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 Surface Location
 API# 05-123-08017		Well Classification: GW Status: SI - 12/1/2025
Well Name/No:NEFF #1
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:KP KAUFFMAN COMPANY INC - 46290
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:SIStatus Date12/1/2025
FacilityID:240229LocationID:336482
County:WELD #123Location:SESE 19 2N66W 6
Field:SINGLETREE (SPINDLE) - #77510Elevation:4874 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:660FSL  660 FELLat/Long: 40.118237 / -104.813051Lat/Long Source: Calculated From Footages
As Drilled Location:Footages Not AvailableLat/Long: 40.118180 / -104.813040Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: GW             Status: SI - 12/1/2025             Measured TD: 4725 ft.    Vertical TD: 0 ft.

 Wellbore Data for Original WellboreWellbore Classification: GW        SI - 12/1/2025
Wellbore Permit
Permit #:19740175 Expiration Date:3/20/1975
Proposed Depth/Form:4750 ft.
Surface Mineral Owner Same:Not available
Mineral Owner:FEESurface Owner:Not available
Unit: Unit Number: 
Formation And Spacing:Code: SUSX , Formation: SUSSEX , Order: 0 , Unit Acreage: 80, Drill Unit: N2SE
Wellbore Completed
Completion Date:4/24/1974
Spud Date:4/24/1974Spud Date Is:ACTUAL
Measured TD:4725 ft.Measured PB depth:4677 ft.
True Vertical TD:0 ft.True Vertical PB depth:
Log Types:IES AND GR-FDC
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 597 ft., Weight: 20 , Citings Type: ACTUAL
Cement:Sacks: 475, Top: 0 ft., Bottom: 597 ft., Determination Method: VISU
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: 0 ft., Depth: 4721 ft., Weight: 10.5 , Citings Type: ACTUAL
Cement:Sacks: 300, Top: 3206 ft., Bottom: 4721 ft., Determination Method: CALC
FormationInterval TopLog BottomCoredDSTs
SUSSEX4484 ft.

Formation SUSX                     Formation Classification:  GW                     Status:  SI - 12/1/2025                 Interval Top: 4574 ft.    Interval Bottom: 4606 ft.

 Completed Information for Formation SUSSEX
1st Production Date:5/6/1974Choke Size:0.312 in.
Formation Name:SUSSEXCommingled:
Production Method:PUMPING
Open Hole Completion:
Formation Treatment
Treatment Date:4/24/1974
Treatment Summary:63,300 K-1 FLUID 19,000# SAND
Tubing Size:2.375 in.Tubing Setting Depth:4565 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:5/6/1974Test Method:PUMPING
Hours Tested:24Gas Type:
Gas Disposal:
Test TypeMeasure
BBLS_H2O 2
BBLS_OIL 151
CALC_BBLS_H2O 2
CALC_BBLS_OIL 151
CALC_GOR 675
CALC_MCF_GAS 102
CASING_PRESS 150
GRAVITY_OIL 40
MCF_GAS 102
TUBING_PRESS 600
Perforation Data:
Interval Top:4574 ft.# Of Holes:37
Interval Bottom:4606 ft.Hole Size:0.14 in.
Primary Well Designation:
Low Producing      i
            All DesignationsDate
Reported PluggedN 
Out Of Service RepurposedN 
Out Of ServiceN 
Inactive ExceptionN 
Noticed InactiveN 
Defined InactiveN 
Low ProducingYProduction Period
12/2024 - 11/2025

BOE/MCFE/GOR Calculations
Production for Previous 12 Months
December 2024 - November 2025i
Total Oil Produced (Barrels)0
Total Gas Produced (MCF)52
GOR
GOR DeterminationMCFE
Average BOE per Day0.027
Average MCFE per Day0.140

 Federal Financial Assurance  i 

 Tribal Well  i No