WELL · 42-439-30647 · DISTRICT 9
Lonzo-Medlin #4
Tarrant County · Newark East (Barnett Shale) field · Directional
Lonzo-Medlin #4 (API 42-439-30647) is a plugged well in Tarrant County, plugged March 29, 2011, last operated by Quicksilver Resources Inc..
The RRC has issued one drilling permit, issued June 23, 2003, permitted to 8,300 ft.
It was permitted by Winchester Production Company and has since transferred to Quicksilver Resources Inc. on the wellbore schedule.
Completion filings report 4 formation tops, including Caddo, Marble Falls, Barnett, Viola.
Operator of record
Permitted by Winchester Production Company; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Delinquent, filed Feb 8, 2016 · 1,778 permits on file · (817) 665-5572
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Quicksilver Resources Inc. |
| Production reports | Encana Oil & Gas(usa) Inc.through Sep 2008 |
| Latest permit | Winchester Production CompanyJun 23, 2003 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,300
- total depth, ft
- 1
- permits on file
- Jun 23, 2003
- last permit issued
- Aug 27, 2004
- completed
- 0
- cumulative oil, bbl
- 158K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2003 THROUGH Mar 2011
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 27, 2004
- Shut in
- —
- Plugged
- Mar 29, 2011
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 |
|---|---|---|---|---|---|---|
| Lonzo-Medlin G-13-199480 | Newark, East (Barnett Shale) | Quicksilver Resources Inc. | 1 | 0 | 158K | Jul 2003 – Mar 2011 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Winchester Production CompanyAug 2004 → Dec 2004
- 2Encana Oil & Gas(usa) Inc.Jan 2005 → Sep 2008
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 533389-99 | Drill | Winchester Production Company | Jun 23, 2003 | Jun 23, 2003 | Jun 26, 2003 | 8,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-13-199480 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 627 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CaddoCADDO LIME | 3,700 | -3,073 |
| Marble Falls | 6,800 | -6,173 |
| Marble Falls | 7,038 | -6,411 |
| BarnettUPPER BARNETT SHALE | 7,300 | -6,673 |
| BarnettUPPER BARNETT SAHLE | 7,402 | -6,775 |
| BarnettUPPER BARNETT SHALE | 7,402 | -6,775 |
| Viola | 7,570 | -6,943 |
| Viola | 7,790 | -7,163 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,406 | 7,489 | Perforated |
| 7,406 | 7,667 | Perforated |
| 7,533 | 7,543 | Perforated |
| 7,533 | 7,722 | Perforated |
| 7,568 | 7,580 | Perforated |
| 7,624 | 7,630 | Perforated |
| 7,656 | 7,667 | Perforated |
| 7,676 | 7,722 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,255 | 12.25 | 600 S |
| 5.5 | 7,847 | 7.875 | 350 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 2, 2006 | Jun 16, 2006 | — |
| 00 | Aug 8, 2006 | Mar 27, 2006 | — |
| 00 | Dec 27, 2004 | Sep 24, 2004 | — |
| 00 | Apr 6, 2004 | Jan 27, 2004 | Yes |
| 00 | Mar 3, 2004 | — | — |
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 42-439-30647 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-439-30647 → 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/43930647, documented in the API reference.