WELL · 42-435-35041 · DISTRICT 7

Richardson 139 #8

Richardson 139 #8 (API 42-435-35041) is a permitted well in Sutton County filed by Highmount Expl & Prod Texas LLC; no completion report is on file yet.

The RRC has issued 2 drilling permits between 1999 and 2013, permitted to 7,600 ft.

Completion filings report 3 formation tops, including Base Cretaceous (marker), Wolfcamp, Canyon.

Operator of record

Highmount Expl & Prod Texas LLC

Houston, TX · P-5 Y, filed Jun 3, 2016 · 1,184 permits on file · (325) 387-3588

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	Upp Operating, LLCthrough Apr 2026
Latest permit	Highmount Expl & Prod Texas LLCOct 29, 2013

7,600: total depth, ft
2: permits on file
Oct 29, 2013: last permit issued
—: completed
0: cumulative oil, bbl
404K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 2000 THROUGH Jul 2026

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
Richardson 139 G-9-176664	Sawyer (Canyon)	Upp Operating, LLC	1	0	404K	Jan 2000 – Jul 2026

Gas, mcf lease total

Last 12 months 2,311 · prior 12 2,393(-3%)

Chain of custody

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

1Dreyfus, Louis Natural Gas CorpJan 2000 → Nov 2001
2Dominion Oklahoma Texas E&P, IncDec 2001 → Dec 2007
3Highmount Expl & Prod Texas LLCJan 2008 → Sep 2014
4Enervest Operating, L.L.C.Oct 2014 → Mar 2019
5Upp Operating, LLCApr 2019 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
771900-99	Recompletion	Highmount Expl & Prod Texas LLC	Oct 16, 2013	Oct 29, 2013	—	6,500
490718-99	Drill	Dreyfus, Louis Natural Gas Corp	Dec 29, 1999	Dec 29, 1999	Jan 7, 2000	7,600

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-9-176664	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 2,265 ft elevation.Download CSV →

Formation	MD ft	Subsea
Base Cretaceous (marker)BASE CRETACEOUS	869	1,396
Wolfcamp	3,516	-1,251
Canyon	6,106	-3,841

Perforations

Perforated and open-hole intervals.

From	To	Type
6,138	7,280	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	2,526	11	500 S
4.5	7,396	7.875	450 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	May 24, 2000	Mar 23, 2000	Yes
00	May 4, 2000	—	—

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 42-435-35041 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-435-35041 → 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/43535041, documented in the API reference.