TEXAS · WELLS · TARRANT COUNTY · OLCOTT NORTH A UNIT LEASE · API 42-439-33040 · DISTRICT 7C
Olcott North a Unit #12H
Tarrant County · Newark East (Barnett Shale) field · Producing · Horizontal
Olcott North A Unit #12H (API 42-439-33040) is a horizontal well in Tarrant County operated by Eagleridge Operating LLC, completed March 23, 2012 and listed as producing on the RRC schedule, shut in June 1, 2025.
The RRC has issued one drilling permit (amended once), issued February 11, 2008, permitted to 7,350 ft.
It was permitted by Quicksilver Resources Inc. and has since transferred to Eagleridge Operating LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Marble Falls, Barnett.
Its lease has reported 2.87M mcf of gas since May 2009, last reporting volume in May 2025.
Operator of record
Permitted by Quicksilver Resources Inc.; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Apr 8, 2026
- Permits on file
- 129
- Phone
- (214) 295-6704
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Eagleridge Operating LLC |
| Production reports | Diversified Production LLCthrough May 2025 |
| Latest permit | Quicksilver Resources Inc.Feb 11, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,350
- total depth, ft
- 2
- permits on file
- Feb 11, 2008
- last permit issued
- Mar 23, 2012
- completed
- 0
- cumulative oil, bbl
- 2.87M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2012 THROUGH May 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 23, 2012
- Shut in
- Jun 1, 2025
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 |
|---|---|---|---|---|---|---|
| Olcott North a Unit G-13-252722 | Newark, East (Barnett Shale) | Diversified Production LLC | 1 | 0 | 2.87M | May 2009 – May 2025 |
Gas, mcf lease total
Last 12 months 1 · prior 12 19(-95%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Barnett Shale Operating LLCApr 2012 → Apr 2012
- 2Quicksilver Resources Inc.May 2012 → Dec 2015
- 3Bluestone Natural Res. II, LLCApr 2016 → Dec 2019
- 4Blackbeard Operating, LLCJan 2020 → Jun 2021
- 5Diversified Production LLCJul 2021 → May 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 654063-98 | Drill | Quicksilver Resources Inc. | Aug 18, 2009 | Feb 11, 2008 | May 15, 2009 | 9,000 |
| 654063-99 | Drill | Quicksilver Resources Inc. | Jan 25, 2008 | Feb 11, 2008 | May 15, 2009 | 6,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 23, 2012 | Olcott North a Unit G-13-252722 | Newark East (Barnett Shale) | Eagleridge Operating LLC | Producing · shut in Jun 1, 2025 | 7,350 |
Formation tops
As filed on W-2/G-1. Subsea from 566 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Marble Falls | 6,502 | -5,936 |
| Marble Falls | 6,521 | -5,955 |
| BarnettBARNETT SHALE | 7,074 | -6,508 |
| BarnettBARNETT FORMATION | 7,200 | -6,634 |
| BarnettBARNETT SHALE | 7,614 | -7,048 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,902 | 11,901 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,459 | 12.25 | 457 S |
| 5.5 | 12,037 | 8.75 | 1,372 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Mar 22, 2013 | Sep 19, 2012 | — |
| 00 | Apr 14, 2010 | Aug 19, 2009 | Yes |
| 00 | Nov 17, 2009 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Feb 11, 2013. Cased hole, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Marble Falls, Barnett | TIFF | 6,420 to 12,010 | Feb 11, 2013run May 26, 2009 | 3.10 |
| SURVEYS CASED HOLESpans Marble Falls, Barnett | TIFF | 6,420 to 12,010 | May 3, 2010run May 26, 2009 | 3.41 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-439-33040 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-439-33040 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/43933040, documented in the API reference.