WELL · 42-255-31645 · DISTRICT 2
Chesnutt 01 #01H
Karnes County · Sugarkane (Eagle Ford) field · Producing · Horizontal
Chesnutt 01 #01H (API 42-255-31645) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed May 13, 2010 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits in 2010, permitted to 19,000 ft.
It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Midway, Austin Chalk.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Pioneer Natural Res. USA, Inc.Sep 23, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 19,000
- total depth, ft
- 2
- permits on file
- Sep 23, 2010
- last permit issued
- May 13, 2010
- completed
- 0
- cumulative oil, bbl
- 1.84M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 13, 2010
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 |
|---|---|---|---|---|---|---|
| Chesnutt 01 G-2-256597 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 1 | 0 | 1.84M | Apr 2010 – Jul 2026 |
Gas, mcf lease total
Last 12 months 10,584 · prior 12 21,576(-51%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Apr 2010 → Sep 2019
- 2Ensign Operating LLCOct 2019 → Feb 2023
- 3Marathon Oil EF LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 702351-99 | Field transfer | Pioneer Natural Res. USA, Inc. | Sep 17, 2010 | Sep 23, 2010 | Feb 11, 2010 | 19,000 |
| 690132-99 | Drill | Pioneer Natural Res. USA, Inc. | Jan 22, 2010 | Feb 1, 2010 | Feb 11, 2010 | 19,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-256597 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 379 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 9,560 | -9,181 |
| Austin ChalkAUSTIN CHALK-UPPER | 12,844 | -12,465 |
| Austin ChalkAUSTIN CHALK-LOWER | 13,039 | -12,660 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 13,223 | 17,350 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 3,800 | 17.5 | 3,150 S |
| 9.625 | 9,760 | 12.25 | 485 S |
| — | 13,307 | — | — |
| 5.5 | 17,566 | 8.5 | 1,025 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 | Dec 3, 2010 | Sep 17, 2010 | — |
| 00 | Aug 3, 2010 | Jun 1, 2010 | Yes |
| 00 | Jul 23, 2010 | — | 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 42-255-31645 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-31645 → 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/25531645, documented in the API reference.