42-173-00816

Final Completion

BIGBY W. A. B

GLASSCOCK County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA CL. FK.)

Permits

Max Depth

8,480 ft

First Permit

1978-05-30

Latest Activity

1985-04-10

Lifespan

7 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-04-02

Shut-In

—

Plugged

2022-02-11

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: SOHIO PETROLEUM CO.

Resolved via: scheduling → PIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2022-03

Operator History

Chain of Custody

PG&E RESOURCES COMPANY 1993-1994→ MIDPAR L.P. 1994-1995→ PARKER & PARSLEY DEVELOPMENT L.P 1995-1997→ PIONEER NATURAL RES. USA, INC. 1997-2019

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 (3) Elevation 2,710 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,636 ft	-4,926 ft
DEAN	8,153 ft	-5,443 ft
WOLFCAMP	8,341 ft	-5,631 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 (5)

Interval	Type
6,202–6,211 ft	Perforated
6,202–6,379 ft	Perforated
6,374–6,380 ft	Perforated
8,209–8,379 ft	Perforated
8,209–8,422 ft	Perforated

Casing (6)

Size	Set Depth	Cement
10.75"	334 ft	250 sx
10.75"	334 ft	250 sx
2.375"	4,960 ft	—
2.375"	6,684 ft	—
5.5"	7,636 ft	325 sx
5.5"	7,636 ft	325 sx

Permit History (3)

#271760 Recompletion Final Completion

BIGBY, W. A. "B" · 8,468 ft

1985-04-10

#59786 Recompletion Final Completion

BIGBY, W. A. "B" · 8,480 ft

1979-10-04

#25439 Recompletion

BIGBY, W. A. "B" · 8,480 ft

1978-05-30

Spud 1978-06-10

Applications (3)

#271760 A SOHIO PETROLEUM CO.

received 1985-04-01

#59786 A SOHIO NATURAL RESOURCES CO.

received 1979-10-04

#25439 A SOHIO PETROLEUM CO.

received 1978-05-30

Records & Logs

4 completion filings on record.

W-2/G-1 1991-05-28

W-2/G-1 1985-06-04

W-2/G-1 1979-10-25

W-2/G-1 1978-07-14

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.

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: 4
Max Depth: 8,480 ft
Drill Type: Vertical
County: GLASSCOCK
District: 7
Operator: PIONEER NATURAL RES. USA INC.
Completed: 1991-04-02

Operator

Name: PIONEER NATURAL RES. USA, INC
Location: Y SPRING
P-5 Status: Active (filed 2025-08-01)
Cum Oil (all leases): 1,771,882,421 bbl
Cum Gas (all leases): 1,763,727,021 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 15,403