Petrora

WELL · 42-371-32469 · DISTRICT 8

Chalkley B #1

N

Pecos County · Lehn-Apco S. (Wichita-Albany) field  · Vertical

Chalkley B #1 (API 42-371-32469) is a well in Pecos County operated by Olsen Energy Inc., completed May 7, 2001.

The RRC has issued 4 drilling permits between 1978 and 1996, permitted to 4,838 ft.

It was permitted by Mbr Resources, Inc. and has since transferred to Olsen Energy Inc. on the wellbore schedule.

Completion filings report 9 formation tops, including Yates, Queen, Queens, Grayburg.

Its 5 leases have reported 17.9K barrels of oil and 139K mcf of gas since January 1993, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.

Operator of record

Olsen Energy Inc.

Permitted by MBR Resources, Inc.; the EWA schedule now lists a different operator.

Boerne, TX · P-5 Y, filed May 4, 2026 · 243 permits on file · (210) 834-4655

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleOlsen Energy Inc.
Production reportsOlsen Energy Inc.through Apr 2026
Latest permitMBR Resources, Inc.Jul 25, 1996

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

4,838
total depth, ft
4
permits on file
Jul 25, 1996
last permit issued
May 7, 2001
completed
17.9K
cumulative oil, bbl
139K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
May 7, 2001
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 5 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Chalkley "B" O-10-58181Lehn-Apco, S. (Wichita-Albany)Olsen Energy Inc.18.71K0Jun 2022 – Jul 2026
Chalkley "B" G-10-183317Lehn-Apco, S. (Wichita-Albany)Olsen Energy Inc.1054.4KMay 2001 – Dec 2023
Chalkley "B" O-10-35181Lehn-Apco, S. (Wichita-Albany)MBR Resources, Inc.165179.5KSep 1996 – Aug 2005
Chalkley -B- O-10-25349Lehn-Apco, South (Ellen)MBR Resources, Inc.18.15K4.72KJan 1993 – May 1997
Chalkley "B" O-10-33677Lehn-Apco, South (Queen)Pedco Resources Company1362100Jan 1993 – Oct 1993

Oil, barrels lease total

Last 12 months 1,907 · prior 12 2,241(-15%)

0100200300202420252026

Chain of custody

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

  1. 1Pedco Resources CompanyJan 1993 → Jan 1995
  2. 2MBR Resources, Inc.Feb 1995 → Mar 2006
  3. 3Unit Petroleum CompanyApr 2006 → Oct 2015
  4. 4Olsen Energy Inc.Jun 2018 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
450237-99RecompletionMBR Resources, Inc.Jul 11, 1996Jul 25, 1996Jul 25, 19964,838
412084-99OtherPedco Resources CompanyMay 24, 1993Jun 1, 1993Apr 5, 19934,838
405770-99RecompletionPedco Resources CompanyNov 6, 1992Nov 10, 1992Nov 10, 19924,700
17451-99DrillLovelady, Ike Inc.Feb 1, 1978Feb 1, 1978Feb 10, 19794,838

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-10-183317————
—— O-10-25349————
—— O-10-33677————
—— O-10-35181————
—— O-10-58181————

Formation tops

As filed on W-2/G-1. Subsea from 2,469 ft elevation.Download CSV →

FormationMD ftSubsea
Yates1,0051,464
Queen1,491978
Queens1,491978
Grayburg1,658811
Grayburg1,688781
San Andres1,844625
Glorieta2,495-26
GlorietaGLORIETTA2,495-26
Tubb3,217-748
Wichita-AlbanyWICHITA ALBANY3,606-1,137
Wichita-Albany3,606-1,137
Ellenburger4,721-2,252

Perforations

Perforated and open-hole intervals.

FromToType
1,5051,512Perforated
1,5051,564Perforated
1,5051,606Perforated
1,5421,545Perforated
1,5591,564Perforated
1,6021,624Perforated
4,3144,572Perforated
4,7284,738Open hole
4,7284,838Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
8.62545211250 S
5.54,7287.8751,300 S
2.3754,730——

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
00Jan 10, 2023Nov 11, 2022—
00Sep 10, 2001May 23, 2001—
00Jul 31, 2001——
00Feb 26, 1997Sep 9, 1996Yes
00Feb 18, 1997Jun 4, 1993—
00Jul 12, 1993Jun 4, 1993—
00Mar 9, 1993Dec 28, 1992Yes
00Feb 22, 1993Mar 14, 1979—
00Jan 12, 1984Mar 14, 1979—

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) and the University Lands library. 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/37132469, documented in the API reference.