TEXAS · WELLS · PARKER COUNTY · API 42-367-00229 · DISTRICT 6E
C. Holbrook A #1
Parker County · Springtown (Caddo) field · Vertical
C. Holbrook A #1 (API 42-367-00229) is a plugged well in Parker County, plugged February 21, 2025, last operated by Grayrock Energy II LLC.
The RRC has issued one drilling permit, issued June 2, 1983, permitted to 5,960 ft.
It was permitted by Enserch Exploration, Inc and has since transferred to Grayrock Energy II LLC on the wellbore schedule.
Completion filings report one formation top, including Caddo.
Its 2 leases have reported 102 barrels of oil and 209K mcf of gas since January 1993, with no volume in the three years through April 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Enserch Exploration, Inc; the EWA schedule now lists a different operator.
- Based in
- Fort Worth, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 16, 2025
- Phone
- (214) 234-9115
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Grayrock Energy II LLC |
| Production reports | Eagleridge Operating, LLCthrough Jul 2020 |
| Latest permit | Enserch Exploration, IncJun 2, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,960
- total depth, ft
- 1
- permits on file
- Jun 2, 1983
- last permit issued
- May 20, 1983
- completed
- 102
- cumulative oil, bbl
- 209K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2020
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 20, 1983
- Shut in
- —
- Plugged
- Feb 21, 2025
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 |
|---|---|---|---|---|---|---|
| Holbrooks "A" G-13-29036 | Boonsville (Bend Congl., Gas) | Eagleridge Operating, LLC | 1 | 102 | 209K | Jan 1993 – Jul 2020 |
| C. Holbrook "A" O-8-19812 | Springtown (Caddo) | Grayrock Energy II, LLC | 1 | 0 | 0 | Jan 1993 – — |
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.
- 1EP Operating Limited PartnershipJan 1993 → Feb 1995
- 2Enserch Exploration, IncMar 1995 → Dec 1997
- 3Merit Energy CompanyJan 1998 → Sep 2019
- 4Eagleridge Operating, LLCOct 2019 → Jul 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 197099-99 | Recompletion | Enserch Exploration, Inc | Jun 2, 1983 | Jun 2, 1983 | — | 5,960 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 20, 1983 | C. Holbrook A O-8-19812 | Springtown (Caddo) | Grayrock Energy II LLC | Plugged | — |
| May 20, 1983 | C. Holbrook A O-8-19812 | Springtown (Caddo) | Grayrock Energy II LLC | Plugged | — |
| — | Holbrooks A G-13-29036 | Boonsville (Bend Congl. Gas) | Eagleridge Operating LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 978 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,787 | 3,789 | Perforated |
| 3,787 | 3,889 | Perforated |
| 3,798 | 3,804 | Perforated |
| 3,828 | 3,842 | Perforated |
| 3,860 | 3,866 | Perforated |
| 3,876 | 3,889 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 429 | 13.75 | 365 S |
| 2.375 | 3,928 | — | — |
| 5.5 | 5,850 | 8.75 | 406 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Dec 8, 1986 | Jan 9, 1986 | Yes |
| 00 | Sep 25, 1986 | Jun 7, 1983 | — |
| 00 | Jan 12, 1984 | Jun 7, 1983 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-367-00229 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-367-00229 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/36700229, documented in the API reference.