TEXAS · WELLS · REEVES COUNTY · GREATHOUSE C21-6 UNIT LEASE · API 42-389-35703 · DISTRICT 7B
Greathouse C21-6 Unit #4H
Reeves County · Phantom (Wolfcamp) field · Producing · Horizontal
Greathouse C21-6 Unit #4H (API 42-389-35703) is a horizontal well in Reeves County operated by Coterra Energy Operating CO., completed August 24, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 15, 2017, permitted to 10,511 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, Delaware, Bell Canyon, Cherry Canyon.
Its lease has reported 408K barrels of oil and 2.54M mcf of gas since August 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.Feb 15, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,511
- total depth, ft
- 1
- permits on file
- Feb 15, 2017
- last permit issued
- Aug 24, 2017
- completed
- 408K
- cumulative oil, bbl
- 2.54M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2017 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 24, 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 |
|---|---|---|---|---|---|---|
| Greathouse C21-6 Unit G-10-283039 | Phantom (Wolfcamp) | Coterra Energy Operating Co. | 1 | 408K | 2.54M | Aug 2017 – Apr 2026 |
Gas, mcf lease total
Last 12 months 124,189 · prior 12 143,235(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cimarex Energy Co.Sep 2017 → Oct 2025
- 2Coterra Energy Operating Co.Nov 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 822326-99 | Drill | Cimarex Energy Co. | Jan 20, 2017 | Feb 15, 2017 | Apr 20, 2017 | 11,680 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 24, 2017 | Greathouse C21-6 Unit G-10-283039 | Phantom (Wolfcamp) | Coterra Energy Operating Co. | Producing | 10,511 |
Formation tops
As filed on W-2/G-1. Subsea from 3,053 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| CastileCASTILLE | 1,839 | 1,214 |
| Delaware | 3,495 | -442 |
| Bell Canyon | 3,524 | -471 |
| Cherry Canyon | 4,467 | -1,414 |
| Bone SpringBONE SPRINGS | 7,098 | -4,045 |
| Wolfcamp | 10,250 | -7,197 |
| DelawareDELAWARE CONSOLIDATED GAS | — | — |
| DelawareFORD-DELAWARE | — | — |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,543 | 18,364 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,456 | 12.25 | 1,450 S |
| 7 | 10,700 | 8.75 | 800 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 | Jan 24, 2018 | Oct 19, 2017 | 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 | 9,980 to 18,475 | Sep 27, 2019run May 23, 2017 | 11.9 |
"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 42-389-35703 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35703 → 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/38935703, documented in the API reference.