TEXAS · WELLS · DUVAL COUNTY · DCR 81 LEASE · API 42-131-37663 · DISTRICT 04
DCR 81 #4
Duval County · D C R-79 field · Vertical
Dcr 81 #4 (API 42-131-37663) is a plugged well in Duval County, plugged December 22, 2015, last operated by Killam Oil CO. Ltd..
The RRC has issued one drilling permit (amended twice), issued January 15, 1993, permitted to 2,500 ft.
It was permitted by Tri-C Resources, Inc. and has since transferred to Killam Oil CO. Ltd. on the wellbore schedule.
Its lease has reported 19.7K barrels of oil and 7.25K mcf of gas since April 1993, last reporting in February 2016. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Tri-C Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Laredo, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 9, 2026
- Permits on file
- 837
- Phone
- (956) 724-7141
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Killam Oil Co. Ltd. |
| Production reports | Killam Oil Co., Ltd.through Oct 1996 |
| Latest permit | Tri-C Resources, Inc.Jan 15, 1993 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,500
- total depth, ft
- 3
- permits on file
- Jan 15, 1993
- last permit issued
- Feb 20, 1993
- completed
- 19.7K
- cumulative oil, bbl
- 7.25K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 1993 THROUGH Feb 2016
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 20, 1993
- Shut in
- —
- Plugged
- Dec 22, 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; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| DCR 81 O-4-12196 | D C R-79 | Killam Oil Co., Ltd. | 3 | 19.7K | 7.25K | Apr 1993 – Feb 2016 |
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.
- 1Tri-C Resources, Inc.Apr 1993 → Dec 1993
- 2Sonat Exploration Co. - HoustonJan 1994 → Feb 1996
- 3Killam Oil Co., Ltd.Mar 1996 → Oct 1996
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 408146-97 | Drill | Tri-C Resources, Inc. | Mar 8, 1993 | Jan 15, 1993 | Feb 11, 1993 | 2,500 |
| 408146-98 | Drill | Tri-C Resources, Inc. | Feb 9, 1993 | Jan 15, 1993 | — | 2,500 |
| 408146-99 | Drill | Tri-C Resources, Inc. | Jan 15, 1993 | Jan 15, 1993 | — | 1,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 20, 1993 | DCR 81 O-4-12196 | D C R-79 | Killam Oil Co. Ltd. | Plugged | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,302 | 1,306 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 298 | 12.25 | 200 S |
| 5.5 | 1,492 | 7.875 | 200 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 | Jul 1, 1993 | May 4, 1993 | Yes |
| 00 | May 12, 1993 | — | — |
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 42-131-37663 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-131-37663 → 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/13137663, documented in the API reference.