TEXAS · WELLS · LA SALLE COUNTY · API 42-283-35462 · DISTRICT 01
Miesch B Unit #21H
La Salle County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
Miesch B Unit #21H (API 42-283-35462) is a horizontal well in La Salle County operated by Javelin Energy Partners Mgmt LLC, completed October 10, 2015 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued April 30, 2015, permitted to 7,588 ft.
It was permitted by Carrizo (Eagle Ford) LLC and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Wilcox, Escondido, Olmos, Austin Chalk.
Its 2 leases have reported 379K barrels of oil and 1.69M mcf of gas since July 2015, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Carrizo (Eagle Ford) LLC; 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
- 233
- 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 (Eagle Ford) LLCApr 30, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,588
- total depth, ft
- 2
- permits on file
- Apr 30, 2015
- last permit issued
- Oct 10, 2015
- completed
- 379K
- cumulative oil, bbl
- 1.69M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 10, 2015
- 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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Miesch B Unit G-1-291299 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 1 | 0 | 535K | Oct 2015 – Jul 2026 |
| Miesch B Unit O-1-18386 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 5 | 379K | 1.16M | Jul 2015 – Jul 2026 |
Gas, mcf lease total
Last 12 months 30,794 · prior 12 36,952(-17%)
Oil, barrels lease total
Last 12 months 5,529 · prior 12 12,700(-56%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Callon (Eagle Ford) LLCOct 2015 → Jun 2023
- 2Carrizo (Eagle Ford) LLCDec 2017 → Jan 2020
- 3Ridgemar Energy Operating, LLCJul 2023 → Jan 2025
- 4Javelin Energy Partners Mgmt LLCFeb 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 805642-98 | Drill | Carrizo (Eagle Ford) LLC | Jun 26, 2015 | Apr 30, 2015 | Aug 19, 2015 | 11,000 |
| 805642-99 | Drill | Carrizo (Eagle Ford) LLC | Apr 15, 2015 | Apr 30, 2015 | Jul 4, 2015 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 10, 2015 | Miesch B Unit G-1-291299 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | Producing | 7,588 |
| Oct 10, 2015 | Miesch B Unit O-1-18386 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 529 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxWILCOX - DISPOSAL | 3,545 | -3,016 |
| Escondido | 4,213 | -3,684 |
| OlmosOLMOS - DISPOSAL | 5,500 | -4,971 |
| Austin Chalk | 6,783 | -6,254 |
| Eagle FordEAGLE FORD - H2S | 7,661 | -7,132 |
| BudaBUDA - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| Queen City | — | — |
| Sparta | — | — |
| Yegua | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,940 | 13,818 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,530 | 14.75 | 1,464 S |
| 5.5 | 13,940 | 8.75 | 2,190 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 | Sep 13, 2021 | Aug 25, 2021 | — |
| 00 | Feb 16, 2016 | Dec 28, 2015 | — |
| 00 | Sep 3, 2015 | Aug 28, 2015 | 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 42-283-35462 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-35462 → 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/28335462, documented in the API reference.