TEXAS · WELLS · YOAKUM COUNTY · WILLARD UNIT LEASE · API 42-501-35461 · DISTRICT 7B
Willard Unit #31D
Yoakum County · Wasson field · Injection · Directional
Willard Unit #31D (API 42-501-35461) is a well in Yoakum County operated by Oxy USA Wtp LP, completed July 6, 2026 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued September 4, 2007, permitted to 5,462 ft.
Completion filings report 8 formation tops, including Rustler, Tansill, Yates, Seven Rivers.
Its lease has reported 65.9M barrels of oil and 196M mcf of gas since the record begins in January 1993, last reporting volume in August 2026. The lease carries 876 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 7.48K barrels injected in the 12 months reported through September 2025.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Oct 21, 2026
- Permits on file
- 2,289
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | OXY USA WTP LP |
| Production reports | OXY USA WTP LPthrough Aug 2026 |
| Latest permit | OXY USA WTP LPSep 4, 2007 |
- 5,462
- total depth, ft
- 1
- permits on file
- Sep 4, 2007
- last permit issued
- Jul 6, 2026
- completed
- 65.9M
- cumulative oil, bbl
- 196M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 6, 2026
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 876 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Willard Unit O-11-19308 | Wasson | OXY USA WTP LP | 876 | 65.9M | 196M | by Jan 1993 – Aug 2026 |
Oil, barrels lease total
Last 12 months 1,562,491 · prior 12 1,580,010(-1%)
Gas, mcf lease total
Last 12 months 2,473,797 · prior 12 2,327,559(+6%)
Wells named Willard Unit
OXY USA WTP LP'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.
- 1Arco Oil & Gas Co.Jan 1993 → May 1994
- 2Arco PermianJun 1994 → Dec 2001
- 3BP America Production CompanyJan 2002 → Apr 2003
- 4OXY USA WTP LPMay 2003 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 645320-99 | Drill | OXY USA WTP LP | Aug 30, 2007 | Sep 4, 2007 | Sep 23, 2007 | 5,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 6, 2026 | Willard Unit O-11-19308 | Wasson | OXY USA WTP LP | Injection | 5,462 |
Formation tops
As filed on W-2/G-1. Subsea from 3,594 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,190 | 1,404 |
| Tansill | 2,864 | 730 |
| Yates | 3,004 | 590 |
| Yates | 3,006 | 588 |
| Seven Rivers | 3,268 | 326 |
| Queen | 3,796 | -202 |
| Grayburg | 4,176 | -582 |
| Grayburg | 4,184 | -590 |
| San Andres | 4,440 | -846 |
| AN Andres | 4,443 | -849 |
| San Andres | 4,449 | -855 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,987 | 5,165 | Perforated |
| 4,997 | 5,155 | Perforated |
| 5,163 | 5,175 | Perforated |
| 5,163 | 5,402 | Perforated |
| 5,250 | 5,316 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 40 | 26 | 130 S |
| 8.625 | 2,210 | 12.25 | 1,000 S |
| 5.5 | 5,474 | 7.875 | 1,600 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 | Sep 29, 2026 | Aug 17, 2026 | — |
| 00 | Mar 31, 2025 | Jun 12, 2024 | — |
| 00 | Mar 13, 2023 | Sep 19, 2022 | — |
| 00 | Jun 16, 2008 | Feb 4, 2008 | Yes |
| 00 | May 19, 2008 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 23, 2008. Density, Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Rustler, Tansill, Yates, Seven Rivers, Queen, Grayburg, San Andres, An Andres | TIFF | 200 to 5,472 | Sep 23, 2008run Oct 2, 2007 | 1.70 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-501-35461 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-501-35461 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 7.48K
- bbl, last 12 reported months
- 26.2K
- bbl, all reported
- Sep 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000098430 | H-1 Injection | Active | 5,000 | 2,300 | 4,600–5,800 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 7,481 · prior 12 0
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/50135461, documented in the API reference.