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COGIS - WELL SCOUT CARD
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 Surface Location
 API# 05-073-06523		Well Classification: OW Status: PR - 6/1/2025
Well Name/No:BIG SKY #4-11
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:POLARIS PRODUCTION OPCO LLC - 10793
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:PRStatus Date6/1/2025
FacilityID:432241LocationID:432244
County:LINCOLN #073Location:NWNW 11 6S54W 6
Field:ARIKAREE CREEK - #2914Elevation:5193 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:615FNL  622 FWLLat/Long: 39.548770 / -103.414600Lat/Long Source: Field Measured
As Drilled Location:Footages Not AvailableLat/Long: 39.548770 / -103.414600Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: OW             Status: AB - 6/21/2015             Measured TD: 6193 ft.

 Wellbore Data for Original WellboreWellbore Classification: OW        AB - 6/21/2015
Wellbore Permit
Permit #: Expiration Date:3/18/2015
Proposed Depth/Form:8600 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: ABCK , Formation: ARBUCKLE , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: ATOK , Formation: ATOKA , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: CHRK , Formation: CHEROKEE , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: LGKC , Formation: LANSING-KANSAS CITY , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MRRW , Formation: MORROW , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MRTN , Formation: MARMATON , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MSSP , Formation: MISSISSIPPIAN , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: SPGN , Formation: SPERGEN , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WFCMP , Formation: WOLFCAMP , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WRSW , Formation: WARSAW , Order: , Unit Acreage: , Drill Unit:
Wellbore Completed
Completion Date:4/12/2013
Spud Date:4/12/2013Spud Date Is:ACTUAL
Measured TD:6193 ft.Measured PB depth:4355 ft.
True Vertical TD:True Vertical PB depth:
Log Types:No logs were ran on this wellbore as fish got stuck in the hole and we were unable to retrieve it. 185 sks of cmt was put on top of fish and a sidetrack was drilled to continue to drill the well to total depth.
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 301 ft., Weight: 24 , Citings Type: ACTUAL
Cement:Sacks: 70, Top: 0 ft., Bottom: 301 ft., Determination Method: CALC
Casing:String Type: OPEN HOLE, Hole Size: 7.875 in., Size: , Top: 301 ft., Depth: 6193 ft., Weight: , Citings Type: ACTUAL
Cement:Sacks: , Top: , Bottom: , Determination Method:
Additional Cement:String Type: OPEN HOLE , Top: 4355 ft., Depth: , Bottom: 5140 ft., Sacks: 185, Method: CALC

Formation SPGN                     Formation Classification:  OW                     Status:  CM - 6/21/2015                 Interval Top: 8020 ft.    Interval Bottom: 8070 ft.

 Completed Information for Formation SPERGEN
1st Production Date:5/26/2013Choke Size: 
Formation Name:SPERGENCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Type:ACID JOB
Treatment Date:6/17/2015Treatment End Date:6/19/2015
Treatment Summary:Acidized with 186 bbls of 2%KCL with additives and displaced with 46 bbls of 2% KCL. Dropped 150 1.1 bio balls
Total fluid used in treatment (bbls):232Max pressure during treatment (psi):2690
Total gas used in treatment (mcf):Fluid density (lbs/gal):
Type Of gas:Number Of staged intervals:
Total acid used in treatment (bbls):186Min frac gradient (psi/ft):
Recycled water used in treatment (bbls):46Total flowback volume recovered (bbls):0
Fresh water used in treatment (bbls):Disposition method For flowback:
Total proppant used (lbs):Green completions techniques utilized:--
Reason green techniques Not utilized: 
Tubing Size:2.875 in.Tubing Setting Depth:8154 ft.
Tubing Packer Depth:8259 ft.Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:6/21/2015Test Method:Pumping
Hours Tested:24Gas Type:DRY
Gas Disposal:FLARED
Test TypeMeasure
BBLS_H2O 246
BBLS_OIL 84
BTU_GAS 728
CALC_BBLS_H2O 246
CALC_BBLS_OIL 84
CALC_GOR 357
CALC_MCF_GAS 30
CASING_PRESS 34
GRAVITY_OIL 36
MCF_GAS 30
TUBING_PRESS 60
Perforation Data:
Interval Top:8020 ft.# Of Holes:200
Interval Bottom:8070 ft.Hole Size:0.52 in.

Sidetrack #01             Wellbore Classification: OW             Status: PR - 6/1/2025             Measured TD: 8350 ft.

