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 Surface Location
 API# 05-103-10427
Well Classification: GW Status: SI - 12/1/2025
Well Name/No:EUREKA UNIT #8812C L20 397
(Click Well Name for Production Data)
Click Here for Transporter Gatherer Info
Operator:QB ENERGY OPERATING LLC - 10844
(Click Operator Name for Company Detail Report)
Federal Or State Lease #:COC 65559
Facility Status:SIStatus Date12/1/2025
FacilityID:271879LocationID:316390
County:RIO BLANCO #103Location:NWSW 20 3S97W 6
Field:SULPHUR CREEK - #80090Elevation:6722 ft.
Basin:PICEANCE BASIN  
Planned Location:1331FSL  15 FWLLat/Long: 39.770393 / -108.313065Lat/Long Source: Calculated From Footages
As Drilled Location:Footages Not AvailableLat/Long: 39.770562 / -108.312950Lat/Long Source: Field Measured
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: GW             Status: SI - 12/1/2025             Measured TD: 10860 ft.    Vertical TD: 10860 ft.

 Wellbore Data for Original WellboreWellbore Classification: GW        SI - 12/1/2025
Wellbore Permit
Permit #:20040587 Expiration Date:4/12/2005
Proposed Depth/Form:
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:FEE
Unit:EUREKA UNIT Unit Number: 
Formation And Spacing:Code: ROLCR , Formation: ROLLINS-CORCORAN , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: SEGO , Formation: SEGO , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WMFK , Formation: WILLIAMS FORK , Order: , Unit Acreage: , Drill Unit:
Formation And Spacing:Code: WSGR , Formation: WASATCH-GREENRIVER , Order: , Unit Acreage: , Drill Unit:

Wellbore Completed
Completion Date:10/9/2004
Spud Date:6/30/2004Spud Date Is:ACTUAL
Measured TD:10860 ft.Measured PB depth:10725 ft.
True Vertical TD:10860 ft.True Vertical PB depth:
Log Types:CBL, PLATFORM EXPRESS
Casing:String Type: CONDUCTOR, Hole Size: 30 in., Size: 20 in., Top: 0 ft., Depth: 103 ft., Weight: 0 , Citings Type: ACTUAL
Cement:Sacks: , Top: 0 ft., Bottom: 0 ft., Determination Method:
Casing:String Type: SURF, Hole Size: 14.42857 in., Size: 9.625 in., Top: 0 ft., Depth: 2570 ft., Weight: 36 , Citings Type: ACTUAL
Cement:Sacks: 1143, Top: 0 ft., Bottom: 2570 ft., Determination Method: CALC
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: 0 ft., Depth: 10860 ft., Weight: 11.6 , Citings Type: ACTUAL
Cement:Sacks: 1495, Top: 4775 ft., Bottom: 10860 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
DOUGLAS CREEK2006 ft.2249 ft.NN
WASATCH2249 ft.6113 ft.NN
OHIO CREEK6113 ft.6507 ft.NN
WILLIAMS FORK6507 ft.9868 ft.NN
ROLLINS9868 ft.10021 ft.NN
COZZETTE10021 ft.10227 ft.NN
CORCORAN10227 ft.10549 ft.NN
SEGO10549 ft.NN

Formation SEGO                     Formation Classification:  GW                     Status:  SI - 12/1/2025                 Interval Top: 10552 ft.    Interval Bottom: 10722 ft.

 Completed Information for Formation SEGO
1st Production Date:N/AChoke Size: 
Formation Name:SEGOCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:10/9/2004
Treatment Summary:SEE CORCORAN
Tubing Size:Tubing Setting Depth:
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
No Initial Test Data was found for formation SEGO.
Perforation Data:
Interval Top:10552 ft.# Of Holes:44
Interval Bottom:10722 ft.Hole Size:0.34 in.

Formation CRCRN                   Formation Classification:  GW                   Status:  SI - 12/1/2025                 Interval Top: 10352 ft.    Interval Bottom: 10474 ft.

 Completed Information for Formation CORCORAN
1st Production Date:N/AChoke Size: 
Formation Name:CORCORANCommingled:Yes
Production Method:FLOWING
Open Hole Completion:No
Formation Treatment
Treatment Date:10/9/2004
Treatment Summary:HOLE IN CSG BELOW 10790'. SET CIBP @ 10812' AND TOP W/1.5 SXS CMT. CSG FAILED PRESSURE TEST,TAGGED CMT AT 10810'(16' BELOW EXPECTED). SET NEW CIBP@10725'. PRESSURE TEST OK. FRAC STAGES 1 THROUGH 2 WITH A TOTAL OF 5800 BBLS SLICKWATER AND 185,000#
Tubing Size:2.375 in.Tubing Setting Depth:10028 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:12/31/2004Test Method:FLOWING
Hours Tested:24Gas Type:
Gas Disposal:SOLD
Test TypeMeasure
BBLS_H2O 0
BBLS_OIL 0
CALC_BBLS_H2O 0
CALC_BBLS_OIL 0
CALC_MCF_GAS 1522
CASING_PRESS 1049
MCF_GAS 1521
TUBING_PRESS 332
Perforation Data:
Interval Top:10352 ft.# Of Holes:44
Interval Bottom:10474 ft.Hole Size:0.34 in.

Formation WMFK                     Formation Classification:  GW                     Status:  SI - 12/1/2025                 Interval Top: 6918 ft.    Interval Bottom: 8145 ft.

 Completed Information for Formation WILLIAMS FORK
1st Production Date:9/21/2004Choke Size:0.375 in.
Formation Name:WILLIAMS FORKCommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Date:9/19/2007
Treatment Summary:ADDITIONAL STAGE 8-10 TREATED WITH A TOTAL OF: 3325 BBLS OF SLICKWATER, 5316 BBLS OF SLICKWATER/CLEARFRAC WITH 299000 LBS 20-40 SAND AND 70000 LBS 20-40 SUPER LC.
Tubing Size:2.375 in.Tubing Setting Depth:6831 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:10/10/2007Test Method:FLOWING
Hours Tested:24Gas Type:DRY
Gas Disposal:SOLD
Test TypeMeasure
BTU_GAS 1170
CASING_PRESS 1150
MCF_GAS 177
TUBING_PRESS 127
Perforation Data:
Interval Top:6918 ft.# Of Holes:87
Interval Bottom:8145 ft.Hole Size:0.42 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)174
Total Gas Produced (MCF)4512
GOR25931
GOR DeterminationMCFE
Average BOE per Day2.600
Average MCFE per Day15.079

 Federal Financial Assurance  i Y

 Tribal Well  i No