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COGIS - WELL SCOUT CARD
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 Surface Location
 API# 05-123-31532		Well Classification: OW Status: PR - 3/1/2025
Well Name/No:Longhorn B #5-36H
(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 #:8755/5
Facility Status:PRStatus Date3/1/2025
FacilityID:417003LocationID:414175
County:WELD #123Location:SESW 36 12N63W 6
Field:HEREFORD - #34200Elevation:5343 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:667FSL  2555 FWLLat/Long: 40.960517 / -104.381514Lat/Long Source: Field Measured
As Drilled Location:Footages Not AvailableLat/Long: 40.960519 / -104.381517Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: OW             Status: PR - 3/1/2025             Measured TD: 11187 ft.    Vertical TD: 7360 ft.

 Wellbore Data for Original WellboreWellbore Classification: OW        PR - 3/1/2025
Wellbore PermitHORIZONTAL
Permit #: Expiration Date:5/3/2012
Proposed Top PZ Location:Sec:36 Twp: 12N 63W Footage: 1437 FSL  2519 FWL
Bottom Hole Location:Sec:36 Twp: 12N 63W Footage: 643 FNL  2188 FWL
Proposed Depth/Form:11233 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:STATESurface Owner:STATE
Unit: Unit Number:
Formation And Spacing:Code: NBRR , Formation: NIOBRARA , Order: 421-2 , Unit Acreage: 640, Drill Unit: ALL
Casing:String Type: CONDUCTOR, Hole Size: 20 in., Size: 16 in., Top: , Depth: 60 ft., Weight: , Citings Type: PLANNED
Cement:Sacks: , Top: 0 ft., Bottom: 60 ft.
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: , Depth: 1425 ft., Weight: 36 Lbs , Citings Type: PLANNED
Cement:Sacks: 740, Top: 0 ft., Bottom: 1425 ft.
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: , Depth: 7736 ft., Weight: 23 Lbs , Citings Type: PLANNED
Cement:Sacks: 820, Top: 0 ft., Bottom: 7736 ft.
Casing:String Type: 1ST LINER, Hole Size: 6.25 in., Size: 4.5 in., Top: , Depth: 11352 ft., Weight: 11.6 Lbs , Citings Type: PLANNED
Cement:Sacks: 315, Top: 6900 ft., Bottom: 11352 ft.
Wellbore Completed
Completion Date:6/11/2010
Spud Date:6/2/2010Spud Date Is:ACTUAL
Measured TD:11187 ft.Measured PB depth:7680 ft.
True Vertical TD:7360 ft.True Vertical PB depth:7356 ft.
Top PZ Location:Sec:36 Twp: 12N 63WFootage: 1437 FSL  2519 FWL
Bottom Hole Location:Sec:36 Twp: 12N 63WFootage: 643 FNL  2188 FWL
Log Types:
Casing:String Type: CONDUCTOR, Hole Size: 20 in., Size: 16 in., Top: 0 ft., Depth: 60 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: , Top: 0 ft., Bottom: 60 ft., Determination Method:
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1410 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: 718, Top: 0 ft., Bottom: 1410 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: 0 ft., Depth: 7634 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: 850, Top: 0 ft., Bottom: 7634 ft., Determination Method: CBL
Casing:String Type: 1ST LINER, Hole Size: 6.25 in., Size: 4.5 in., Top: 0 ft., Depth: , Weight: , Citings Type: ACTUAL
Cement:Sacks: , Top: , Bottom: , Determination Method:
FormationInterval TopLog BottomCoredDSTs
WHITE RIVER0 ft.
FOX HILLS903 ft.
PIERRE1129 ft.
SUSSEX3454 ft.
HYGIENE4380 ft.
NIOBRARA7262 ft.

Formation NBRR                     Formation Classification:  OW                     Status:  PR - 3/1/2025                  Interval Top: 7886 ft.    Interval Bottom: 11112 ft.

 Completed Information for Formation NIOBRARA
1st Production Date:9/7/2010Choke Size: 
Formation Name:NIOBRARACommingled:Yes
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:7/27/2010
Treatment Summary:574,328 gals treated water, 542,243 gals gelled water and 871,830# 20/40 sand and 516,625# 30/50 sand.
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:9/10/2010Test Method:Flowing
Hours Tested:24Gas Type:SHALE
Gas Disposal:FLARED
Test TypeMeasure
BBLS_H2O 115
BBLS_OIL 230
CALC_GOR 583
CASING_PRESS 390
GRAVITY_OIL 32
MCF_GAS 134
Perforation Data:
Interval Top:7886 ft.# Of Holes:714
Interval Bottom:11112 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)1185
Total Gas Produced (MCF)2563
GOR2162
GOR DeterminationBOE
Average BOE per Day4.437
Average MCFE per Day25.736

 Federal Financial Assurance  i 

 Tribal Well  i No