WELL · 42-163-34334 · DISTRICT 1

Lancaster #101H

Y

Frio County · Lorenzo (Austin Chalk) field · Producing  · Horizontal

Lancaster #101H (API 42-163-34334) is a horizontal well in Frio County operated by Blackbrush O & G LLC, completed June 7, 2024 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued April 3, 2024, permitted to 7,000 ft.

Completion filings report 10 formation tops, including Queen City, Navarro, Escondido, Olmos.

Its lease has reported 9.53K barrels of oil since June 2024, last reporting in July 2026.

Operator of record

Blackbrush O & G LLC

San Antonio, TX · P-5 Y, filed Aug 4, 2025 · 339 permits on file · (210) 569-6756

SOURCE · RRC EWA WELLBORE SCHEDULE

7,000
total depth, ft
1
permits on file
Apr 3, 2024
last permit issued
Jun 7, 2024
completed
9.53K
cumulative oil, bbl
0
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jun 2024 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Jun 7, 2024
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active

Surface location

28.728735, -99.038419

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Frio County.

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
Lancaster O-1-21510Lorenzo (Austin Chalk)Blackbrush O & G, LLC19.53K0Jun 2024 – Jul 2026

Oil, barrels lease total

Last 12 months 764 · prior 12 8,770(-91%)

02K4K202420252026

Chain of custody

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

  1. 1Blackbrush O & G, LLCJun 2024 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
898496-99DrillBlackbrush O & G, LLCApr 1, 2024Apr 3, 2024May 12, 20247,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-1-21510————

Formation tops

As filed on W-2/G-1. Subsea from 511 ft elevation.Download CSV →

FormationMD ftSubsea
Queen City1,141-630
Navarro3,622-3,111
Escondido4,095-3,584
Olmos5,254-4,743
Anacacho6,585-6,074
Austin ChalkAUSTIN CHALK - H2S6,808-6,297
Austin ChalkAUSTIN CHALK - H2S6,908-6,397
BudaBUDA - H2S——
Eagle FordEAGLE FORD - H2S——
GeorgetownGEORGETOWN - H2S——
Pearsall——

Perforations

Perforated and open-hole intervals.

FromToType
6,8558,897Perforated
6,8558,897Open hole

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
10.7575013.5260 S
73,7779.875765 S
76,8559.875665 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
00Apr 6, 2026Mar 19, 2026—
00Oct 9, 2025Oct 2, 2025—
00Oct 3, 2024Sep 9, 2024—

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.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Bsbm No.42-163-32677

1.8 KM · Triumph Petroleum Company,l.l.c. · Section with this well →

Queen City1,141-610
Carrizzo1,650-1,119
Wilcox2,900-2,369
Navarro3,622-3,091
Escondido4,095-3,564
Olmos5,254-4,723
Anacacho6,598-6,067
T/Anacacho Shale6,600-6,069

14 TOPS · FIRST 8

Derby South C42-163-34168

5.5 KM · Trinity Operating (Usg), LLC · Section with this well →

Queen City960-452
Olmos2,505-1,997
Navarro3,163-2,655
Anacacho3,203-2,695
Escondido3,998-3,490
Austin Chalk4,842-4,334
Eagle Ford5,642-5,134
Buda—

10 TOPS · FIRST 8

Derby South C42-163-34167

5.5 KM · Trinity Operating (Usg), LLC · Section with this well →

Queen City958-450
Olmos2,502-1,994
Navarro3,161-2,653
Anacacho3,205-2,697
Escondido4,001-3,493
Austin Chalk4,838-4,330
Eagle Ford5,619-5,111
Buda5,771-5,263

10 TOPS · FIRST 8

Derby South C42-163-34166

5.5 KM · Trinity Operating (Usg), LLC · Section with this well →

Queen City960-451
Olmos2,489-1,980
Navarro3,077-2,568
Anacacho3,117-2,608
Escondido3,917-3,408
Austin Chalk4,757-4,248
Eagle Ford5,573-5,064
Georgetown—

10 TOPS · FIRST 8

Derby North G42-163-34277

6.2 KM · Trinity Operating (Usg), LLC · Section with this well →

Escondido4,133-3,641
Olmos4,936-4,444
Anacacho6,230-5,738
Austin Chalk6,610-6,118
Eagle Ford6,857-6,365
Queen City—
Buda—
Georgetown—

10 TOPS · FIRST 8

Derby North G42-163-34276

6.2 KM · Trinity Operating (Usg), LLC · Section with this well →

Escondido4,134-3,644
Olmos4,947-4,457
San Miguel5,709-5,219
Anacacho6,249-5,759
Austin Chalk6,621-6,131
Eagle Ford6,869-6,379
Eagle Ford7,078-6,588
Georgetown—

10 TOPS · FIRST 8

Shiner Ranch42-163-34184

6.7 KM · Blackbrush O & G, LLC · Section with this well →

Olmos5,599-5,124
Anacacho6,930-6,455
Austin Chalk7,304-6,829
Pearsall—
Navarro—
Georgetown—
Queen City—
Eagle Ford—

10 TOPS · FIRST 8

Derby South H42-163-34174

6.7 KM · Trinity Operating (Usg), LLC · Section with this well →

Queen City958-478
Olmos2,496-2,016
Navarro3,149-2,669
Anacacho3,189-2,709
Escondido3,979-3,499
Austin Chalk4,813-4,333
Eagle Ford5,603-5,123
Buda—

10 TOPS · FIRST 8

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

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