TEXAS · WELLS · LAVACA COUNTY · SHINER UNIT A LEASE · API 42-285-33683 · DISTRICT 02
Shiner Unit A #1H
Lavaca County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
Shiner Unit A #1H (API 42-285-33683) is a horizontal well in Lavaca County operated by Ensign Natural Resources II LLC, completed July 28, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued January 8, 2013, permitted to 12,206 ft.
It was permitted by Marathon Oil EF LLC and has since transferred to Ensign Natural Resources II LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Wilcox, Escondido, Eagle Ford, Anacacho.
Its lease has reported 79.6K barrels of oil and 180K mcf of gas since April 2013, last reporting in July 2026.
Operator of record
Ensign Natural Resources II LLC
Permitted by Marathon Oil EF LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 29, 2026
- Permits on file
- 13
- Phone
- (346) 809-4062
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ensign Natural Resources II LLC |
| Production reports | Marathon Oil EF LLCthrough Mar 2026 |
| Latest permit | Marathon Oil EF LLCJan 8, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,206
- total depth, ft
- 1
- permits on file
- Jan 8, 2013
- last permit issued
- Jul 28, 2016
- completed
- 79.6K
- cumulative oil, bbl
- 180K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 28, 2016
- 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 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 |
|---|---|---|---|---|---|---|
| Shiner Unit A O-2-10506 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 79.6K | 180K | Apr 2013 – Jul 2026 |
Oil, barrels lease total
Last 12 months 61 · prior 12 89(-31%)
Gas, mcf lease total
Last 12 months 53 · prior 12 94(-44%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCApr 2013 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 754034-99 | Drill | Marathon Oil EF LLC | Jan 3, 2013 | Jan 8, 2013 | Apr 2, 2013 | 17,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 28, 2016 | Shiner Unit A O-2-10506 | Eagleville (Eagle Ford-2) | Ensign Natural Resources II LLC | Producing | 12,206 |
Formation tops
As filed on W-2/G-1. Subsea from 434 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wilcox | 8,515 | -8,081 |
| Escondido | 10,089 | -9,655 |
| Eagle Ford | 11,289 | -10,855 |
| Anacacho | 11,393 | -10,959 |
| Austin Chalk | 11,628 | -11,194 |
| Eagle Ford | 12,289 | -11,855 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,557 | 15,627 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,844 | 12.25 | 1,564 S |
| 5.5 | 15,935 | 8.5 | 1,995 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 | Nov 7, 2016 | Nov 3, 2016 | — |
| 00 | Nov 1, 2016 | Oct 27, 2016 | — |
| 00 | Oct 31, 2016 | Oct 27, 2016 | — |
| 00 | Jul 10, 2013 | May 10, 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 42-285-33683 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-33683 → 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/28533683, documented in the API reference.