TEXAS · WELLS · REAGAN COUNTY · SCHAEFER, C. E. SR. LEASE · API 42-383-35757 · DISTRICT 6E
Schaefer C. E. Sr. #4TM
Reagan County · Spraberry (Trend Area) field · Vertical
Schaefer C. E. SR. #4TM (API 42-383-35757) is a plugged well in Reagan County, plugged July 22, 2021, last operated by Pioneer Natural Res. USA Inc..
The RRC has issued one drilling permit, issued March 27, 2006, permitted to 9,000 ft.
It was permitted by Mariner Energy, Inc. and has since transferred to Pioneer Natural Res. USA Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Spraberry, Dean.
Its lease has reported 54.2K barrels of oil and 542K mcf of gas since January 1993, last reporting in October 2021. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mariner Energy, Inc.; the EWA schedule now lists a different operator.
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,628
- Phone
- (972) 444-4001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Pioneer Natural Res. USA Inc. |
| Production reports | Pioneer Natural Res. USA, Inc.through Mar 2021 |
| Latest permit | Mariner Energy, Inc.Mar 27, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 1
- permits on file
- Mar 27, 2006
- last permit issued
- May 27, 2021
- completed
- 54.2K
- cumulative oil, bbl
- 542K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 2021
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 27, 2021
- Shut in
- —
- Plugged
- Jul 22, 2021
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Schaefer, C. E. Sr. O-9-6172 | Spraberry (Trend Area) | Pioneer Natural Res. USA, Inc. | 3 | 54.2K | 542K | Jan 1993 – Oct 2021 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tamarack Petroleum Company, Inc.Jan 1993 → Nov 2007
- 2Mariner Energy, Inc.Dec 2007 → Nov 2010
- 3Apache CorporationDec 2010 → Feb 2017
- 4Parsley Energy Operations, LLCMar 2017 → Jan 2021
- 5Pioneer Natural Res. USA, Inc.Feb 2021 → Mar 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 616476-99 | Drill | Mariner Energy, Inc. | Mar 27, 2006 | Mar 27, 2006 | May 12, 2006 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 27, 2021 | Schaefer C. E. Sr. O-9-6172 | Spraberry (Trend Area) | Pioneer Natural Res. USA Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,678 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,248 | 6,276 | Perforated |
| 6,816 | 7,263 | Perforated |
| 7,687 | 7,857 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 465 | 11 | 300 S |
| 4.5 | 8,072 | 7.875 | 1,210 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 13, 2021 | Jun 9, 2021 | — |
| 00 | Nov 2, 2006 | Jul 6, 2006 | Yes |
| 00 | Jul 12, 2006 | — | — |
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 42-383-35757 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-35757 → 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/38335757, documented in the API reference.