WELL · 42-255-31544 · DISTRICT 2

Sugar Loaf #1

Plugged

Karnes County · Wildcat field · Vertical

Sugar Loaf #1 (API 42-255-31544) is a plugged well in Karnes County, plugged April 6, 2017, last operated by Marathon Oil EF LLC.

The RRC has issued one drilling permit (amended once), issued July 27, 2006, permitted to 21,000 ft.

It was permitted by Texas Crude Energy, Inc. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.

Completion filings report 4 formation tops, including Austin Chalk, Edwards, Sligo, Travis Peak.

Operator of record

Marathon Oil EF LLC

Permitted by Texas Crude Energy, Inc.; the EWA schedule now lists a different operator.

Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Marathon Oil EF LLC
Production reports	none
Latest permit	Texas Crude Energy, Inc.Jul 27, 2006

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

21,000: total depth, ft
2: permits on file
Jul 27, 2006: last permit issued
Sep 11, 2007: completed
0: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Sep 2007 THROUGH Apr 2017

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Sep 11, 2007
Shut in: —
Plugged: Apr 6, 2017

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
Sugar Loaf G-2-231109	Wildcat	Marathon Oil EF LLC	1	0	0	Sep 2007 – Apr 2017

No volumes reported on these leases in the last three years.

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
622937-98	Drill	Texas Crude Energy, Inc.	Sep 25, 2006	Jul 27, 2006	Aug 17, 2006	21,000
622937-99	Drill	Texas Crude Energy, Inc.	Jul 20, 2006	Jul 27, 2006	—	14,500

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— G-2-231109	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 442 ft elevation.Download CSV →

Formation	MD ft	Subsea
Austin Chalk	11,982	-11,540
Edwards	12,288	-11,846
Sligo	14,910	-14,468
Travis PeakHOSSTON	17,970	-17,528

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
18.625	910	22	841 S
13.375	6,500	17.5	3,778 S
9.625	14,480	12.25	1,245 S
5	16,449	9.625	315 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	Jan 2, 2008	Aug 28, 2007	Yes
00	Dec 4, 2007	—	—

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 42-255-31544 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-31544 → 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/25531544, documented in the API reference.