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 Surface Location
 API# 05-123-32833		Well Classification: GW Status: PA - 2/9/2023
Well Name/No:Antelope #41-31
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:BONANZA CREEK ENERGY OPERATING COMPANY LLC - 8960
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:PAStatus Date2/9/2023
FacilityID:421168LocationID:421165
County:WELD #123Location:NENE 31 5N62W 6
Field:WATTENBERG - #90750Elevation:4606 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:660FNL  660 FELLat/Long: 40.361590 / -104.359310Lat/Long Source: Field Measured
As Drilled Location:777 FNL  578 FELLat/Long: 40.361270 / -104.359020Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: GW             Status: PA - 2/9/2023             Measured TD: 6680 ft.

 Wellbore Data for Original WellboreWellbore Classification: GW        PA - 2/9/2023
Wellbore Permit
Permit #: Expiration Date:1/15/2013
Proposed Depth/Form:6850 ft.
Surface Mineral Owner Same:No
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: NB-CD , Formation: NIOBRARA-CODELL , Order: , Unit Acreage: 40, Drill Unit: NENE
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: , Depth: 400 ft., Weight: 24 , Citings Type: PLANNED
Cement:Sacks: 260, Top: 0 ft., Bottom: 400 ft.
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: , Depth: 6850 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: 247, Top: 5800 ft., Bottom: 6850 ft.
Wellbore Completed
Completion Date:7/6/2011
Spud Date:7/2/2011Spud Date Is:ACTUAL
Measured TD:6680 ft.Measured PB depth:6629 ft.
True Vertical TD:True Vertical PB depth:
Log Types:CBL, GR, CD, CN, Dl
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 8.625 in., Top: 0 ft., Depth: 432 ft., Weight: 24 , Citings Type: ACTUAL
Cement:Sacks: 430, Top: 0 ft., Bottom: 432 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: 0 ft., Depth: 6661 ft., Weight: 11.6 , Citings Type: ACTUAL
Cement:Sacks: 460, Top: 2550 ft., Bottom: 6661 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
PARKMAN3308 ft.
SUSSEX4043 ft.
NIOBRARA6242 ft.
FORT HAYS6492 ft.
CODELL6516 ft.

Formation CODL                     Formation Classification:  GW                     Status:  CM - 12/6/2019                 Interval Top: 6518 ft.    Interval Bottom: 6526 ft.

 Completed Information for Formation CODELL
1st Production Date:N/AChoke Size: 
Formation Name:CODELLCommingled:Yes
Production Method:
Open Hole Completion:No
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:6518 ft.# Of Holes:32
Interval Bottom:6526 ft.Hole Size:0.4 in.

Formation NB-CD                   Formation Classification:  GW                   Status:  AB - 2/9/2023                  Interval Top: 6248 ft.    Interval Bottom: 6526 ft.

 Completed Information for Formation NIOBRARA-CODELL
1st Production Date:N/AChoke Size: 
Formation Name:NIOBRARA-CODELLCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:8/25/2011
Treatment Summary:CODELL PUMPED 33,138 GAL PAD FLUID. PUMPED 102,648 GAL PHASERFRAC W/250,140 LBS 20/40 SAND. ISDP 2958 PSI,ATP 3464 PSI. ATR 22.5 BPM. NIOBRARA PUMPED 19,866 GAL PAD FLUID. PUMPED 118,818 GAL PHASERFRAC W/266,300 LBS. 30/50 SAND., ISDP 3074 PSI. ATP 3819 PSI, ATR 50.5 BPM.
Formation Treatment
Treatment Date:7/31/2011
Treatment Summary:CODELL PUMPED 33,138 GAL PAD FLUID. PUMPED 102,3648 GAL PHASERFRAC W/250,140 LBS 20/40 SAND. ISDP 2958 PSI, ATP 3476 PSI, ATR 22.5 BPM. NIOBRARA PUMPED 19,866 GAL PAD FLUID. PUMPED 118,818 GAL PHASERFRAC W/266,300 LBS. 30/50 SAND. ISDP 3074 PSI, ATP 3819 PSI, ATR 50.5 BPM.
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:N/ATest Method:
Hours Tested:Gas Type:
Gas Disposal:
Test TypeMeasure
BBLS_OIL 43
BTU_GAS 1283
CALC_BBLS_OIL 43
CALC_GOR 628
CALC_MCF_GAS 27
CASING_PRESS 817
GRAVITY_OIL 39
MCF_GAS 27
Perforation Data:
Interval Top:6248 ft.# Of Holes:80
Interval Bottom:6526 ft.Hole Size:0.4 in.

Formation NBRR                     Formation Classification:  GW                     Status:  CM - 12/6/2019                 Interval Top: 6248 ft.    Interval Bottom: 6410 ft.

 Completed Information for Formation NIOBRARA
1st Production Date:N/AChoke Size: 
Formation Name:NIOBRARACommingled:Yes
Production Method:
Open Hole Completion:No
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:6248 ft.# Of Holes:48
Interval Bottom:6410 ft.Hole Size:0.4 in.
Primary Well Designation:
None      i
            All DesignationsDate
Reported PluggedY02/09/2023
Out Of Service RepurposedN 
Out Of ServiceYPlugging Due Date
12/31/2029
Inactive ExceptionN 
Noticed InactiveN 
Defined InactiveN 
Low ProducingN 

BOE/MCFE/GOR Calculations
Production for Previous 12 Months
January 2025 - December 2025i
Total Oil Produced (Barrels)0
Total Gas Produced (MCF)0
GOR
GOR Determination 
Average BOE per Day0.000
Average MCFE per Day0.000

 Federal Financial Assurance  i 

 Tribal Well  i No