WELL · 42-355-33920 · DISTRICT 4

Chapman Ranch #439

Plugged

Nueces County · Chapman Ranch (Upper Frio Cons.) field · Vertical

Chapman Ranch #439 (API 42-355-33920) is a plugged well in Nueces County, plugged November 3, 2023, last operated by Decker Operating CO. L.L.C..

The RRC has issued one drilling permit, issued July 25, 2008, permitted to 6,000 ft.

Completion filings report 2 formation tops, including Massive Catahoula, Frio.

Operator of record

Decker Operating Co. L.L.C.

Houston, TX · P-5 Y, filed Jan 4, 2026 · 137 permits on file · (361) 289-1641

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Decker Operating Co. L.L.C.
Production reports	Decker Operating Co., L.L.C.through Apr 2012
Latest permit	Decker Operating Co., L.L.C.Jul 25, 2008

6,000: total depth, ft
1: permits on file
Jul 25, 2008: last permit issued
Apr 17, 2009: completed
0: cumulative oil, bbl
26.5K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2008 THROUGH Jan 2024

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Apr 17, 2009
Shut in: —
Plugged: Nov 3, 2023

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
Chapman Ranch G-4-247512	Chapman Ranch (Upper Frio Cons.)	Decker Operating Co., L.L.C.	1	0	26.5K	Oct 2008 – Jan 2024

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.

1Decker Operating Co., L.L.C.Oct 2008 → Apr 2012

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
666191-99	Drill	Decker Operating Co., L.L.C.	Jul 7, 2008	Jul 25, 2008	Sep 18, 2008	6,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-4-247512	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 42 ft elevation.Download CSV →

Formation	MD ft	Subsea
Massive Catahoula	4,720	-4,678
FrioTOP FRIO	5,270	-5,228

Perforations

Perforated and open-hole intervals.

From	To	Type
4,892	4,897	Perforated
4,906	4,910	Perforated
4,926	4,930	Perforated
4,968	4,972	Perforated
5,031	5,034	Perforated
5,049	5,052	Perforated
5,330	5,332	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	1,051	12.25	392 S
5.5	5,810	7.625	355 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 →

Filed	W-2 / G-1 date	Logs referenced
Sep 15, 2023	Jul 13, 2023	—
Aug 3, 2023	Jul 18, 2023	—
Jun 18, 2009	Mar 24, 2009	Yes
Jun 1, 2009	—	—

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 42-355-33920 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-355-33920 → 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/35533920, documented in the API reference.