TEXAS · WELLS · TERRY COUNTY · PRENTICE NORTHEAST UNIT LEASE · API 42-445-31721 · DISTRICT 7B
Prentice Northeast Unit #666
Terry County · Prentice (6700) field · Producing · Vertical
- Fields on the latest permit · any of 2
- Prentice · Prentice (6700)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Prentice Northeast Unit #666 (API 42-445-31721) is a well in Terry County operated by Highmark Energy Operating LLC, completed October 20, 2015 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 1995 and 2001, permitted to 7,162 ft.
It was permitted by Xto Energy Inc. and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Rustler, Yates, San Andres, Glorieta.
Its lease has reported 27.6M barrels of oil and 6.52M mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 621 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by XTO Energy Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 9, 2026
- Permits on file
- 23
- Phone
- (469) 214-5299
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Highmark Energy Operating LLC |
| Production reports | Highmark Energy Operating, LLCthrough Apr 2026 |
| Latest permit | XTO Energy Inc.Aug 6, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,162
- total depth, ft
- 2
- permits on file
- Aug 6, 2001
- last permit issued
- Oct 20, 2015
- completed
- 27.6M
- cumulative oil, bbl
- 6.52M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 20, 2015
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
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 621 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Prentice Northeast Unit O-11-18607 | Prentice (6700) | Highmark Energy Operating, LLC | 621 | 27.6M | 6.52M | Jan 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 320,398 · prior 12 335,299(-4%)
Gas, mcf lease total
Last 12 months 98,957 · prior 12 96,724(+2%)
Wells named Prentice Northeast Unit
Highmark Energy Operating LLC's other wells filed under this lease name in Terry County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Amoco Production CompanyJan 1993 → Dec 1993
- 2Cross Timbers Operating CompanyJan 1994 → May 2001
- 3XTO Energy Inc.Jun 2001 → Dec 2021
- 4Highmark Energy Operating, LLCJan 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 512153-99 | Drill | XTO Energy Inc. | Aug 2, 2001 | Aug 6, 2001 | Aug 7, 2001 | 7,100 |
| 437766-99 | Drill | Cross Timbers Operating Company | Jul 12, 1995 | Jul 17, 1995 | Aug 9, 1995 | 7,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 20, 2015 | Prentice Northeast Unit O-11-18607 | Prentice (6700) | Highmark Energy Operating LLC | Producing | 7,162 |
| Oct 20, 2015 | Prentice Northeast Unit O-11-18607 | Prentice (6700) | Highmark Energy Operating LLC | Producing | 7,162 |
Formation tops
As filed on W-2/G-1. Subsea from 3,543 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| RustlerRUSTLER ANHYDRITE | 2,426 | 1,117 |
| Yates | 3,146 | 397 |
| San Andres | 4,586 | -1,043 |
| Glorieta | 5,877 | -2,334 |
| Clear ForkUPPER CLEARFORK | 6,111 | -2,568 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,927 | 6,012 | Perforated |
| 6,612 | 6,657 | Perforated |
| 6,878 | 6,975 | Perforated |
| 6,878 | 7,007 | Perforated |
| 7,078 | 7,162 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,439 | 12.25 | 950 S |
| 5.5 | 7,090 | 7.875 | 1,250 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 | Apr 4, 2016 | Mar 25, 2016 | — |
| 00 | Mar 14, 2016 | Feb 25, 2016 | — |
| 00 | Mar 9, 2016 | Mar 4, 2016 | — |
| 00 | Jun 11, 1998 | Feb 13, 1998 | — |
| 00 | Jan 23, 1996 | Dec 8, 1995 | Yes |
| 00 | Dec 14, 1995 | — | — |
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 42-445-31721 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-445-31721 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 77
- bbl, last 12 reported months
- 135K
- bbl, all reported
- Nov 2001
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000086993 | H-1 Injection | Canceled Jun 14, 2002 | 2,500 | 2,800 | 5,750–7,300 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 77 · prior 12 12,975(-99%)
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/44531721, documented in the API reference.