WELL · 42-503-40416 · DISTRICT 9
Downey Mary Clark #207
Young County · Young County Regular field · Vertical
Downey Mary Clark #207 (API 42-503-40416) is a well in Young County operated by Karper Company The, completed April 20, 1992.
The RRC has issued 2 drilling permits (amended once) between 1992 and 2016, permitted to 4,999 ft.
It was permitted by Karper Oil & Gas Corporation and has since transferred to Karper Company The on the wellbore schedule.
Completion filings report 3 formation tops, including Palo Pinto, Capps, Smithwick.
Its 3 leases have reported 98.2K barrels of oil and 393K mcf of gas since January 1993, last reporting in July 2026. The leases carry 19 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Karper Oil & Gas Corporation; the EWA schedule now lists a different operator.
Graham, TX · P-5 Y, filed Dec 6, 2002 · 54 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Karper Company The |
| Production reports | Karper Oil & Gas Corporationthrough Feb 2026 |
| Latest permit | Karper Oil & Gas CorporationNov 2, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,999
- total depth, ft
- 3
- permits on file
- Nov 2, 2016
- last permit issued
- Apr 20, 1992
- completed
- 98.2K
- cumulative oil, bbl
- 393K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 20, 1992
- Shut in
- —
- Plugged
- —
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 3 leases this well is completed on; they carry 19 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ran-Mag Unit O-13-11793 | Lupton-McLester | Karper Oil & Gas Corporation | 17 | 68.3K | 52.9K | Jan 1993 – Jul 2026 |
| Downey, Mary Clark O-13-28547 | Heather Conglomerate | Karper Oil & Gas Corporation | 1 | 29.9K | 341K | Jan 1993 – Jul 2026 |
| Downey, Mary Clark O-13-28299 | Young County Regular | Karper Company, The | 1 | 0 | 0 | Jan 1993 – Jul 1993 |
Oil, barrels lease total
Last 12 months 130 · prior 12 43(+202%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Karper Company, TheJan 1993 → Feb 2003
- 2Karper Oil & Gas CorporationMar 2003 → Feb 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 818894-99 | Recompletion | Karper Oil & Gas Corporation | Sep 28, 2016 | Nov 2, 2016 | Jun 27, 2016 | 4,417 |
| 397394-98 | Field transfer | Karper Company, The | Dec 4, 1992 | Apr 7, 1992 | — | 4,999 |
| 397394-99 | Drill | Karper Company, The | Mar 18, 1992 | Apr 7, 1992 | Apr 7, 1992 | 4,999 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-11793 | — | — | — | — |
| — | — O-13-28299 | — | — | — | — |
| — | — O-13-28547 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,189 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Palo Pinto | 1,410 | -221 |
| Capps | 1,950 | -761 |
| Smithwick | 3,700 | -2,511 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,850 | 3,870 | Perforated |
| 4,312 | 4,324 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 310 | 10.75 | 185 S |
| 7.875 | 4,417 | 4.5 | 361 S |
| 4.5 | 4,417 | 7.875 | 361 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 | Nov 17, 2016 | Jul 19, 2016 | — |
| 00 | Sep 22, 1994 | Sep 6, 1994 | — |
| 00 | May 6, 1993 | Dec 1, 1992 | — |
| 00 | Apr 28, 1993 | May 5, 1992 | Yes |
| 00 | May 29, 1992 | May 5, 1992 | Yes |
| 00 | May 11, 1992 | — | — |
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 42-503-40416 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-503-40416 → 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/50340416, documented in the API reference.