WELL · 42-121-00221 · DISTRICT 9
Knox Estate #18W
Denton County · Bolivar South field · Vertical
Knox Estate #18W (API 42-121-00221) is a plugged well in Denton County, plugged December 12, 2025, last operated by Rowland Tank Truck Company.
The RRC has issued one drilling permit, issued August 8, 2014, permitted to 1,494 ft.
Completion filings report 3 formation tops, including Base Cretaceous (marker), Base Of Cretacious, Lower Johnson.
Its 2 leases have reported 18.8K barrels of oil and 16 mcf of gas since January 1993, last reporting in July 2026. The leases carry 22 wells, so these are lease totals, not this well alone.
Operator of record
Whitewright, TX · P-5 Y, filed Jul 4, 2026 · 3 permits on file · (903) 821-4266
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rowland Tank Truck Company |
| Production reports | Rowland Tank Truck Companythrough Oct 2025 |
| Latest permit | Rowland Tank Truck CompanyAug 8, 2014 |
- 1,494
- total depth, ft
- 1
- permits on file
- Aug 8, 2014
- last permit issued
- Nov 22, 2006
- completed
- 18.8K
- cumulative oil, bbl
- 16
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 22, 2006
- Shut in
- —
- Plugged
- Dec 12, 2025
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 2 leases this well is completed on; they carry 22 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Knox, Ray B., Unit O-13-2637 | Bolivar, South | Porter, John W. Oil, Inc. | 20 | 0 | 10 | Jan 1993 – Jul 2026 |
| Knox Estate O-13-30333 | Bolivar, South | Rowland Tank Truck Company | 2 | 18.8K | 6 | Jun 2004 – Jun 2026 |
Oil, barrels lease total
Last 12 months 239 · prior 12 328(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texcel Exploration, Inc.Jun 2004 → Aug 2005
- 2Rowland Tank Truck CompanyMay 2006 → Oct 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 784212-99 | Reenter | Rowland Tank Truck Company | Apr 8, 2014 | Aug 8, 2014 | Nov 15, 2006 | 1,494 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-2637 | — | — | — | — |
| — | — O-13-30333 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 634 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE OF CRETACEOUS | 1,175 | -541 |
| Base of Cretacious | 1,175 | -541 |
| Lower Johnson | 1,490 | -856 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,489 | 1,494 | Perforated |
| 1,489 | 1,494 | Open hole |
| — | 1,494 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10 | 44 | 12 | 20 S |
| 2.375 | 1,450 | — | — |
| 5 | 1,489 | — | 200 S |
| 7 | 1,494 | 9.5 | 200 S |
| 5.5 | 1,494 | 9.5 | 200 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 | Jul 1, 2022 | Apr 25, 2022 | — |
| 00 | Dec 11, 2014 | Aug 25, 2014 | — |
| 00 | Jan 12, 1984 | Feb 16, 1981 | — |
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 42-121-00221 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-121-00221 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 26.6K
- bbl, last 12 reported months
- 302K
- bbl, all reported
- Sep 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000096830 | H-1 Injection | Plugged Dec 22, 2025 | 100 | 742 | 1,489–1,494 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 26,605 · prior 12 26,180(+2%)
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/12100221, documented in the API reference.