WELL · 42-237-40411 · DISTRICT 9
Koin #1
Jack County · Dimock (Ellenburger) field · Producing · Vertical
Koin #1 (API 42-237-40411) is a well in Jack County operated by Delfin Operating LLC, completed January 28, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 18, 2015, permitted to 6,950 ft.
It was permitted by Choice Exploration, Inc. and has since transferred to Delfin Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Gunsight, Palo Pinto, Bryson, Caddo.
Its lease has reported 56K barrels of oil and 53.1K mcf of gas since January 2017, last reporting in July 2026.
Operator of record
Permitted by Choice Exploration, Inc.; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Mar 4, 2026 · 7 permits on file · (214) 926-4266
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Delfin Operating LLC |
| Production reports | Delfin Operating, LLCthrough Mar 2026 |
| Latest permit | Choice Exploration, Inc.Dec 18, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,950
- total depth, ft
- 1
- permits on file
- Dec 18, 2015
- last permit issued
- Jan 28, 2017
- completed
- 56K
- cumulative oil, bbl
- 53.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 28, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 |
|---|---|---|---|---|---|---|
| Koin O-13-33605 | Dimock (Ellenburger) | Delfin Operating, LLC | 1 | 56K | 53.1K | Jan 2017 – Jul 2026 |
Oil, barrels lease total
Last 12 months 4,647 · prior 12 5,194(-11%)
Gas, mcf lease total
Last 12 months 4,440 · prior 12 5,193(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Delfin Operating, LLCFeb 2017 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 812709-99 | Drill | Choice Exploration, Inc. | Dec 15, 2015 | Dec 18, 2015 | Jan 1, 2017 | 6,950 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-33605 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,160 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Gunsight | 1,016 | 144 |
| Palo Pinto | 2,030 | -870 |
| Bryson | 3,950 | -2,790 |
| Caddo | 5,655 | -4,495 |
| AtokaATOKA CONGLOMERATE | 5,860 | -4,700 |
| BendBEND CONGLOMERATE | 5,900 | -4,740 |
| Conglomerate | 5,925 | -4,765 |
| Marble Falls | 5,955 | -4,795 |
| BarnettBARNETT SHALE | 6,320 | -5,160 |
| Ellenburger | 6,718 | -5,558 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,719 | 6,733 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 419 | 12.25 | 275 S |
| 5.5 | 6,800 | 7.875 | 300 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 | Feb 22, 2017 | Feb 13, 2017 | Yes |
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 42-237-40411 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-237-40411 → 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/23740411, documented in the API reference.