TEXAS · WELLS · HOWARD COUNTY · CHALK ESTATE LEASE · API 42-227-33922 · DISTRICT 7B
Chalk Estate #20
Howard County · Howard-Glasscock (Glorieta) field · Vertical
Chalk Estate #20 (API 42-227-33922) is a plugged well in Howard County, plugged September 8, 2005, last operated by Conocophillips Company.
The RRC has issued one drilling permit, issued November 19, 1985, permitted to 3,400 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Conocophillips Company on the wellbore schedule.
Completion filings report 7 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its lease has reported 153K barrels of oil and 17.2K mcf of gas since January 1993, last reporting in April 2012. The lease carries 9 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Producing TX. & N.M. Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 3, 2026
- Permits on file
- 3,290
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Conocophillips Company |
| Production reports | Conocophillips Companythrough Nov 2011 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Nov 19, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,400
- total depth, ft
- 1
- permits on file
- Nov 19, 1985
- last permit issued
- Jan 31, 1986
- completed
- 153K
- cumulative oil, bbl
- 17.2K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 31, 1986
- Shut in
- —
- Plugged
- Sep 8, 2005
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk Estate O-10-19030 | Howard-Glasscock (Glorieta) | Conocophillips Company | 9 | 153K | 17.2K | Jan 1993 – Apr 2012 |
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.
- 1Conoco Inc.Jan 1993 → Dec 2002
- 2Conocophillips CompanyJan 2003 → Nov 2011
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 291159-99 | Drill | Mobil Producing TX. & N.M. Inc. | Oct 30, 1985 | Nov 19, 1985 | — | 3,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 31, 1986 | Chalk Estate O-10-19030 | Howard-Glasscock (Glorieta) | Conocophillips Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,418 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,164 | 1,254 |
| Seven Rivers | 1,249 | 1,169 |
| Queen | 1,475 | 943 |
| Grayburg | 1,742 | 676 |
| San Andres | 1,849 | 569 |
| Glorieta | 2,573 | -155 |
| Clear ForkCLEARFORK | 2,964 | -546 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,492 | 2,693 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 255 | 12.25 | 255 S |
| 7 | 3,200 | 8.5 | 850 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 | Mar 4, 1986 | Feb 18, 1986 | Yes |
| 00 | Feb 26, 1986 | — | — |
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 42-227-33922 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-33922 → 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/22733922, documented in the API reference.