WELL · 42-297-36080 · DISTRICT 2
Three Sisters 01 #52H
Live Oak County · Sugarkane (Eagle Ford) field · Horizontal
Three Sisters 01 #52H (API 42-297-36080) is a horizontal well in Live Oak County operated by Marathon Oil EF LLC, completed January 26, 2022.
The RRC has issued one drilling permit, issued April 15, 2020, 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 Wilcox, Austin Chalk, Eagle Ford, Cook Mountain.
Its 2 leases have reported 2.4M barrels of oil and 11M mcf of gas since September 2017, last reporting in July 2026. The leases carry 13 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 LLCApr 15, 2020 |
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
- Apr 15, 2020
- last permit issued
- Jan 26, 2022
- completed
- 2.4M
- cumulative oil, bbl
- 11M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 26, 2022
- Shut in
- —
- Plugged
- —
Surface location
28.559572, -98.240216
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 2 leases this well is completed on; they carry 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Three Sisters 01 G-2-296217 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 1 | 0 | 1.21M | Jan 2022 – Jul 2026 |
| 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 484,594 · prior 12 691,168(-30%)
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 LLCJan 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 863264-99 | Drill | Ensign Operating LLC | Apr 7, 2020 | Apr 15, 2020 | Sep 30, 2021 | 25,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-296217 | — | — | — | — |
| — | — O-2-11430 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 192 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wilcox | 4,871 | -4,679 |
| Austin Chalk | 12,364 | -12,172 |
| Eagle FordEAGLE FORD - H2S | 12,396 | -12,204 |
| Cook Mountain | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Hockley - Disposal | — | — |
| JacksonJACKSON-YEGUA - DISPOSAL | — | — |
| Queen City | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,688 | 17,937 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,414 | 12.25 | 2,916 S |
| 5.5 | 18,004 | 8.75 | 4,010 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 | Jan 29, 2024 | Dec 13, 2023 | Yes |
| 00 | May 20, 2022 | Apr 22, 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 42-297-36080 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-297-36080 → 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 0142-297-36078
0.0 KM · Ensign Operating LLC · Section with this well →
| Wilcox | 4,871 | -4,678 |
| Austin Chalk | 12,351 | -12,158 |
| Eagle Ford | 12,382 | -12,189 |
| Edwards | — | |
| Frio | — | |
| Hockley - Disposal | — | |
| Jackson | — | |
| Queen City | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-36081
0.0 KM · Ensign Operating LLC · Section with this well →
| Wilcox | 4,871 | -4,679 |
| Austin Chalk | 12,367 | -12,175 |
| Eagle Ford | 12,400 | -12,208 |
| Edwards | — | |
| Sligo | — | |
| Queen City | — | |
| Jackson | — | |
| Hockley - Disposal | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-36082
0.0 KM · Ensign Operating LLC · Section with this well →
| Wilcox | 4,871 | -4,680 |
| Austin Chalk | 12,369 | -12,178 |
| Eagle Ford | 12,403 | -12,212 |
| Hockley - Disposal | — | |
| Cook Mountain | — | |
| Edwards | — | |
| Frio | — | |
| Jackson | — |
10 TOPS · FIRST 8
Three Sisters 01 - WK01 C42-297-36233
0.6 KM · Ensign Operating LLC · Section with this well →
| Queen City | 3,647 | -3,475 |
| Wilcox | 5,125 | -4,953 |
| Austin Chalk | 12,460 | -12,288 |
| Eagle Ford | 12,522 | -12,350 |
| Frio | — | |
| Hockley - Disposal | — | |
| Jackson | — | |
| Sligo | — |
10 TOPS · FIRST 8
Three Sisters 01 - WK01 B42-297-36232
0.6 KM · Ensign Operating LLC · Section with this well →
| Queen City | 3,647 | -3,475 |
| Wilcox | 5,089 | -4,917 |
| Austin Chalk | 12,426 | -12,254 |
| Eagle Ford | 12,519 | -12,347 |
| Jackson | — | |
| Hockley - Disposal | — | |
| Frio | — | |
| Edwards | — |
10 TOPS · FIRST 8
Three Sisters 01 - WK01 A42-297-36231
0.6 KM · Ensign Operating LLC · Section with this well →
| Queen City | 3,743 | -3,572 |
| Wilcox | 4,961 | -4,790 |
| Austin Chalk | 12,421 | -12,250 |
| Eagle Ford | 12,473 | -12,302 |
| Jackson | — | |
| Hockley - Disposal | — | |
| Frio | — | |
| Sligo | — |
10 TOPS · FIRST 8
Three Sisters 0142-297-35782
0.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Frio | 250 | -42 |
| Hockley - Disposal | 740 | -532 |
| Jackson | 1,459 | -1,251 |
| Cook Mountain | 2,535 | -2,327 |
| Queen City | 3,792 | -3,584 |
| Wilcox | 5,162 | -4,954 |
| Austin Chalk | 12,226 | -12,018 |
| Eagle Ford | 12,453 | -12,245 |
10 TOPS · FIRST 8
Three Sisters 0142-297-36276
1.1 KM · Ensign Operating LLC · Section with this well →
| Queen City | 4,839 | -4,640 |
| Wilcox | 5,239 | -5,040 |
| Austin Chalk | 12,579 | -12,380 |
| Eagle Ford | 12,622 | -12,423 |
| Frio | — | |
| Hockley - Disposal | — | |
| Jackson | — | |
| Cook Mountain | — |
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/29736080, documented in the API reference.