TEXAS · WELLS · LA SALLE COUNTY · API 42-283-32741 · DISTRICT 01
Irvin West #12H
La Salle County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
Irvin West #12H (API 42-283-32741) is a horizontal well in La Salle County operated by Javelin Energy Partners Mgmt LLC, completed January 20, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued August 10, 2011, permitted to 8,657 ft.
It was permitted by Carrizo Oil & Gas, Inc. and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Carrizo, Austin Chalk, Eagle Ford.
Its 2 leases have reported 20.1M barrels of oil and 23.2M mcf of gas since October 2011, last reporting volume in March 2026. The leases carry 111 wells, so these are lease totals, not this well alone.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Carrizo Oil & Gas, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 24, 2026
- Permits on file
- 234
- Phone
- (469) 575-3800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Javelin Energy Partners Mgmt LLC |
| Production reports | Javelin Energy Partners Mgmt LLCthrough Mar 2026 |
| Latest permit | Carrizo Oil & Gas, Inc.Aug 10, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,657
- total depth, ft
- 2
- permits on file
- Aug 10, 2011
- last permit issued
- Jan 20, 2012
- completed
- 20.1M
- cumulative oil, bbl
- 23.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2011 THROUGH Mar 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 20, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 111 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Irvin East O-1-15575 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 36 | 8.07M | 8.11M | Oct 2011 – Mar 2026 |
| Irvin West O-1-17695 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 75 | 12M | 15.1M | Jun 2013 – Mar 2026 |
Oil, barrels lease total
Last 12 months 718,502 · prior 12 910,474(-21%)
Gas, mcf lease total
Last 12 months 800,988 · prior 12 758,983(+6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Carrizo (Eagle Ford) LLCDec 2011 → Jan 2020
- 2Callon (Eagle Ford) LLCFeb 2020 → Jun 2023
- 3Ridgemar Energy Operating, LLCJul 2023 → Jan 2025
- 4Javelin Energy Partners Mgmt LLCFeb 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 721882-98 | Drill | Carrizo Oil & Gas, Inc. | Dec 1, 2011 | Aug 10, 2011 | Dec 10, 2011 | 11,000 |
| 721882-99 | Drill | Carrizo Oil & Gas, Inc. | Aug 8, 2011 | Aug 10, 2011 | Sep 8, 2011 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 20, 2012 | Irvin West O-1-17695 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | Producing | 8,657 |
| Dec 10, 2011 | Irvin East O-1-15575 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 404 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CarrizoBASE OF CARRIZO | 3,300 | -2,896 |
| Austin Chalk | 7,777 | -7,373 |
| Eagle Ford | 8,186 | -7,782 |
| Eagle FordEAGLEFORD | 8,186 | -7,782 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,005 | 13,607 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,432 | 14.75 | 1,304 S |
| 5.5 | 13,730 | 8.75 | 2,124 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jan 7, 2016 | Oct 28, 2015 | — |
| 00 | Aug 11, 2014 | Feb 7, 2012 | — |
| 00 | May 3, 2012 | Feb 7, 2012 | — |
| 00 | Mar 27, 2012 | Jan 3, 2012 | Yes |
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 42-283-32741 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-32741 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/28332741, documented in the API reference.