TEXAS · WELLS · YOAKUM COUNTY · CORNELL UNIT LEASE · API 42-501-31487 · DISTRICT 7B
Cornell Unit #3035
Yoakum County · Wasson field · Injection · Vertical
Cornell Unit #3035 (API 42-501-31487) is a well in Yoakum County operated by Hilcorp Energy Company, completed October 24, 2012 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued October 21, 1977, permitted to 5,250 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 Queens, Grayburg, San Andres.
Its lease has reported 20.3M barrels of oil and 35.4M mcf of gas since the record begins in January 1993, last reporting volume in April 2026. The lease carries 268 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 106K barrels injected in the 12 months reported through September 2025.
Operator of record
Permitted by Cornell Oil Co.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- Phone
- (713) 209-2400
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.Oct 21, 1977 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,250
- total depth, ft
- 1
- permits on file
- Oct 21, 1977
- last permit issued
- Oct 24, 2012
- completed
- 20.3M
- cumulative oil, bbl
- 35.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 24, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
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 | by Jan 1993 – Apr 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%)
Wells named Cornell Unit
Hilcorp Energy Company's other wells filed under this lease name in Yoakum County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain 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 |
|---|---|---|---|---|---|---|
| 10865-99 | Drill | Cornell Oil Co. | Oct 21, 1977 | Oct 21, 1977 | Nov 15, 1977 | 5,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 24, 2012 | Cornell Unit O-11-19453 | Wasson | Hilcorp Energy Company | Injection | 5,250 |
Formation tops
As filed on W-2/G-1. Subsea from 3,602 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queens | 3,690 | -88 |
| Grayburg | 4,352 | -750 |
| San Andres | 4,622 | -1,020 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,932 | 5,191 | Perforated |
| 4,934 | 5,184 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 375 | 12.25 | 300 S |
| 5.5 | 745 | 7.875 | 2,200 S |
| 5.5 | 5,245 | 7.875 | 230 S |
| 5.5 | 5,245 | 8.75 | 2,600 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 | Jul 9, 2014 | May 3, 2013 | — |
| 00 | May 30, 2014 | May 3, 2013 | — |
| 00 | Apr 30, 1992 | Apr 10, 1992 | — |
| 00 | Jun 20, 1986 | Jun 11, 1986 | — |
| 00 | Jan 12, 1984 | May 18, 1978 | — |
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 42-501-31487 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-31487 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 106K
- bbl, last 12 reported months
- 6.69M
- bbl, all reported
- Sep 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000028689 | H-1 Injection | Active | 2,000 | 2,150 | 4,300–5,500 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 105,917 · prior 12 142,040(-25%)
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/50131487, documented in the API reference.