TEXAS · WELLS · MARTIN COUNTY · JUDSON 21 LEASE · API 42-317-39326 · DISTRICT 7B
Judson 21 #3
Martin County · Spraberry (Trend Area) field · Producing · Vertical
- Fields on the latest permit · any of 4
- Cedar Flats (Miss.) · Paul Page (Atoka) · Petty 48 (Upper Strawn) · Spraberry (Trend Area)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Judson 21 #3 (API 42-317-39326) is a well in Martin County operated by Oxyrock Operating LLC, completed August 11, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 4, 2014, permitted to 11,657 ft.
It was permitted by Breitburn Operating L.P. and has since transferred to Oxyrock Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Grayburg, San Andres, Spraberry.
Its lease has reported 265K barrels of oil and 1.05M mcf of gas since July 2012, last reporting volume in April 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Breitburn Operating L.P.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 22, 2026
- Permits on file
- 392
- Phone
- (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Oxyrock Operating LLC |
| Production reports | Oxyrock Operating, LLCthrough Apr 2026 |
| Latest permit | Breitburn Operating L.P.Apr 4, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,657
- total depth, ft
- 1
- permits on file
- Apr 4, 2014
- last permit issued
- Aug 11, 2014
- completed
- 265K
- cumulative oil, bbl
- 1.05M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2012 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 11, 2014
- 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.
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Judson 21 O-10-43689 | Spraberry (Trend Area) | Oxyrock Operating, LLC | 4 | 265K | 1.05M | Jul 2012 – Apr 2026 |
Oil, barrels lease total
Last 12 months 14,226 · prior 12 14,403(-1%)
Gas, mcf lease total
Last 12 months 19,454 · prior 12 16,128(+21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Crownquest Operating, LLCJul 2012 → Jul 2024
- 2Breitburn Operating L.P.Dec 2013 → Mar 2018
- 3Birch Operations, Inc.Apr 2018 → Feb 2019
- 4Oxyrock Operating, LLCAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 781151-99 | Drill | Breitburn Operating L.P. | Mar 3, 2014 | Apr 4, 2014 | Jun 24, 2014 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 11, 2014 | Judson 21 O-10-43689 | Spraberry (Trend Area) | Oxyrock Operating LLC | Producing | 11,657 |
Formation tops
As filed on W-2/G-1. Subsea from 2,825 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,570 | 255 |
| Grayburg | 4,030 | -1,205 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,910 | -2,085 |
| Spraberry | 7,460 | -4,635 |
| Dean | 8,828 | -6,003 |
| Wolfcamp | 9,054 | -6,229 |
| Cisco | — | — |
| Pennsylvanian | — | — |
| Queen | — | — |
| Santa Rosa | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,016 | 11,125 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 358 | 17.5 | 400 S |
| 8.625 | 5,360 | 11 | 1,970 S |
| 5.5 | 11,657 | 7.875 | 1,050 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 | Dec 18, 2014 | Oct 3, 2014 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Jun 30, 2017. 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 POROSITYSpans San Andres, Spraberry, Dean, Wolfcamp | TIFF | 5,580 to 11,488 | Jun 30, 2017run Jul 19, 2014 | 0.97 |
"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 42-317-39326 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-39326 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/31739326, documented in the API reference.