WELL · 42-297-36218 · DISTRICT 2
Three Sisters 01 #61H
Live Oak County · Sugarkane (Eagle Ford) field · Producing · Horizontal
Three Sisters 01 #61H (API 42-297-36218) is a horizontal well in Live Oak County operated by Marathon Oil EF LLC, completed September 15, 2022 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 18, 2022, permitted to 25,000 ft.
It was permitted by Ensign Operating LLC and has since transferred to Marathon Oil EF LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Jackson, Queen City, Wilcox, Austin Chalk.
Its lease has reported 2.4M barrels of oil and 9.82M mcf of gas since September 2017, last reporting in July 2026. The lease carries 12 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Ensign Operating LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Ensign Operating LLCFeb 18, 2022 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 25,000
- total depth, ft
- 1
- permits on file
- Feb 18, 2022
- last permit issued
- Sep 15, 2022
- completed
- 2.4M
- cumulative oil, bbl
- 9.82M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 15, 2022
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.581312, -98.248334
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Live Oak 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; they carry 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Three Sisters 01 O-2-11430 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 12 | 2.4M | 9.82M | Sep 2017 – Jul 2026 |
Oil, barrels lease total
Last 12 months 63,340 · prior 12 104,249(-39%)
Gas, mcf lease total
Last 12 months 390,416 · prior 12 550,109(-29%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Oct 2017 → Sep 2019
- 2Ensign Operating LLCOct 2019 → Feb 2023
- 3Marathon Oil EF LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 877057-99 | Drill | Ensign Operating LLC | Feb 14, 2022 | Feb 18, 2022 | Jun 20, 2022 | 25,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-11430 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 198 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| JacksonJACKSON-YEGUA - DISPOSAL | 1,463 | -1,265 |
| Queen City | 3,753 | -3,555 |
| Wilcox | 5,072 | -4,874 |
| Austin Chalk | 12,091 | -11,893 |
| Eagle FordEAGLE FORD - H2S | 12,135 | -11,937 |
| Cook Mountain | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Hockley - Disposal | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,428 | 17,708 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,462 | 12.25 | 2,293 S |
| 5.5 | 17,775 | 8.75 | 4,025 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 | Mar 31, 2023 | Dec 5, 2022 | 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 42-297-36218 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-297-36218 → 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.
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.
Three Sisters 0142-297-36217
0.0 KM · Ensign Operating LLC · Section with this well →
| Jackson | 1,467 | -1,269 |
| Queen City | 3,763 | -3,565 |
| Wilcox | 5,067 | -4,869 |
| Austin Chalk | 12,078 | -11,880 |
| Eagle Ford | 12,121 | -11,923 |
| Cook Mountain | — | |
| Sligo | — | |
| Hockley - Disposal | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-36219
0.0 KM · Ensign Operating LLC · Section with this well →
| Jackson | 1,483 | -1,285 |
| Queen City | 3,773 | -3,575 |
| Wilcox | 5,035 | -4,837 |
| Austin Chalk | 12,092 | -11,894 |
| Eagle Ford | 12,134 | -11,936 |
| Sligo | — | |
| Hockley - Disposal | — | |
| Frio | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-36216
0.0 KM · Ensign Operating LLC · Section with this well →
| Jackson | 1,436 | -1,238 |
| Queen City | 3,722 | -3,524 |
| Wilcox | 4,990 | -4,792 |
| Austin Chalk | 12,058 | -11,860 |
| Eagle Ford | 12,107 | -11,909 |
| Sligo | — | |
| Frio | — | |
| Hockley - Disposal | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-36215
0.0 KM · Ensign Operating LLC · Section with this well →
| Jackson | 1,464 | -1,266 |
| Queen City | 3,755 | -3,557 |
| Wilcox | 5,006 | -4,808 |
| Austin Chalk | 12,067 | -11,869 |
| Eagle Ford | 12,115 | -11,917 |
| Hockley - Disposal | — | |
| Edwards | — | |
| Sligo | — |
10 TOPS · FIRST 8
Whizz-Bang A42-297-36207
1.3 KM · Verdun Oil & Gas LLC · Section with this well →
| Hockley - Disposal | 560 | -344 |
| Jackson | 1,469 | -1,253 |
| Cook Mountain | 2,367 | -2,151 |
| Queen City | 3,426 | -3,210 |
| Wilcox | 5,587 | -5,371 |
| Austin Chalk | 11,932 | -11,716 |
| Eagle Ford | 12,005 | -11,789 |
| Frio | — |
10 TOPS · FIRST 8
Whizz-Bang B42-297-36208
1.3 KM · Verdun Oil & Gas LLC · Section with this well →
| Hockley - Disposal | 560 | -344 |
| Jackson | 1,469 | -1,253 |
| Cook Mountain | 2,367 | -2,151 |
| Queen City | 3,246 | -3,030 |
| Wilcox | 5,587 | -5,371 |
| Austin Chalk | 11,953 | -11,737 |
| Eagle Ford | 12,018 | -11,802 |
| Edwards | — |
10 TOPS · FIRST 8
Whizz-Bang C42-297-36209
1.3 KM · Verdun Oil & Gas LLC · Section with this well →
| Hockley - Disposal | 560 | -344 |
| Jackson | 1,469 | -1,253 |
| Cook Mountain | 2,367 | -2,151 |
| Queen City | 3,426 | -3,210 |
| Wilcox | 5,587 | -5,371 |
| Austin Chalk | 11,963 | -11,747 |
| Eagle Ford | 12,031 | -11,815 |
| Sligo | — |
10 TOPS · FIRST 8
Chasseur C42-297-36545
1.4 KM · Verdun Oil & Gas LLC · Section with this well →
| Queen City | 11,366 | -11,148 |
| Wilcox | 11,366 | -11,148 |
| Austin Chalk | 11,506 | -11,288 |
| Eagle Ford | 11,579 | -11,361 |
| Frio | — | |
| Hockley - Disposal | — | |
| Edwards | — | |
| Sligo | — |
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/29736218, documented in the API reference.