,410 ft	+144 ft
QUEEN	2,780 ft	-226 ft
GRAYBURG	3,209 ft	-655 ft
SAN ANDRES	3,500 ft	-946 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)	3,523 ft	-969 ft
GLORIETA	4,451 ft	-1,897 ft
CLEARFORK (Clear Fork)	5,646 ft	-3,092 ft
CLEARFORK (Clear Fork)	5,800 ft	-3,246 ft
CLEARFORK (Clear Fork)	5,803 ft	-3,249 ft
WICHITA ALBANY (Wichita-Albany)	6,220 ft	-3,666 ft
WICHITA ALBANY (Wichita-Albany)	6,269 ft	-3,715 ft
SPRABERRY	6,520 ft	-3,966 ft
WOLFCAMP	8,302 ft	-5,748 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 (3)

Interval	Type
7,656–7,771 ft	Perforated
8,310–8,400 ft	Perforated
10,962–10,984 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	356 ft	350 sx
10.75"	4,500 ft	305 sx
2.875"	10,838 ft	—
5.5"	11,100 ft	850 sx
5.5"	11,100 ft	850 sx

Permit History (4)

#826473 Recompletion Final Completion

LOIS BLALOCK · 11,100 ft

2017-05-26

Spud 2017-06-01

#782158 Field Transfer Final Completion

LOIS BLALOCK · 11,100 ft

2014-04-21

Spud 2014-03-07

#305022 Recompletion Final Completion

BLALOCK, LOIS · 11,100 ft

1986-08-07

#134773 Drill Final Completion

BLALOCK, LOIS · 11,700 ft

1981-09-17

Spud 1981-09-18

Applications (4)

#826473 A ROYALTY LAND & DEV. CO., INC.

received 2017-05-09

#782158 A ROYALTY LAND & DEV. CO., INC.

received 2014-03-13

#305022 A TERRA RESOURCES, INC.

received 1986-08-07

#134773 A DAVIS OIL COMPANY

received 1981-09-17

Records & Logs

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

W-2/G-1 2018-04-12

W-2/G-1 2017-04-18

W-2/G-1 2014-05-20 log on file

W-2/G-1 1986-09-23 log on file

W-2/G-1 1986-09-30

W-2/G-1 1982-03-01

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.

No GPS coordinates yet

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

Well Details

Well Number: 2
Max Depth: 11,700 ft
Drill Type: Vertical
County: GLASSCOCK
District: 8
Operator: ROYALTY LAND & DEV. CO. INC.
Completed: 2018-03-22

Operator

Name: ROYALTY LAND & DEV. CO., INC
Location: WOLFFORTH
P-5 Status: Active (filed 2025-12-23)
Cum Oil (all leases): 662,038 bbl
Cum Gas (all leases): 976,717 mcf
Activities: OPRS/O
Total Permits: 32