Petrora

TEXAS · WELLS · ZAPATA COUNTY · ZACHRY, H.B. CO. LEASE · API 42-505-31942 · DISTRICT 04

Zachry H.B. Co. #4

Y

Zapata County · Fandango (Wilcox Consolidated) field · Producing  · Vertical

Zachry H.B. CO. #4 (API 42-505-31942) is a well in Zapata County operated by Stx Operating Company, completed February 19, 1996 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued November 16, 1984, permitted to 17,000 ft.

It was permitted by Shell Western E&P Inc. and has since transferred to Stx Operating Company on the wellbore schedule.

Completion filings report one formation top, including Wilcox.

No lease production has been reported under this well’s leases.

Operator of record

STX Operating Company

Permitted by Shell Western E&P Inc.; the EWA schedule now lists a different operator.

Watch this operatorWatch Zapata County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleBlock T Petroleum Inc.
Production reportsBlock "T" Petroleum, Inc.through Apr 2026
Latest permitShell Western E&P Inc.Nov 16, 1984

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

17,000
total depth, ft
1
permits on file
Nov 16, 1984
last permit issued
Feb 19, 1996
completed
0
cumulative oil, bbl
9.03M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Feb 19, 1996
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
Zachry, H.B. Co. G-4-118365Fandango (Wilcox, Upper T10)Block "T" Petroleum, Inc.109.03MJan 1993 – Jul 2026

Gas, mcf lease total

Last 12 months 7,480 · prior 12 8,898(-16%)

01K2K202420252026

Chain of custody

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

  1. 1Shell Western E&P Inc.Jan 1993 → Feb 2000
  2. 2Shell Western E&PMar 2000 → Dec 2007
  3. 3Comstock Oil & Gas, LPJan 2008 → Nov 2016
  4. 4Rockdale Energy, LLCDec 2016 → May 2020
  5. 5Block "T" Petroleum, Inc.Oct 2021 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
257845-99DrillShell Western E&P Inc.Nov 6, 1984Nov 16, 1984Mar 5, 198518,500

Completions

CompletedLeaseFieldOperatorStatusDepth
Feb 19, 1996Zachry H.B. Co. G-4-118365Fandango (Wilcox Consolidated)STX Operating CompanyProducing17,000

Formation tops

As filed on W-2/G-1. Subsea from 600 ft elevation.Download CSV →

FormationMD ftSubsea
WilcoxWILCOX (UPPER R)14,300-13,700
WilcoxWILCOX (UPPER, R)14,300-13,700
WilcoxWILCOX (UPPER,R)14,300-13,700
WilcoxWILCOX, UPPER R14,300-13,700
WilcoxWILCOX (UPPER S)14,685-14,085
WilcoxWILCOX (UPPER,S)14,685-14,085
WilcoxWILCOX (UPPER, S)14,865-14,265
WilcoxWILCOX UPPER S14,865-14,265
WilcoxWILCOX (UPPER T)15,100-14,500
WilcoxWILCOX (UPPER, T)15,100-14,500
WilcoxWILCOX UPPER T15,100-14,500
WilcoxWILCOX(UPPER,T)15,100-14,500
WilcoxWILCOX (UPPER T3)15,536-14,936
WilcoxWILCOX (UPPER, T3)15,536-14,936
WilcoxWILCOX UPPER T315,536-14,936
WilcoxWILCOX(UPPER,T3)15,536-14,936
WilcoxWILCOX (UPPER T6)15,811-15,211
WilcoxWILCOX (UPPER, T6)15,811-15,211
WilcoxWILCOX UPPER T615,811-15,211
WilcoxWILCOX(UPPER,T6)15,811-15,211
WilcoxWILCOX (UPPER T10)16,777-16,177
WilcoxWILCOX (UPPER, T10)16,777-16,177
WilcoxWILCOX (UPPER,T10)16,777-16,177
WilcoxWILCOX UPPER T1016,777-16,177

Perforations

Perforated and open-hole intervals.

FromToType
14,87015,020Perforated
15,26415,330Perforated
15,54815,590Perforated
15,83415,925Perforated
16,78816,908Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
161,223201,000 S
11.758,65814.751,550 S
9.62513,30410.6251,055 S
5.516,9788.51,710 S
516,9788.51,710 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 6, 1997Nov 25, 1996—
00Dec 11, 1995Oct 12, 1995—
00Nov 9, 1994Sep 21, 1994—
00Oct 18, 1985Sep 30, 1985Yes
00Oct 15, 1985——

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/50531942, documented in the API reference.