 Wellbore Data for Sidetrack #01Wellbore Classification: OW        PR - 6/1/2025
Wellbore Permit
Permit #: Expiration Date:5/14/2015
Proposed Depth/Form:8600 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: ABCK , Formation: ARBUCKLE , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: ATOK , Formation: ATOKA , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: CHRK , Formation: CHEROKEE , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: LGKC , Formation: LANSING-KANSAS CITY , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MRRW , Formation: MORROW , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MRTN , Formation: MARMATON , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: MSSP , Formation: MISSISSIPPIAN , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: SPGN , Formation: SPERGEN , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WFCMP , Formation: WOLFCAMP , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WRSW , Formation: WARSAW , Order: , Unit Acreage: , Drill Unit:
Wellbore Completed
Completion Date:5/14/2013
Spud Date:4/12/2013Spud Date Is:ACTUAL
Measured TD:8350 ft.Measured PB depth:8259 ft.
True Vertical TD:True Vertical PB depth:
Log Types:Surface Cement, Production Cement, BHC Sonic_Final, PEX Initial Run, Triple Combo, Borehole Compensated Sonic, Induction, Nuclear Porosity, Caliper, CBL/CCL/GR and Surveys
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 301 ft., Weight: 24 , Citings Type: ACTUAL
Cement:Sacks: 70, Top: 0 ft., Bottom: 301 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 5.5 in., Top: 0 ft., Depth: 8350 ft., Weight: 17 , Citings Type: ACTUAL
Cement:Sacks: 1218, Top: 1795 ft., Bottom: 8350 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
DAKOTA4586 ft.4647 ft.
LANSING-KANSAS CITY6882 ft.7206 ft.
MARMATON7207 ft.7313 ft.
CHEROKEE7386 ft.7407 ft.
ATOKA7552 ft.7799 ft.
MORROW7800 ft.7927 ft.
KEYES7928 ft.7959 ft.
SPERGEN8016 ft.8037 ft.
WARSAW8077 ft.8124 ft.
ARBUCKLE8125 ft.8350 ft.

Formation SPGN                     Formation Classification:  OW                     Status:  PR - 6/1/2025                  Interval Top: 8020 ft.    Interval Bottom: 8070 ft.

 Completed Information for Formation SPERGEN
1st Production Date:5/26/2013Choke Size: 
Formation Name:SPERGENCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Type:ACID JOB
Treatment Date:4/5/2015Treatment End Date:4/7/2015
Treatment Summary:Re-acidized with 3500 gallons (84 bbls) of Parene-721 solvent, 150 bioballs and displaced with 46 bbls of 2% KCl
Total fluid used in treatment (bbls):130Max pressure during treatment (psi):2870
Total gas used in treatment (mcf):Fluid density (lbs/gal):
Type Of gas:Number Of staged intervals:
Total acid used in treatment (bbls):84Min frac gradient (psi/ft):
Recycled water used in treatment (bbls):Total flowback volume recovered (bbls):0
Fresh water used in treatment (bbls):46Disposition method For flowback:
Total proppant used (lbs):Green completions techniques utilized:--
Reason green techniques Not utilized: 
Formation Treatment
Treatment Type:
Treatment Date:9/27/2013Treatment End Date:N/A
Treatment Summary:No treatment completed on this formation.
Total fluid used in treatment (bbls):Max pressure during treatment (psi):
Total gas used in treatment (mcf):Fluid density (lbs/gal):
Type Of gas:Number Of staged intervals:
Total acid used in treatment (bbls):Min frac gradient (psi/ft):
Recycled water used in treatment (bbls):Total flowback volume recovered (bbls):
Fresh water used in treatment (bbls):Disposition method For flowback:
Total proppant used (lbs):Green completions techniques utilized:--
Reason green techniques Not utilized: 
Formation Treatment
Treatment Type:
Treatment Date:5/26/2013Treatment End Date:N/A
Treatment Summary:No treatment was done to this formation.
Total fluid used in treatment (bbls):Max pressure during treatment (psi):
Total gas used in treatment (mcf):Fluid density (lbs/gal):
Type Of gas:Number Of staged intervals:
Total acid used in treatment (bbls):Min frac gradient (psi/ft):
Recycled water used in treatment (bbls):Total flowback volume recovered (bbls):
Fresh water used in treatment (bbls):Disposition method For flowback:
Total proppant used (lbs):Green completions techniques utilized:--
Reason green techniques Not utilized: PIPELINE
Tubing Size:2.875 in.Tubing Setting Depth:8154 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:4/9/2015Test Method:Pumping
Hours Tested:24Gas Type:DRY
Gas Disposal:FLARED
Test TypeMeasure
BBLS_H2O 111
BBLS_OIL 117
BTU_GAS 2490
CALC_BBLS_H2O 111
CALC_BBLS_OIL 117
CALC_GOR 85
CALC_MCF_GAS 10
CASING_PRESS 34
GRAVITY_OIL 36
MCF_GAS 10
TUBING_PRESS 50
Perforation Data:
Interval Top:8020 ft.# Of Holes:200
Interval Bottom:8070 ft.Hole Size:0.52 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)6937
Total Gas Produced (MCF)2363
GOR340
GOR DeterminationBOE
Average BOE per Day20.131
Average MCFE per Day116.768

 Federal Financial Assurance  i 

 Tribal Well  i No