WELL · 42-237-39451 · DISTRICT 9
Henderson #1C
Jack County · Jack County Regular field · Injection · Vertical
Henderson #1C (API 42-237-39451) is a well in Jack County operated by Mammoth Operating LLC, completed October 23, 2013 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued August 29, 2011, permitted to 450 ft.
It was permitted by Comstock Energy, LLC and has since transferred to Mammoth Operating LLC on the wellbore schedule.
Completion filings report one formation top, including Gunsight.
Its lease has reported 12.4K barrels of oil and 225 mcf of gas since January 1993, last reporting in July 2026. The lease carries 29 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 268 barrels injected in the 12 months reported through October 2025.
Operator of record
Permitted by Comstock Energy, LLC; the EWA schedule now lists a different operator.
- Based in
- Spicewood, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 1, 2025
- Permits on file
- 2
- Phone
- (214) 624-4819
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mammoth Operating LLC |
| Production reports | Mammoth Operating LLCthrough Apr 2026 |
| Latest permit | Comstock Energy, LLCAug 29, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 450
- total depth, ft
- 1
- permits on file
- Aug 29, 2011
- last permit issued
- Oct 23, 2013
- completed
- 12.4K
- cumulative oil, bbl
- 225
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 23, 2013
- 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.
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; they carry 29 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Henderson O-13-3359 | Jack County Regular | Mammoth Operating LLC | 29 | 12.4K | 225 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 295 · prior 12 252(+17%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1H & L Oil PropertiesJan 1993 → Oct 1993
- 2MT Oil PropertiesNov 1993 → Mar 2011
- 3Comstock Energy, LLCSep 2011 → Nov 2016
- 4Lode Holdings, LLCDec 2016 → Feb 2018
- 5Wineglass Production, LLCMar 2018 → Aug 2024
- 6Mammoth Operating LLCOct 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 722588-99 | Drill | Comstock Energy, LLC | Aug 17, 2011 | Aug 29, 2011 | Sep 4, 2011 | 450 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-3359 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 979 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 409 | 414 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 439 | 7.875 | 150 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 | Jul 17, 2015 | Jun 1, 2015 | — |
| 00 | Apr 10, 2013 | Apr 25, 2012 | 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 42-237-39451 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-237-39451 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 268
- bbl, last 12 reported months
- 21.1K
- bbl, all reported
- Oct 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000105292 | H-1 Injection | Active | 50 | 185 | 370–430 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 268 · prior 12 162(+65%)
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/23739451, documented in the API reference.