WELL · 42-251-30107 · DISTRICT 5
Atlas Mildred #1
Johnson County · Wildcat field · Vertical
Atlas Mildred #1 (API 42-251-30107) is a well in Johnson County operated by Union Pacific Resources Company, completed December 11, 1997.
The RRC has issued 2 drilling permits between 1997 and 1999, permitted to 9,500 ft.
Completion filings report 4 formation tops, including Atoka, Marble Falls, Barnett, Viola.
No lease production has been reported under this well’s leases.
Operator of record
Union Pacific Resources Company
Fort Worth, TX · P-5 Inactive, filed May 2, 2000 · 5,638 permits on file · (817) 321-7424
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Union Pacific Resources Company |
| Production reports | Eagleridge Operating, LLCthrough Apr 2026 |
| Latest permit | Union Pacific Resources CompanyFeb 15, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,500
- total depth, ft
- 2
- permits on file
- Feb 15, 1999
- last permit issued
- Dec 11, 1997
- completed
- 0
- cumulative oil, bbl
- 489K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 1998 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 11, 1997
- Shut in
- —
- Plugged
- —
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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Atlas, Mildred G-5-171877 | Antioch (Barnett Shale) | Eagleridge Operating, LLC | 1 | 0 | 489K | Sep 1998 – Jul 2026 |
| Atlas, Mildred O-5-3610 | Wildcat | Union Pacific Resources Company | 1 | 0 | 0 | May 1998 – Mar 1999 |
| Atlas, Mildred G-5-179450 | Wildcat | Chevron U. S. A. Inc. | 1 | 0 | 0 | Oct 1998 – Oct 1998 |
Gas, mcf lease total
Last 12 months 2,284 · prior 12 2,266(+1%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Union Pacific Resources CompanySep 1998 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Feb 2002
- 3Bengal Gas Transmission Co.Mar 2002 → Aug 2003
- 4J-W Operating Co.Feb 2004 → Jun 2016
- 5Aethon Energy Operating LLCJul 2016 → Sep 2018
- 61849 Energy Partners Oprtng, LLCOct 2018 → Feb 2022
- 7Eagleridge Operating, LLCMar 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 481095-99 | Field transfer | Union Pacific Resources Company | Nov 23, 1998 | Feb 15, 1999 | — | 9,500 |
| 460748-99 | Drill | Chevron U. S. A. Inc. | Apr 4, 1997 | Apr 4, 1997 | Aug 6, 1997 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-5-171877 | — | — | — | — |
| — | — G-5-179450 | — | — | — | — |
| — | — O-5-3610 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 716 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Atoka | 1,712 | -996 |
| Marble Falls | 7,400 | -6,684 |
| BarnettBARNETT SHALE | 7,923 | -7,207 |
| BarnettBARNETT SHALE | 7,924 | -7,208 |
| Viola | 8,248 | -7,532 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,140 | 8,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,059 | 12.25 | 1,155 S |
| 4.5 | 8,378 | 7.875 | 470 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 16, 2000 | Feb 26, 1998 | Yes |
| 00 | Nov 13, 2000 | — | — |
| 00 | Mar 22, 1999 | Oct 23, 1998 | — |
| 00 | Feb 26, 1999 | — | — |
| 00 | Jun 15, 1998 | Mar 23, 1998 | Yes |
| 00 | May 20, 1998 | — | — |
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 42-251-30107 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-251-30107 → 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/25130107, documented in the API reference.