WELL · 42-173-37471 · DISTRICT 8
Thomas #4101HC
Glasscock County · Garden City S. (Wolfcamp) field · Shut IN · Horizontal
Thomas #4101HC (API 42-173-37471) is a horizontal well in Glasscock County operated by Lake Crystal Operating LLC, completed June 16, 2017 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued November 16, 2016, permitted to 10,000 ft.
It was permitted by Cinnabar Operating, LLC and has since transferred to Lake Crystal Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 126K barrels of oil and 298K mcf of gas since May 2016, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cinnabar Operating, LLC; the EWA schedule now lists a different operator.
Sugar Land, TX · P-5 Y, filed Oct 4, 2025 · (314) 805-9163
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Lake Crystal Operating LLC |
| Production reports | Lake Crystal Operating LLCthrough Mar 2026 |
| Latest permit | Cinnabar Operating, LLCNov 16, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 2
- permits on file
- Nov 16, 2016
- last permit issued
- Jun 16, 2017
- completed
- 126K
- cumulative oil, bbl
- 298K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2016 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 16, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Thomas O-10-47662 | Garden City, S. (Wolfcamp) | Lake Crystal Operating LLC | 4 | 126K | 298K | May 2016 – Jul 2026 |
Oil, barrels lease total
Last 12 months 524 · prior 12 741(-29%)
Gas, mcf lease total
Last 12 months 1,567 · prior 12 3,349(-53%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cinnabar Operating, LLCMay 2016 → Oct 2020
- 2Kem Energy, Inc.Nov 2020 → Jan 2021
- 3Lake Crystal Operating LLCFeb 2021 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 819110-98 | Drill | Cinnabar Operating, LLC | Dec 9, 2016 | Nov 16, 2016 | Feb 16, 2017 | 10,000 |
| 819110-99 | Drill | Cinnabar Operating, LLC | Oct 4, 2016 | Nov 16, 2016 | Feb 16, 2017 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47662 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,527 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 598 | 1,929 |
| Yates | 1,533 | 994 |
| Seven Rivers | 1,892 | 635 |
| Queen | 2,136 | 391 |
| Grayburg | 2,237 | 290 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 2,337 | 190 |
| Clear ForkCLEARFORK | — | — |
| Glorieta | — | — |
| Spraberry | — | — |
| Wichita-AlbanyWICHITA ALBANY | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,440 | 15,704 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 422 | 17.5 | 465 S |
| 9.625 | 8,455 | 12.25 | 975 S |
| 5.5 | 15,960 | 8.5 | 2,654 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 7, 2017 | Jul 11, 2017 | Yes |
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 42-173-37471 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-37471 → 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/17337471, documented in the API reference.