TEXAS · WELLS · ANDREWS COUNTY · SHAFTER LAKE CLEARFORK UNIT LEASE · API 42-003-38284 · DISTRICT 7B
Shafter Lake Clearfork Unit #424W
Andrews County · Shafter Lake (Clear Fork) field · Injection · Vertical
Shafter Lake Clearfork Unit #424W (API 42-003-38284) is a well in Andrews County operated by Highmark Energy Operating LLC, completed December 23, 1997 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued September 19, 1997, permitted to 7,029 ft.
It was permitted by Henry Petroleum Corp. and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including San Andres, Clear Fork, Tubb.
Its lease has reported 5.61M barrels of oil and 1.5M mcf of gas since February 1995, last reporting volume in April 2026. The lease carries 79 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 76.2K barrels injected in the 12 months reported through March 2026.
Operator of record
Permitted by Henry Petroleum Corp.; 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 | Henry Petroleum Corp.Sep 19, 1997 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,029
- total depth, ft
- 1
- permits on file
- Sep 19, 1997
- last permit issued
- Dec 23, 1997
- completed
- 5.61M
- cumulative oil, bbl
- 1.5M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 1995 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 23, 1997
- 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; they carry 79 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shafter Lake Clearfork Unit O-10-34411 | Shafter Lake (Clear Fork) | Highmark Energy Operating, LLC | 79 | 5.61M | 1.5M | Feb 1995 – Apr 2026 |
Oil, barrels lease total
Last 12 months 74,714 · prior 12 76,953(-3%)
Gas, mcf lease total
Last 12 months 6,401 · prior 12 11,994(-47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Henry Petroleum Corp.Feb 1995 → Mar 2001
- 2Henry Petroleum LPApr 2001 → Dec 2008
- 3COG Operating LLCJan 2009 → Dec 2012
- 4Legacy Reserves Operating LPJan 2013 → Feb 2023
- 5Highmark Energy Operating, LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 467437-99 | Drill | Henry Petroleum Corp. | Sep 11, 1997 | Sep 19, 1997 | Nov 29, 1997 | 7,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 23, 1997 | Shafter Lake Clearfork Unit O-10-34411 | Shafter Lake (Clear Fork) | Highmark Energy Operating LLC | Injection | 7,029 |
Formation tops
As filed on W-2/G-1. Subsea from 3,220 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,495 | -1,275 |
| Clear ForkLOWER CLEARFORK | 6,608 | -3,388 |
| Tubb | 6,765 | -3,545 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,664 | 6,893 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,613 | 11 | 535 S |
| 4.5 | 7,029 | 7.875 | 2,050 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 | Sep 17, 1998 | Jan 8, 1998 | Yes |
| 00 | Aug 19, 1998 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jul 30, 2012. 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 San Andres, Clear Fork, Tubb | TIFF | 100 to 7,037 | Jul 30, 2012run Dec 9, 1997 | 1.17 |
"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 42-003-38284 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-38284 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 76.2K
- bbl, last 12 reported months
- 2.55M
- bbl, all reported
- Mar 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000086958 | H-1 Injection | Active | 750 | 2,850 | 5,700–7,000 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 76,190 · prior 12 43,012(+77%)
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/00338284, documented in the API reference.