WELL · 42-495-31995 · DISTRICT 8
Keystone -16- #6
Winkler County · Keystone SW. (San Andres) field · Vertical
Keystone -16- #6 (API 42-495-31995) is a plugged well in Winkler County, plugged November 16, 2011, last operated by Cimarex Energy CO. Of Colorado.
The RRC has issued one drilling permit, issued October 15, 1985, permitted to 5,200 ft.
It was permitted by Tiburon Petroleum Corporation and has since transferred to Cimarex Energy CO. Of Colorado on the wellbore schedule.
Completion filings report 3 formation tops, including Yates, Queen, San Andres.
Its 2 leases have reported 62.6K barrels of oil and 71.4K mcf of gas since January 1993, last reporting in July 2026. The leases carry 5 wells, so these are lease totals, not this well alone.
Operator of record
Cimarex Energy Co. of Colorado
Permitted by Tiburon Petroleum Corporation; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Feb 4, 2026 · 476 permits on file · (800) 969-4789
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Cimarex Energy Co. of Colorado |
| Production reports | Mineral Technologies, Inc.through Jun 2023 |
| Latest permit | Tiburon Petroleum CorporationOct 15, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,200
- total depth, ft
- 1
- permits on file
- Oct 15, 1985
- last permit issued
- Nov 22, 1985
- completed
- 62.6K
- cumulative oil, bbl
- 71.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 22, 1985
- Shut in
- —
- Plugged
- Nov 16, 2011
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 2 leases this well is completed on; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Keystone -16- O-10-30425 | Keystone, SW. (San Andres) | Mineral Technologies, Inc. | 4 | 62.6K | 71.4K | Jan 1993 – Jul 2026 |
| Keystone -16- O-10-32848 | Keystone, SW. (San Andres) | Cimarex Energy Co. of Colorado | 1 | 0 | 0 | Jan 1993 – Mar 2012 |
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hillin-Simon Oil CompanyJan 1993 → Feb 1998
- 2Mineral Technologies, Inc.Mar 1998 → Jun 2023
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 287849-99 | Drill | Tiburon Petroleum Corporation | Oct 14, 1985 | Oct 15, 1985 | — | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-30425 | — | — | — | — |
| — | — O-10-32848 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,929 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,425 | 504 |
| Queen | 3,343 | -414 |
| San Andres | 3,727 | -798 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,387 | 4,620 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 723 | 12.25 | 500 S |
| 5.5 | 4,715 | 7.875 | 600 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 | Jan 30, 1986 | Jan 17, 1986 | Yes |
| 00 | Jan 28, 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 42-495-31995 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-495-31995 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/49531995, documented in the API reference.