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Texas well record

HIERHOLZER QUAD SA B #1

MARATHON OIL EF LLC

PermittedKarnes Longitude: -98.03944 Mag Reference: Grid North County
API104225538368
API825538368
Latest eventDirectional Survey Available
Event dateMay 11, 2026
Well context

Known public record details

API number4225538368
CountyKarnes Longitude: -98.03944 Mag Reference: Grid North County
OperatorMARATHON OIL EF LLC
Field-
LeaseHIERHOLZER QUAD SA B (000000)
Well number1
StatusPermitted
Location

Location summary

Public records currently place this well in Karnes Longitude: -98.03944 Mag Reference: Grid North County, survey GRIFFITH, N, abstract 123, section 600. Surface locations can be incomplete or misleading for horizontal wells, so verify official plats, directional surveys, completion records, and source documents before relying on a map point.

SurveyGRIFFITH, N
Abstract123
Block-
Section600
Directional survey

Directional survey / wellbore path available

Parsed public directional survey records include a map-ready wellbore path for this well. Wellbore paths are derived records and are not official parcel or boundary lines.

Geometry confidenceComputed local offsets
Station count222
Measured depth end21,080 ft
TVD end11,548 ft
Open source surveyOpen map centered on lateral

Part of this path is projected from parsed survey records.

Lifecycle

Well lifecycle timeline

W-1 permitLinked signal foundMay 11, 2026

Permit records can indicate requested drilling, recompletion, deepening, or related work, but do not guarantee drilling or production.

W-2/G-1 completionNo linked signal yetDate unknown

Completion filings can show that a well moved from permitted or drilled status into a completed well record.

Form PR productionNo linked signal yetDate unknown

Production signals help identify wells with linked monthly production or derived producing status.

P-4 operator/lease changesNo linked signal yetDate unknown

P-4 activity can indicate operator, lease, gatherer, purchaser, or responsibility changes tied to the record.

W-3A/W-3 pluggingNo linked signal yetDate unknown

Plugging notices and plugging records help distinguish planned plugging from wells already reported as plugged.

Directional survey, plat, or L-1Linked signal foundMay 11, 2026

Directional surveys, plats, and L-1 records can be important for understanding horizontal wells beyond the surface point.

Activity

Recent activity timeline

Jun 3, 2026Directional survey available

Directional survey

Directional Survey AvailableKarnes Longitude: -98.03944 Mag Reference: Grid North CountyMARATHON OIL EF LLCAPI 4225538368
W-12 explainerView source documents
Documents

Recent source documents

Directional surveyForm type unknownJun 3, 2026
8 linked wells

Related wells from the same lease, operator, field, or county

25538405

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - SUGARKANE (EAGLE FORD)

Survey D - Abstract 28 - Block BARNES, J - Section 295

PermittedHorizontal Permit FiledJun 9, 2026
View record
25538407

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - SUGARKANE (EAGLE FORD)

Survey D - Abstract 28 - Block BARNES, J - Section 295

PermittedHorizontal Permit FiledJun 9, 2026
View record
25538384

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - EAGLEVILLE (EAGLE FORD-2)

Survey SEGUIN, D E - Abstract 10 - Block 27135750 EAGLEVILLE - Section 02

PermittedHorizontal Permit FiledApr 21, 2026
View record
25538406

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - SUGARKANE (EAGLE FORD)

Survey D - Abstract 28 - Block BARNES, J - Section 295

PermittedDocument FiledJun 9, 2026
View record
25538408

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - SUGARKANE (EAGLE FORD)

Survey D - Abstract 28 - Block BARNES, J - Section 295

PermittedDocument FiledJun 9, 2026
View record
25538409

Karnes County - MARATHON OIL EF LLC PO BOX 2197 - SUGARKANE (EAGLE FORD)

Survey D - Abstract 28 - Block BARNES, J - Section 295

PermittedDocument FiledJun 9, 2026
View record
GUERRA-KUNDE USW D #1

Live Oak County - BURLINGTON RESOURCES O & G CO LP

Survey CAIRNS, W - Abstract 155 - Section 173

PermittedDirectional Survey AvailableJun 3, 2026
View record
JIMMERSON UNIT #8H

Karnes County - DEVON ENERGY PRODUCTION CO, L.P. - EAGLEVILLE (EAGLE FORD-2)

Survey FLORES, D G - Abstract 1

Recently completedDocument FiledJun 2, 2026
View record
Related entities
MARATHON OIL EF LLCKarnes Longitude: -98.03944 Mag Reference: Grid North County
Source form explainers
W-1 drilling permitW-12 directional survey
Map point
HIERHOLZER QUAD SA B #1API 4225538368
100 ft

28.828223, -98.039828

Open in FutureWells map
Source note

Well pages combine public records, linked source documents, derived status signals, and normalized activity. Verify API, operator, status, production, location, and lifecycle facts against official records before relying on them.

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