WELL · 42-059-35876 · DISTRICT 7

Isenhower John D. #9

Plugged

Callahan County · Callahan County Regular field  · Vertical

Isenhower John D. #9 (API 42-059-35876) is a plugged well in Callahan County, plugged February 7, 2026, last operated by Clausen A. G..

The RRC has issued one drilling permit, issued April 6, 1988, permitted to 600 ft.

It was permitted by Riffe, K. B. and has since transferred to Clausen A. G. on the wellbore schedule.

Completion filings report 2 formation tops, including Cook Sand, Lower Cook Sand.

Its lease has reported 8.24K barrels of oil and 37 mcf of gas since January 1993, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.

Operator of record

Clausen A. G.

Permitted by Riffe, K. B.; the EWA schedule now lists a different operator.

Cross Plains, TX · P-5 Y, filed Dec 4, 2025 · 4 permits on file · (325) 260-6525

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleClausen A. G.
Production reportsClausen, A. G.through Apr 2026
Latest permitRiffe, K. B.Apr 6, 1988

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

600
total depth, ft
1
permits on file
Apr 6, 1988
last permit issued
May 26, 1988
completed
8.24K
cumulative oil, bbl
37
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
May 26, 1988
Shut in
—
Plugged
Feb 7, 2026

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 7 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Isenhower, John D. O-8-450Callahan County RegularClausen, A. G.78.24K37Jan 1993 – Jul 2026

Oil, barrels lease total

Last 12 months 245 · prior 12 580(-58%)

050100202420252026

Chain of custody

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

  1. 1Riffe Drilling Co.Jan 1993 → Jun 1993
  2. 2Hounshell, BillAug 1993 → Mar 1995
  3. 3J R InvestmentsApr 1995 → Aug 2003
  4. 4Rhyne, J.V.Sep 2003 → Nov 2012
  5. 5Clausen, A. G.Sep 2016 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
344724-99DrillRiffe, K. B.Apr 4, 1988Apr 6, 1988—600

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-8-450————

Formation tops

As filed on W-2/G-1. Download CSV →

FormationMD ft
Cook Sand436
Lower Cook Sand436

Perforations

Perforated and open-hole intervals.

FromToType
436442Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
4.54926.7565 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 28, 2001Jun 12, 2001—
00Jun 6, 1989May 5, 1989Yes
00May 19, 1989——

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

355
bbl, last 12 reported months
32K
bbl, all reported
Feb 2025
reported through
UICKindStatusPermitted bbl/dMax psiZone ft
000090522H-1 InjectionPlugged Feb 12, 2026150200436–442

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

Last 12 months 355 · prior 12 0

020406020242025

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/05935876, documented in the API reference.