WELL · 42-371-37275 · DISTRICT 8
Sapphire #1
Pecos County · Hokit (Penn Upper) field · Shut IN · Vertical
Sapphire #1 (API 42-371-37275) is a well in Pecos County operated by Mlc Operating LP, completed October 14, 2003 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 6, 2003, permitted to 10,500 ft.
It was permitted by Ricks Exploration, Inc. and has since transferred to Mlc Operating LP on the wellbore schedule.
Completion filings report 4 formation tops, including Wolfcamp, Strawn, Woodford, Devonian.
Its lease has reported 26.3K barrels of oil and 26.5K mcf of gas since October 2003, last reporting in July 2026.
Operator of record
Permitted by Ricks Exploration, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Apr 4, 2026 · 96 permits on file · (432) 425-9536
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | MLC Operating LP |
| Production reports | MLC Operating, LPthrough Oct 2012 |
| Latest permit | Ricks Exploration, Inc.May 6, 2003 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 2
- permits on file
- May 6, 2003
- last permit issued
- Oct 14, 2003
- completed
- 26.3K
- cumulative oil, bbl
- 26.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2003 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 14, 2003
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sapphire O-10-37233 | Hokit (Penn, Upper) | MLC Operating, LP | 1 | 26.3K | 26.5K | Oct 2003 – Jul 2026 |
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.
- 1Concho Exploration IncOct 2003 → Jan 2004
- 2Chesapeake Operating, Inc.Jun 2004 → Mar 2010
- 3Three Rivers Operating Co LLCApr 2010 → May 2011
- 4MLC Operating, LPJun 2011 → Oct 2012
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 531445-98 | Drill | Ricks Exploration, Inc. | Nov 14, 2003 | May 6, 2003 | — | 10,500 |
| 531445-99 | Drill | Rubicon Oil & Gas, LLC | May 2, 2003 | May 6, 2003 | Jul 13, 2003 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-37233 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,874 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,626 | 9,648 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 855 | 17.5 | 880 S |
| 8.625 | 2,980 | 11 | 1,920 S |
| 5.5 | 10,496 | 7.875 | 400 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 | Apr 13, 2004 | Nov 10, 2003 | Yes |
| 00 | Mar 23, 2004 | — | — |
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 42-371-37275 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-37275 → 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/37137275, documented in the API reference.