TEXAS · WELLS · UPTON COUNTY · MARY "A" LEASE · API 42-461-34892 · DISTRICT 6E
Mary A #4
Upton County · Spraberry (Trend Area) field · Vertical
Mary A #4 (API 42-461-34892) is a plugged well in Upton County, plugged April 28, 2017, last operated by Cog Operating LLC.
The RRC has issued one drilling permit, issued August 19, 2005, permitted to 10,800 ft.
It was permitted by Henry Petroleum LP and has since transferred to Cog Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including San Andres, Clear Fork, Spraberry, Dean.
Its lease has reported 181K barrels of oil and 486K mcf of gas since January 2005, last reporting volume in April 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Henry Petroleum LP; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | Henry Petroleum LPAug 19, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,800
- total depth, ft
- 1
- permits on file
- Aug 19, 2005
- last permit issued
- Aug 24, 2006
- completed
- 181K
- cumulative oil, bbl
- 486K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2005 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 24, 2006
- Shut in
- —
- Plugged
- Apr 28, 2017
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary "A" O-9-15822 | Spraberry (Trend Area) | COG Operating LLC | 3 | 181K | 486K | Jan 2005 – Apr 2026 |
Oil, barrels lease total
Last 12 months 6,554 · prior 12 7,708(-15%)
Gas, mcf lease total
Last 12 months 14,178 · prior 12 17,869(-21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum LPJan 2005 → Dec 2008
- 2COG Operating LLCJan 2009 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 604991-99 | Drill | Henry Petroleum LP | Aug 16, 2005 | Aug 19, 2005 | Sep 7, 2005 | 10,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 24, 2006 | Mary A O-9-15822 | Spraberry (Trend Area) | COG Operating LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,785 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,622 | -1,837 |
| Clear ForkCLEARFORK | 6,575 | -3,790 |
| Spraberry | 7,356 | -4,571 |
| Dean | 8,607 | -5,822 |
| Wolfcamp | 8,782 | -5,997 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,976 | 10,240 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 477 | 17.5 | 504 S |
| 8.625 | 5,050 | 11 | 300 S |
| 5.5 | 10,465 | 7.875 | 870 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 | Jan 26, 2007 | Aug 31, 2006 | — |
| 00 | Sep 27, 2006 | May 16, 2006 | Yes |
| 00 | Jun 5, 2006 | — | — |
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 42-461-34892 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-34892 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/46134892, documented in the API reference.