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COGIS - WELL SCOUT CARD
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 Surface Location
 API# 05-001-09555		Well Classification: GW Status: PR - 3/1/2023
Well Name/No:ZARLENGO #23-4
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:HELENA RESOURCES INC - 10547
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:PRStatus Date3/1/2023
FacilityID:282371LocationID:335739
County:ADAMS #001Location:NESW 4 1S67W 6
Field:WATTENBERG - #90750Elevation:5187 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:1978FSL  1990 FWLLat/Long: 39.991866 / -104.896218Lat/Long Source: Calculated From Footages
As Drilled Location:Footages Not AvailableLat/Long: 39.991944 / -104.896111Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: GW             Status: PR - 3/1/2023             Measured TD: 8542 ft.

 Wellbore Data for Original WellboreWellbore Classification: GW        PR - 3/1/2023
Wellbore PermitDRIFTED
Permit #:20054199 Expiration Date:1/3/2007
Proposed Depth/Form:8550 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number: 
Formation And Spacing:Code: JNBCD , Formation: J-NIOBRARA-CODELL , Order: 407-66 , Unit Acreage: 320, Drill Unit: W2
Wellbore Completed
Completion Date:2/22/2006
Spud Date:2/15/2006Spud Date Is:ACTUAL
Measured TD:8542 ft.Measured PB depth:8494 ft.
True Vertical TD:True Vertical PB depth:
Log Types:GR/CBL/DIL,CD/CN
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 1137 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: 800, Top: 0 ft., Bottom: 1137 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: 0 ft., Depth: 8524 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: 265, Top: 7130 ft., Bottom: 8524 ft., Determination Method: CBL
Casing:String Type: S.C. 1.1, Hole Size: , Size: , Top: , Depth: 5226 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: 155, Top: 4690 ft., Bottom: 5226 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
SUSSEX4980 ft.NN
NIOBRARA7510 ft.NN
FORT HAYS7928 ft.NN
CODELL7950 ft.NN
J SAND8383 ft.NN

Formation CODL                     Formation Classification:  GW                     Status:  CM - 4/12/2011                 Interval Top: 7950 ft.    Interval Bottom: 7970 ft.

 Completed Information for Formation CODELL
1st Production Date:N/AChoke Size: 
Formation Name:CODELLCommingled:Yes
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:3/9/2006
Treatment Summary:FRAC W/155,400 GALS FRAC FLUID + 218,180# SAND & 12,000# 12/20 SAND.
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
No Initial Test Data was found for formation CODL.
Perforation Data:
Interval Top:7950 ft.# Of Holes:120
Interval Bottom:7970 ft.Hole Size:

Formation NB-CD                   Formation Classification:  GW                   Status:  PR - 3/1/2023                  Interval Top: 7512 ft.    Interval Bottom: 7970 ft.

 Completed Information for Formation NIOBRARA-CODELL
1st Production Date:3/21/2006Choke Size:0.219 in.
Formation Name:NIOBRARA-CODELLCommingled:Yes
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:2/22/2006
Treatment Summary:FRAC CODL (7950-7970') W/ 155,400 GALS FRAC FLUID + 218,180 30/50 SAND& 12,000# 12/20SND. FRAC NBRR (7512-7810') W/177,903 GAL FRAC FLUID+ 238,040# 30/50 SND &12,000# 12/20 SND.
Tubing Size:2.375 in.Tubing Setting Depth:8345 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:4/17/2006Test Method:FLOWING
Hours Tested:24Gas Type:SHALE
Gas Disposal:SOLD
Test TypeMeasure
BBLS_H2O 27
BBLS_OIL 56
BTU_GAS 1390
CALC_GOR 2125
CASING_PRESS 1300
GRAVITY_OIL 44
MCF_GAS 116
TUBING_PRESS 725
Perforation Data:
Interval Top:7512 ft.# Of Holes:360
Interval Bottom:7970 ft.Hole Size:

Formation NBRR                     Formation Classification:  GW                     Status:  CM - 4/12/2011                 Interval Top: 7512 ft.    Interval Bottom: 7810 ft.

 Completed Information for Formation NIOBRARA
1st Production Date:N/AChoke Size: 
Formation Name:NIOBRARACommingled:Yes
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:3/14/2006
Treatment Summary:FRAC W/177,903 GALS FRAC FLUID + 238,040# 30/50 SAND & 12,000# 12/20 SAND
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
No Initial Test Data was found for formation NBRR.
Perforation Data:
Interval Top:7512 ft.# Of Holes:240
Interval Bottom:7810 ft.Hole Size:
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
10/2024 - 09/2025

BOE/MCFE/GOR Calculations
Production for Previous 12 Months
October 2024 - September 2025i
Total Oil Produced (Barrels)523
Total Gas Produced (MCF)1026
GOR1961
GOR DeterminationBOE
Average BOE per Day1.890
Average MCFE per Day10.995

 Federal Financial Assurance  i 

 Tribal Well  i No