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TEXAS · WELLS · NACOGDOCHES COUNTY · WILLIS UNIT LEASE · API 42-347-33117 · DISTRICT 06

Willis Unit #1

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Nacogdoches County · Martinsville (Travis Peak) field · Producing  · Vertical

Willis Unit #1 (API 42-347-33117) is a well in Nacogdoches County operated by Sydri Operating LLC, completed January 11, 2010 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 2, 2009, permitted to 10,980 ft.

It was permitted by Eog Resources, Inc. and has since transferred to Sydri Operating LLC on the wellbore schedule.

Completion filings report 10 formation tops, including Midway, Saratoga, B. Austin Chalk, Washita-Fredericksburg.

Its lease has reported 6.21K barrels of oil and 417K mcf of gas since January 2010, last reporting volume in April 2026.

Operator of record

Sydri Operating LLC

Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.

Based in
Dallas, TX
P-5 status
Active (A)
P-5 last filed
Mar 11, 2026
Permits on file
46
Phone
(214) 373-8626
Watch this operatorWatch Nacogdoches County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleSydri Operating LLC
Production reportsSydri Operating, LLCthrough Apr 2026
Latest permitEOG Resources, Inc.Nov 2, 2009

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

10,980
total depth, ft
1
permits on file
Nov 2, 2009
last permit issued
Jan 11, 2010
completed
6.21K
cumulative oil, bbl
417K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 2010 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jan 11, 2010
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 lease this well is completed on; this well is the only one on it.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Willis Unit G-6-255190Martinsville (Travis Peak)Sydri Operating, LLC16.21K417KJan 2010 – Apr 2026

Gas, mcf lease total

Last 12 months 4,503 · prior 12 4,806(-6%)

05001K1.5K202420252026

Chain of custody

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

  1. 1EOG Resources, Inc.Jan 2010 → May 2014
  2. 2Tanos Exploration II, LLCJun 2014 → Jun 2018
  3. 3Titan Rock E&P, LLCJul 2018 → Mar 2023
  4. 4Sydri Operating, LLCApr 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
686788-99DrillEOG Resources, Inc.Oct 30, 2009Nov 2, 2009Nov 29, 200911,200

Completions

CompletedLeaseFieldOperatorStatusDepth
Jan 11, 2010Willis Unit G-6-255190Martinsville (Travis Peak)Sydri Operating LLCProducing10,980

Formation tops

As filed on W-2/G-1. Subsea from 390 ft elevation.Download CSV →

FormationMD ftSubsea
Midway2,550-2,160
Saratoga3,325-2,935
B. Austin Chalk4,715-4,325
Washita-Fredericksburg4,860-4,470
Anhydrite7,025-6,635
Rodessa7,210-6,820
James LimeJAMES7,720-7,330
SligoSLIGO/PETTET8,005-7,615
Travis Peak8,585-8,195
Cotton Valley10,915-10,525

Perforations

Perforated and open-hole intervals.

FromToType
8,6198,620Perforated
8,7048,705Perforated
8,7488,749Perforated
8,8078,808Perforated
8,8238,824Perforated
8,8568,857Perforated
8,9148,916Perforated
8,9308,931Perforated
8,9658,967Perforated
8,9918,992Perforated
9,1159,116Perforated
9,1529,153Perforated
9,2139,214Perforated
9,2679,268Perforated
9,2819,282Perforated
9,3379,338Perforated
9,3539,354Perforated
9,4409,441Perforated
9,4579,459Perforated
9,5129,513Perforated
9,5859,586Perforated
9,6059,607Perforated
10,13710,138Perforated
10,16210,163Perforated
10,18410,185Perforated
10,24010,241Perforated
10,24910,250Perforated
10,29410,295Perforated
10,47110,472Perforated
10,50310,504Perforated
10,51410,515Perforated
10,52910,530Perforated
10,57410,576Perforated
10,61510,616Perforated
10,63710,638Perforated
10,67210,673Perforated
10,74010,741Perforated
10,76710,768Perforated
10,86010,862Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
10.752,60913.51,086 S
5.510,9809.8751,669 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 →

SuffixRRC record dateW-2 / G-1 dateLogs referenced
00Jun 14, 2010Feb 18, 2010Yes
00Mar 26, 2010——

Well logs

1 log loaded from the RRC's log index, the latest received Dec 12, 2012. Density, Neutron, Resistivity. 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 describedFiles Intervalft, as filedDatereceivedSizeMB
COMBINATION: RESISTIVITY/NEUTRON/DENSITY POROSITYSpans Midway, Saratoga, B. Austin Chalk, Washita-Fredericksburg, Anhydrite, Rodessa, James Lime, Sligo, Travis Peak, Cotton ValleyTIFF2,610 to 10,986Dec 12, 2012run Dec 14, 200923.1

"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.

Find logs withinmiles of this well:List →Map →

Search the well logs loaded into Petrora →

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.

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

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/34733117, documented in the API reference.