TEXAS · WELLS · MCMULLEN COUNTY · NBRP EF LEASE · API 42-311-35440 · DISTRICT 01
Nbrp EF #8H
McMullen County · Eagleville (Eagle Ford-1) field · Temp Abandoned · Horizontal
Nbrp EF #8H (API 42-311-35440) is a horizontal well in Mcmullen County operated by Crescent Energy Operating LLC, completed March 28, 2014 and listed as temp abandoned on the RRC schedule, shut in August 1, 2021.
The RRC has issued one drilling permit, issued May 14, 2013, permitted to 12,023 ft.
It was permitted by Swift Energy Operating, LLC and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Anacacho, Austin Chalk, Eagle Ford.
Its lease has reported 110K barrels of oil and 1.17M mcf of gas since July 2013, last reporting volume in October 2025.
Operator of record
Permitted by Swift Energy Operating, LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 28, 2025
- Permits on file
- 54
- Phone
- (713) 337-4600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Crescent Energy Operating LLC |
| Production reports | Crescent Energy Operating, LLCthrough Oct 2025 |
| Latest permit | Swift Energy Operating, LLCMay 14, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,023
- total depth, ft
- 1
- permits on file
- May 14, 2013
- last permit issued
- Mar 28, 2014
- completed
- 110K
- cumulative oil, bbl
- 1.17M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2013 THROUGH Oct 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 28, 2014
- Shut in
- Aug 1, 2021
- 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 |
|---|---|---|---|---|---|---|
| Nbrp EF G-1-271902 | Eagleville (Eagle Ford-1) | Crescent Energy Operating, LLC | 1 | 110K | 1.17M | Jul 2013 – Oct 2025 |
Gas, mcf lease total
Last 12 months 68 · prior 12 5
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Swift Energy Operating, LLCOct 2013 → Jun 2017
- 2Silverbow Resources Oper, LLCJul 2017 → Oct 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 762450-99 | Drill | Swift Energy Operating, LLC | May 10, 2013 | May 14, 2013 | Sep 14, 2013 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 28, 2014 | Nbrp EF G-1-271902 | Eagleville (Eagle Ford-1) | Crescent Energy Operating LLC | Temp Abandoned · shut in Aug 1, 2021 | 12,023 |
Formation tops
As filed on W-2/G-1. Subsea from 272 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anacacho | 11,562 | -11,290 |
| Austin Chalk | 11,946 | -11,674 |
| Eagle Ford | 12,056 | -11,784 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,565 | 18,500 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 393 | 20 | 515 S |
| 9.625 | 7,110 | 12.25 | 1,380 S |
| 5.5 | 18,580 | 8.75 | 2,565 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 | Oct 29, 2014 | Jul 15, 2014 | Yes |
| 00 | May 5, 2014 | Nov 26, 2013 | Yes |
| 00 | May 2, 2014 | Sep 16, 2013 | Yes |
Well logs
2 logs loaded from the RRC's log index, the latest received Oct 28, 2016. 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 |
|---|---|---|---|---|
| RESISTIVITYSpans Anacacho, Austin Chalk, Eagle Ford | TIFF | 3,700 to 18,580 | Oct 28, 2016run Jul 14, 2013 | 3.44 |
| RESISTIVITYSpans Austin Chalk, Eagle Ford | TIFF | 12,000 to 18,580 | Sep 7, 2016run Jul 14, 2013 | 1.86 |
"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 42-311-35440 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-35440 → 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/31135440, documented in the API reference.