WELL · 42-255-31801 · DISTRICT 2
Coy City Ranch a Unit #1H
Karnes County · Eagleville (Eagle Ford-2) field · Shut IN · Horizontal
Coy City Ranch A Unit #1H (API 42-255-31801) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed March 11, 2011 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued November 24, 2010, permitted to 11,500 ft.
It was permitted by Paloma Resources, LLC and has since transferred to Marathon Oil EF LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Anacacho, Austin Chalk, Eagle Ford.
Its lease has reported 2.02M barrels of oil and 3.2M mcf of gas since March 2011, last reporting in July 2026. The lease carries 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Paloma Resources, LLC; 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 | Paloma Resources, LLCNov 24, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,500
- total depth, ft
- 3
- permits on file
- Nov 24, 2010
- last permit issued
- Mar 11, 2011
- completed
- 2.02M
- cumulative oil, bbl
- 3.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 11, 2011
- 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; they carry 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Coy City Ranch a Unit O-2-9806 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 10 | 2.02M | 3.2M | Mar 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 38,518 · prior 12 80,271(-52%)
Gas, mcf lease total
Last 12 months 60,726 · prior 12 67,538(-10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Paloma Resources, LLCMay 2011 → Jul 2012
- 2Marathon Oil EF LLCAug 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 705807-97 | Drill | Paloma Resources, LLC | Jan 11, 2012 | Nov 24, 2010 | Jan 21, 2011 | 11,500 |
| 705807-98 | Drill | Paloma Resources, LLC | Jan 27, 2011 | Nov 24, 2010 | Jan 21, 2011 | 11,500 |
| 705807-99 | Drill | Paloma Resources, LLC | Nov 22, 2010 | Nov 24, 2010 | Jan 21, 2011 | 11,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-9806 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 407 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| AnacachoANACACHO LIME | — | — |
| Austin Chalk | — | — |
| Eagle FordEAGLEFORD SHALE | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,550 | 11,771 | Perforated |
| 11,870 | 12,151 | Perforated |
| 12,250 | 12,546 | Perforated |
| 12,630 | 12,916 | Perforated |
| 13,000 | 13,246 | Perforated |
| 13,335 | 13,596 | Perforated |
| 13,690 | 13,931 | Perforated |
| 14,020 | 14,271 | Perforated |
| 14,275 | 14,971 | Perforated |
| 14,360 | 14,636 | Perforated |
| 15,055 | 15,291 | Perforated |
| 15,375 | 15,611 | Perforated |
| 15,700 | 25,946 | Perforated |
| 16,030 | 16,276 | Perforated |
| 16,370 | 16,621 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 970 | 17.5 | 630 S |
| 9.625 | 5,696 | 12.25 | 1,990 S |
| 5.5 | 16,695 | 8.5 | 1,855 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 2, 2012 | Oct 8, 2011 | 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 42-255-31801 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-31801 → 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/25531801, documented in the API reference.