WELL · 42-399-35113 · DISTRICT 7
Nemo-Pendulum #1
Runnels County · Fennell (King Sand) field · Vertical
Nemo-Pendulum #1 (API 42-399-35113) is a plugged well in Runnels County, plugged May 23, 2023, last operated by Williston Exploration Serv LLC.
The RRC has issued one drilling permit (amended once), issued April 10, 2008, permitted to 3,300 ft.
It was permitted by Horizon Exploration Services and has since transferred to Williston Exploration Serv LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Breckenridge, Kingl Lime, Cisco.
Its 2 leases have reported 20.3K barrels of oil since December 2008, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Williston Exploration Serv LLC
Permitted by Horizon Exploration Services; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Dec 6, 2013 · (713) 447-0077
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Williston Exploration Serv LLC |
| Production reports | Cedar Oil Companythrough Feb 2023 |
| Latest permit | Horizon Exploration ServicesApr 10, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,300
- total depth, ft
- 2
- permits on file
- Apr 10, 2008
- last permit issued
- Dec 18, 2008
- completed
- 20.3K
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 18, 2008
- Shut in
- —
- Plugged
- May 23, 2023
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 2 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Nemo-Pendulum O-9-16809 | Fennell (King Sand) | Williston Exploration Serv, LLC | 1 | 9.4K | 0 | Dec 2008 – Jul 2026 |
| Hord 'A' O-9-18369 | Fennell (King Sand) | Cedar Oil Company | 3 | 10.9K | 0 | Jun 2013 – Aug 2023 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Horizon Exploration ServicesDec 2008 → Jan 2011
- 2Williston Exploration Serv, LLCFeb 2011 → Aug 2011
- 3Cedar Oil CompanyMar 2014 → Feb 2023
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 658260-98 | Drill | Horizon Exploration Services | Jan 16, 2009 | Apr 10, 2008 | Apr 29, 2008 | 3,300 |
| 658260-99 | Drill | Horizon Exploration Services | Mar 27, 2008 | Apr 10, 2008 | Apr 29, 2008 | 3,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16809 | — | — | — | — |
| — | — O-9-18369 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,903 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Breckenridge | 2,718 | -815 |
| Kingl Lime | 2,796 | -893 |
| CiscoCISCO REEF | 2,980 | -1,077 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,837 | 2,846 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 200 | 12.25 | — |
| 4.5 | 3,084 | 7.875 | — |
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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 2, 2014 | Jan 20, 2009 | Yes |
| 00 | Feb 24, 2009 | Jan 20, 2009 | Yes |
| 00 | Jan 30, 2009 | — | — |
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 42-399-35113 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-399-35113 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their 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/39935113, documented in the API reference.