WELL · 42-105-41256 · DISTRICT 7
Shannon Estate #20
Crockett County · Olson field · Producing · Vertical
Shannon Estate #20 (API 42-105-41256) is a well in Crockett County operated by Aspen Operating Company L.L.C., completed July 20, 2011 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 17, 2011, permitted to 2,900 ft.
Completion filings report 2 formation tops, including San Andres, Grayburg.
Its lease has reported 1.32M barrels of oil and 25 mcf of gas since January 1993, last reporting in July 2026. The lease carries 50 wells, so these are lease totals, not this well alone.
Operator of record
Aspen Operating Company L.L.C.
Fort Worth, TX · P-5 Y, filed Nov 4, 2025 · 124 permits on file · (817) 455-2311
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Aspen Operating Company L.L.C. |
| Production reports | Aspen Operating Company, L.L.C.through Apr 2026 |
| Latest permit | Aspen Operating Company, L.L.C.Feb 17, 2011 |
- 2,900
- total depth, ft
- 1
- permits on file
- Feb 17, 2011
- last permit issued
- Jul 20, 2011
- completed
- 1.32M
- cumulative oil, bbl
- 25
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 20, 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 50 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shannon Estate O-9-1138 | Olson | Aspen Operating Company, L.L.C. | 50 | 1.32M | 25 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 143,246 · prior 12 156,924(-9%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Grasha, Matthew P.Jan 1993 → Sep 1993
- 2Las Animas Production CompanyOct 1993 → Sep 1994
- 3Gresham Oil & Gas (USA) Inc.Oct 1994 → Mar 1996
- 4Tracy ProductionApr 1999 → Oct 2007
- 5Aspen Operating Company, L.L.C.Mar 2008 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 710231-99 | Drill | Aspen Operating Company, L.L.C. | Feb 14, 2011 | Feb 17, 2011 | Apr 29, 2011 | 2,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-1138 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,541 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 2,112 | 429 |
| Grayburg | 2,141 | 400 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,310 | 2,342 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 808 | 17.5 | 675 S |
| 8.625 | 2,402 | 12.25 | 870 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 | Jan 7, 2013 | Oct 31, 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 42-105-41256 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-41256 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/10541256, documented in the API reference.