TEXAS · WELLS · REEVES COUNTY · SENTINEL STATE 55-28 UNIT LEASE · API 42-389-35824 · DISTRICT 7B
Sentinel State 55-28 Unit #1H
Reeves County · Phantom (Wolfcamp) field · Producing · Horizontal
Sentinel State 55-28 Unit #1H (API 42-389-35824) is a horizontal well in Reeves County operated by Coterra Energy Operating CO., completed December 17, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 28, 2017, permitted to 10,406 ft.
It was permitted by Cimarex Energy CO. and has since transferred to Coterra Energy Operating CO. on the wellbore schedule.
Completion filings report 8 formation tops, including Castile, Bell Canyon, Delaware, Cherry Canyon.
Its lease has reported 486K barrels of oil and 2.57M mcf of gas since December 2017, last reporting volume in April 2026.
Operator of record
Permitted by Cimarex Energy Co.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 20, 2026
- Permits on file
- 184
- Phone
- (432) 571-7800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Coterra Energy Operating Co. |
| Production reports | Coterra Energy Operating Co.through Apr 2026 |
| Latest permit | Cimarex Energy Co.Mar 28, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,406
- total depth, ft
- 1
- permits on file
- Mar 28, 2017
- last permit issued
- Dec 17, 2017
- completed
- 486K
- cumulative oil, bbl
- 2.57M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2017 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 17, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Sentinel State 55-28 Unit G-10-284511 | Phantom (Wolfcamp) | Coterra Energy Operating Co. | 1 | 486K | 2.57M | Dec 2017 – Apr 2026 |
Gas, mcf lease total
Last 12 months 206,516 · prior 12 175,429(+18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cimarex Energy Co.Dec 2017 → Oct 2025
- 2Coterra Energy Operating Co.Nov 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 824670-99 | Drill | Cimarex Energy Co. | Mar 21, 2017 | Mar 28, 2017 | Aug 22, 2017 | 11,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 17, 2017 | Sentinel State 55-28 Unit G-10-284511 | Phantom (Wolfcamp) | Coterra Energy Operating Co. | Producing | 10,406 |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| CastileCASTILLE | 1,260 |
| Bell Canyon | 3,856 |
| Delaware | 3,856 |
| Cherry Canyon | 4,835 |
| Bone SpringBONE SPRINGS | 7,339 |
| Wolfcamp | 10,344 |
| DelawareDELAWARE CONSOLIDATED GAS | — |
| DelawareFORD-DELAWARE | — |
| Pennsylvanian | — |
| Permian (undifferentiated)PERMIAN | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,022 | 20,347 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 3,826 | 17.5 | 3,390 S |
| 9.625 | 10,668 | 12.25 | 1,850 S |
| 5.5 | 20,458 | 8.5 | 3,090 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 | Aug 17, 2018 | Apr 18, 2018 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 27, 2019. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Bone Spring, Wolfcamp | TIFF | 9,850 to 20,417 | Sep 27, 2019run Sep 26, 2017 | 2.11 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-389-35824 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35824 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/38935824, documented in the API reference.