WELL · 42-321-31145 · DISTRICT 3
Clark Unit #1 #2
Matagorda County · Chalmers (9250) field · Vertical
Clark Unit #1 #2 (API 42-321-31145) is a plugged well in Matagorda County, plugged February 2, 1993, last operated by Engelke R. H..
The RRC has issued 5 drilling permits (amended once) between 1981 and 1991, permitted to 9,800 ft.
Completion filings report 2 formation tops, including Miocene (undifferentiated), Frio.
Operator of record
- Based in
- San Antonio, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Mar 28, 2002
- Permits on file
- 221
- Phone
- (210) 342-9668
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Engelke R. H. |
| Production reports | none |
| Latest permit | Engelke, R. H.Sep 3, 1991 |
- 9,800
- total depth, ft
- 6
- permits on file
- Sep 3, 1991
- last permit issued
- Oct 12, 1981
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 1993
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 12, 1981
- Shut in
- —
- Plugged
- Feb 2, 1993
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Clark Unit 1 G-3-140648 | Chalmers (8700 Sand) | Engelke, R. H. | 1 | 0 | 0 | Jan 1993 – Feb 1993 |
| — O-3-19961 | — | — | 0 | 0 | 0 | — |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 391347-98 | Recompletion | Engelke, R. H. | Feb 10, 1992 | Sep 3, 1991 | Dec 11, 1991 | 9,628 |
| 391347-99 | Recompletion | Engelke, R. H. | Aug 28, 1991 | Sep 3, 1991 | — | 9,800 |
| 341186-99 | Recompletion | Engelke, R. H. | Jan 8, 1988 | Jan 11, 1988 | — | 9,628 |
| 324435-99 | Recompletion | Engelke, R. H. | Dec 16, 1986 | Dec 18, 1986 | — | 9,628 |
| 258426-99 | Recompletion | Engelke, R. H. | Nov 2, 1984 | Nov 21, 1984 | — | 9,628 |
| 128086-99 | Drill | Engelke, R. H. | Jul 31, 1981 | Jul 31, 1981 | Aug 10, 1981 | 9,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-140648 | — | — | — | — |
| — | — O-3-19961 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 74 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 1 | 73 |
| Frio | 4,900 | -4,826 |
| Frio | 6,790 | -6,716 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,750 | 8,755 | Perforated |
| 9,009 | 9,012 | Perforated |
| 9,180 | 9,186 | Perforated |
| 9,286 | 9,263 | Perforated |
| 9,311 | 9,314 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 984 | 13.75 | 625 S |
| — | 1,380 | 8.75 | 600 S |
| 2.375 | 9,212 | — | — |
| 5.5 | 9,585 | 8.75 | 670 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 9, 1992 | Feb 10, 1992 | Yes |
| 00 | Feb 27, 1992 | — | — |
| 00 | Feb 9, 1988 | Jan 8, 1987 | Yes |
| 00 | Feb 4, 1988 | — | — |
| 00 | Jan 6, 1987 | Sep 25, 1986 | Yes |
| 00 | Dec 22, 1986 | — | — |
| 00 | Dec 31, 1984 | Nov 26, 1984 | — |
| 00 | Dec 11, 1984 | — | — |
| 00 | Jan 12, 1984 | Apr 2, 1982 | — |
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 42-321-31145 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-31145 → 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/32131145, documented in the API reference.