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 Surface Location
 API# 05-123-32081		Well Classification: OW Status: SI - 3/1/2025
Well Name/No:Critter Creek #11-07H
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:BISON IV OPERATING LLC - 10670
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:SIStatus Date3/1/2025
FacilityID:418971LocationID:418967
County:WELD #123Location:SESE 7 11N63W 6
Field:HEREFORD - #34200Elevation:5345 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:501FSL  501 FELLat/Long: 40.930956 / -104.468183Lat/Long Source: Field Measured
As Drilled Location:Footages Not AvailableLat/Long: 40.930956 / -104.468181Lat/Long Source: Field Measured
 
FracFocus
Disclosure: Sidetrack #00
Start Date: 3/3/2011
End Date: 3/3/2011
Reported: 8/3/2011
Prior to rule 205A.b.(2)(A)
Days to report: 153
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: OW             Status: AB - 8/3/2010             Measured TD: 7942 ft.    Vertical TD: 7529 ft.

 Wellbore Data for Original WellboreWellbore Classification: OW        AB - 8/3/2010
Wellbore PermitHORIZONTAL
Permit #: Expiration Date:8/25/2012
Proposed Top PZ Location:Sec:7 Twp: 11N 63W Footage: 861 FSL  727 FEL
Bottom Hole Location:Sec:7 Twp: 11N 63W Footage: 1107 FSL  896 FEL
Proposed Depth/Form:12383 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: NBRR , Formation: NIOBRARA , Order: N/A , Unit Acreage: 640, Drill Unit: ALL
Casing:String Type: CONDUCTOR, Hole Size: 20 in., Size: 16 in., Top: , Depth: 60 ft., Weight: 42 , Citings Type: PLANNED
Cement:Sacks: 50, Top: 0 ft., Bottom: 60 ft.
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: , Depth: 1450 ft., Weight: 36 , Citings Type: PLANNED
Cement:Sacks: 755, Top: 0 ft., Bottom: 1450 ft.
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: , Depth: 7988 ft., Weight: 23 , Citings Type: PLANNED
Cement:Sacks: 845, Top: 0 ft., Bottom: 7988 ft.
Casing:String Type: 1ST LINER, Hole Size: 6 in., Size: 4.5 in., Top: , Depth: 12383 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: 320, Top: 7238 ft., Bottom: 12383 ft.
Wellbore Completed
Completion Date:1/1/2011
Spud Date:12/12/2010Spud Date Is:ACTUAL
Measured TD:7942 ft.Measured PB depth:6400 ft.
True Vertical TD:7529 ft.True Vertical PB depth:6398 ft.
Bottom Hole Location:Sec:7 Twp: 11N 63WFootage: 1107 FSL  896 FEL
Log Types:
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1491 ft., Weight: 36 , Citings Type: ACTUAL
Cement:Sacks: 660, Top: 0 ft., Bottom: 1491 ft., Determination Method: CALC
Additional Cement:String Type: 1ST , Top: 6185 ft., Depth: , Bottom: 7100 ft., Sacks: 516, Method: KOP
FormationInterval TopLog BottomCoredDSTs
HYGIENE4400 ft.
SHARON SPRINGS7501 ft.
NIOBRARA7636 ft.
  No formation data to display.

Sidetrack #01             Wellbore Classification: OW             Status: SI - 3/1/2025             Measured TD: 12114 ft.    Vertical TD: 7540 ft.

