WELL · 42-055-35180 · DISTRICT 1

Tiller Dorset & W.J. #4H

Caldwell County · Luling-Branyon field · Producing · Horizontal

Tiller Dorset & W.J. #4H (API 42-055-35180) is a horizontal well in Caldwell County operated by Texas Petroleum Investment CO., completed August 26, 2023 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued March 23, 2023, permitted to 2,300 ft.

Completion filings report 3 formation tops, including Austin Chalk, Buda, Edwards.

Its lease has reported 19.2K barrels of oil since August 2023, last reporting in July 2026.

Operator of record

Texas Petroleum Investment Co.

Houston, TX · P-5 Y, filed Jul 4, 2026 · 233 permits on file · (888) 214-3575

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Texas Petroleum Investment Co.
Production reports	Texas Petroleum Investment Co.through Apr 2026
Latest permit	Texas Petroleum Investment Co.Mar 23, 2023

2,300: total depth, ft
2: permits on file
Mar 23, 2023: last permit issued
Aug 26, 2023: completed
19.2K: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Aug 2023 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Aug 26, 2023
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active

Surface location

29.730455, -97.728003

OpenStreetMap → · Google Maps →

Permit surface location from the RRC GIS record, in Caldwell 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 →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Tiller, Dorset & W.J. O-1-21184	Luling-Branyon	Texas Petroleum Investment Co.	1	19.2K	0	Aug 2023 – Jul 2026

Oil, barrels lease total

Last 12 months 6,258 · prior 12 6,682(-6%)

Chain of custody

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

1Texas Petroleum Investment Co.Aug 2023 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
888057-98	Drill	Texas Petroleum Investment Co.	Jun 21, 2023	Mar 23, 2023	Aug 15, 2023	2,300
888057-99	Drill	Texas Petroleum Investment Co.	Feb 9, 2023	Mar 23, 2023	Aug 15, 2023	2,300

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-1-21184	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 456 ft elevation.Download CSV →

Formation	MD ft	Subsea
Austin Chalk	1,711	-1,255
BudaBUDA - DISPOSAL	1,943	-1,487
EdwardsEDWARDS - H2S, DISPOSAL	2,110	-1,654

Perforations

Perforated and open-hole intervals.

From	To	Type
2,333	3,573	Open hole

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
7.625	2,333	9.875	560 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 →

Suffix	Filed	W-2 / G-1 date	Logs referenced
00	Dec 20, 2023	Nov 30, 2023	Yes

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.

Wellbore filings for 42-055-35180 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-055-35180 → scanned completion filings

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 →

Secretariat42-055-35189

0.4 KM · Millennium Exploration Co. LLC · Section with this well →

Austin Chalk	1,634	-1,211
Eagle Ford	1,840	-1,417
Buda	1,874	-1,451
Georgetown	1,949	-1,526
Edwards	1,989	-1,566

Merriweather Unit42-055-34707

0.8 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,746	-1,307
Buda	1,917	-1,478
Del Rio	1,976	-1,537
Georgetown	2,022	-1,583
Edwards	2,098	-1,659

Proctor, G.W.42-055-34660

0.9 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,704	-1,283
Buda	1,934	-1,513
Edwards	2,102	-1,681

Proctor, G.W.42-055-34665

1.0 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,750	-1,287
Buda	1,980	-1,517
Edwards	2,153	-1,690

Stair, O.F.42-055-35170

1.4 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,702	-1,230
Buda	1,930	-1,458
Edwards	2,095	-1,623

Moore, Maggie42-055-34780

1.5 KM · Vintage Petroleum, Inc. · Section with this well →

Austin Chalk	1,695	-1,244
Buda	1,951	-1,500
Edwards	2,123	-1,672

Moore, Maggie42-055-35169

1.9 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,688	-1,231
Buda	1,924	-1,467
Edwards	2,092	-1,635

Gideon, T.C.42-055-35104

2.1 KM · Texas Petroleum Investment Co. · Section with this well →

Austin Chalk	1,721	-1,247
Buda	1,981	-1,507
Edwards	2,128	-1,654

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/05535180, documented in the API reference.