WELL · 42-489-30823 · DISTRICT 4
Sauz Ranch Mulatos Past. #182
Willacy County · Willamar West (Miocene 6050 N) field · Vertical
Sauz Ranch Mulatos Past. #182 (API 42-489-30823) is a plugged well in Willacy County, plugged August 12, 1993, last operated by Chestnut Explor. And Prod. Inc..
The RRC has issued 2 drilling permits between 1984 and 1986, permitted to 6,800 ft.
It was permitted by Exxon Corp. and has since transferred to Chestnut Explor. And Prod. Inc. on the wellbore schedule.
Its 2 leases have reported 6.25K barrels of oil and 5.8K 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
Chestnut Explor. and Prod. Inc.
Permitted by Exxon Corp.; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Sep 4, 2025 · 5 permits on file · (972) 342-7791
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chestnut Explor. and Prod. Inc. |
| Production reports | Prize Operating Companythrough Mar 2000 |
| Latest permit | Exxon Corp.May 20, 1986 |
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
- 2
- permits on file
- May 20, 1986
- last permit issued
- Jul 10, 1986
- completed
- 6.25K
- cumulative oil, bbl
- 5.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jul 10, 1986
- Shut in
- —
- Plugged
- Aug 12, 1993
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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sauz Ranch Mulatos Past. O-4-10529 | Willamar, West (Miocene 6050,N) | Chestnut Explor. and Prod., Inc. | 4 | 6.25K | 5.8K | Jan 1993 – Jul 2026 |
| Sauz Ranch Mulatos Pasture O-4-9940 | Willamar, West (Miocene 5950) | Cimarex Energy Co. of Colorado | 3 | 0 | 0 | Jan 1993 – Jun 2008 |
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.
- 1Parker & Parsley Development L.PJul 1997 → Aug 1997
- 2Pioneer Natural Res. USA, Inc.Sep 1997 → Jun 1999
- 3Prize Operating CompanyJul 1999 → Mar 2000
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 302313-99 | Recompletion | Exxon Corp. | Apr 17, 1986 | May 20, 1986 | — | 6,800 |
| 246163-99 | Drill | Exxon Corp. | Dec 7, 1984 | Jul 24, 1984 | Aug 9, 1984 | 6,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-9940 | — | — | — | — |
| — | — O-4-10529 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,294 | 5,300 | Perforated |
| 5,886 | 5,890 | Perforated |
| 5,983 | 5,988 | Perforated |
| 6,084 | 6,088 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,566 | 12.25 | 783 S |
| 8.625 | 1,566 | 12.5 | 783 S |
| 2.875 | 6,428 | 7.875 | 1,170 S |
| 2.875 | 6,428 | — | — |
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 | Aug 15, 1986 | Jul 31, 1986 | Yes |
| 00 | Aug 8, 1986 | — | Yes |
| 00 | Jul 23, 1986 | Jul 14, 1986 | Yes |
| 00 | Jul 19, 1986 | — | — |
| 00 | Jun 10, 1985 | Apr 17, 1985 | — |
| 00 | May 25, 1985 | — | — |
| 00 | Mar 25, 1985 | Mar 12, 1985 | — |
| 00 | Mar 21, 1985 | — | — |
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 42-489-30823 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-30823 → 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/48930823, documented in the API reference.