TEXAS · WELLS · MIDLAND COUNTY · API 42-329-01921 · DISTRICT 7B

Parks Roy -B- TG #12

Midland County · Dora Roberts (Consolidated) field · Producing · Vertical

Permitted field: Dora Roberts (Pennsylvanian)

Parks Roy -B- TG #12 (API 42-329-01921) is a well in Midland County operated by Cog Operating LLC, completed July 12, 1988 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued October 8, 1982, permitted to 13,177 ft.

It was permitted by Arco Oil & Gas CO. and has since transferred to Cog Operating LLC on the wellbore schedule.

Completion filings report 6 formation tops, including San Andres, Strawn, Bend, Mississippian.

Its 2 leases have reported 175K barrels of oil and 2.74M mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 26 wells, so these are lease totals, not this well alone.

Operator of record

COG Operating LLC

Permitted by Arco Oil & Gas Co.; the EWA schedule now lists a different operator.

Based in: Midland, TX
P-5 status: Active – Extension (X)
P-5 last filed: Jun 2, 2026
Permits on file: 4,568
Phone: (432) 683-7443

Create operator alert

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	COG Operating LLC
Production reports	COG Operating LLCthrough Apr 2026
Latest permit	Arco Oil & Gas Co.Oct 8, 1982

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

13,177: total depth, ft
1: permits on file
Oct 8, 1982: last permit issued
Jul 12, 1988: completed
175K: cumulative oil, bbl
2.74M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Jul 12, 1988
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active (A)

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 2 leases this well is completed on; they carry 26 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Parks, Roy -B- TG O-10-34636	Dora Roberts (Consolidated)	COG Operating LLC	15	150K	2.52M	Oct 1995 – Apr 2026
Parks, Roy -B- TG O-10-10576	Dora Roberts (Pennsylvanian)	Anadarko Petroleum Corporation	11	25.4K	215K	Jan 1993 – Sep 1995

Gas, mcf lease total

Last 12 months 10,382 · prior 12 29,378(-65%)

Oil, barrels lease total

Last 12 months 193 · prior 12 334(-42%)

Chain of custody

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

1Anadarko Petroleum CorporationJan 1993 → Nov 2004
2Merit Energy CompanyDec 2004 → Jul 2010
3PDC-WV-Co CorporationAug 2010 → Aug 2010
4PDC EnergySep 2010 → Jan 2012
5COG Operating LLCFeb 2012 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
173915-99	Recompletion	Arco Oil & Gas Co.	Oct 8, 1982	Oct 8, 1982	—	13,177

Completions

Completed	Lease	Field	Operator	Status	Depth
Jul 12, 1988	Parks Roy -B- TG O-10-34636	Dora Roberts (Consolidated)	COG Operating LLC	Producing	13,177
Jul 12, 1988	Parks Roy -B- TG O-10-10576	Dora Roberts (Pennsylvanian)	Anadarko Petroleum Corporation	Not on Schedule	—
—	Parks Roy -B- TG O-10-1166	Dora Roberts (Ellenburger)	COG Operating LLC	Not on Schedule	—
—	Parks Roy -B- TG O-10-1166	Dora Roberts (Ellenburger)	COG Operating LLC	Not on Schedule	—

Formation tops

As filed on W-2/G-1. Subsea from 2,848 ft elevation.Download CSV →

Formation	MD ft	Subsea
San Andres	4,695	-1,847
Strawn	9,867	-7,019
Bend	10,242	-7,394
MississippianMISS	11,270	-8,422
Devonian	11,461	-8,613
Ellenburger	13,056	-10,208

Perforations

Perforated and open-hole intervals.

From	To	Type
9,894	9,964	Perforated
10,247	10,398	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	310	17.25	300 S
8.625	5,975	11	3,130 S
2.875	9,739	—	—
2.375	13,050	—	—
5.5	13,150	7.875	900 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 →

RRC record date	W-2 / G-1 date	Logs referenced
Oct 17, 1995	Sep 16, 1988	—
Oct 5, 1988	Sep 16, 1988	—
Jan 12, 1984	Oct 18, 1982	—
Jan 12, 1984	—	—

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 42-329-01921 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-329-01921 → scanned completion filings

Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.

Find logs withinmiles of this well:List →Map →

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

0: bbl, last 12 reported months
0: bbl, all reported
—: reported through

UIC	Kind	Status	Permitted bbl/d	Max psi	Zone ft
000012236	UIC Permit	Canceled May 21, 1986	0	0	0–0

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/32901921, documented in the API reference.