TEXAS · WELLS · UPTON COUNTY · LESLEY LEASE · API 42-461-36812 · DISTRICT 6E
Lesley #4903
Upton County · Spraberry (Trend Area) field · Shut In · Vertical
Lesley #4903 (API 42-461-36812) is a well in Upton County operated by Diamondback E&P LLC, completed September 19, 2010 and listed as shut in on the RRC schedule, shut in December 1, 2023.
The RRC has issued one drilling permit, issued June 25, 2010, permitted to 10,210 ft.
It was permitted by Cog Operating LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 4 formation tops, including T. Clearfork, T. Spraberry, T. Dean, T. Wolfcamp.
Its lease has reported 103K barrels of oil and 248K mcf of gas since April 2010, with no volume in the three years through August 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,254
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Dec 2022 |
| Latest permit | COG Operating LLCJun 25, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,210
- total depth, ft
- 1
- permits on file
- Jun 25, 2010
- last permit issued
- Sep 19, 2010
- completed
- 103K
- cumulative oil, bbl
- 248K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · APR 2010 THROUGH DEC 2022
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 19, 2010
- Shut in
- Dec 1, 2023
- 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 |
|---|---|---|---|---|---|---|
| Lesley O-9-17180 | Spraberry (Trend Area) | Diamondback E&P LLC | 2 | 103K | 248K | Apr 2010 – Dec 2022 |
No volumes reported on these leases in the last three years.
Wells named Lesley
Diamondback E&P 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
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCApr 2010 → Jun 2018
- 2TRP Operating LLCJul 2018 → Dec 2022
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 698122-99 | Drill | COG Operating LLC | Jun 24, 2010 | Jun 25, 2010 | Jul 25, 2010 | 10,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 19, 2010 | Lesley O-9-17180 | Spraberry (Trend Area) | Diamondback E&P LLC | Shut In · shut in Dec 1, 2023 | 10,210 |
Formation tops
As filed on W-2/G-1. Subsea from 2,710 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| T. Clearfork | 6,160 | -3,450 |
| T. Spraberry | 6,995 | -4,285 |
| T. Dean | 8,290 | -5,580 |
| T. Wolfcamp | 8,425 | -5,715 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,554 | 9,960 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 825 | 12.25 | 400 S |
| 5.5 | 10,210 | 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 | Feb 7, 2011 | Sep 24, 2010 | Yes |
| 00 | Jan 20, 2011 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Aug 19, 2013. 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 T. Clearfork, T. Spraberry, T. Dean, T. Wolfcamp | TIFF | 4,000 to 10,138 | Aug 19, 2013run Aug 20, 2010 | 3.34 |
"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 42-461-36812 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-36812 → 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/46136812, documented in the API reference.