WELL · 42-297-35782 · DISTRICT 2

Three Sisters 01 #36H

N

Live Oak County · Sugarkane (Eagle Ford) field  · Horizontal

Three Sisters 01 #36H (API 42-297-35782) is a horizontal well in Live Oak County operated by Pioneer Natural Res. USA Inc., completed February 17, 2016.

The RRC has issued one drilling permit (amended twice), issued September 18, 2015, permitted to 25,000 ft.

Completion filings report 10 formation tops, including Frio, Hockley - Disposal, Jackson, Cook Mountain.

Its 2 leases have reported 2.4M barrels of oil and 9.91M mcf of gas since February 2016, last reporting in July 2026. The leases carry 13 wells, so these are lease totals, not this well alone.

Operator of record

Pioneer Natural Res. USA Inc.

Spring, TX · P-5 Y, filed May 4, 2026 · 15,618 permits on file · (972) 598-8150

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedulePioneer Natural Res. USA Inc.
Production reportsMarathon Oil EF LLCthrough Apr 2026
Latest permitPioneer 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.

25,000
total depth, ft
3
permits on file
Sep 18, 2015
last permit issued
Feb 17, 2016
completed
2.4M
cumulative oil, bbl
9.91M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Feb 2016 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Feb 17, 2016
Shut in
—
Plugged
—

Surface location

28.552541, -98.244465

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 →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Three Sisters 01 O-2-11430Sugarkane (Eagle Ford)Marathon Oil EF LLC122.4M9.82MSep 2017 – Jul 2026
Three Sisters 01 G-2-281175Sugarkane (Eagle Ford)Pioneer Natural Res. USA, Inc.1091.8KFeb 2016 – Oct 2017

Oil, barrels lease total

Last 12 months 63,340 · prior 12 104,249(-39%)

020K40K202420252026

Gas, mcf lease total

Last 12 months 390,416 · prior 12 550,109(-29%)

050K100K150K202420252026

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Pioneer Natural Res. USA, Inc.Sep 2017 → Sep 2019
  2. 2Ensign Operating LLCOct 2019 → Feb 2023
  3. 3Marathon Oil EF LLCMar 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
810415-97DrillPioneer Natural Res. USA, Inc.Nov 14, 2017Sep 18, 2015Dec 12, 201525,000
810415-98DrillPioneer Natural Res. USA, Inc.Nov 17, 2015Sep 18, 2015Dec 12, 201525,000
810415-99DrillPioneer Natural Res. USA, Inc.Sep 17, 2015Sep 18, 2015—21,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— G-2-281175————
—— O-2-11430————

Formation tops

As filed on W-2/G-1. Subsea from 208 ft elevation.Download CSV →

FormationMD ftSubsea
FrioFRIO - DISPOSAL250-42
Hockley - Disposal740-532
JacksonJACKSON-YEGUA - DISPOSAL1,459-1,251
Cook Mountain2,535-2,327
Queen City3,792-3,584
Wilcox5,162-4,954
Austin Chalk12,226-12,018
Eagle FordEAGLE FORD - H2S12,453-12,245
EdwardsEDWARDS - H2S——
SligoSLIGO - H2S——

Perforations

Perforated and open-hole intervals.

FromToType
12,74522,037Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
12.256,4689.6252,026 S
9.6256,46812.252,026 S
8.522,2805.53,768 S
5.522,2808.53,768 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00May 10, 2018Nov 30, 2017Yes
00Oct 28, 2016Oct 17, 2016Yes

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.

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.

Open the cross-section →

Three Sisters 0142-297-36276

0.7 KM · Ensign Operating LLC · Section with this well →

Queen City4,839-4,640
Wilcox5,239-5,040
Austin Chalk12,579-12,380
Eagle Ford12,622-12,423
Cook Mountain—
Sligo—
Jackson—
Hockley - Disposal—

10 TOPS · FIRST 8

Three Sisters 0142-297-36277

0.7 KM · Ensign Operating LLC · Section with this well →

Queen City4,839-4,640
Wilcox5,239-5,040
Austin Chalk12,663-12,464
Eagle Ford12,697-12,498
Hockley - Disposal—
Cook Mountain—
Jackson—
Sligo—

10 TOPS · FIRST 8

Three Sisters 0142-297-36278

0.7 KM · Ensign Operating LLC · Section with this well →

Queen City4,839-4,640
Wilcox5,239-5,040
Austin Chalk12,672-12,473
Eagle Ford12,704-12,505
Cook Mountain—
Sligo—
Jackson—
Hockley - Disposal—

10 TOPS · FIRST 8

Three Sisters 0142-297-36279

0.7 KM · Ensign Operating LLC · Section with this well →

Queen City4,839-4,639
Wilcox5,239-5,039
Austin Chalk12,675-12,475
Eagle Ford12,716-12,516
Edwards—
Cook Mountain—
Sligo—
Jackson—

10 TOPS · FIRST 8

Three Sisters 0142-297-36082

0.9 KM · Ensign Operating LLC · Section with this well →

Wilcox4,871-4,680
Austin Chalk12,369-12,178
Eagle Ford12,403-12,212
Frio—
Jackson—
Queen City—
Sligo—
Hockley - Disposal—

10 TOPS · FIRST 8

Three Sisters 0142-297-36081

0.9 KM · Ensign Operating LLC · Section with this well →

Wilcox4,871-4,679
Austin Chalk12,367-12,175
Eagle Ford12,400-12,208
Frio—
Hockley - Disposal—
Jackson—
Sligo—
Cook Mountain—

10 TOPS · FIRST 8

Three Sisters 0142-297-36080

0.9 KM · Ensign Operating LLC · Section with this well →

Wilcox4,871-4,679
Austin Chalk12,364-12,172
Eagle Ford12,396-12,204
Frio—
Hockley - Disposal—
Jackson—
Queen City—
Sligo—

10 TOPS · FIRST 8

Three Sisters 0142-297-35934

0.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Hockley - Disposal559-314
Jackson1,260-1,015
Cook Mountain2,619-2,374
Queen City3,559-3,314
Wilcox5,108-4,863
Austin Chalk12,428-12,183
Eagle Ford12,550-12,305
Edwards—

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/29735782, documented in the API reference.