WELL · 42-461-35887 · DISTRICT 7
Kathryn #4810
Upton County · Jar (Pennsylvanian) field · Vertical
Kathryn #4810 (API 42-461-35887) is a well in Upton County operated by ST. Mary Land & Exploration CO., completed March 6, 2009.
The RRC has issued one drilling permit (amended once), issued July 10, 2008, permitted to 12,000 ft.
Completion filings report 5 formation tops, including San Andres, Clear Fork, Spraberry, Wolfcamp.
Its 2 leases have reported 737K barrels of oil and 2.29M mcf of gas since February 2005, last reporting in July 2026. The leases carry 16 wells, so these are lease totals, not this well alone.
Operator of record
St. Mary Land & Exploration Co.
- Based in
- Denver, CO
- P-5 status
- Inactive (I)
- P-5 last filed
- Oct 2, 2009
- Permits on file
- 553
- Phone
- (303) 861-8140
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | St. Mary Land & Exploration Co. |
| Production reports | SM Energy Companythrough Apr 2026 |
| Latest permit | St. Mary Land & Exploration Co.Aug 20, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 2
- permits on file
- Aug 20, 2008
- last permit issued
- Mar 6, 2009
- completed
- 737K
- cumulative oil, bbl
- 2.29M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 6, 2009
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 16 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Kathryn O-9-15698 | Spraberry (Trend Area) | SM Energy Company | 15 | 737K | 2.28M | Feb 2005 – Jul 2026 |
| Kathryn O-9-16912 | Jar (Pennsylvanian) | St. Mary Land & Exploration Co. | 1 | 329 | 3.44K | Mar 2009 – Nov 2009 |
Oil, barrels lease total
Last 12 months 1,066 · prior 12 2,278(-53%)
Gas, mcf lease total
Last 12 months 1,502 · prior 12 17,935(-92%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum LPMar 2005 → Jan 2006
- 2St. Mary Land & Exploration Co.Feb 2006 → Jun 2010
- 3SM Energy CompanyJul 2010 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 662263-98 | Drill | St. Mary Land & Exploration Co. | Aug 4, 2008 | Aug 20, 2008 | Aug 5, 2009 | 12,000 |
| 662263-99 | Drill | St. Mary Land & Exploration Co. | May 16, 2008 | Jul 10, 2008 | Nov 29, 2008 | 10,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-15698 | — | — | — | — |
| — | — O-9-16912 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,884 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,912 | -2,028 |
| Clear ForkCLEARFORK | 7,066 | -4,182 |
| Spraberry | 7,748 | -4,864 |
| Wolfcamp | 9,103 | -6,219 |
| PennsylvanianPENN | 11,140 | -8,256 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,840 | 7,850 | Perforated |
| 7,960 | 7,970 | Perforated |
| 8,135 | 8,145 | Perforated |
| 8,280 | 8,290 | Perforated |
| 9,320 | 9,399 | Perforated |
| 9,450 | 9,470 | Perforated |
| 9,740 | 9,760 | Perforated |
| 9,910 | 9,930 | Perforated |
| 10,100 | 10,120 | Perforated |
| 10,300 | 10,320 | Perforated |
| 11,140 | 11,150 | Perforated |
| 11,250 | 11,260 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 401 | 12.25 | 220 S |
| 5.5 | 11,435 | 7.875 | 1,395 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 16, 2023 | Mar 6, 2023 | — |
| 00 | Jan 27, 2010 | Oct 19, 2009 | Yes |
| 00 | Nov 2, 2009 | May 8, 2009 | Yes |
| 00 | Jun 23, 2009 | May 8, 2009 | Yes |
| 00 | May 20, 2009 | — | — |
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 42-461-35887 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-35887 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/46135887, documented in the API reference.