WELL · 42-055-35106 · DISTRICT 1

Mercer 3H Unit #3ST

Caldwell County · Luling-Branyon field · Horizontal

Mercer 3h Unit #3ST (API 42-055-35106) is a horizontal well in Caldwell County operated by Texas Petroleum Investment CO., completed August 28, 2015.

The RRC has issued 2 drilling permits (amended once) between 2015 and 2018, permitted to 2,300 ft.

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

Its lease has reported 975 barrels of oil since August 2015, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.

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 May 2019
Latest permit	Texas Petroleum Investment Co.Dec 14, 2018

2,300: total depth, ft
3: permits on file
Dec 14, 2018: last permit issued
Aug 28, 2015: completed
975: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Aug 2015 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: Aug 28, 2015
Shut in: —
Plugged: —

Surface location

29.755540, -97.698610

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; they carry 2 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Mercer 3H Unit O-1-18712	Luling-Branyon	Texas Petroleum Investment Co.	2	975	0	Aug 2015 – Jul 2026

No volumes reported on these leases in the last three years.

Chain of custody

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

1Texas Petroleum Investment Co.Aug 2015 → May 2019

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
847730-98	Recompletion	Texas Petroleum Investment Co.	Jun 28, 2019	Dec 14, 2018	Feb 18, 2019	2,300
847730-99	Recompletion	Texas Petroleum Investment Co.	Dec 11, 2018	Dec 14, 2018	—	2,300
808733-99	Drill	Texas Petroleum Investment Co.	Jul 23, 2015	Jul 31, 2015	Aug 14, 2015	2,300

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-1-18712	—	—	—	—
—	— O-1-18712	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 499 ft elevation.Download CSV →

Formation	MD ft	Subsea
Austin Chalk	1,698	-1,199
BudaBUDA - DISPOSAL	1,963	-1,464
EdwardsEDWARDS - H2S, DISPOSAL	2,128	-1,629

Perforations

Perforated and open-hole intervals.

From	To	Type
2,623	3,996	Open hole
2,769	4,303	Open hole

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
7.625	2,769	9.875	620 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	Oct 22, 2019	Jun 25, 2019	Yes
00	Mar 31, 2016	Sep 14, 2015	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 42-055-35106 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-055-35106 → 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 →

Mercer 4H Unit42-055-35155

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

Austin Chalk	1,742	-1,240
Buda	1,967	-1,465
Edwards	2,134	-1,632

Mercer 7H Unit42-055-35177

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

Austin Chalk	1,749	-1,244
Buda	1,976	-1,471
Edwards	2,150	-1,645

Tabor, W.H.42-055-34582

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

Austin Chalk	1,769	-1,287
Buda	1,930	-1,448
Edwards	2,093	-1,611

Mercer, W.F.42-055-34782

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

Austin Chalk	1,760	-1,272
Buda	1,932	-1,444
Del Rio	2,008	-1,520
Georgetown	2,063	-1,575
Edwards	2,083	-1,595

Mercer, Alf42-055-35167

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

Austin Chalk	1,699	-1,202
Buda	1,920	-1,423
Edwards	2,084	-1,587

Mercer, Alf42-055-34793

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

Del Rio	2,015	-1,573
Georgetown	2,060	-1,618
Edwards	2,137	-1,695

Mercer, Mattie42-055-35178

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

Austin Chalk	1,782	-1,302
Buda	2,016	-1,536
Edwards	2,188	-1,708

Tabor, W.H.42-055-35166

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

Austin Chalk	1,712	-1,220
Buda	1,940	-1,448
Edwards	2,103	-1,611

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/05535106, documented in the API reference.