TEXAS · WELLS · UPTON COUNTY · HALFF ESTATE "B" LEASE · API 42-461-31334 · DISTRICT 6E

Halff Estate B #1

Plugged

Upton County · Old Upland (Bend) field · Vertical

Halff Estate B #1 (API 42-461-31334) is a plugged well in Upton County, plugged May 9, 1996, last operated by Cox John L..

The RRC has issued one drilling permit, issued July 19, 1978, permitted to 10,300 ft.

Its lease has reported 1.28K barrels of oil and 36.7K mcf of gas since January 1993, with no volume in the three years through April 2026.

Operator of record

Cox John L.

Based in: Midland, TX
P-5 status: Inactive (I)
P-5 last filed: Mar 21, 2003
Permits on file: 1,123
Phone: (432) 682-9435

Watch this operator Watch Upton County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Cox John L.
Production reports	Cox, John L.through Oct 1995
Latest permit	Cox, John L.Jul 19, 1978

10,300: total depth, ft
1: permits on file
Jul 19, 1978: last permit issued
Nov 1, 1978: completed
1.28K: cumulative oil, bbl
36.7K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 1995

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Nov 1, 1978
Shut in: —
Plugged: May 9, 1996

Surface location

No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.

Lease production

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Halff Estate "B" O-9-7647	Old Upland (Bend)	Cox, John L.	1	1.28K	36.7K	Jan 1993 – Oct 1995

No volumes reported on these leases in the last three years.

Chain of custody

Every operator that reported production on this well's lease, in order.

1Cox, John L.Jan 1993 → Oct 1995

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
28728-99	Drill	Cox, John L.	Jul 19, 1978	Jul 19, 1978	—	10,300

Completions

Completed	Lease	Field	Operator	Status	Depth
Nov 1, 1978	Halff Estate B O-9-7647	Old Upland (Bend)	Cox John L.	Plugged	—

Perforations

Perforated and open-hole intervals.

From	To	Type
10,165	10,196	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
12.75	445	17	400 S
8.625	4,535	11	400 S
2	8,600	—	—
4.5	10,300	7.875	1,000 S

Completion filings

W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →

Suffix	RRC record date	W-2 / G-1 date	Logs referenced
00	Jan 12, 1984	Aug 7, 1978	—

The source documents

Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.

Wellbore filings for 42-461-31334 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-461-31334 → scanned completion filings

Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its search.

Find logs withinmiles of this well:List →Map →

About this data

Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.

New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease

Developers: this page as JSON is GET /v1/data/wells/46131334, documented in the API reference.