TEXAS · WELLS · PECOS COUNTY · SCHLOSSER, FRED ESTATE -B- LEASE · API 42-371-33571 · DISTRICT 7B
Schlosser Fred Estate -B- #4
Pecos County · Rojo Caballos (Delaware) field · Vertical
Schlosser Fred Estate -B- #4 (API 42-371-33571) is a plugged well in Pecos County, plugged March 26, 2024, last operated by Xto Energy Inc..
The RRC has issued one drilling permit, issued September 23, 1981, permitted to 6,000 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Xto Energy Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Lamar, Bell Canyon.
Its lease has reported 265K barrels of oil and 226K mcf of gas since the record begins in January 1993, with no volume in the three years through April 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Producing TX. & N.M. Inc.; the EWA schedule now lists a different operator.
- Based in
- Spring, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Apr 8, 2026
- Permits on file
- 16,156
- Phone
- (346) 502-1572
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | XTO Energy Inc. |
| Production reports | XTO Energy Inc.through Sep 2017 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Sep 23, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,000
- total depth, ft
- 1
- permits on file
- Sep 23, 1981
- last permit issued
- Sep 29, 1984
- completed
- 265K
- cumulative oil, bbl
- 226K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH SEP 2017
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 29, 1984
- Shut in
- —
- Plugged
- Mar 26, 2024
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 APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Schlosser, Fred Estate -B- O-10-26096 | Rojo Caballos (Delaware) | XTO Energy Inc. | 8 | 265K | 226K | by Jan 1993 – Sep 2017 |
No volumes reported on these leases in the last three years.
Wells named Schlosser Fred Estate -B-
XTO Energy Inc.'s other wells filed under this lease name in Pecos 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.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → May 2002
- 2Apache CorporationNov 2004 → Aug 2017
- 3XTO Energy Inc.Sep 2017 → Sep 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 134748-99 | Drill | Mobil Producing TX. & N.M. Inc. | Sep 23, 1981 | Sep 23, 1981 | Sep 26, 1981 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 29, 1984 | Schlosser Fred Estate -B- O-10-26096 | Rojo Caballos (Delaware) | XTO Energy Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,744 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lamar | 5,194 | -2,450 |
| Bell Canyon | 5,230 | -2,486 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,231 | 5,251 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,923 | 12.25 | 700 S |
| 8.625 | 1,923 | — | — |
| 2.875 | 5,242 | — | — |
| 5.5 | 5,500 | 7.875 | 200 S |
| 5.5 | 5,500 | — | — |
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 | Dec 17, 1984 | Dec 3, 1984 | — |
| 00 | Jan 12, 1984 | Feb 11, 1982 | — |
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 42-371-33571 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-33571 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/37133571, documented in the API reference.