WELL · 42-371-35666 · DISTRICT 8
Mendel Estate -38- #2
Pecos County · Maralo (Wolfcamp) field · Vertical
Mendel Estate -38- #2 (API 42-371-35666) is a well in Pecos County operated by Primexx Operating Corporation, completed February 25, 1986.
The RRC has issued one drilling permit, issued November 26, 1985, permitted to 11,400 ft.
It was permitted by Maralo, Inc. and has since transferred to Primexx Operating Corporation on the wellbore schedule.
Completion filings report 6 formation tops, including Rustler, Cherry Canyon, Brushy Canyon, Bone Spring.
Its 2 leases have reported 40.6K barrels of oil and 2.05M mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Maralo, Inc.; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Mar 11, 2022
- Permits on file
- 310
- Phone
- (214) 369-5909
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Primexx Operating Corporation |
| Production reports | Vaquero Operatingthrough Apr 2026 |
| Latest permit | Maralo, Inc.Nov 26, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,400
- total depth, ft
- 1
- permits on file
- Nov 26, 1985
- last permit issued
- Feb 25, 1986
- completed
- 40.6K
- cumulative oil, bbl
- 2.05M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 25, 1986
- Shut in
- —
- Plugged
- —
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mendel Estate -38- G-10-282494 | Maralo (Wolfcamp) | Vaquero Operating | 1 | 0 | 172K | Mar 2017 – Jul 2026 |
| Mendel Estate -38- O-10-29950 | Maralo (Wolfcamp) | Primexx Operating Corporation | 3 | 40.6K | 1.88M | Jan 1993 – Feb 2018 |
Gas, mcf lease total
Last 12 months 25,437 · prior 12 18,714(+36%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Maralo, Inc.Jan 1993 → Dec 1998
- 2Maralo, LLCJan 1999 → Nov 2004
- 3COG Operating LLCDec 2004 → Feb 2009
- 4WJC, Inc.Mar 2009 → May 2013
- 5Primexx Operating CorporationMar 2014 → Sep 2017
- 6Black Mountain Oil & Gas II LLCOct 2017 → Nov 2019
- 7Vaquero OperatingDec 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 291782-99 | Drill | Maralo, Inc. | Nov 25, 1985 | Nov 26, 1985 | — | 11,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-282494 | — | — | — | — |
| — | — O-10-29950 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,944 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 1,458 | 1,486 |
| Cherry Canyon | 5,681 | -2,737 |
| Brushy Canyon | 6,894 | -3,950 |
| Bone SpringBONE SPRINGS LIME | 7,565 | -4,621 |
| Third BS Sand | 9,699 | -6,755 |
| Wolfcamp | 9,900 | -6,956 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,843 | 10,938 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 700 | 20 | 800 S |
| 10.75 | 3,953 | 14.75 | 2,900 S |
| 7.625 | 10,200 | 9.5 | 350 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 27, 2017 | Apr 10, 2017 | Yes |
| 00 | Apr 1, 1986 | Mar 17, 1986 | Yes |
| 00 | Mar 25, 1986 | — | — |
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 42-371-35666 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-35666 → 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/37135666, documented in the API reference.