WELL · 42-489-30637 · DISTRICT 4
Sauz Ranch Mulatos Pasture #166
Willacy County · Willamar West (Miocene 6100) field · Vertical
Sauz Ranch Mulatos Pasture #166 (API 42-489-30637) is a plugged well in Willacy County, plugged September 30, 2024, last operated by Flint Oak Energy LLC.
The RRC has issued 4 drilling permits between 1980 and 1996, permitted to 6,800 ft.
It was permitted by Parker & Parsley Development L.P and has since transferred to Flint Oak Energy LLC on the wellbore schedule.
Completion filings report one formation top, including Miocene (undifferentiated).
Its 4 leases have reported 54.3K barrels of oil and 67.8K mcf of gas since January 1993, last reporting in July 2026. The leases carry 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Parker & Parsley Development L.P; the EWA schedule now lists a different operator.
Montgomery, TX · P-5 Y, filed Jan 4, 2026 · 14 permits on file · (832) 262-9521
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Flint Oak Energy LLC |
| Production reports | Cimarex Energy Co. of Coloradothrough Jul 2009 |
| Latest permit | Parker & Parsley Development L.PDec 5, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,800
- total depth, ft
- 4
- permits on file
- Dec 5, 1996
- last permit issued
- Sep 1, 1993
- completed
- 54.3K
- cumulative oil, bbl
- 67.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 1, 1993
- Shut in
- —
- Plugged
- Sep 30, 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.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 4 leases this well is completed on; they carry 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sauz Ranch Mulatos Pasture O-4-12283 | Willamar, West (Miocene 5850) | Chestnut Explor. and Prod., Inc. | 2 | 27.7K | 23.3K | Nov 1993 – Jul 2026 |
| Sauz Ranch Mulatos Pasture O-4-12349 | Willamar, West (Miocene 6100) | Flint Oak Energy, LLC | 2 | 26.6K | 44.5K | Apr 1994 – Aug 2013 |
| Sauz Ranch Mulatos Pasture G-4-147427 | Wildcat | Exxon Corp. | 1 | 0 | 0 | Sep 1993 – May 1994 |
| Sauz Ranch Mulatos Pasture O-4-10698 | Willamar, West (Miocene 5650) | Exxon Corp. | 2 | 0 | 0 | Jan 1993 – Dec 1993 |
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.
- 1Exxon Corp.Feb 1994 → Dec 1995
- 2Parker & Parsley Development L.PJan 1996 → Aug 1997
- 3Pioneer Natural Res. USA, Inc.Sep 1997 → Jun 1999
- 4Prize Operating CompanyJul 1999 → Mar 2002
- 5Gruy Petroleum Management Co.Apr 2002 → Apr 2006
- 6Cimarex Energy Co. of ColoradoMay 2006 → Jul 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 455491-99 | Recompletion | Parker & Parsley Development L.P | Nov 22, 1996 | Dec 5, 1996 | Nov 12, 1996 | 6,800 |
| 414674-99 | Recompletion | Exxon Corp. | Aug 6, 1993 | Aug 6, 1993 | Aug 19, 1993 | 6,184 |
| 256047-99 | Recompletion | Exxon Corp. | Oct 26, 1984 | Oct 29, 1984 | — | 6,400 |
| 103586-99 | Drill | Exxon Corp. | Dec 31, 1980 | Dec 31, 1980 | Jan 3, 1981 | 6,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-147427 | — | — | — | — |
| — | — O-4-10698 | — | — | — | — |
| — | — O-4-12283 | — | — | — | — |
| — | — O-4-12349 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 27 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)TOP OF MIOCENE | 3,200 | -3,173 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,286 | 5,292 | Perforated |
| 5,612 | 5,616 | Perforated |
| 5,876 | 5,882 | Perforated |
| 6,130 | 6,136 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,612 | 12.25 | 780 S |
| 2.875 | 5,170 | — | — |
| 5.5 | 6,392 | 7.875 | 522 S |
| 5.5 | 6,393 | 7.875 | 522 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 | Apr 17, 1997 | Mar 17, 1997 | Yes |
| 00 | Mar 24, 1997 | Jun 13, 1994 | — |
| 00 | Aug 5, 1994 | Jun 13, 1994 | — |
| 00 | Jul 5, 1994 | — | — |
| 00 | Mar 1, 1994 | Dec 16, 1993 | Yes |
| 00 | Dec 22, 1993 | — | — |
| 00 | Feb 14, 1985 | Jan 2, 1985 | — |
| 00 | Feb 12, 1985 | — | — |
| 00 | Jan 12, 1984 | May 15, 1981 | — |
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 42-489-30637 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-30637 → 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.
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/48930637, documented in the API reference.