WELL · 42-321-31767 · DISTRICT 3

Trull #5A

N

Matagorda County · Markham field  · Vertical

Trull #5A (API 42-321-31767) is a well in Matagorda County operated by Underground Services Markham LLC, completed January 16, 1999.

The RRC has issued one drilling permit, issued August 21, 1998, permitted to 6,500 ft.

It was permitted by Texas Brine Company,L.L.C. and has since transferred to Underground Services Markham LLC on the wellbore schedule.

Completion filings report 2 formation tops, including Caprock, Top Salt.

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

It holds an active disposal or injection permit.

Operator of record

Underground Services Markham LLC

Permitted by Texas Brine Company,l.l.c.; the EWA schedule now lists a different operator.

Houston, TX · P-5 Y, filed Jan 5, 2026 · 8 permits on file · (713) 877-2700

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleUnderground Services Markham LLC
Production reportsnone
Latest permitTexas Brine Company,l.l.c.Aug 21, 1998

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

6,500
total depth, ft
1
permits on file
Aug 21, 1998
last permit issued
Jan 16, 1999
completed
0
cumulative oil, bbl
0
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Jan 16, 1999
Shut in
—
Plugged
—

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; they carry 8 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Trull O-3-11294MarkhamUnderground Services Markham,llc800Jan 1993 – Jul 2026

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

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
479492-99DrillTexas Brine Company,l.l.c.Aug 20, 1998Aug 21, 1998Aug 19, 19986,500

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-3-11294————
—— O-3-11294————

Formation tops

As filed on W-2/G-1. Subsea from 33 ft elevation.Download CSV →

FormationMD ftSubsea
CaprockTOP CAPROCK1,895-1,862
CaprockTOP CAPROCK1,900-1,867
Top Salt2,000-1,967
Top Salt2,026-1,993

Perforations

Perforated and open-hole intervals.

FromToType
2,4505,584Perforated
3,6506,500Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
42125——
42155——
36687422,740 S
301,559361,600 S
241,92530610 S
202,482262,385 S
162,990222,500 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 20, 2010May 28, 2009Yes
00Nov 12, 1999May 13, 1999Yes
00Jul 12, 1999May 13, 1999Yes
00Jun 7, 1999——

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.

Beyond the permit record

RRC UIC permits · H-10 reported volumes

Injection

0
bbl, last 12 reported months
0
bbl, all reported
Jan 1993
reported through
UICKindStatusPermitted bbl/dMax psiZone ft
000089252UIC PermitActive45,0001,9802,475–6,300
000072431UIC PermitPlugged Aug 16, 1998000–0

MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS

Last 12 months 0 · prior 12 0

0119921993

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/32131767, documented in the API reference.