WELL · 42-283-34660 · DISTRICT 1
Y-Bar West Unit A #1H
LA Salle County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
Y-Bar West Unit A #1H (API 42-283-34660) is a horizontal well in La Salle County operated by Castlerock EF Operating LLC, completed June 25, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 24, 2014, permitted to 10,000 ft.
It was permitted by Murphy Expl. & Prod. CO. - USA and has since transferred to Castlerock EF Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Escondido, Olmos, Anacacho, Austin Chalk.
Its lease has reported 170K barrels of oil and 276K mcf of gas since June 2014, last reporting in July 2026.
Operator of record
Permitted by Murphy Expl. & Prod. Co. - USA; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Nov 4, 2025 · 34 permits on file · (210) 688-4585
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Castlerock EF Operating LLC |
| Production reports | Castlerock EF Operating LLCthrough Mar 2026 |
| Latest permit | Murphy Expl. & Prod. Co. - USAMar 24, 2014 |
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
- Mar 24, 2014
- last permit issued
- Jun 25, 2014
- completed
- 170K
- cumulative oil, bbl
- 276K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 25, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Y-Bar West Unit A O-1-18287 | Eagleville (Eagle Ford-1) | Castlerock EF Operating LLC | 1 | 170K | 276K | Jun 2014 – Jul 2026 |
Oil, barrels lease total
Last 12 months 163 · prior 12 1,530(-89%)
Gas, mcf lease total
Last 12 months 617 · prior 12 2,098(-71%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Murphy Expl. & Prod. Co. - USAJun 2014 → Jul 2022
- 2Castlerock EF Operating LLCSep 2022 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 782653-99 | Drill | Murphy Expl. & Prod. Co. - USA | Mar 20, 2014 | Mar 24, 2014 | Apr 7, 2014 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-18287 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 373 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Escondido | 6,060 | -5,687 |
| OlmosOLMOS - DISPOSAL | 7,036 | -6,663 |
| Anacacho | 8,482 | -8,109 |
| Austin Chalk | 8,606 | -8,233 |
| Eagle FordEAGLE FORD - H2S | 9,260 | -8,887 |
| BudaBUDA - H2S | — | — |
| Queen City | — | — |
| Sparta | — | — |
| WilcoxWILCOX - DISPOSAL | — | — |
| Yegua | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,772 | 16,004 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,950 | 12.25 | 1,301 S |
| 5.5 | 16,118 | 7.875 | 2,330 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 16, 2015 | Jan 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 42-283-34660 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-283-34660 → 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/28334660, documented in the API reference.