 Wellbore Data for Sidetrack #01Wellbore Classification: OW        SI - 3/1/2025
Wellbore PermitHORIZONTAL
Permit #: Expiration Date:12/28/2012
Proposed Top PZ Location:Sec:7 Twp: 11N 63W Footage: 1027 FSL  647 FEL
Bottom Hole Location:Sec:7 Twp: 11N 63W Footage: 600 FNL  2250 FWL
Proposed Depth/Form:12136 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: NBRR , Formation: NIOBRARA , Order: 421-3 , Unit Acreage: 640, Drill Unit: All
Casing:String Type: CONDUCTOR, Hole Size: 20 in., Size: 16 in., Top: , Depth: 60 ft., Weight: 42 , Citings Type: PLANNED
Cement:Sacks: 50, Top: 0 ft., Bottom: 60 ft.
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: , Depth: 1491 ft., Weight: 36 , Citings Type: PLANNED
Cement:Sacks: 660, Top: 0 ft., Bottom: 1491 ft.
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: , Depth: 7774 ft., Weight: 23 , Citings Type: PLANNED
Cement:Sacks: 845, Top: 0 ft., Bottom: 7774 ft.
Casing:String Type: 1ST LINER, Hole Size: 6 in., Size: 4.5 in., Top: 6683 ft., Depth: 12136 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: 320, Top: 6683 ft., Bottom: 12136 ft.
Wellbore Completed
Completion Date:1/1/2011
Spud Date:12/12/2010Spud Date Is:ACTUAL
Measured TD:12114 ft.Measured PB depth:12108 ft.
True Vertical TD:7540 ft.True Vertical PB depth:7540 ft.
Top PZ Location:Sec:7 Twp: 11N 63WFootage: 1051 FSL  669 FEL
Bottom Hole Location:Sec:7 Twp: 11N 63WFootage: 639 FNL  2202 FWL
Log Types:CBL/VDL/GR/CCL
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1491 ft., Weight: 36 , Citings Type: ACTUAL
Cement:Sacks: 660, Top: 0 ft., Bottom: 1491 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: 0 ft., Depth: 7792 ft., Weight: 23 , Citings Type: ACTUAL
Cement:Sacks: 881, Top: 890 ft., Bottom: 7792 ft., Determination Method: CBL
Casing:String Type: 1ST LINER, Hole Size: 6 in., Size: 4.5 in., Top: 7046 ft., Depth: 12110 ft., Weight: 11.6 , Citings Type: ACTUAL
Cement:Sacks: , Top: , Bottom: , Determination Method:
FormationInterval TopLog BottomCoredDSTs
HYGIENE4400 ft.
SHARON SPRINGS7501 ft.
NIOBRARA7636 ft.

Formation NBRR                     Formation Classification:  OW                     Status:  SI - 3/1/2025                  Interval Top: 8106 ft.    Interval Bottom: 11782 ft.

 Completed Information for Formation NIOBRARA
1st Production Date:3/10/2011Choke Size: 
Formation Name:NIOBRARACommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:2/22/2011
Treatment Summary:106,663 Gals Linear Gel Pad 15, 115,836 Gals Linear Gel 15, 109,343 Gals Lightning 22 XL Pad, 292,782 Lightning 22 XL Gel, 91,248 Gals Treated Fresh Water, 577,200 # 20/40 Sand.
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:3/13/2011Test Method:Flowing
Hours Tested:24Gas Type:SHALE
Gas Disposal:FLARED
Test TypeMeasure
BBLS_H2O 225
BBLS_OIL 170
BTU_GAS 1545
CASING_PRESS 160
GRAVITY_OIL 34
MCF_GAS 7
Perforation Data:
Interval Top:8106 ft.# Of Holes:504
Interval Bottom:11782 ft.Hole Size:0.39 in.
Primary Well Designation:
None      i
            All DesignationsDate
Reported PluggedN 
Out Of Service RepurposedN 
Out Of ServiceN 
Inactive ExceptionN 
Noticed InactiveN 
Defined InactiveN 
Low ProducingN 

BOE/MCFE/GOR Calculations
Production for Previous 12 Months
October 2024 - September 2025i
Total Oil Produced (Barrels)533
Total Gas Produced (MCF)1314
GOR2465
GOR DeterminationBOE
Average BOE per Day2.083
Average MCFE per Day12.074

 Federal Financial Assurance  i 

 Tribal Well  i No