WELL · 42-429-33735 · DISTRICT 7
Cook Heirs #1
Stephens County · Stephens County Regular field · Vertical
Cook Heirs #1 (API 42-429-33735) is a well in Stephens County operated by Delta Oil & Gas Company, completed August 30, 1983.
The RRC has issued 2 drilling permits between 1983 and 2010, permitted to 5,000 ft.
It was permitted by Delta Oil & Gas Ltd. and has since transferred to Delta Oil & Gas Company on the wellbore schedule.
Completion filings report 4 formation tops, including Strawn, Caddo, Big Saline, Duffer.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Delta Oil & Gas Ltd.; the EWA schedule now lists a different operator.
Breckenridge, TX · P-5 Y, filed Dec 6, 2002 · 359 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Delta Oil & Gas Company |
| Production reports | Delta Oil & Gas Ltd.through Apr 2026 |
| Latest permit | Delta Oil & Gas Ltd.Oct 29, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,000
- total depth, ft
- 2
- permits on file
- Oct 29, 2010
- last permit issued
- Aug 30, 1983
- completed
- 0
- cumulative oil, bbl
- 284K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 30, 1983
- 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 2 leases 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 Heirs G-8-111658 | Caddo, North (Duffer) | Delta Oil & Gas Ltd. | 1 | 0 | 136K | Jan 1993 – Jul 2026 |
| Cook Heirs G-8-259342 | Stephens County Regular (Gas) | Delta Oil & Gas Ltd. | 1 | 0 | 148K | Nov 2010 – Jul 2026 |
Gas, mcf lease total
Last 12 months 11,229 · prior 12 9,284(+21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Delta Oil & Gas CompanyJan 1993 → Apr 2003
- 2Delta Oil & Gas Ltd.May 2003 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 704233-99 | Recompletion | Delta Oil & Gas Ltd. | Oct 25, 2010 | Oct 29, 2010 | Nov 1, 2010 | 3,620 |
| 201553-99 | Drill | Delta Oil & Gas Company | Jul 14, 1983 | Jul 14, 1983 | Jul 29, 1983 | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-8-111658 | — | — | — | — |
| — | — G-8-259342 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,311 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Strawn | 2,320 | -1,009 |
| Caddo | 3,220 | -1,909 |
| Caddo | 3,223 | -1,912 |
| Big Saline | 3,720 | -2,409 |
| Duffer | 4,120 | -2,809 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,223 | 3,300 | Perforated |
| 4,120 | 4,220 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 120 | 12.25 | 100 S |
| 2.375 | 4,100 | — | — |
| 4.5 | 4,250 | 7.875 | 320 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 | Mar 29, 2011 | Nov 18, 2010 | Yes |
| 00 | Aug 24, 1984 | Jun 28, 1984 | — |
| 00 | Aug 4, 1984 | Jun 28, 1984 | — |
| 00 | Apr 18, 1984 | Mar 26, 1984 | — |
| 00 | Apr 15, 1984 | Mar 26, 1984 | — |
| 00 | Jan 12, 1984 | Nov 2, 1983 | — |
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 42-429-33735 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-429-33735 → 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/42933735, documented in the API reference.