WELL · 42-039-33109 · DISTRICT 3
Charles Duke et al Unit No. 1 #1
Brazoria County · Chocolate Bayou ( Frio Upper) field · Vertical
Charles Duke ET AL Unit NO. 1 #1 (API 42-039-33109) is a plugged well in Brazoria County, plugged June 10, 2015, last operated by Sandalwood Exploration L.P..
The RRC has issued one drilling permit (amended once), issued April 26, 2012, permitted to 9,500 ft.
Completion filings report 3 formation tops, including Het Marker, Frio, Alibel.
Its lease has reported 56K barrels of oil and 86.3K mcf of gas since July 2012, last reporting in August 2015.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 16, 2025
- Permits on file
- 118
- Phone
- (713) 759-6095
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sandalwood Exploration L.P. |
| Production reports | Sandalwood Exploration, L.P.through Oct 2014 |
| Latest permit | Sandalwood Exploration, L.P.Apr 26, 2012 |
- 9,500
- total depth, ft
- 2
- permits on file
- Apr 26, 2012
- last permit issued
- Jul 3, 2012
- completed
- 56K
- cumulative oil, bbl
- 86.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2012 THROUGH Aug 2015
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 3, 2012
- Shut in
- —
- Plugged
- Jun 10, 2015
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 |
|---|---|---|---|---|---|---|
| Charles Duke et al Unit No. 1 O-3-26019 | Chocolate Bayou ( Frio Upper) | Sandalwood Exploration, L.P. | 1 | 56K | 86.3K | Jul 2012 – Aug 2015 |
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.
- 1Sandalwood Exploration, L.P.Aug 2012 → Oct 2014
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 738223-98 | Drill | Sandalwood Exploration, L.P. | Aug 9, 2012 | Apr 26, 2012 | May 12, 2012 | 9,500 |
| 738223-99 | Drill | Sandalwood Exploration, L.P. | Apr 13, 2012 | Apr 26, 2012 | May 12, 2012 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-26019 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 27 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Het Marker | 7,555 | -7,528 |
| Frio | 8,650 | -8,623 |
| Alibel | 9,405 | -9,378 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,810 | 8,820 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,462 | 12.25 | 610 S |
| 5.5 | 9,472 | 8.75 | 245 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, 2013 | Aug 28, 2012 | 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 42-039-33109 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-039-33109 → 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/03933109, documented in the API reference.