WELL · 42-321-32367 · DISTRICT 3
Heffelfinger-Sartwelle #1
Matagorda County · Tidehaven (Frio Upper) field · NO Production · Vertical
Heffelfinger-Sartwelle #1 (API 42-321-32367) is a well in Matagorda County operated by Langston Oil LLC, completed March 11, 2014 and listed as no production on the RRC schedule.
The RRC has issued one drilling permit, issued January 21, 2014, permitted to 9,200 ft.
It was permitted by SV Energy Company, LLC and has since transferred to Langston Oil LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Frio, Tex Miss, Anahuac, Caprock.
Its lease has reported 17.4K barrels of oil and 9.87K mcf of gas since March 2014, last reporting in July 2026.
Operator of record
Permitted by SV Energy Company, LLC; the EWA schedule now lists a different operator.
Bandera, TX · P-5 Y, filed Jan 5, 2026 · (830) 570-3485
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Langston Oil LLC |
| Production reports | Langston Oil, LLCthrough Nov 2021 |
| Latest permit | SV Energy Company, LLCJan 21, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,200
- total depth, ft
- 1
- permits on file
- Jan 21, 2014
- last permit issued
- Mar 11, 2014
- completed
- 17.4K
- cumulative oil, bbl
- 9.87K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 11, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
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 |
|---|---|---|---|---|---|---|
| Heffelfinger-Sartwelle O-3-26972 | Tidehaven (Frio, Upper) | Langston Oil, LLC | 1 | 17.4K | 9.87K | Mar 2014 – Jul 2026 |
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.
- 1SV Energy Company, LLCMar 2014 → Oct 2016
- 2Texegy Operating Company LLCNov 2016 → Aug 2019
- 3Midfield SWD, LLCSep 2019 → Dec 2019
- 4Langston Oil, LLCMay 2020 → Nov 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 776510-99 | Drill | SV Energy Company, LLC | Jan 2, 2014 | Jan 21, 2014 | Feb 3, 2014 | 9,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-26972 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 32 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| FrioFRIO, LOWER | 8,000 | -7,968 |
| Tex Miss | 8,700 | -8,668 |
| Anahuac | — | — |
| CaprockCAPROCK - DISPOSAL | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Grant - Disposal | — | — |
| Gretta - Disposal | — | — |
| Miocene (undifferentiated)MIOCENE - DISPOSAL | — | — |
| Nodosaria | — | — |
| Willis - Disposal | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,422 | 8,430 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,260 | 12.25 | 470 S |
| 4.5 | 8,985 | 7.875 | 550 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | May 4, 2016 | Jan 19, 2016 | Yes |
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 42-321-32367 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-321-32367 → 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/32132367, documented in the API reference.