WELL · 42-173-35651 · DISTRICT 8
Sfo #4
Glasscock County · Deadwood (Fusselman) field · Vertical
Sfo #4 (API 42-173-35651) is a well in Glasscock County operated by Trilogy Operating Inc., completed December 17, 2013.
The RRC has issued 2 drilling permits between 2013 and 2019, permitted to 12,000 ft.
Completion filings report 9 formation tops, including Wolfcamp, Cline, Strawn, Mississippian.
Its 2 leases have reported 41.7K barrels of oil and 10.9K mcf of gas since January 2013, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Midland, TX · P-5 Y, filed Nov 4, 2025 · 247 permits on file · (432) 556-7931
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trilogy Operating Inc. |
| Production reports | Trilogy Operating, Inc.through Apr 2026 |
| Latest permit | Trilogy Operating, Inc.Apr 23, 2019 |
- 12,000
- total depth, ft
- 2
- permits on file
- Apr 23, 2019
- last permit issued
- Dec 17, 2013
- completed
- 41.7K
- cumulative oil, bbl
- 10.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 17, 2013
- Shut in
- —
- Plugged
- —
Surface location
32.056946, -101.448977
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Glasscock County.
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sfo O-10-51314 | Jailhouse (Fusselman) | Trilogy Operating, Inc. | 2 | 17.9K | 3.67K | May 2019 – Jul 2026 |
| Sfo O-10-43509 | Deadwood (Fusselman) | Trilogy Operating, Inc. | 2 | 23.9K | 7.2K | Jan 2013 – Aug 2019 |
Oil, barrels lease total
Last 12 months 404 · prior 12 2,475(-84%)
Gas, mcf lease total
Last 12 months 135 · prior 12 1,290(-90%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Trilogy Operating, Inc.Jan 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 852267-99 | Field transfer | Trilogy Operating, Inc. | Apr 18, 2019 | Apr 23, 2019 | Mar 24, 2013 | 12,000 |
| 757953-99 | Drill | Trilogy Operating, Inc. | Mar 5, 2013 | Mar 7, 2013 | Mar 24, 2013 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-43509 | — | — | — | — |
| — | — O-10-51314 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,627 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 5,776 | -3,149 |
| WolfcampLOWER WOLFCAMP | 7,510 | -4,883 |
| WolfcampWOLFCAMP SHALES | 8,204 | -5,577 |
| Cline | 8,943 | -6,316 |
| Strawn | 9,213 | -6,586 |
| MississippianMISS | 9,552 | -6,925 |
| Mississippian | 9,552 | -6,925 |
| Woodford | 9,680 | -7,053 |
| Devonian | 9,738 | -7,111 |
| Fusselman | 9,910 | -7,283 |
| Sylvan | 9,972 | -7,345 |
| EllenburgerELLENBERGER | 10,025 | -7,398 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,914 | 9,919 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,442 | 17.5 | 1,220 S |
| 5.5 | 10,047 | 7.875 | 2,550 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 9, 2019 | Apr 25, 2019 | Yes |
| 00 | Oct 6, 2014 | Jan 22, 2014 | 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 42-173-35651 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-35651 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Sfo42-173-35414
0.7 KM · Trilogy Operating, Inc. · Section with this well →
| Wolfcamp | 5,764 | -3,166 |
| Cline | 8,912 | -6,314 |
| Strawn | 9,186 | -6,588 |
| Mississippian | 9,517 | -6,919 |
| Mississippian | 9,517 | -6,919 |
| Fusselman | 9,878 | -7,280 |
| Ellenburger | 9,976 | -7,378 |
MLP42-173-39079
0.9 KM · Trilogy Operating, Inc. · Section with this well →
| Santa Rosa | 261 | 2,362 |
| Rustler | 1,051 | 1,572 |
| Yates | 1,371 | 1,252 |
| Seven Rivers | 1,536 | 1,087 |
| Queen | 1,680 | 943 |
| Grayburg | 1,845 | 778 |
| San Andres | 2,001 | 622 |
| Glorieta | 2,989 | -366 |
10 TOPS · FIRST 8
MLP42-173-35008
1.0 KM · Trilogy Operating, Inc. · Section with this well →
| Wolfcamp | 5,692 | -3,088 |
| Spraberry | 6,235 | -3,631 |
| Dean | 6,975 | -4,371 |
| Cline | 8,893 | -6,289 |
| Atoka | 9,256 | -6,652 |
| Mississippian | 9,516 | -6,912 |
| Mississippian | 9,516 | -6,912 |
| Devonian | 9,705 | -7,101 |
10 TOPS · FIRST 8
JBL42-173-35569
1.2 KM · Trilogy Operating, Inc. · Section with this well →
| Wolfcamp | 3,694 | -1,080 |
| Cline | 8,868 | -6,254 |
| Strawn | 9,141 | -6,527 |
| Devonian | 9,656 | -7,042 |
| Fusselman | 9,778 | -7,164 |
| Sylvan | 9,832 | -7,218 |
| Ellenburger | 9,876 | -7,262 |
| Ellenburger | 9,876 | -7,262 |
JBL42-173-35864
1.7 KM · Trilogy Operating, Inc. · Section with this well →
| Santa Rosa | 350 | 2,279 |
| Rustler | 1,017 | 1,612 |
| Yates | 1,458 | 1,171 |
| Seven Rivers | 1,570 | 1,059 |
| Queen | 1,660 | 969 |
| Grayburg | 1,835 | 794 |
| San Andres | 1,995 | 634 |
| Glorieta | 2,954 | -325 |
19 TOPS · FIRST 8
TCG42-173-39181
1.7 KM · Trilogy Operating, Inc. · Section with this well →
| Santa Rosa | 180 | 2,498 |
| Rustler | 810 | 1,868 |
| Yates | 1,655 | 1,023 |
| Seven Rivers | 1,832 | 846 |
| Queen | 2,010 | 668 |
| Grayburg | 2,148 | 530 |
| San Andres | 2,260 | 418 |
| Glorieta | 3,702 | -1,024 |
10 TOPS · FIRST 8
TCG42-173-33742
1.9 KM · Trilogy Operating, Inc. · Section with this well →
| Wolfcamp | 5,880 | -3,206 |
| Cline | 9,002 | -6,328 |
| Strawn | 9,249 | -6,575 |
| Mississippian | 9,606 | -6,932 |
| Devonian | 9,790 | -7,116 |
| Fusselman | 9,940 | -7,266 |
TCG 2742-173-34087
1.9 KM · Trilogy Operating, Inc. · Section with this well →
| Wolfcamp | 5,890 | -3,238 |
| Strawn | 9,260 | -6,608 |
| Mississippian | 9,635 | -6,983 |
| Mississippian | 9,635 | -6,983 |
| Devonian | 9,826 | -7,174 |
| Fusselman | 10,026 | -7,374 |
| Sylvan | 10,050 | -7,398 |
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/17335651, documented in the API reference.