WELL · 42-177-32465 · DISTRICT 1
Chumchal-Littlefield Unit #1H
Gonzales County · Eagleville (Eagle Ford-1) field · Shut IN · Horizontal
Chumchal-Littlefield Unit #1H (API 42-177-32465) is a horizontal well in Gonzales County operated by Ensign Natural Resources II LLC, completed November 26, 2019 and listed as shut in on the RRC schedule, shut in December 1, 2024.
The RRC has issued one drilling permit, issued January 30, 2012, permitted to 11,410 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 3 formation tops, including Anacacho, Austin Chalk, Eagle Ford.
Its lease has reported 181K barrels of oil and 216K mcf of gas since July 2012, 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 | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2024 |
| Latest permit | Marathon Oil EF LLCJan 30, 2012 |
- 11,410
- total depth, ft
- 1
- permits on file
- Jan 30, 2012
- last permit issued
- Nov 26, 2019
- completed
- 181K
- cumulative oil, bbl
- 216K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 26, 2019
- Shut in
- Dec 1, 2024
- 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 |
|---|---|---|---|---|---|---|
| Chumchal-Littlefield Unit O-1-16013 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 1 | 181K | 216K | Jul 2012 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Gas, mcf lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJul 2012 → Apr 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 732082-99 | Drill | Marathon Oil EF LLC | Jan 20, 2012 | Jan 30, 2012 | May 3, 2012 | 18,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 26, 2019 | Chumchal-Littlefield Unit O-1-16013 | Eagleville (Eagle Ford-1) | Ensign Natural Resources II LLC | Shut IN · shut in Dec 1, 2024 | 11,410 |
Formation tops
As filed on W-2/G-1. Subsea from 313 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anacacho | 10,620 | -10,307 |
| Anacacho | 10,839 | -10,526 |
| Austin Chalk | 10,846 | -10,533 |
| Austin Chalk | 11,050 | -10,737 |
| Eagle Ford | 11,464 | -11,151 |
| Eagle Ford | 11,661 | -11,348 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,850 | 17,164 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 5,008 | 14.75 | 2,305 S |
| 5.5 | 17,270 | 8.75 | 2,010 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 | Mar 30, 2023 | Mar 2, 2023 | — |
| 00 | May 21, 2020 | Feb 25, 2020 | — |
| 00 | Apr 12, 2013 | Feb 11, 2013 | — |
| 00 | Sep 27, 2012 | Jul 30, 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 42-177-32465 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-32465 → 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/17732465, documented in the API reference.