WELL · 42-211-20081 · DISTRICT 10

Hefley #A190

Hefley #A190 (API 42-211-20081) is a permitted well in Hemphill County filed by Vastar Resources, Inc.; no completion report is on file yet.

The RRC has issued one drilling permit, issued September 2, 1999, permitted to 19,940 ft.

Completion filings report 4 formation tops, including Brown Dolomite, Tonkawa, Chester, Hunton.

Operator of record

Vastar Resources, Inc.

Houston, TX · P-5 Y, filed Sep 3, 2004 · 328 permits on file

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	Vastar Resources, Inc.through May 1998
Latest permit	Vastar Resources, Inc.Sep 2, 1999

19,940: total depth, ft
1: permits on file
Sep 2, 1999: last permit issued
—: completed
0: cumulative oil, bbl
197K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jan 2015

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: —
Shut in: —
Plugged: —

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
Hefley G-14-45541	Buffalo Wallow (Hunton 19600)	BP America Production Company	1	0	197K	Jan 1993 – Jan 2015

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.

1Union Oil Company of CaliforniaJan 1993 → Sep 1997
2Vastar Resources, Inc.Oct 1997 → May 1998

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
487231-99	Recompletion	Vastar Resources, Inc.	Sep 2, 1999	Sep 2, 1999	—	19,940

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-14-45541	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 2,569 ft elevation.Download CSV →

Formation	MD ft	Subsea
Brown Dolomite	4,396	-1,827
Tonkawa	8,750	-6,181
Chester	16,063	-13,494
Hunton	19,417	-16,848

Perforations

Perforated and open-hole intervals.

From	To	Type
19,418	19,453	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
20	805	24	1,100 S
13.375	6,381	17.5	7,770 S
10.75	13,210	12.25	2,375 S
5	19,939	6.75	725 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. About these reports →

Suffix	Filed	W-2 / G-1 date	Logs referenced
00	Jan 8, 2015	Jun 10, 2014	—
00	Jan 12, 1984	Sep 9, 1968	—

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 42-211-20081 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-211-20081 → scanned completion filings

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.

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/21120081, documented in the API reference.