WELL · 42-329-40242 · DISTRICT 8
Sarah Ann #3819LS
Midland County · Spraberry (Trend Area) field · Horizontal
Sarah Ann #3819LS (API 42-329-40242) is a plugged horizontal well in Midland County, plugged October 7, 2025, last operated by Cog Operating LLC.
The RRC has issued one drilling permit, issued May 11, 2015, permitted to 12,000 ft.
It was permitted by Rsp Permian, LLC and has since transferred to Cog Operating LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 2.05M barrels of oil and 3.23M mcf of gas since April 2011, last reporting in July 2026. The lease carries 18 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by RSP Permian, LLC; 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 | RSP Permian, LLCMay 11, 2015 |
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
- 1
- permits on file
- May 11, 2015
- last permit issued
- May 9, 2025
- completed
- 2.05M
- cumulative oil, bbl
- 3.23M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 9, 2025
- Shut in
- —
- Plugged
- Oct 7, 2025
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 18 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sarah Ann O-10-41440 | Spraberry (Trend Area) | COG Operating LLC | 18 | 2.05M | 3.23M | Apr 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 24,157 · prior 12 63,126(-62%)
Gas, mcf lease total
Last 12 months 49,924 · prior 12 130,394(-62%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1RSP Permian, LLCMay 2011 → Jul 2018
- 2COG Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 806350-99 | Drill | RSP Permian, LLC | May 7, 2015 | May 11, 2015 | Jul 7, 2015 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 9, 2025 | Sarah Ann O-10-41440 | Spraberry (Trend Area) | COG Operating LLC | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,952 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,010 | 1,942 |
| Yates | 3,024 | -72 |
| Seven Rivers | 3,429 | -477 |
| Queen | 4,239 | -1,287 |
| Grayburg | 4,479 | -1,527 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,771 | -1,819 |
| Clear ForkCLEARFORK | 7,440 | -4,488 |
| Spraberry | 8,465 | -5,513 |
| Glorieta | — | — |
| SpraberrySPRABERRY UPPER-DEAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,489 | 13,841 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,616 | 17.5 | 1,100 S |
| 9.625 | 8,404 | 12.25 | 610 S |
| 5.5 | 14,050 | 8.5 | 1,100 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 | Jul 23, 2025 | Jul 8, 2025 | — |
| 00 | Jul 21, 2016 | Jun 16, 2016 | Yes |
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 42-329-40242 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-40242 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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/32940242, documented in the API reference.