TEXAS · WELLS · WARD COUNTY · CIMAREX UNIVERSITY '18-31' LEASE · API 42-475-35285 · DISTRICT 7B
Cimarex University 18-31 #1H
Ward County · Two Georges (Bone Spring) field · Shut In · Horizontal
- Fields on the latest permit · any of 2
- Two Georges (Bone Spring) · War-Wink, W. (Wolfcamp)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Cimarex University 18-31 #1H (API 42-475-35285) is a horizontal well in Ward County operated by Apache Corporation, completed March 10, 2008 and listed as shut in on the RRC schedule, shut in May 1, 2023.
The RRC has issued one drilling permit, issued October 1, 2007, permitted to 11,294 ft.
It was permitted by Cimarex Energy CO. Of Colorado and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report one formation top, including Bone Spring.
Its lease has reported 77.9K barrels of oil and 317K mcf of gas since March 2008, with no volume in the three years through April 2026.
Operator of record
Permitted by Cimarex Energy Co. of Colorado; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 9,758
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Mar 2023 |
| Latest permit | Cimarex Energy Co. of ColoradoOct 1, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,294
- total depth, ft
- 1
- permits on file
- Oct 1, 2007
- last permit issued
- Mar 10, 2008
- completed
- 77.9K
- cumulative oil, bbl
- 317K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2008 THROUGH Mar 2023
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 10, 2008
- Shut in
- May 1, 2023
- 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 |
|---|---|---|---|---|---|---|
| Cimarex University '18-31' O-10-38805 | Two Georges (Bone Spring) | Apache Corporation | 1 | 77.9K | 317K | Mar 2008 – Mar 2023 |
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.
- 1Cimarex Energy Co. of ColoradoMar 2008 → Mar 2009
- 2Cimarex Energy Co.Apr 2009 → Aug 2018
- 3Callon Petroleum Operating CoSep 2018 → Mar 2023
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 646798-99 | Drill | Cimarex Energy Co. of Colorado | Sep 26, 2007 | Oct 1, 2007 | Nov 2, 2007 | 11,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 10, 2008 | Cimarex University 18-31 O-10-38805 | Two Georges (Bone Spring) | Apache Corporation | Shut In · shut in May 1, 2023 | 11,294 |
Formation tops
As filed on W-2/G-1. Subsea from 2,827 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Bone Spring3RD BONE SPRINGS | 10,337 | -7,510 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,673 | 13,330 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 810 | 17.5 | 740 S |
| 9.625 | 5,180 | 12.25 | 1,675 S |
| 5.5 | 11,560 | 8.75 | 1,410 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 | Dec 5, 2008 | May 27, 2008 | Yes |
| 00 | Nov 10, 2008 | — | — |
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 42-475-35285 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-475-35285 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/47535285, documented in the API reference.