TEXAS · WELLS · UPTON COUNTY · HALFF ESTATE "20" LEASE · API 42-461-34451 · DISTRICT 6E
Halff Estate 20 #9H
Upton County · Amacker-Tippett (Devonian) field · Producing · Horizontal
Halff Estate 20 #9H (API 42-461-34451) is a horizontal well in Upton County operated by Eog Resources Inc., completed February 26, 2004 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 17, 2003, permitted to 11,245 ft.
Completion filings report 3 formation tops, including Barnett, Woodford, Devonian.
Its lease has reported 122K barrels of oil and 1.52M mcf of gas since February 2004, last reporting volume in April 2026.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 2, 2025
- Permits on file
- 16,354
- Phone
- (713) 651-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | EOG Resources Inc. |
| Production reports | EOG Resources, Inc.through Apr 2026 |
| Latest permit | EOG Resources, Inc.Oct 17, 2003 |
- 11,245
- total depth, ft
- 1
- permits on file
- Oct 17, 2003
- last permit issued
- Feb 26, 2004
- completed
- 122K
- cumulative oil, bbl
- 1.52M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2004 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 26, 2004
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 |
|---|---|---|---|---|---|---|
| Halff Estate "20" G-9-205244 | Amacker-Tippett (Devonian) | EOG Resources, Inc. | 1 | 122K | 1.52M | Feb 2004 – Apr 2026 |
Gas, mcf lease total
Last 12 months 24,243 · prior 12 45,949(-47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EOG Resources, Inc.Feb 2004 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 537569-99 | Drill | EOG Resources, Inc. | Oct 15, 2003 | Oct 17, 2003 | Nov 11, 2003 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 26, 2004 | Halff Estate 20 G-9-205244 | Amacker-Tippett (Devonian) | EOG Resources Inc. | Producing | 11,245 |
Formation tops
As filed on W-2/G-1. Subsea from 2,726 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,772 | 15,372 | Perforated |
| 11,778 | 15,858 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 532 | 17.5 | 430 S |
| 9.625 | 4,790 | 12.25 | 2,015 S |
| 7 | 11,297 | 8.75 | 950 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 | May 2, 2005 | Apr 19, 2004 | Yes |
| 00 | Jan 11, 2005 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jul 19, 2007. Sonic. 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 |
|---|---|---|---|---|
| Acoustic PorosityBOREHOLE COMPENSATED SONIC LOGSpans Barnett, Woodford, Devonian | TIFF | 4,793 to 11,956 | Jul 19, 2007run Dec 17, 2003 | — |
"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 42-461-34451 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-34451 → 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/46134451, documented in the API reference.