WELL · 42-491-30423 · DISTRICT 1
Esi #1 - Knapek #1
Williamson County · Thrall field · Vertical
Esi #1 - Knapek #1 (API 42-491-30423) is a plugged well in Williamson County, plugged December 21, 2016, last operated by Black Jack Services L.L.C..
The RRC has issued one drilling permit, issued February 19, 2002, permitted to 1,100 ft.
It was permitted by Chart - X Corporation and has since transferred to Black Jack Services L.L.C. on the wellbore schedule.
Completion filings report 4 formation tops, including Pecan Gap, Taylor, Austin Chalk, Serpentine.
Its lease has reported 10 barrels of oil and 10 mcf of gas since August 2002, last reporting in July 2026.
Operator of record
Permitted by Chart - X Corporation; the EWA schedule now lists a different operator.
Bastrop, TX · P-5 Y, filed May 29, 2025 · 8 permits on file · (512) 468-8858
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Black Jack Services L.L.C. |
| Production reports | Panamerican Operating Incthrough Aug 2002 |
| Latest permit | Chart - X CorporationFeb 19, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,100
- total depth, ft
- 1
- permits on file
- Feb 19, 2002
- last permit issued
- Aug 5, 2002
- completed
- 10
- cumulative oil, bbl
- 10
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2002 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 5, 2002
- Shut in
- —
- Plugged
- Dec 21, 2016
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Esi #1 - Knapek O-1-14455 | Thrall | Black Jack Services, L.L.C. | 1 | 10 | 10 | Aug 2002 – 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.
- 1Panamerican Operating IncAug 2002 → Aug 2002
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 517676-99 | Drill | Chart - X Corporation | Feb 19, 2002 | Feb 19, 2002 | Mar 5, 2002 | 1,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-14455 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 534 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 669 | -135 |
| TaylorLOWER TAYLOR MORROW | 772 | -238 |
| Austin Chalk | 992 | -458 |
| Serpentine | 1,190 | -656 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 980 | 1,338 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 120 | 11 | 45 S |
| 4.5 | 1,303 | 7.875 | 250 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 | Sep 17, 2003 | Sep 5, 2003 | Yes |
| 00 | Sep 10, 2003 | — | — |
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 42-491-30423 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-491-30423 → 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/49130423, documented in the API reference.