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 Surface Location
 API# 05-123-31573
Well Classification: OW Status: PR - 4/1/2025
Well Name/No:Longhorn G #4-36H
(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 Date4/1/2025
FacilityID:417122LocationID:414175
County:WELD #123Location:SESW 36 12N63W 6
Field:HEREFORD - #34200Elevation:5343 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:641FSL  2525 FWLLat/Long: 40.960444 / -104.381622Lat/Long Source: Field Measured
As Drilled Location:Footages Not AvailableLat/Long: 40.960444 / -104.381625Lat/Long Source: Field Measured
 
FracFocus
Disclosure: Sidetrack #00
Start Date: 4/7/2014
End Date: 4/11/2014
Reported: 2/4/2015
Originally Reported: 6/10/2014
Days to report: 299
Days to report: 60
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: OW             Status: PR - 4/1/2025             Measured TD: 11814 ft.    Vertical TD: 7870 ft.

 Wellbore Data for Original WellboreWellbore Classification: OW        PR - 4/1/2025
Wellbore PermitHORIZONTAL
Permit #: Expiration Date:5/29/2014
Proposed Top PZ Location:Sec:36 Twp: 12N 63W Footage: 937 FSL  2462 FWL
Bottom Hole Location:Sec:36 Twp: 12N 63W Footage: 900 FNL  600 FWL
Proposed Depth/Form:11906 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:STATESurface Owner:STATE
Unit: Unit Number:
Formation And Spacing:Code: GRNHN , Formation: GREENHORN , Order: , Unit Acreage: , Drill Unit:
Casing:String Type: CONDUCTOR, Hole Size: 20 in., Size: 16 in., Top: 0 ft., Depth: 50 ft., Weight: 42 , Citings Type: PLANNED
Cement:Sacks: 60, Top: , Bottom: 50 ft.
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.25 in., Top: 0 ft., Depth: 1272 ft., Weight: 36 , Citings Type: PLANNED
Cement:Sacks: 426, Top: 0 ft., Bottom:
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: 0 ft., Depth: 8070 ft., Weight: 23 , Citings Type: PLANNED
Cement:Sacks: 683, Top: , Bottom:
Casing:String Type: 1ST LINER, Hole Size: 6 in., Size: 4.5 in., Top: 7168 ft., Depth: 11744 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: 270, Top: , Bottom:

Wellbore Completed
Completion Date:3/18/2014
Spud Date:2/3/2014Spud Date Is:ACTUAL
Measured TD:11814 ft.Measured PB depth:11767 ft.
True Vertical TD:7870 ft.True Vertical PB depth:7870 ft.
Top PZ Location:Sec:36 Twp: 12N 63WFootage: 999 FSL  2449 FWL
Bottom Hole Location:Sec:36 Twp: 12N 63WFootage: 758 FNL  2181 FWL
Log Types:CBL/MWD/Triple Combo/Caliper/Density/Induction/DensityNeutron, Mud
Casing:String Type: CONDUCTOR, Hole Size: 24 in., Size: 16 in., Top: 0 ft., Depth: 60 ft., Weight: 42 , Citings Type: ACTUAL
Cement:Sacks: 42, Top: 0 ft., Bottom: 60 ft., Determination Method: VISU
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1306 ft., Weight: 36 , Citings Type: ACTUAL
Cement:Sacks: 520, Top: 0 ft., Bottom: 1306 ft., Determination Method: VISU
Casing:String Type: 1ST, Hole Size: 8.75 in., Size: 7 in., Top: 0 ft., Depth: 8121 ft., Weight: 23 , Citings Type: ACTUAL
Cement:Sacks: 825, Top: 430 ft., Bottom: 8121 ft., Determination Method: CBL
Casing:String Type: 1ST LINER, Hole Size: 6.25 in., Size: 4.5 in., Top: 7870 ft., Depth: 11810 ft., Weight: 11.6 , Citings Type: ACTUAL
Cement:Sacks: 285, Top: 7870 ft., Bottom: 11814 ft., Determination Method: CALC
FormationInterval TopLog BottomCoredDSTs
WHITE RIVER0 ft.
FOX HILLS892 ft.
PIERRE1117 ft.
SUSSEX3248 ft.
SHANNON4264 ft.
NIOBRARA7277 ft.
FORT HAYS7520 ft.
CODELL7544 ft.
CARLILE7555 ft.
GREENHORN7685 ft.

Formation GRNHN                   Formation Classification:  OW                   Status:  PR - 4/1/2025                  Interval Top: 8183 ft.    Interval Bottom: 11737 ft.

 Completed Information for Formation GREENHORN
1st Production Date:N/AChoke Size: 
Formation Name:GREENHORNCommingled:No
Production Method:
Open Hole Completion:
Formation Treatment
Treatment Type:FRACTURE STIMULATION
Treatment Date:4/7/2014Treatment End Date:4/13/2014
Treatment Summary:20 stages: 4,870,040# 100 Mesh Sand, 542,030# 40/70 Sand, 94962 bbls fresh water, 516 bbls acid.
Total fluid used in treatment (bbls):95478Max pressure during treatment (psi):8172
Total gas used in treatment (mcf):0Fluid density (lbs/gal):8.34
Type Of gas:Number Of staged intervals:20
Total acid used in treatment (bbls):516Min frac gradient (psi/ft):0.86
Recycled water used in treatment (bbls):0Total flowback volume recovered (bbls):3962
Fresh water used in treatment (bbls):94962Disposition method For flowback:DISPOSAL
Total proppant used (lbs):8412070Green completions techniques utilized:Yes
Reason green techniques Not utilized: 
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_H2O 325
BBLS_OIL 241
BTU_GAS 1702
CALC_BBLS_H2O 325
CALC_BBLS_OIL 241
CALC_GOR 800
CALC_MCF_GAS 208
CASING_PRESS 115
GRAVITY_OIL 40
MCF_GAS 208
TUBING_PRESS 100
Perforation Data:
Interval Top:8183 ft.# Of Holes:519
Interval Bottom:11737 ft.Hole Size:0.4 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)3442
Total Gas Produced (MCF)3138
GOR911
GOR DeterminationBOE
Average BOE per Day10.870
Average MCFE per Day63.050

 Federal Financial Assurance  i 

 Tribal Well  i No