WELL · 42-115-33980 · DISTRICT 8
Mammoth Cave 21-4 B #6DN
Dawson County · Spraberry (Trend Area) field · Producing · Horizontal
Mammoth Cave 21-4 B #6DN (API 42-115-33980) is a horizontal well in Dawson County operated by Ike Operating LLC, completed September 10, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 11, 2024, permitted to 8,600 ft.
Completion filings report 10 formation tops, including Yates, San Andres, Clear Fork, Spraberry.
Its lease has reported 265K barrels of oil and 124K mcf of gas since September 2024, last reporting in July 2026.
Operator of record
Houston, TX · P-5 Y, filed Jun 4, 2026 · 52 permits on file · (281) 283-5169
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ike Operating LLC |
| Production reports | Ike Operating, LLCthrough Apr 2026 |
| Latest permit | Ike Operating, LLCMar 11, 2024 |
- 8,600
- total depth, ft
- 2
- permits on file
- Mar 11, 2024
- last permit issued
- Sep 10, 2024
- completed
- 265K
- cumulative oil, bbl
- 124K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2024 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 10, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
32.608253, -101.766152
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Dawson County.
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 |
|---|---|---|---|---|---|---|
| Mammoth Cave 21-4 B O-10-63298 | Spraberry (Trend Area) | Ike Operating, LLC | 1 | 265K | 124K | Sep 2024 – Jul 2026 |
Oil, barrels lease total
Last 12 months 109,058 · prior 12 155,789(-30%)
Gas, mcf lease total
Last 12 months 90,835 · prior 12 32,725(+178%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Ike Operating, LLCSep 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 897888-98 | Drill | Ike Operating, LLC | Apr 11, 2024 | Mar 11, 2024 | Mar 11, 2024 | 8,600 |
| 897888-99 | Drill | Ike Operating, LLC | Mar 5, 2024 | Mar 11, 2024 | Mar 11, 2024 | 8,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-63298 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,878 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,202 | 676 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 3,620 | -742 |
| Clear ForkCLEARFORK | 4,804 | -1,926 |
| Spraberry | 6,969 | -4,091 |
| Dean | 8,380 | -5,502 |
| Canyon | — | — |
| Devonian | — | — |
| Mississippian | — | — |
| Pennsylvanian | — | — |
| Wolfcamp | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,832 | 27,092 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 500 | 17.5 | 525 S |
| 9.625 | 7,888 | 12.25 | 995 S |
| 5.5 | 27,149 | 8.5 | 3,240 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 | Jun 23, 2025 | May 20, 2025 | 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 42-115-33980 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-33980 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Mammoth Cave 21-9 A42-115-33979
0.0 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,201 | 677 |
| San Andres | 3,608 | -730 |
| Clear Fork | 4,795 | -1,917 |
| Spraberry | 6,978 | -4,100 |
| Dean | 8,391 | -5,513 |
| Wolfcamp | — | |
| Canyon | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Congaree 21-33 A42-115-34004
0.0 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,212 | 665 |
| San Andres | 3,615 | -738 |
| Clear Fork | 4,801 | -1,924 |
| Spraberry | 6,974 | -4,097 |
| Dean | 8,388 | -5,511 |
| Pennsylvanian | — | |
| Canyon | — | |
| Devonian | — |
11 TOPS · FIRST 8
Congaree 21-33 C42-115-34005
0.0 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,212 | 665 |
| San Andres | 3,618 | -741 |
| Clear Fork | 4,798 | -1,921 |
| Spraberry | 6,970 | -4,093 |
| Dean | 8,372 | -5,495 |
| Pennsylvanian | — | |
| Wolfcamp | — | |
| Canyon | — |
10 TOPS · FIRST 8
Smoky Mountians 21-33 C42-115-34007
0.6 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,211 | 675 |
| San Andres | 3,607 | -721 |
| Clear Fork | 4,833 | -1,947 |
| Spraberry | 7,001 | -4,115 |
| Dean | 8,409 | -5,523 |
| Wolfcamp | — | |
| Canyon | — | |
| Devonian | — |
10 TOPS · FIRST 8
Smoky Mountians 21-33 A42-115-34006
0.6 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,216 | 670 |
| San Andres | 3,610 | -724 |
| Clear Fork | 4,844 | -1,958 |
| Spraberry | 7,016 | -4,130 |
| Dean | 8,421 | -5,535 |
| Pennsylvanian | — | |
| Wolfcamp | — | |
| Canyon | — |
10 TOPS · FIRST 8
Indiana Dunes 21-4 B42-115-33978
0.6 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,207 | 679 |
| San Andres | 3,604 | -718 |
| Clear Fork | 4,839 | -1,953 |
| Spraberry | 6,991 | -4,105 |
| Dean | 8,402 | -5,516 |
| Canyon | — | |
| Wolfcamp | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Indiana Dunes 21-4 A42-115-33977
0.6 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,219 | 667 |
| San Andres | 3,609 | -723 |
| Clear Fork | 4,843 | -1,957 |
| Spraberry | 7,015 | -4,129 |
| Dean | 8,421 | -5,535 |
| Pennsylvanian | — | |
| Wolfcamp | — | |
| Canyon | — |
10 TOPS · FIRST 8
Cuyahoga Valley 22-3 A42-115-34064
1.5 KM · Ike Operating, LLC · Section with this well →
| Yates | 2,183 | 677 |
| San Andres | 3,638 | -778 |
| Clear Fork | 4,784 | -1,924 |
| Spraberry | 6,951 | -4,091 |
| Dean | 8,367 | -5,507 |
| Wolfcamp | — | |
| Canyon | — | |
| Devonian | — |
10 TOPS · FIRST 8
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/11533980, documented in the API reference.