TEXAS · WELLS · WISE COUNTY · API 42-497-32759 · DISTRICT 7C

Slay #9

Y

Wise County · Morris (Consolidated Congl.) field · Producing  · Vertical

Slay #9 (API 42-497-32759) is a well in Wise County operated by Large Operating LLC, completed May 12, 1986 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued April 13, 1984, permitted to 5,980 ft.

It was permitted by Cities Service Oil & Gas Corp. and has since transferred to Large Operating LLC on the wellbore schedule.

Completion filings report 4 formation tops, including Caddo, 1 Conglomerate, I Congl, Marble Falls.

Its 2 leases have reported 11.1K barrels of oil and 672K mcf of gas since January 1993, last reporting in July 2026. The leases carry 10 wells, so these are lease totals, not this well alone.

Operator of record

Large Operating LLC

Permitted by Cities Service Oil & Gas Corp.; the EWA schedule now lists a different operator.

Based in
Stinnett, TX
P-5 status
Active (A)
P-5 last filed
Oct 17, 2025
Permits on file
2
Phone
(212) 798-1320

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleMilagro Exploration LLC
Production reportsLarge Operating LLCthrough Apr 2026
Latest permitCities Service Oil & Gas Corp.Apr 13, 1984

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

5,980
total depth, ft
1
permits on file
Apr 13, 1984
last permit issued
May 12, 1986
completed
11.1K
cumulative oil, bbl
672K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
May 12, 1986
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active – Extension (X)

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 10 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Slay G-13-175779Morris (Consolidated Congl.)Large Operating LLC10239KNov 1999 – Jul 2026
Slay O-13-17340Morris (Consolidated Congl.)Milagro Exploration, LLC911.1K434KJan 1993 – Dec 2011

Gas, mcf lease total

Last 12 months 3,742 · prior 12 3,713(+1%)

0200400600202420252026

Chain of custody

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

  1. 1OXY USA Inc.Jan 1993 → Dec 1997
  2. 2JW Energy Co., LtdJan 1998 → Nov 2000
  3. 3WG Operating, Inc.Dec 2000 → Nov 2010
  4. 4Milagro Exploration, LLCDec 2010 → Oct 2015
  5. 5White Oak Operating Company LLCNov 2015 → Oct 2018
  6. 6Big Mountain Operating LLCNov 2018 → Jul 2020
  7. 7Everest Energy LLCAug 2020 → May 2021
  8. 8Large Operating LLCJun 2021 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
235545-99DrillCities Service Oil & Gas Corp.Apr 9, 1984Apr 13, 1984—5,975

Completions

CompletedLeaseFieldOperatorStatusDepth
May 12, 1986Slay G-13-175779Morris (Consolidated Congl.)Large Operating LLCProducing5,980
May 12, 1984Slay O-13-17340Morris (Consolidated Congl.)Milagro Exploration LLCNot on Schedule—

Formation tops

As filed on W-2/G-1. Subsea from 887 ft elevation.Download CSV →

FormationMD ftSubsea
Caddo4,772-3,885
1 Conglomerate5,268-4,381
I Congl5,268-4,381
Marble Falls5,852-4,965

Perforations

Perforated and open-hole intervals.

FromToType
5,2725,276Perforated
5,3355,339Perforated
5,3585,379Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
8.62530212.25300 S
5.55,5837.875500 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
00Mar 20, 2000Dec 14, 1999—
00Mar 1, 2000——
00Jun 14, 1984Jun 1, 1984—
00Jun 13, 1984Jun 1, 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.

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/49732759, documented in the API reference.