WELL · 42-283-34127 · DISTRICT 1
Rathjen a Unit #B 4H
LA Salle County · Eagleville (Eagle Ford-1) field · Horizontal
Rathjen A Unit #B 4H (API 42-283-34127) is a horizontal well in La Salle County operated by Javelin Energy Partners Mgmt LLC, completed April 18, 2014.
The RRC has issued one drilling permit, issued August 1, 2013, permitted to 10,000 ft.
It was permitted by Sanchez Oil & Gas Corporation and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Pecan Gap, Austin Chalk, Eagle Ford.
Its 2 leases have reported 284K barrels of oil and 1.15M mcf of gas since January 2012, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Sanchez Oil & Gas Corporation; 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 | Sanchez Oil & Gas CorporationAug 1, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 1
- permits on file
- Aug 1, 2013
- last permit issued
- Apr 18, 2014
- completed
- 284K
- cumulative oil, bbl
- 1.15M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 18, 2014
- 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 2 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Rathjen a Unit G-1-290821 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 1 | 0 | 340K | Dec 2013 – Jul 2026 |
| Rathjen a Unit O-1-15801 | Eagleville (Eagle Ford-1) | Javelin Energy Partners Mgmt LLC | 4 | 284K | 806K | Jan 2012 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,563 · prior 12 6,281(-75%)
Gas, mcf lease total
Last 12 months 8,015 · prior 12 10,931(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hess CorporationAug 2012 → May 2013
- 2Sanchez Oil & Gas CorporationJun 2013 → Apr 2014
- 3Callon (Eagle Ford) LLCDec 2013 → Jun 2023
- 4SN Operating, LLCMay 2014 → Nov 2016
- 5Carrizo (Eagle Ford) LLCDec 2016 → Jan 2020
- 6Ridgemar Energy Operating, LLCJul 2023 → Jan 2025
- 7Javelin Energy Partners Mgmt LLCFeb 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 767396-99 | Drill | Sanchez Oil & Gas Corporation | Jul 31, 2013 | Aug 1, 2013 | Nov 9, 2013 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-1-290821 | — | — | — | — |
| — | — O-1-15801 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 451 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 6,917 | -6,466 |
| Austin Chalk | 7,092 | -6,641 |
| Eagle Ford | 7,782 | -7,331 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,294 | 13,330 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 4,030 | 12.25 | 975 S |
| 5.5 | 13,444 | 8.75 | 1,780 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 14, 2021 | May 6, 2021 | — |
| 00 | Apr 6, 2015 | Nov 19, 2014 | — |
| 00 | Feb 18, 2014 | Dec 30, 2013 | 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 42-283-34127 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-34127 → 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/28334127, documented in the API reference.