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TEXAS · WELLS · WHARTON COUNTY · DUNCAN "A" LEASE · API 42-481-34277 · DISTRICT 03

Duncan A #1

Y

Wharton County · Bonus SW. (Wilcox) field · Producing  · Vertical

Duncan A #1 (API 42-481-34277) is a well in Wharton County operated by Hilcorp Energy Company, completed December 20, 2002 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued October 19, 2000, permitted to 13,555 ft.

It was permitted by Coastal Oil & Gas Corporation and has since transferred to Hilcorp Energy Company on the wellbore schedule.

Completion filings report 6 formation tops, including Frio, Yegua, Cook Mountain, Weches.

Its lease has reported 426K barrels of oil and 7.35M mcf of gas since January 2001, last reporting volume in April 2026.

Operator of record

Hilcorp Energy Company

Permitted by Coastal Oil & Gas Corporation; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active – Extension (X)
P-5 last filed
Mar 27, 2026
Permits on file
3,454
Phone
(713) 209-2400
Watch this operatorWatch Wharton County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleHilcorp Energy Company
Production reportsHilcorp Energy Companythrough Apr 2026
Latest permitCoastal Oil & Gas CorporationOct 19, 2000

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

13,555
total depth, ft
1
permits on file
Oct 19, 2000
last permit issued
Dec 20, 2002
completed
426K
cumulative oil, bbl
7.35M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 2001 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Dec 20, 2002
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
Duncan "A" G-3-180840Bonus, SW. (Wilcox)Hilcorp Energy Company1426K7.35MJan 2001 – Apr 2026

Gas, mcf lease total

Last 12 months 4,543 · prior 12 4,388(+4%)

0200400600202420252026

Chain of custody

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

  1. 1Coastal Oil & Gas CorporationJan 2001 → Jun 2001
  2. 2El Paso Production Oil & Gas Co.Jul 2001 → Jun 2002
  3. 3Dominion Expl. & Prod., Inc.Jul 2002 → Jul 2007
  4. 4XTO Energy Inc.Aug 2007 → Oct 2016
  5. 5Hilcorp Energy CompanyNov 2016 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
500981-99DrillCoastal Oil & Gas CorporationOct 19, 2000Oct 19, 2000Oct 28, 200014,700

Completions

CompletedLeaseFieldOperatorStatusDepth
Dec 20, 2002Duncan A G-3-180840Bonus SW. (Wilcox)Hilcorp Energy CompanyProducing13,555

Formation tops

As filed on W-2/G-1. Subsea from 126 ft elevation.Download CSV →

FormationMD ftSubsea
Frio3,600-3,474
Yegua6,570-6,444
Cook Mountain8,205-8,079
Weches8,685-8,559
Queen City9,290-9,164
Wilcox10,380-10,254

Perforations

Perforated and open-hole intervals.

FromToType
10,92210,928Perforated
10,92212,478Perforated
10,97210,978Perforated
10,98210,987Perforated
11,44611,456Perforated
11,46411,469Perforated
11,48711,500Perforated
11,50211,524Perforated
11,50811,516Perforated
11,52011,524Perforated
11,54411,546Perforated
11,56111,563Perforated
11,56111,568Perforated
11,72811,738Perforated
11,76311,766Perforated
11,81811,822Perforated
11,97211,978Perforated
11,98211,987Perforated
12,15412,159Perforated
12,47012,478Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3753,03417.51,897 S
9.62510,85012.251,354 S
513,5508.51,430 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
00May 8, 2003Apr 16, 2003—
00Jun 8, 2001Mar 28, 2001—
00Apr 4, 2001Feb 14, 2001Yes
00Feb 26, 2001——

Well logs

The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.

Open the RRC's log search for this well ↗

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/48134277, documented in the API reference.