TEXAS · WELLS · HOWARD COUNTY · CHALK, MARY LEASE · API 42-227-34132 · DISTRICT 7B
Chalk Mary #75
Howard County · Howard-Glasscock (Glorieta) field · Vertical
Chalk Mary #75 (API 42-227-34132) is a plugged well in Howard County, plugged May 1, 1996, last operated by Conocophillips Company.
The RRC has issued one drilling permit, issued February 13, 1987, permitted to 3,200 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 5 formation tops, including Yates, Queen, Grayburg, San Andres.
Its lease has reported 642K barrels of oil and 188K mcf of gas since the record begins in January 1993, with no volume in the three years through August 2026. The lease carries 29 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.Feb 13, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,200
- total depth, ft
- 1
- permits on file
- Feb 13, 1987
- last permit issued
- Apr 8, 1987
- completed
- 642K
- cumulative oil, bbl
- 188K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH NOV 2011
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 8, 1987
- Shut in
- —
- Plugged
- May 1, 1996
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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 29 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk, Mary O-10-19033 | Howard-Glasscock (Glorieta) | Conocophillips Company | 29 | 642K | 188K | by Jan 1993 – Nov 2011 |
No volumes reported on these leases in the last three years.
Wells named Chalk Mary
Conocophillips Company's other wells filed under this lease name in Howard County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain 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 |
|---|---|---|---|---|---|---|
| 325642-99 | Drill | Mobil Producing TX. & N.M. Inc. | Jan 20, 1987 | Feb 13, 1987 | — | 3,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 8, 1987 | Chalk Mary O-10-19033 | Howard-Glasscock (Glorieta) | Conocophillips Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,496 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,703 | 2,989 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 257 | 12.25 | 160 S |
| 5.5 | 3,200 | 7.875 | 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. 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 | May 26, 1987 | May 4, 1987 | Yes |
| 00 | May 13, 1987 | — | — |
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 42-227-34132 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-34132 → 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/22734132, documented in the API reference.