WELL · 42-503-36351 · DISTRICT 9
Harmon C.F. 135 #21
Young County · Young County Regular field · Vertical
Harmon C.F. 135 #21 (API 42-503-36351) is a plugged well in Young County, plugged September 26, 2022, last operated by Karst Incorporated.
The RRC has issued one drilling permit, issued October 5, 1982, permitted to 650 ft.
It was permitted by Rico Oil Company and has since transferred to Karst Incorporated on the wellbore schedule.
Its lease has reported 34.9K barrels of oil and 21 mcf of gas since January 1993, last reporting in July 2026. The lease carries 20 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Rico Oil Company; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Oct 4, 2025 · (817) 738-3729
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Karst Incorporated |
| Production reports | Karst Incorporatedthrough May 2022 |
| Latest permit | Rico Oil CompanyOct 5, 1982 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 650
- total depth, ft
- 1
- permits on file
- Oct 5, 1982
- last permit issued
- Oct 8, 1982
- completed
- 34.9K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 8, 1982
- Shut in
- —
- Plugged
- Sep 26, 2022
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 20 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Harmon, C.F. "135" O-13-22042 | Young County Regular | Karst Incorporated | 20 | 34.9K | 21 | Jan 1993 – 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.
- 1Rico Oil CompanyJan 1993 → May 1994
- 2Little Drop Oil CompanyJun 1994 → Jun 1998
- 3Shanks, BobJul 1998 → Aug 1999
- 4Subsurface Energy Corp.Sep 1999 → Nov 2001
- 5Rockwood Resources IncDec 2001 → Oct 2009
- 6Karst IncorporatedMay 2010 → May 2022
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 173534-99 | Drill | Rico Oil Company | Oct 5, 1982 | Oct 5, 1982 | — | 650 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-22042 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 494 | 500 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 2.375 | 485 | — | — |
| 4.5 | 530 | 6.75 | 110 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 | Jan 12, 1984 | Nov 2, 1982 | — |
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 42-503-36351 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-503-36351 → 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.
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/50336351, documented in the API reference.