TEXAS · WELLS · HOOD COUNTY · SASS UNIT LEASE · API 42-221-31405 · DISTRICT 7C
Sass Unit #4H
Hood County · Newark East (Barnett Shale) field · Producing · Horizontal
Sass Unit #4H (API 42-221-31405) is a horizontal well in Hood County operated by Eagleridge Operating LLC, completed March 18, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 12, 2007, permitted to 5,823 ft.
It was permitted by Quicksilver Resources Inc. and has since transferred to Eagleridge Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Hood, Marble Falls, Barnett.
Its lease has reported 2.38K barrels of oil and 1.4M mcf of gas since April 2007, last reporting volume in April 2026.
Operator of record
Permitted by Quicksilver Resources Inc.; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Apr 8, 2026
- Permits on file
- 129
- Phone
- (214) 295-6704
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Eagleridge Operating LLC |
| Production reports | Diversified Production LLCthrough Apr 2026 |
| Latest permit | Quicksilver Resources Inc.Jun 12, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,823
- total depth, ft
- 1
- permits on file
- Jun 12, 2007
- last permit issued
- Mar 18, 2008
- completed
- 2.38K
- cumulative oil, bbl
- 1.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · APR 2008 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 18, 2008
- 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.
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sass Unit G-13-238047 | Newark, East (Barnett Shale) | Diversified Production LLC | 1 | 2.38K | 1.4M | Apr 2007 – Apr 2026 |
Gas, mcf lease total
Last 12 months 41,374 · prior 12 47,058(-12%)
Wells named Sass Unit
Eagleridge Operating LLC's other wells filed under this lease name in Hood 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.
- 1Quicksilver Resources Inc.Apr 2008 → Dec 2015
- 2Barnett Shale Operating LLCFeb 2012 → Apr 2012
- 3Bluestone Natural Res. II, LLCMay 2016 → Dec 2019
- 4Blackbeard Operating, LLCJan 2020 → Jun 2021
- 5Diversified Production LLCJul 2021 → Jun 2026
- 6Eagleridge Operating, LLCJul 2026 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 640074-99 | Drill | Quicksilver Resources Inc. | Jun 4, 2007 | Jun 12, 2007 | Aug 8, 2007 | 6,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 18, 2008 | Sass Unit G-13-238047 | Newark East (Barnett Shale) | Eagleridge Operating LLC | Producing | 5,823 |
Formation tops
As filed on W-2/G-1. Subsea from 710 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Hood | 5,038 | -4,328 |
| Marble Falls | 5,278 | -4,568 |
| BarnettBARNETT SHALE | 5,950 | -5,240 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,010 | 10,160 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 816 | 12.25 | 325 S |
| 5.5 | 10,236 | 8.75 | 892 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 24, 2008 | May 28, 2008 | Yes |
| 00 | Aug 22, 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 42-221-31405 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-221-31405 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/22131405, documented in the API reference.