WELL · 42-447-36143 · DISTRICT 7
Coker 1688 #4
Throckmorton County · Marshall N. (Caddo) field · NO Production · Vertical
Coker 1688 #4 (API 42-447-36143) is a well in Throckmorton County operated by Ashtola Exploration Company Inc., completed March 25, 2005 and listed as no production on the RRC schedule.
The RRC has issued one drilling permit, issued December 16, 2004, permitted to 4,800 ft.
Completion filings report 3 formation tops, including Caddo, Marble Falls, Mississippian.
Its lease has reported 3.77K barrels of oil and 1.44K mcf of gas since April 2005, last reporting in July 2026.
Operator of record
Ashtola Exploration Company Inc.
Amarillo, TX · P-5 Y, filed Oct 4, 2025 · 362 permits on file · (406) 446-1484
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ashtola Exploration Company Inc. |
| Production reports | Ashtola Exploration Company,inc.through Dec 2015 |
| Latest permit | Ashtola Exploration Company,inc.Dec 16, 2004 |
- 4,800
- total depth, ft
- 1
- permits on file
- Dec 16, 2004
- last permit issued
- Mar 25, 2005
- completed
- 3.77K
- cumulative oil, bbl
- 1.44K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 25, 2005
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
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 |
|---|---|---|---|---|---|---|
| Coker "1688" O-8-29579 | Marshall, N. (Caddo) | Ashtola Exploration Company,inc. | 1 | 3.77K | 1.44K | Apr 2005 – 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.
- 1Ashtola Exploration Company,inc.Apr 2005 → Dec 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 554781-99 | Drill | Ashtola Exploration Company,inc. | Dec 13, 2004 | Dec 16, 2004 | — | 4,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-29579 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,227 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Caddo | 3,858 | -2,631 |
| Marble Falls | 4,396 | -3,169 |
| MississippianMISSISSIPPI | 4,553 | -3,326 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,232 | 4,237 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 215 | 12.5 | 140 S |
| 5.5 | 4,576 | 7.875 | 150 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 2, 2005 | May 2, 2005 | Yes |
| 00 | Jul 5, 2005 | — | — |
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 42-447-36143 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-447-36143 → 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/44736143, documented in the API reference.