WELL · 42-329-40000 · DISTRICT 8
Isbell Horizontal Unit #109LS
Midland County · Spraberry (Trend Area) field · Producing · Horizontal
Isbell Horizontal Unit #109LS (API 42-329-40000) is a horizontal well in Midland County operated by Winn Operating LLC, completed May 9, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued March 17, 2015, permitted to 12,000 ft.
It was permitted by Rsp Permian, LLC and has since transferred to Winn Operating LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 2.25M barrels of oil and 5.45M mcf of gas since April 2015, last reporting in July 2026. The lease carries 13 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.
Kilgore, TX · P-5 Y, filed Oct 4, 2025 · 1 permits on file · (281) 783-8866
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Winn Operating LLC |
| Production reports | Winn Operating, LLCthrough Apr 2026 |
| Latest permit | High Sky Partners LLCMar 17, 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
- 3
- permits on file
- Mar 17, 2015
- last permit issued
- May 9, 2016
- completed
- 2.25M
- cumulative oil, bbl
- 5.45M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 9, 2016
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Isbell Horizontal Unit O-10-46986 | Spraberry (Trend Area) | Winn Operating, LLC | 13 | 2.25M | 5.45M | Apr 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 68,552 · prior 12 84,029(-18%)
Gas, mcf lease total
Last 12 months 477,055 · prior 12 480,806(-1%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1High Sky Partners LLCApr 2015 → Oct 2015
- 2RSP Permian, LLCNov 2015 → Jul 2018
- 3COG Operating LLCAug 2018 → Jan 2023
- 4Winn Operating, LLCFeb 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 801712-97 | Drill | RSP Permian, LLC | Sep 14, 2016 | Mar 17, 2015 | Nov 6, 2015 | 12,000 |
| 801712-98 | Drill | High Sky Partners LLC | Jul 29, 2015 | Mar 17, 2015 | — | 12,000 |
| 801712-99 | Drill | High Sky Partners LLC | Dec 14, 2014 | Mar 17, 2015 | Nov 6, 2015 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-46986 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,797 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,011 | 1,786 |
| Yates | 2,767 | 30 |
| Seven Rivers | 2,979 | -182 |
| Queen | 3,750 | -953 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,560 | -1,763 |
| Clear ForkCLEARFORK | 6,854 | -4,057 |
| Spraberry | 7,738 | -4,941 |
| SpraberrySPRABERRY UPPER-DEAN | 8,554 | -5,757 |
| Glorieta | — | — |
| Grayburg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,039 | 13,556 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,564 | 17.5 | 1,100 S |
| 9.625 | 8,265 | 12.25 | 680 S |
| 5.5 | 13,648 | 8.5 | 1,135 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 | Sep 30, 2016 | Aug 11, 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 42-329-40000 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-40000 → 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/32940000, documented in the API reference.