TEXAS · WELLS · UPTON COUNTY · MANN51 LEASE · API 42-461-36920 · DISTRICT 6E
MANN51 #2
Upton County · Spraberry (Trend Area) field · Producing · Vertical
Mann51 #2 (API 42-461-36920) is a well in Upton County operated by Cog Operating LLC, completed January 19, 2012 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 2010 and 2012, permitted to 10,690 ft.
Completion filings report 4 formation tops, including T. Spraberry, T. Wolfcamp, T. Strawn, T. Bend.
Its lease has reported 53.5K barrels of oil and 279K mcf of gas since October 2010, last reporting volume in August 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- 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 Aug 2026 |
| Latest permit | COG Operating LLCFeb 27, 2012 |
- 10,690
- total depth, ft
- 2
- permits on file
- Feb 27, 2012
- last permit issued
- Jan 19, 2012
- completed
- 53.5K
- cumulative oil, bbl
- 279K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · DEC 2010 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 19, 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 AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| MANN51 O-9-17400 | Spraberry (Trend Area) | COG Operating LLC | 2 | 53.5K | 279K | Oct 2010 – Aug 2026 |
Gas, mcf lease total
Last 12 months 4,946 · prior 12 4,285(+15%)
Oil, barrels lease total
Last 12 months 402 · prior 12 371(+8%)
Wells named MANN51
COG Operating LLC's other wells filed under this lease name in Upton 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
Operator on the lease's P-4
Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.
| Operator | From | To |
|---|---|---|
| COG Operating LLC | Aug 29, 2011 | today |
Reporting production
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCDec 2010 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 733957-99 | Recompletion | COG Operating LLC | Feb 15, 2012 | Feb 27, 2012 | — | 10,690 |
| 700647-99 | Drill | COG Operating LLC | Aug 13, 2010 | Aug 17, 2010 | Sep 19, 2010 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 19, 2012 | MANN51 O-9-17400 | Spraberry (Trend Area) | COG Operating LLC | Producing | 10,690 |
Formation tops
As filed on W-2/G-1. Subsea from 2,551 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| T. Spraberry | 6,785 | -4,234 |
| T. Wolfcamp | 8,540 | -5,989 |
| T. Strawn | 9,920 | -7,369 |
| T. Bend | 10,190 | -7,639 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,370 | 9,800 | Perforated |
| 6,370 | 10,485 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 815 | 12.25 | 430 S |
| 5.5 | 10,690 | 7.875 | 1,115 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 10, 2013 | Feb 28, 2012 | — |
| 00 | Mar 8, 2013 | Nov 27, 2012 | Yes |
| 00 | Nov 29, 2011 | Mar 9, 2011 | — |
Well logs
1 log loaded from the RRC's log index, the latest received Nov 20, 2013. Neutron.
Click a log to get its files from the RRC (free account). It opens in a new tab on the RRC's log search for this well, which lists each file to view or download; the RRC has no address for a single file.
| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON POROSITYSpans T. Spraberry, T. Wolfcamp, T. Strawn, T. Bend | TIFF | 4,000 to 10,650 | Nov 20, 2013run Oct 8, 2010 | 3.22 |
"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.
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.
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 42-461-36920 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-36920 → 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/46136920, documented in the API reference.