TEXAS · WELLS · HOWARD COUNTY · CHALK LEASE · API 42-227-31214 · DISTRICT 7B
Chalk #20
Howard County · Howard Glasscock field · Vertical
Chalk #20 (API 42-227-31214) is a plugged well in Howard County, plugged August 25, 2009, last operated by Legacy Reserves Operating LP.
The RRC has issued one drilling permit, issued June 20, 1977, permitted to 3,100 ft.
It was permitted by Samedan Oil Corporation and has since transferred to Legacy Reserves Operating LP on the wellbore schedule.
Its lease has reported 491K barrels of oil and 37.8K mcf of gas since January 1993, with no volume in the three years through April 2026. The lease carries 33 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Samedan Oil Corporation; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Inactive (I)
- P-5 last filed
- May 19, 2025
- Permits on file
- 439
- Phone
- (720) 244-4898
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Legacy Reserves Operating LP |
| Production reports | Legacy Reserves Operating LPthrough Nov 2011 |
| Latest permit | Samedan Oil CorporationJun 20, 1977 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,100
- total depth, ft
- 1
- permits on file
- Jun 20, 1977
- last permit issued
- Jan 24, 1978
- completed
- 491K
- cumulative oil, bbl
- 37.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Nov 2011
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 24, 1978
- Shut in
- —
- Plugged
- Aug 25, 2009
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 33 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk O-10-2805 | Howard Glasscock | Legacy Reserves Operating LP | 33 | 491K | 37.8K | Jan 1993 – Nov 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.
- 1Samedan Oil CorporationJan 1993 → Sep 1999
- 2Pitco Investments, Ltd.Oct 1999 → Jun 2005
- 3Brothers Production Company Inc.Jul 2005 → Mar 2006
- 4Legacy Reserves Operating LPApr 2006 → Nov 2011
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 1067-99 | Other | Samedan Oil Corporation | Jun 20, 1977 | Jun 20, 1977 | — | 3,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 24, 1978 | Chalk O-10-2805 | Howard Glasscock | Legacy Reserves Operating LP | Plugged | — |
| — | Chalk O-10-19021 | Howard-Glasscock (Glorieta) | Samedan Oil Corporation | Plugged | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| — | 2,893 | Perforated |
| — | 3,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 106 | 12.25 | 100 S |
| 5.5 | 2,959 | 7.875 | 500 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 | Jan 12, 1984 | Jan 27, 1978 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-227-31214 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-31214 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/22731214, documented in the API reference.