WELL · 42-115-31898 · DISTRICT 8
Koger '42' #1
Dawson County · Horizontal
Koger '42' #1 (API 42-115-31898) is a plugged horizontal well in Dawson County, plugged December 16, 1983, last operated by Endeavor Energy Resources L.P..
The RRC has issued 3 drilling permits (amended twice) between 1983 and 2009, permitted to 14,040 ft.
Completion filings report 8 formation tops, including Glorieta, Spraberry, Dean, Pennsylvanian.
Its 2 leases have reported 12.8K barrels of oil and 341 mcf of gas since December 2007, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Endeavor Energy Resources L.P.
Midland, TX · P-5 Y, filed Apr 4, 2026 · 6,190 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Endeavor Energy Resources L.P.Nov 30, 2009 |
- 14,040
- total depth, ft
- 5
- permits on file
- Nov 30, 2009
- last permit issued
- —
- completed
- 12.8K
- cumulative oil, bbl
- 341
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- Dec 16, 1983
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 2 leases 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 |
|---|---|---|---|---|---|---|
| Koger "42" O-10-43764 | Spraberry (Trend Area) | Diamondback E&P LLC | 2 | 12.3K | 341 | Jan 2010 – Jul 2026 |
| Koger "42" O-11-69437 | Tex-Hamon (Mississippian, Lower) | Endeavor Energy Resources L.P. | 1 | 486 | 0 | Dec 2007 – Mar 2014 |
Oil, barrels lease total
Last 12 months 371 · prior 12 429(-14%)
Gas, mcf lease total
Last 12 months 8 · prior 12 100(-92%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Endeavor Energy Resources L.P.Dec 2007 → Dec 2024
- 2Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 687971-98 | Recompletion | Endeavor Energy Resources L.P. | Jan 28, 2014 | Nov 30, 2009 | Apr 15, 2009 | 14,040 |
| 687971-99 | Recompletion | Endeavor Energy Resources L.P. | Nov 25, 2009 | Nov 30, 2009 | Apr 15, 2009 | 12,000 |
| 637893-98 | Reenter | Endeavor Energy Resources L.P. | May 4, 2007 | May 4, 2007 | May 27, 2007 | 12,000 |
| 637893-99 | Reenter | Endeavor Energy Resources L.P. | Apr 26, 2007 | May 4, 2007 | May 27, 2007 | 12,000 |
| 219864-99 | Drill | Harper, Wayne | Nov 1, 1983 | Nov 4, 1983 | Nov 17, 1983 | 11,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-69437 | — | — | — | — |
| — | — O-10-43764 | — | — | — | — |
| — | — O-10-43764 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,790 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Glorieta | 4,514 | -1,724 |
| Spraberry | 7,382 | -4,592 |
| Dean | 8,785 | -5,995 |
| PennsylvanianPENN LIME | 9,958 | -7,168 |
| Pennlime | 9,958 | -7,168 |
| U. Miss. Lime | 10,602 | -7,812 |
| MississippianUPPER MISS LIME | 10,602 | -7,812 |
| WoodfordWOODFORD SHALE | 11,405 | -8,615 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,526 | 10,834 | Perforated |
| 11,480 | 13,880 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 318 | 17 | 350 S |
| 13.375 | 318 | 17.5 | 350 S |
| 8.625 | 4,145 | 11 | 800 S |
| 8.625 | 4,150 | 11 | 800 S |
| 4.5 | 10,543 | 7.875 | 520 S |
| 7 | 11,400 | 7.875 | 182 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 | May 14, 2015 | Mar 21, 2013 | Yes |
| 00 | Mar 10, 2014 | Mar 21, 2013 | Yes |
| 00 | Dec 28, 2009 | Jun 18, 2008 | Yes |
| 00 | Nov 2, 2009 | — | — |
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 42-115-31898 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-31898 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/11531898, documented in the API reference.