WELL · 42-051-33622 · DISTRICT 3
Lastly Unit #1
Burleson County · Giddings (Austin Chalk-3) field · Horizontal
Lastly Unit #1 (API 42-051-33622) is a plugged horizontal well in Burleson County, plugged January 27, 2021, last operated by Chesapeake Operating L.L.C..
The RRC has issued one drilling permit (amended twice), issued February 23, 2006, permitted to 10,480 ft.
It was permitted by Cml Exploration, LLC and has since transferred to Chesapeake Operating L.L.C. on the wellbore schedule.
Completion filings report 2 formation tops, including Midway, Austin Chalk.
Its lease has reported 46.8K barrels of oil and 657K mcf of gas since February 2008, last reporting in April 2021.
Operator of record
Permitted by CML Exploration, LLC; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Delinquent (D)
- P-5 last filed
- Sep 16, 2024
- Permits on file
- 1,645
- Phone
- (405) 935-3100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Chesapeake Operating L.L.C. |
| Production reports | Dyson Energy Operating, LLCthrough Oct 2017 |
| Latest permit | Patterson Petroleum LLCFeb 23, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,480
- total depth, ft
- 3
- permits on file
- Feb 23, 2006
- last permit issued
- Feb 20, 2008
- completed
- 46.8K
- cumulative oil, bbl
- 657K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2008 THROUGH Apr 2021
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 20, 2008
- Shut in
- —
- Plugged
- Jan 27, 2021
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 |
|---|---|---|---|---|---|---|
| Lastly Unit O-3-25168 | Giddings (Austin Chalk-3) | Chesapeake Operating, L.L.C. | 1 | 46.8K | 657K | Feb 2008 – Apr 2021 |
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.
- 1CML Exploration, LLCFeb 2008 → Mar 2016
- 2Sabalo Operating, LLCMay 2016 → Jul 2016
- 3Dyson Energy Operating, LLCAug 2016 → Aug 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 613461-97 | Drill | CML Exploration, LLC | Feb 19, 2008 | Feb 23, 2006 | Dec 2, 2007 | 10,480 |
| 613461-98 | Drill | Patterson Petroleum LLC | Oct 5, 2007 | Feb 23, 2006 | Dec 2, 2007 | 10,480 |
| 613461-99 | Drill | Patterson Petroleum LP | Feb 1, 2006 | Feb 23, 2006 | — | 10,480 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-25168 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 293 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 6,200 | -5,907 |
| Austin ChalkTOP AUSTIN CHALK | 9,739 | -9,446 |
| Austin ChalkBASE AUSTIN CHALK | 9,886 | -9,593 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,796 | 15,452 | Open hole |
| 9,808 | 14,001 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,850 | 12.25 | 1,168 S |
| 7 | 9,790 | 8.75 | 450 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 | Aug 8, 2008 | Mar 18, 2008 | Yes |
| 00 | Jul 2, 2008 | — | — |
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 42-051-33622 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-051-33622 → 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/05133622, documented in the API reference.