WELL · 42-501-31873 · DISTRICT 8
Cornell Unit #6378
Yoakum County · Wasson field · Vertical
Cornell Unit #6378 (API 42-501-31873) is a plugged well in Yoakum County, plugged May 6, 2019, last operated by Hilcorp Energy Company.
The RRC has issued one drilling permit, issued August 1, 1980, permitted to 5,400 ft.
It was permitted by Cornell Oil CO. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 3 formation tops, including Queen, Grayburg, San Andres.
Its lease has reported 20.3M barrels of oil and 35.4M mcf of gas since January 1993, last reporting in July 2026. The lease carries 268 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cornell Oil Co.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 26, 2026 · 3,454 permits on file · (713) 209-2411
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Cornell Oil Co.Aug 1, 1980 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,400
- total depth, ft
- 1
- permits on file
- Aug 1, 1980
- last permit issued
- Jun 8, 2011
- completed
- 20.3M
- cumulative oil, bbl
- 35.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 8, 2011
- Shut in
- —
- Plugged
- May 6, 2019
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 268 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cornell Unit O-11-19453 | Wasson | Hilcorp Energy Company | 268 | 20.3M | 35.4M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 486,391 · prior 12 408,638(+19%)
Gas, mcf lease total
Last 12 months 594,808 · prior 12 645,030(-8%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exxon Corp.Jan 1993 → Mar 2000
- 2Exxon Mobil CorporationApr 2000 → Jul 2000
- 3Cross Timbers Operating CompanyAug 2000 → May 2001
- 4XTO Energy Inc.Jun 2001 → Mar 2025
- 5Hilcorp Energy CompanyApr 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 89393-99 | Drill | Cornell Oil Co. | Aug 1, 1980 | Aug 1, 1980 | Aug 10, 1980 | 5,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-19453 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,591 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen | 3,666 | -75 |
| Grayburg | 4,343 | -752 |
| San Andres | 4,574 | -983 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,930 | 5,133 | Perforated |
| 4,930 | 5,184 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 408 | 12.25 | 350 S |
| 8.625 | 409 | 12.25 | 350 S |
| 2.875 | 5,307 | — | — |
| 5.5 | 5,350 | 7.875 | 1,150 S |
| 5.5 | — | — | 1,100 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 14, 2012 | Dec 16, 2011 | — |
| 00 | Oct 9, 1992 | Sep 11, 1992 | — |
| 00 | Oct 28, 1991 | Oct 2, 1991 | — |
| 00 | Oct 22, 1987 | Sep 28, 1987 | — |
| 00 | Oct 21, 1987 | Oct 27, 1980 | — |
| 00 | Jan 12, 1984 | Oct 27, 1980 | — |
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 42-501-31873 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-31873 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 128K
- bbl, last 12 reported months
- 9.13M
- bbl, all reported
- Sep 2019
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000054443 | H-1 Injection | Plugged May 17, 2019 | 2,000 | 2,150 | 4,300–5,500 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 127,685 · prior 12 705,306(-82%)
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/50131873, documented in the API reference.