TEXAS · WELLS · DE WITT COUNTY · MUSSELMAN UNIT D LEASE · API 42-123-32855 · DISTRICT 02

Musselman Unit D #1

On schedule

De Witt County · Eagleville (Eagle Ford-2) field · Producing  · Horizontal

Fields on the latest permit · any of 2
De Witt (Eagle Ford Shale) · Eagleville (Eagle Ford-2)
Not one formation; the well must be completed in one of them, and no target formation is stated.

Musselman Unit D #1 (API 42-123-32855) is a horizontal well in De Witt County operated by Ensign Natural Resources II LLC, completed January 26, 2014 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued August 10, 2012, permitted to 12,584 ft.

It was permitted by Burlington Resources O & G CO LP and has since transferred to Ensign Natural Resources II LLC on the wellbore schedule.

Completion filings report 3 formation tops, including Pecan Gap, Austin Chalk, Eagle Ford.

Its lease has reported 180K barrels of oil and 526K mcf of gas since December 2012, last reporting volume in July 2026.

Operator of record

Ensign Natural Resources II LLC

Permitted by Burlington Resources O & G Co LP; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active (A)
P-5 last filed
Jun 29, 2026
Permits on file
13
Phone
(346) 809-4062

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleEnsign Natural Resources II LLC
Production reportsEnsign Natural Resources II LLCthrough Jul 2026
Latest permitBurlington Resources O & G Co LPAug 10, 2012

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

12,584
total depth, ft
1
permits on file
Aug 10, 2012
last permit issued
Jan 26, 2014
completed
180K
cumulative oil, bbl
526K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · AUG 2013 THROUGH JUL 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jan 26, 2014
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.

Wells nearby

Every well with a location on file around this well, 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 AUG 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
Musselman Unit D O-2-10432Eagleville (Eagle Ford-2)Ensign Natural Resources II LLC1180K526KDec 2012 – Jul 2026

Oil, barrels lease total

Last 12 months 966 · prior 12 2,218(-56%)

05001K1.5K202420252026

Gas, mcf lease total

Last 12 months 2,645 · prior 12 6,568(-60%)

01K2K202420252026

Wells named Musselman Unit D

Ensign Natural Resources II LLC's other wells filed under this lease name in De Witt County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.

Loading the lease's wells

Chain of custody

Operator on the lease's P-4

Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.

OperatorFromTo
Ensign Natural Resources II LLCSep 1, 2026today
Burlington Resources O & G Co LPDec 7, 2012Sep 1, 2026

Reporting production

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

  1. 1Burlington Resources O & G Co LPAug 2013 → Jul 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
745647-99DrillBurlington Resources O & G Co LPJul 31, 2012Aug 10, 2012Feb 27, 201317,000

Completions

CompletedLeaseFieldOperatorStatusDepth
Jan 26, 2014Musselman Unit D O-2-10432Eagleville (Eagle Ford-2)Ensign Natural Resources II LLCProducing12,584

Formation tops

As filed on W-2/G-1. Subsea from 220 ft elevation.Download CSV →

FormationMD ftSubsea
Pecan Gap11,728-11,508
Austin Chalk11,970-11,750
Eagle Ford12,460-12,240

Perforations

Perforated and open-hole intervals.

FromToType
12,95018,610Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6253,19812.251,172 S
5.518,7958.752,216 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 9, 2014Apr 2, 2014—
00Nov 7, 2013Sep 9, 2013—
00May 10, 2013Mar 13, 2013Yes

Well logs

1 log loaded from the RRC's log index, the latest received Jan 13, 2016. Resistivity.

Click a log to get its files from the RRC (free account). It opens in a new tab on the RRC's log search for this well, which lists each file to view or download; the RRC has no address for a single file.

Logas describedFiles Intervalft, as filedDatereceivedSizeMB
RESISTIVITYSpans Pecan Gap, Austin Chalk, Eagle FordTIFF3,204 to 18,814Jan 13, 2016run Dec 2, 20122.53

"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.

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.

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.

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/12332855, documented in the API reference.