WELL · 42-461-43003 · DISTRICT 7

Drilly Idol B5 #5504LH

Y

Upton County · Spraberry (Trend Area) field · Producing  · Horizontal

Drilly Idol B5 #5504LH (API 42-461-43003) is a horizontal well in Upton County operated by Cog Operating LLC, completed December 10, 2025 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued November 26, 2024, permitted to 12,000 ft.

Completion filings report 9 formation tops, including Yates, Grayburg, San Andres, Spraberry.

Its lease has reported 83.5K barrels of oil and 125K mcf of gas since May 2025, last reporting in July 2026.

Operator of record

COG Operating LLC

Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleCOG Operating LLC
Production reportsCOG Operating LLCthrough Apr 2026
Latest permitCOG Operating LLCNov 26, 2024
12,000
total depth, ft
2
permits on file
Nov 26, 2024
last permit issued
Dec 10, 2025
completed
83.5K
cumulative oil, bbl
125K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · May 2025 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Dec 10, 2025
Shut in
—
Plugged
—

Operator's P-5 on the schedule: X

Surface location

31.345980, -101.982009

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Upton County.

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 →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Drilly Idol B5 O-9-23175Spraberry (Trend Area)COG Operating LLC183.5K125KMay 2025 – Jul 2026

Oil, barrels lease total

Last 12 months 83,510 · prior 12 0

010K20K30K202420252026

Gas, mcf lease total

Last 12 months 125,342 · prior 12 0

020K40K202420252026

Chain of custody

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

  1. 1COG Operating LLCDec 2025 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
903371-98DrillCOG Operating LLCJun 2, 2025Nov 26, 2024Jan 25, 202512,000
903371-99DrillCOG Operating LLCOct 17, 2024Nov 26, 2024Jan 25, 202512,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-9-23175————

Formation tops

As filed on W-2/G-1. Subsea from 2,664 ft elevation.Download CSV →

FormationMD ftSubsea
Yates2,338326
Yates2,339325
Grayburg4,325-1,661
Grayburg4,329-1,665
San AndresSAN ANDRES - SALTWATER FLOW4,387-1,723
San AndresSAN ANDRES - SALTWATER FLOW4,394-1,730
Spraberry7,952-5,288
Spraberry7,979-5,315
Devonian——
Ellenburger——
Fusselman——
Strawn——
Wolfcamp——

Perforations

Perforated and open-hole intervals.

FromToType
8,58919,398Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,02417.5875 S
9.6255,06912.251,710 S
5.519,4688.752,770 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Feb 26, 2026Feb 4, 2026—
00Aug 12, 2025Aug 4, 2025Yes

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.

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

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 neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Drilly Idol B442-461-42994

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

Yates2,334335
Grayburg4,337-1,668
San Andres4,392-1,723
Spraberry7,974-5,305
Wolfcamp9,194-6,525
Fusselman—
Devonian—
Ellenburger—

9 TOPS · FIRST 8

Drilly Idol B642-461-42995

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

Yates2,339330
Grayburg4,326-1,657
San Andres4,386-1,717
Spraberry7,949-5,280
Wolfcamp8,768-6,099
Fusselman—
Devonian—
Ellenburger—

9 TOPS · FIRST 8

Drilly Idol B342-461-42993

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

Yates2,333336
Grayburg4,332-1,663
San Andres4,397-1,728
Spraberry7,296-4,627
Fusselman—
Ellenburger—
Devonian—
Wolfcamp—

9 TOPS · FIRST 8

Drilly Idol B142-461-42991

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

Yates2,325344
Grayburg4,348-1,679
San Andres4,391-1,722
Spraberry7,961-5,292
Devonian—
Ellenburger—
Fusselman—
Strawn—

9 TOPS · FIRST 8

Drilly Idol B242-461-42992

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

Yates2,324345
Grayburg4,349-1,680
San Andres4,394-1,725
Spraberry7,961-5,292
Wolfcamp8,741-6,072
Ellenburger—
Fusselman—
Strawn—

9 TOPS · FIRST 8

Drilly Idol A842-461-42990

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

Yates2,327340
Grayburg4,354-1,687
San Andres4,467-1,800
Spraberry7,956-5,289
Wolfcamp9,194-6,527
Devonian—
Strawn—
Fusselman—

9 TOPS · FIRST 8

Drilly Idol A742-461-42989

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

Yates2,327340
Grayburg4,356-1,689
San Andres4,473-1,806
Spraberry7,268-4,601
Wolfcamp—
Strawn—
Ellenburger—
Devonian—

9 TOPS · FIRST 8

Drilly Idol A642-461-42978

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

Yates2,326341
Grayburg4,380-1,713
San Andres4,485-1,818
Spraberry7,958-5,291
Wolfcamp8,758-6,091
Ellenburger—
Strawn—
Fusselman—

9 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

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