TEXAS · WELLS · LA SALLE COUNTY · WINFIELD A UNIT LEASE · API 42-283-33056 · DISTRICT 01
Winfield a Unit #81H
La Salle County · Eagleville (Eagle Ford-1) field · NO Production · Horizontal
Winfield A Unit #81H (API 42-283-33056) is a horizontal well in La Salle County operated by Javelin Energy Partners Mgmt LLC, completed January 16, 2013 and listed as no production on the RRC schedule, shut in October 1, 2025.
The RRC has issued one drilling permit (amended once), issued February 16, 2012, permitted to 8,093 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 lease has reported 529K barrels of oil and 924K mcf of gas since September 2012, last reporting volume in September 2025. The lease carries 2 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 Sep 2025 |
| Latest permit | Carrizo Oil & Gas, Inc.Feb 16, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,093
- total depth, ft
- 2
- permits on file
- Feb 16, 2012
- last permit issued
- Jan 16, 2013
- completed
- 529K
- cumulative oil, bbl
- 924K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2013 THROUGH Sep 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 16, 2013
- Shut in
- Oct 1, 2025
- 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 lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Winfield a Unit O-1-16278 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 2 | 529K | 924K | Sep 2012 – Sep 2025 |
Oil, barrels lease total
Last 12 months 7,857 · prior 12 11,793(-33%)
Gas, mcf lease total
Last 12 months 1,297 · prior 12 31,964(-96%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Carrizo (Eagle Ford) LLCJan 2013 → Jan 2020
- 2Callon (Eagle Ford) LLCFeb 2020 → Jun 2023
- 3Ridgemar Energy Operating, LLCJul 2023 → Jan 2025
- 4Javelin Energy Partners Mgmt LLCFeb 2025 → Sep 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 733272-98 | Drill | Carrizo Oil & Gas, Inc. | Nov 9, 2012 | Feb 16, 2012 | Nov 20, 2012 | 11,000 |
| 733272-99 | Drill | Carrizo Oil & Gas, Inc. | Feb 6, 2012 | Feb 16, 2012 | Aug 27, 2012 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 16, 2013 | Winfield a Unit O-1-16278 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | NO Production · shut in Oct 1, 2025 | 8,093 |
Formation tops
As filed on W-2/G-1. Subsea from 579 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CarrizoBASE OF CARRIZO | 2,950 | -2,371 |
| Austin Chalk | 7,306 | -6,727 |
| Eagle Ford | 7,990 | -7,411 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,460 | 14,501 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,050 | 12.25 | 726 S |
| 5.5 | 14,621 | 8.5 | 2,339 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 | May 9, 2013 | Mar 11, 2013 | — |
| 00 | Feb 7, 2013 | Nov 15, 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 42-283-33056 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-33056 → 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/28333056, documented in the API reference.