TEXAS · WELLS · MIDLAND COUNTY · WINDHAM TXL C8 LEASE · API 42-329-42088 · DISTRICT 6E

Windham TXL C8 #5206LH

Midland County · Pegasus (Consolidated) field · Producing · Horizontal

Windham Txl C8 #5206LH (API 42-329-42088) is a horizontal well in Midland County operated by Cog Operating LLC, completed October 9, 2018 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 20, 2017, permitted to 8,973 ft.

Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.

Its lease has reported 304K barrels of oil and 1.04M mcf of gas since October 2018, last reporting volume in April 2026.

Operator of record

COG Operating LLC

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

Watch this operator Watch Midland County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	COG Operating LLC
Production reports	COG Operating LLCthrough Apr 2026
Latest permit	COG Operating LLCNov 20, 2017

8,973: total depth, ft
1: permits on file
Nov 20, 2017: last permit issued
Oct 9, 2018: completed
304K: cumulative oil, bbl
1.04M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2018 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Oct 9, 2018
Shut in: —
Plugged: —

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

Surface location

31.688510, -102.113170 NAD27, as filed

31.688643, -102.113584 WGS84

Google Maps ↗

Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Midland County.

Wells nearby

Withinmiles

Every well with a location on file around this one, in any state, nearest first.

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Texas locations come from drilling permits, so most older Texas wells have none and are not listed.

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
Windham TXL C8 O-9-20158	Pegasus (Consolidated)	COG Operating LLC	1	304K	1.04M	Oct 2018 – Apr 2026

Gas, mcf lease total

Last 12 months 119,114 · prior 12 108,941(+9%)

Oil, barrels lease total

Last 12 months 2,490 · prior 12 10,085(-75%)

Chain of custody

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

1COG Operating LLCOct 2018 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
833041-99	Drill	COG Operating LLC	Nov 8, 2017	Nov 20, 2017	Apr 29, 2018	11,000

Completions

Completed	Lease	Field	Operator	Status	Depth
Oct 9, 2018	Windham TXL C8 O-9-20158	Pegasus (Consolidated)	COG Operating LLC	Producing	8,973

Formation tops

As filed on W-2/G-1. Subsea from 2,837 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	903	1,934
Yates	1,325	1,512
Seven Rivers	2,022	815
Queen	4,044	-1,207
Grayburg	4,382	-1,545
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	4,692	-1,855
Glorieta	5,391	-2,554
Clear ForkCLEARFORK	6,944	-4,107
Spraberry	8,704	-5,867
SpraberrySPRABERRY UPPER-DEAN	9,030	-6,193

Perforations

Perforated and open-hole intervals.

From	To	Type
9,186	16,855	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	525	17.5	550 S
9.625	8,985	12.25	740 S
5.5	16,970	8.5	1,795 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	Mar 15, 2019	Feb 5, 2019	Yes

Well logs

1 log loaded from the RRC's log index, the latest received Jul 7, 2021. Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.

Open the RRC's log search for this well ↗

Logas described	Files	Intervalft, as filed	Datereceived	SizeMB
Neutron	TIFF	from 9,238	Jul 7, 2021	9.73

Find logs withinmiles of this well:List →Map →

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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 42-329-42088 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-329-42088 → scanned completion filings

The logs loaded for this well are under Well logs, with the RRC's log search for it.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Windham TXL C942-329-42078

0.0 KM · COG Operating LLC · Section with this well →

Santa Rosa	905	1,932
Yates	2,735	102
Seven Rivers	3,001	-164
Queen	3,982	-1,145
Grayburg	4,350	-1,513
San Andres	4,597	-1,760
Glorieta	5,218	-2,381
Clear Fork	6,933	-4,096

10 TOPS · FIRST 8

Rio Wichita 15-10 H42-329-43716

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	5,396	-2,563
San Andres	6,107	-3,274
Clear Fork	7,018	-4,185
Glorieta	7,023	-4,190

10 TOPS · FIRST 8

Rio Wichita 15-10 H42-329-43365

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,428
Yates	2,763	-375
Seven Rivers	3,160	-772
Queen	4,022	-1,634
Grayburg	4,770	-2,382
San Andres	5,396	-3,008
Glorieta	6,107	-3,719
Clear Fork	7,014	-4,626

10 TOPS · FIRST 8

Rio Wichita 15-10 G42-329-43366

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	4,770	-1,937
San Andres	5,396	-2,563
Glorieta	6,107	-3,274
Clear Fork	7,008	-4,175

10 TOPS · FIRST 8

Rio Wichita 15-10 G42-329-43717

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	5,396	-2,563
San Andres	6,107	-3,274
Glorieta	7,023	-4,190
Clear Fork	7,858	-5,025

10 TOPS · FIRST 8

Rio Wichita 15-10 G42-329-43715

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	5,396	-2,563
San Andres	6,107	-3,274
Clear Fork	7,020	-4,187
Glorieta	7,023	-4,190

12 TOPS · FIRST 8

Rio Wichita 15-10 F42-329-43362

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	4,770	-1,937
San Andres	5,396	-2,563
Glorieta	6,107	-3,274
Clear Fork	7,023	-4,190

10 TOPS · FIRST 8

Rio Wichita 15-10 F42-329-43718

1.0 KM · Endeavor Energy Resources L.P. · Section with this well →

Santa Rosa	960	1,873
Yates	2,763	70
Seven Rivers	3,160	-327
Queen	4,022	-1,189
Grayburg	4,770	-1,937
San Andres	5,396	-2,563
Glorieta	6,107	-3,274
Clear Fork	7,022	-4,189

10 TOPS · FIRST 8

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/32942088, documented in the API reference.