WELL · 42-391-30204 · DISTRICT 2
Clement Heard #21
Refugio County · Vertical
Clement Heard #21 (API 42-391-30204) is a former disposal or injection well in Refugio County, last operated by Hilcorp Energy Company; its UIC permit is no longer active.
The RRC has issued 7 drilling permits (amended once) between 1991 and 2016, permitted to 7,810 ft.
Completion filings report 8 formation tops, including Lagarto, Surface Sand & Clay, Oakville, Catahoula.
Its 8 leases have reported 24.7M barrels of oil and 16.3M mcf of gas since January 1993, last reporting in July 2026. The leases carry 636 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanyApr 27, 2016 |
- 7,810
- total depth, ft
- 8
- permits on file
- Apr 27, 2016
- last permit issued
- —
- completed
- 24.7M
- cumulative oil, bbl
- 16.3M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 8 leases this well is completed on; they carry 636 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Heard, Clement G-2-229397 | Tom Oconnor (5425 Sand) | Hilcorp Energy Company | 1 | 0 | 26.8K | Mar 2007 – Jul 2026 |
| Heard, Clement O-2-2523 | Tom Oconnor (4500 Greta Mass.) | Hilcorp Energy Company | 16 | 539K | 277K | Jan 1993 – Jul 2026 |
| Heard, Clement O-2-2585 | Tom Oconnor (5500 Sand) | Hilcorp Energy Company | 20 | 1.34M | 986K | Jan 1993 – Jul 2026 |
| Tom Oconnor (5800 SD) Fld. Unit O-2-5280 | Tom Oconnor (5800) | Hilcorp Energy Company | 594 | 22.8M | 14.9M | Jan 1993 – Jul 2026 |
| Heard, Clement O-2-8436 | Tom Oconnor (5625 Sand) | Hilcorp Energy Company | 1 | 7.1K | 13.8K | Mar 1999 – Sep 2007 |
| Heard, Clement O-2-4790 | Tom Oconnor (6600) | Quintana Pet. Corp. | 4 | 1.52K | 56.6K | Jan 1993 – May 1994 |
| — G-2-112996 | — | — | 0 | 0 | 0 | — |
| — O-2-7699 | — | — | 0 | 0 | 0 | — |
Oil, barrels lease total
Last 12 months 676,573 · prior 12 532,805(+27%)
Gas, mcf lease total
Last 12 months 118,289 · prior 12 85,043(+39%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Quintana Pet. Corp.Jan 1993 → Nov 2000
- 2Hilcorp Energy CompanyDec 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 815273-99 | Recompletion | Hilcorp Energy Company | Apr 26, 2016 | Apr 27, 2016 | May 19, 2016 | 7,810 |
| 683377-99 | Recompletion | Hilcorp Energy Company | Jul 22, 2009 | Aug 7, 2009 | — | 7,810 |
| 634900-99 | Recompletion | Hilcorp Energy Company | Mar 8, 2007 | Mar 15, 2007 | Mar 12, 2007 | 7,810 |
| 530697-98 | Recompletion | Hilcorp Energy Company | Jan 24, 2005 | May 8, 2003 | — | 7,810 |
| 530697-99 | Recompletion | Hilcorp Energy Company | Apr 14, 2003 | May 8, 2003 | — | 7,810 |
| 480232-99 | Recompletion | Quintana Pet. Corp. | Oct 16, 1998 | Oct 26, 1998 | Nov 18, 1998 | 7,810 |
| 397280-99 | Recompletion | Quintana Pet. Corp. | Mar 6, 1992 | Mar 26, 1992 | Mar 26, 1992 | 7,810 |
| 381883-99 | Other | Quintana Pet. Corp. | Dec 4, 1990 | Jan 10, 1991 | Feb 6, 1991 | 7,810 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-112996 | — | — | — | — |
| — | — G-2-229397 | — | — | — | — |
| — | — O-2-2523 | — | — | — | — |
| — | — O-2-2585 | — | — | — | — |
| — | — O-2-4790 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-7699 | — | — | — | — |
| — | — O-2-8436 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 57 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,443 |
| Surface Sand & Clay | 1,500 | -1,443 |
| LagartoLARGARTO | 2,750 | -2,693 |
| Oakville | 2,750 | -2,693 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,243 |
| CatahoulaCATAHOULA(MIOCENE) | 3,300 | -3,243 |
| Oakville | 3,300 | -3,243 |
| Catahoula | 3,584 | -3,527 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,043 |
| AnahuacANAHUAC(MIOCENE) | 4,100 | -4,043 |
| CatahoulaCATAHOULA (MIOCENE) | 4,100 | -4,043 |
| Frio | 4,341 | -4,284 |
| AnahuacANAHUAC (MIOCENE) | 4,365 | -4,308 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,308 |
| FrioFRIO-GRETA(OLIGOCENE) | 4,365 | -4,308 |
| FrioFRIO-GRET (OLIGOCENE) | 4,365 | -4,308 |
| FrioFRIO-GRETA (OLIG) | 4,785 | -4,728 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,943 |
| FrioMIDDLE FRIO(SINTON) | 5,000 | -4,943 |
| FrioMIDDLE FRIO (SINTON) | 5,400 | -5,343 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,823 |
| FrioLOWER FRIO (OLIG) | 7,810 | -7,753 |
| JacksonJACKSON/YEGUA | — | — |
| NO Change | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,406 | 4,412 | Perforated |
| 5,332 | 5,338 | Perforated |
| 5,440 | 5,446 | Perforated |
| 5,535 | 5,541 | Perforated |
| 5,607 | 5,616 | Perforated |
| 5,735 | 5,751 | Perforated |
| 6,550 | 6,557 | Perforated |
| 6,569 | 6,576 | Perforated |
| 6,620 | 6,624 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,023 | 13.75 | 515 S |
| 5.5 | 7,801 | 8.75 | 1,730 S |
| 5.5 | 7,900 | 8.75 | 1,730 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 | Jun 15, 2016 | Jun 7, 2016 | — |
| 00 | Sep 25, 2007 | Mar 29, 2007 | Yes |
| 00 | Sep 12, 2007 | — | — |
| 00 | May 25, 1999 | Mar 4, 1999 | — |
| 00 | Apr 16, 1999 | May 21, 1991 | Yes |
| 00 | Jul 16, 1992 | May 28, 1992 | Yes |
| 00 | Jun 4, 1992 | May 21, 1991 | Yes |
| 00 | Jun 25, 1991 | May 21, 1991 | Yes |
| 00 | Jun 5, 1991 | May 21, 1991 | Yes |
| 00 | Jun 5, 1991 | May 10, 1990 | Yes |
| 00 | Jun 21, 1990 | May 10, 1990 | Yes |
| 00 | Jan 22, 1985 | Oct 9, 1984 | — |
| 00 | Oct 23, 1984 | Sep 26, 1984 | — |
| 00 | Jan 12, 1984 | Jun 13, 1972 | — |
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 42-391-30204 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-30204 → 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
- 0
- bbl, last 12 reported months
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000122749 | H-1 Injection | Not activated | 6,000 | 2,200 | 4,406–4,496 |
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/39130204, documented in the API reference.