WELL · 42-057-31019 · DISTRICT 2
Cook J. G. #12
Calhoun County · Heyser (5400 #2) field · Vertical
Cook J. G. #12 (API 42-057-31019) is a well in Calhoun County operated by Barnhart CO., completed October 12, 1980.
The RRC has issued 3 drilling permits (amended once) between 1980 and 1989, permitted to 6,230 ft.
Completion filings report 4 formation tops, including 1st Heyser, 2nd Heyser, 3rd Heyser, Heyser.
Its lease has reported 132K barrels of oil and 138K mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Oct 7, 2022 · 35 permits on file · (281) 469-4843
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Barnhart Co. |
| Production reports | Baylor Operating, LLCthrough Oct 2019 |
| Latest permit | Barnhart Co.Oct 25, 1989 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,230
- total depth, ft
- 4
- permits on file
- Oct 25, 1989
- last permit issued
- Oct 12, 1980
- completed
- 132K
- cumulative oil, bbl
- 138K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 12, 1980
- Shut in
- —
- Plugged
- —
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cook, J.G. O-2-7499 | Heyser | Baylor Operating, LLC | 2 | 132K | 138K | 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.
- 1Barnhart Co.Jan 1993 → Nov 2002
- 2Xeric Oil & Gas CorporationDec 2002 → Jun 2005
- 3XOG Operating LLCJul 2005 → Mar 2016
- 4Baylor Operating, LLCAug 2017 → Oct 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 365498-99 | Recompletion | Barnhart Co. | Oct 23, 1989 | Oct 25, 1989 | — | 5,660 |
| 348423-98 | Recompletion | Barnhart Co. | Jun 30, 1988 | Jun 30, 1988 | — | 6,230 |
| 348423-99 | Recompletion | Barnhart Co. | Jun 30, 1988 | Jun 30, 1988 | — | 6,230 |
| 91091-99 | Drill | Tenneco Oil Co. | Aug 29, 1980 | Aug 29, 1980 | — | 6,150 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-7499 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 69 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| 1ST Heyser | 5,259 | -5,190 |
| 2ND Heyser | 5,303 | -5,234 |
| 3RD Heyser | 5,356 | -5,287 |
| Heyser | 5,500 | -5,431 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,328 | 5,334 | Perforated |
| 5,374 | 5,408 | Perforated |
| 5,582 | 5,586 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 970 | 12.25 | 355 S |
| 9.625 | 971 | 12.25 | 355 S |
| 2.375 | 5,613 | — | — |
| 5.5 | 5,624 | 8.5 | 555 S |
| 5.5 | 5,660 | 8.5 | 555 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 11, 1990 | Nov 2, 1989 | Yes |
| 00 | Dec 28, 1989 | — | — |
| 00 | Sep 28, 1988 | Jul 8, 1988 | — |
| 00 | Sep 8, 1988 | — | — |
| 00 | Jan 12, 1984 | Nov 3, 1980 | — |
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 42-057-31019 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-057-31019 → 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/05731019, documented in the API reference.