Petrora

WELL · 42-041-31010 · DISTRICT 3

Ruffino Preston Jr. a Unit #1

Plugged

Brazos County · Giddings (Buda) field  · Horizontal · Sidetrack

Ruffino Preston JR. A Unit #1 (API 42-041-31010) is a plugged horizontal well in Brazos County, plugged May 23, 2014, last operated by Anadarko E&P Onshore LLC.

The RRC has issued 3 drilling permits between 1983 and 1995, permitted to 8,500 ft.

It was permitted by Union Pacific Resources Company and has since transferred to Anadarko E&P Onshore LLC on the wellbore schedule.

Completion filings report 6 formation tops, including Pecan Gap, Austin Chalk, Eagle Ford, False Buda.

Its 4 leases have reported 55.7K barrels of oil and 62.2K mcf of gas since January 1993, last reporting in September 2014. The leases carry 4 wells, so these are lease totals, not this well alone.

Operator of record

Anadarko E&P Onshore LLC

Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.

Based in
Houston, TX
P-5 status
Active (A)
P-5 last filed
Oct 22, 2025
Permits on file
4,575
Phone
(713) 215-7000
Watch this operatorWatch Brazos County

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleUnion Pacific Resources Company
Production reportsAnadarko E&P Company LPthrough Nov 2003
Latest permitUnion Pacific Resources CompanyApr 20, 1995

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

8,500
total depth, ft
3
permits on file
Apr 20, 1995
last permit issued
May 24, 1995
completed
55.7K
cumulative oil, bbl
62.2K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Sep 2014

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
May 24, 1995
Shut in
—
Plugged
May 23, 2014

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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Ruffino, P. Jr. "A" O-3-21793Giddings (Austin Chalk-3)Anadarko E&P Onshore LLC1330306Jan 1993 – Sep 2014
Ruffino, Preston Jr. "a" Unit O-3-25012Giddings (Buda)Anadarko E&P Onshore LLC100Aug 2007 – Sep 2014
Ruffino, Preston Jr. "a" Unit O-3-22847Caldwell, NE (Georgetown)Anadarko E&P Company LP155.3K61.9KMay 1995 – Jan 2008
Ruffino, P. Jr. "A" O-3-16972Kurten (Buda)Union Pacific Resources Company100Jan 1993 – Feb 1993

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.

  1. 1Union Pacific Resources CompanyJan 1993 → Jan 2001
  2. 2Rme Petroleum CompanyFeb 2001 → Nov 2002
  3. 3Anadarko E&P Company LPDec 2002 → Nov 2003

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
435010-99Recompletion · sidetrackUnion Pacific Resources CompanyApr 19, 1995Apr 20, 1995Apr 29, 19958,430
402773-99RecompletionUnion Pacific Resources CompanyAug 26, 1992Aug 28, 1992Sep 11, 19928,430
209227-99DrillChamplin Petroleum Co.Aug 22, 1983Sep 1, 1983Sep 11, 19838,500

Completions

CompletedLeaseFieldOperatorStatusDepth
May 24, 1995Ruffino Preston Jr. a Unit O-3-25012Giddings (Buda)Anadarko E&P Onshore LLCPlugged—
May 24, 1995Ruffino Preston Jr. a Unit O-3-22847Caldwell NE (Georgetown)Anadarko E&P Company LPPlugged—
Nov 1, 1992Ruffino P. Jr. A O-3-21793Giddings (Austin Chalk-3)Anadarko E&P Onshore LLCPlugged—
Oct 10, 1983Ruffino P. Jr. A O-3-16972Kurten (Buda)Union Pacific Resources CompanyPlugged—

Formation tops

As filed on W-2/G-1. Subsea from 362 ft elevation.Download CSV →

FormationMD ftSubsea
Pecan Gap6,510-6,148
Austin Chalk7,302-6,940
Eagle FordEAGLEFORD7,597-7,235
False Buda8,109-7,747
Buda8,149-7,787
Georgetown8,248-7,886

Perforations

Perforated and open-hole intervals.

FromToType
7,5627,597Perforated
8,1508,228Perforated
8,2289,445Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
9.6253,52512.251,320 S
2.3758,190——
5.58,4308.75475 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
00Aug 17, 2007Oct 3, 1995Yes
00Jan 8, 1996Oct 3, 1995Yes
00Dec 14, 1995——
00Jan 8, 1993Dec 9, 1992Yes
00Dec 15, 1992Oct 18, 1983—
00Jan 12, 1984Oct 18, 1983—

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/04131010, documented in the API reference.