WELL · 42-427-31621 · DISTRICT 4
Olivares A. #21
Starr County · Sun (G-1 East) field · Vertical
Olivares A. #21 (API 42-427-31621) is a well in Starr County operated by Sun Expl. & Prod. CO.-Corpus, completed February 14, 1982.
The RRC has issued 2 drilling permits (amended once) between 1981 and 1983, permitted to 9,000 ft.
Completion filings report 8 formation tops, including B/Miocene - T/Catahoula, A-Sand, D-1 Sand, 4810' Sand.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit, with 227K barrels injected in the 12 months reported through July 2025.
Operator of record
Houston, TX · P-5 New · 1,290 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sun Expl. & Prod. Co.-Corpus |
| Production reports | none |
| Latest permit | Sun Expl. & Prod. Co.-CorpusMar 4, 1983 |
- 9,000
- total depth, ft
- 3
- permits on file
- Mar 4, 1983
- last permit issued
- Feb 14, 1982
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 14, 1982
- 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 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 |
|---|---|---|---|---|---|---|
| Olivares, Agustin O-4-3079 | Sun | Killam Oil Co., Ltd. | 3 | 0 | 0 | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 187471-98 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Mar 9, 1987 | Mar 4, 1983 | — | 8,013 |
| 187471-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Mar 4, 1983 | Mar 4, 1983 | Apr 29, 1983 | 8,013 |
| 146209-99 | Drill | Sun Expl. & Prod. Co.-Corpus | Dec 31, 1981 | Dec 31, 1981 | Jan 5, 1982 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-3079 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 358 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| B/Miocene - T/Catahoula | 3,060 | -2,702 |
| A-Sand | 3,835 | -3,477 |
| D-1 Sand | 4,545 | -4,187 |
| 4810' Sand | 4,765 | -4,407 |
| G-1, East | 5,054 | -4,696 |
| Vicksburg | 5,430 | -5,072 |
| B/Frio - T/Vicksburg | 5,457 | -5,099 |
| Vxbg Rincon | 7,380 | -7,022 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,106 | 3,122 | Perforated |
| 3,202 | 3,246 | Perforated |
| 3,470 | 3,550 | Perforated |
| 3,835 | 3,842 | Perforated |
| 4,596 | 4,601 | Perforated |
| 5,064 | 5,066 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,030 | 10.75 | 610 S |
| 9.625 | 2,030 | 12.25 | 610 S |
| 2.375 | 5,002 | — | — |
| 5.5 | 5,270 | 8.75 | 640 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 20, 2023 | Jan 3, 2023 | — |
| 00 | Feb 12, 2009 | Jul 8, 2008 | — |
| 00 | Dec 11, 2007 | Aug 21, 2007 | — |
| 00 | Apr 1, 2004 | Jan 12, 2004 | — |
| 00 | Sep 21, 1993 | Jul 19, 1993 | — |
| 00 | Jan 20, 1988 | Nov 25, 1987 | — |
| 00 | Apr 13, 1987 | Mar 6, 1987 | Yes |
| 00 | Mar 18, 1987 | — | — |
| 00 | Jan 12, 1984 | Jun 21, 1982 | — |
| 00 | Jan 12, 1984 | Feb 23, 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 42-427-31621 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-427-31621 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 227K
- bbl, last 12 reported months
- 3.96M
- bbl, all reported
- Jul 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000063205 | H-1 Injection | Active | 3,000 | 1,500 | 3,070–3,842 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 227,358 · prior 12 220,519(+3%)
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/42731621, documented in the API reference.