TEXAS · WELLS · LIVE OAK COUNTY · THREE SISTERS 01 LEASE · API 42-297-35783 · DISTRICT 02
Three Sisters 01 #37H
Live Oak County · Sugarkane (Eagle Ford) field · Producing · Horizontal
Three Sisters 01 #37H (API 42-297-35783) is a horizontal well in Live Oak County operated by Marathon Oil EF LLC, completed September 20, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued September 18, 2015, permitted to 12,646 ft.
It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Frio, Hockley - Disposal, Jackson, Cook Mountain.
Its lease has reported 360K barrels of oil and 1.87M mcf of gas since January 2016, last reporting volume in August 2026.
Operator of record
Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Oct 13, 2026
- Permits on file
- 3,191
- Phone
- (832) 486-2737
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 | Pioneer Natural Res. USA, Inc.Sep 18, 2015 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,646
- total depth, ft
- 2
- permits on file
- Sep 18, 2015
- last permit issued
- Sep 20, 2017
- completed
- 360K
- cumulative oil, bbl
- 1.87M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · SEP 2017 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 20, 2017
- Shut in
- —
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 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 |
|---|---|---|---|---|---|---|
| Three Sisters 01 G-2-281098 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 1 | 360K | 1.87M | Jan 2016 – Aug 2026 |
Gas, mcf lease total
Last 12 months 63,294 · prior 12 38,030(+66%)
Wells named Three Sisters 01
Marathon Oil EF LLC's other wells filed under this lease name in Live Oak County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Sep 2017 → Sep 2019
- 2Ensign Operating LLCOct 2019 → Feb 2023
- 3Marathon Oil EF LLCMar 2023 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 810416-98 | Drill | Pioneer Natural Res. USA, Inc. | Nov 12, 2015 | Sep 18, 2015 | Dec 14, 2015 | 25,000 |
| 810416-99 | Drill | Pioneer Natural Res. USA, Inc. | Sep 17, 2015 | Sep 18, 2015 | Dec 14, 2015 | 21,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 20, 2017 | Three Sisters 01 G-2-281098 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | Producing | 12,646 |
Formation tops
As filed on W-2/G-1. Subsea from 218 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| FrioFRIO - DISPOSAL | 235 | -17 |
| Hockley - Disposal | 740 | -522 |
| JacksonJACKSON-YEGUA - DISPOSAL | 1,459 | -1,241 |
| Cook Mountain | 2,477 | -2,259 |
| Queen City | 3,764 | -3,546 |
| Wilcox | 5,081 | -4,863 |
| Austin Chalk | 12,258 | -12,040 |
| Eagle FordEAGLE FORD - H2S | 12,470 | -12,252 |
| EdwardsEDWARDS - H2S | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,980 | 22,402 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 6,474 | 14.75 | 3,520 S |
| 9.625 | 6,474 | 12.25 | 3,520 S |
| 5.5 | 22,635 | 8.75 | 3,660 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 | Jan 12, 2024 | Dec 1, 2023 | — |
| 00 | Apr 19, 2018 | Oct 11, 2017 | Yes |
| 00 | Oct 27, 2016 | Oct 17, 2016 | Yes |
Well logs
4 logs loaded from the RRC's log index, the latest received Mar 16, 2020. Gamma ray, 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 |
|---|---|---|---|---|
| Gamma RaySpans Wilcox, Austin Chalk, Eagle Ford | TIFF | 6,472 to 22,820 | Mar 12, 2018 | 26.0 |
| Gamma RaySpans Wilcox, Austin Chalk, Eagle Ford | TIFF | 6,472 to 22,620 | Oct 11, 2017 | 5.03 |
| RESISTIVITYSpans Wilcox, Austin Chalk, Eagle Ford | TIFF | 6,472 to 22,620 | Mar 16, 2020run Jan 2, 2016 | 12.8 |
| RESISTIVITYSpans Wilcox, Austin Chalk, Eagle Ford | TIFF | 6,472 to 22,620 | Mar 29, 2017run Jan 2, 2016 | 1.15 |
"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 42-297-35783 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-297-35783 → 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/29735783, documented in the API reference.