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 Surface Location
 API# 05-069-06240
Well Classification: ERIW Status: IJ - 8/1/2020
Well Name/No:CLARKS LAKE MUDDY UNIT #15-1
(Click Well Name for Production Data)
Click Here for Transporter Gatherer Info
Operator:BLACKROCK ENERGY CORP - 10746
(Click Operator Name for Company Detail Report)
Federal Or State Lease #:
Facility Status:IJStatus Date8/1/2020
FacilityID:217053LocationID:307173
County:LARIMER #069Location:SESE 15 9N68W 6
Field:CLARKS LAKE - #11300Elevation:5302 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:620FSL  1295 FELLat/Long: 40.742249 / -104.985921Lat/Long Source: Calculated From Footages
As Drilled Location:Footages Not AvailableLat/Long: 40.742325 / -104.985842Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: ERIW             Status: IJ - 8/1/2020             Measured TD: 6202 ft.

 Wellbore Data for Original WellboreWellbore Classification: ERIW        IJ - 8/1/2020
Wellbore Permit
Permit #:19841879 Expiration Date:4/19/1985
Proposed Depth/Form:6160 ft.
Surface Mineral Owner Same:Not available
Mineral Owner:FEESurface Owner:Not available
Unit: Unit Number: 
Formation And Spacing:Code: MDDYJ , Formation: MUDDY J , Order: , Unit Acreage: 20, Drill Unit:
Casing:String Type: 2ND, Hole Size: 5.125 in., Size: 4.5 in., Top: 0 ft., Depth: 5970 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: , Top: , Bottom: 5970 ft.

Wellbore Completed
Completion Date:N/A
Spud Date:4/15/1985Spud Date Is:ACTUAL
Measured TD:6202 ft.Measured PB depth:
True Vertical TD:True Vertical PB depth:
Log Types:
Log Types:DIL/GR, DSN/CDL/GR/CAL, CBL/VDL/GR
Casing:String Type: CONDUCTOR, Hole Size: 15 in., Size: 13.375 in., Top: 0 ft., Depth: 138 ft., Weight: 64 , Citings Type: ACTUAL
Cement:Sacks: 75, Top: 0 ft., Bottom: 138 ft., Determination Method: VISU
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 627 ft., Weight: 24 , Citings Type: ACTUAL
Cement:Sacks: 320, Top: 0 ft., Bottom: 627 ft., Determination Method: VISU
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 5.5 in., Top: 0 ft., Depth: 6200 ft., Weight: 15.5 , Citings Type: ACTUAL
Cement:Sacks: 265, Top: 4890 ft., Bottom: 6200 ft., Determination Method: CBL
Casing:String Type: 2ND, Hole Size: 5.5 in., Size: 4.5 in., Top: 0 ft., Depth: 5966 ft., Weight: 11.6 , Citings Type: ACTUAL
Cement:Sacks: 125, Top: 0 ft., Bottom: 5966 ft., Determination Method: VISU
Casing:String Type: STAGE TOOL, Hole Size: 7.875 in., Size: 5.5 in., Top: 0 ft., Depth: 2056 ft., Weight: 15.5 , Citings Type: ACTUAL
Cement:Sacks: 325, Top: 600 ft., Bottom: 2056 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
CODELL5468 ft.
MUDDY J5984 ft.
SKULL CREEK6120 ft.

Formation JSND                     Formation Classification:  ERIW                     Status:  IJ - 8/1/2020                  Interval Top: 5986 ft.    Interval Bottom: 6054 ft.

 Completed Information for Formation J SAND
1st Production Date:10/27/2017Choke Size: 
Formation Name:J SANDCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Type:
Treatment Date:3/24/2020Treatment End Date:N/A
Treatment Summary:Installed new second casing string 4 1/2" diameter
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 Date:5/24/1985
Treatment Summary:5986-6054; ACIDIZE W/1800 GAL SAN-1(7.5% HC1); SAND FRAC W/60000 GAL GEL WTR & 140,000# 20/40 MESH SAND.
Tubing Size:2.375 in.Tubing Setting Depth:5936 ft.
Tubing Packer Depth:5943 ft.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 240
BBLS_OIL 142
GRAVITY_OIL 37
Perforation Data:
Interval Top:5986 ft.# Of Holes:18
Interval Bottom:6054 ft.Hole Size:0.32 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
December 2024 - November 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