TEXAS · WELLS · JOHNSON COUNTY · MAHAFFEY, SUE LEASE · API 42-251-30450 · DISTRICT 7C
Mahaffey Sue #1
Johnson County · Newark East (Barnett Shale) field · Producing · Horizontal
Mahaffey Sue #1 (API 42-251-30450) is a horizontal well in Johnson County operated by Formentera Operations LLC, completed January 17, 2006 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 5, 2005, permitted to 6,537 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Formentera Operations LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Big Saline, Atoka, Lwr Marble Falls, Barnett.
Its lease has reported 1.78M mcf of gas since March 2006, last reporting volume in August 2026.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Austin, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 11, 2026
- Permits on file
- 94
- Phone
- (512) 514-5779
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Formentera Operations LLC |
| Production reports | Formentera Operations LLCthrough Aug 2026 |
| Latest permit | Devon Energy Production Co, L.P.Jul 5, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,537
- total depth, ft
- 1
- permits on file
- Jul 5, 2005
- last permit issued
- Jan 17, 2006
- completed
- 0
- cumulative oil, bbl
- 1.78M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · APR 2006 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 17, 2006
- 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 AUG 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 |
|---|---|---|---|---|---|---|
| Mahaffey, Sue G-13-216574 | Newark, East (Barnett Shale) | Formentera Operations LLC | 1 | 0 | 1.78M | Mar 2006 – Aug 2026 |
Gas, mcf lease total
Last 12 months 30,719 · prior 12 38,815(-21%)
Wells named Mahaffey Sue
Formentera Operations LLC's other wells filed under this lease name in Johnson 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.
- 1Devon Energy Production Co, L.P.Apr 2006 → Apr 2018
- 2FDL Operating, LLCMay 2018 → Dec 2021
- 3Venado Operating Company LLCJan 2022 → Mar 2022
- 4Javelin Energy Partners Mgmt LLCApr 2022 → Nov 2025
- 5Formentera Operations LLCDec 2025 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 602936-99 | Drill | Devon Energy Production Co, L.P. | Jul 1, 2005 | Jul 5, 2005 | Sep 18, 2005 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 17, 2006 | Mahaffey Sue G-13-216574 | Newark East (Barnett Shale) | Formentera Operations LLC | Producing | 6,537 |
Formation tops
As filed on W-2/G-1. Subsea from 928 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Big Saline | 5,927 | -4,999 |
| AtokaATOKA CP2 | 5,933 | -5,005 |
| AtokaBASAL ATOKA | 6,387 | -5,459 |
| LWR Marble Falls | 6,389 | -5,461 |
| BarnettBARNETT SHALE | 6,441 | -5,513 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,757 | 7,189 | Perforated |
| 6,757 | 7,762 | Perforated |
| 7,330 | 7,762 | Perforated |
| 7,904 | 8,336 | Perforated |
| 8,477 | 8,909 | Perforated |
| 9,050 | 9,482 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,135 | 12.25 | 430 S |
| 5.5 | 9,573 | 8.5 | 1,610 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 13, 2007 | Jan 16, 2007 | — |
| 00 | Oct 13, 2006 | Mar 16, 2006 | Yes |
| 00 | Jun 27, 2006 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Oct 30, 2008. 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 |
|---|---|---|---|---|
| RESISTIVITY | TIFF | 1,133 to 5,812 | Oct 30, 2008run Sep 26, 2005 | 6.04 |
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 42-251-30450 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-251-30450 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search 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/25130450, documented in the API reference.