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 Surface Location
 API# 05-013-06150		Well Classification: GW Status: SI - 12/1/2025
Well Name/No:MARY MILLER #1-35
(Click Well Name for Production Data)		Click Here for Transporter Gatherer Info
Operator:EXTRACTION OIL & GAS INC - 10459
(Click Operator Name for Company Detail Report)		Federal Or State Lease #:
Facility Status:SIStatus Date12/1/2025
FacilityID:206655LocationID:321314
County:BOULDER #013Location:NWNE 35 1N69W 6
Field:WATTENBERG - #90750Elevation:5231 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:660FNL  1947 FELLat/Long: 40.012997 / -105.081418Lat/Long Source: Calculated From Footages
As Drilled Location:Footages Not AvailableLat/Long: 40.012950 / -105.081460Lat/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: 8706 ft.    Vertical TD: 0 ft.

 Wellbore Data for Original WellboreWellbore Classification: GW        SI - 12/1/2025
Wellbore Permit
Permit #:19821610 Expiration Date:10/5/1983
Proposed Depth/Form:8675 ft.
Surface Mineral Owner Same:Yes
Mineral Owner:FEESurface Owner:Not available
Unit: Unit Number: 
Formation And Spacing:Code: JSND , Formation: J SAND , Order: 0 , Unit Acreage: 320, Drill Unit: E2
Formation And Spacing:Code: NB-CD , Formation: NIOBRARA-CODELL , Order: 407 , Unit Acreage: 320, Drill Unit: E2
Wellbore Completed
Completion Date:9/11/1991
Spud Date:10/11/1982Spud Date Is:ACTUAL
Measured TD:8706 ft.Measured PB depth:8683 ft.
True Vertical TD:0 ft.True Vertical PB depth:
Log Types:CDL, DIL, PROLOG
Casing:String Type: SURF, Hole Size: 12.25 in., Size: 8.625 in., Top: 0 ft., Depth: 687 ft., Weight: 24 , Citings Type: ACTUAL
Cement:Sacks: 475, Top: 0 ft., Bottom: , Determination Method:
Casing:String Type: 1ST, Hole Size: 7.875 in., Size: 4.5 in., Top: 0 ft., Depth: 8706 ft., Weight: 10.5&11.6, Citings Type: ACTUAL
Cement:Sacks: 360, Top: 0 ft., Bottom: , Determination Method:
FormationInterval TopLog BottomCoredDSTs
SUSSEX4806 ft.
BENTONITE5074 ft.
SHANNON5394 ft.
CODELL8132 ft.
J SAND8565 ft.

Formation JSND                     Formation Classification:  GW                     Status:  SI - 12/1/2025                 Interval Top: 8567 ft.    Interval Bottom: 8582 ft.

 Completed Information for Formation J SAND
1st Production Date:3/19/1983Choke Size:0.000 in.
Formation Name:J SANDCommingled:Yes
Production Method:FLOWING
Open Hole Completion:
Formation Treatment
Treatment Date:9/11/1991
Treatment Summary:50,000# 100 M, 530,000$ 20/40 M, 3,866 BLW
Tubing Size:2.375 in.Tubing Setting Depth:7735 ft.
Tubing Packer Depth:Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:3/30/1983Test Method:FLOWING
Hours Tested:Gas Type:
Gas Disposal:SOLD
Test TypeMeasure
BBLS_H2O 16
BBLS_OIL 2
CASING_PRESS 750
MCF_GAS 440
TUBING_PRESS 250
Perforation Data:
Interval Top:8567 ft.# Of Holes:30
Interval Bottom:8582 ft.Hole Size:

Formation JNBCD                   Formation Classification:  GW                   Status:  CM - 5/1/2020                  Interval Top: 7900 ft.    Interval Bottom: 8584 ft.

 Completed Information for Formation J-NIOBRARA-CODELL
1st Production Date:12/29/1991Choke Size:0.313 in.
Formation Name:J-NIOBRARA-CODELLCommingled:Yes
Production Method:FLOWING
Open Hole Completion:
Tubing Size:2.375 in.Tubing Setting Depth:8570 ft.
Tubing Packer Depth:7735 ft.Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:12/31/1991Test Method:FLOWING
Hours Tested:24Gas Type:
Gas Disposal:
Test TypeMeasure
BBLS_H2O 30
BBLS_OIL 25
CALC_GOR 11000
CASING_PRESS 1250
MCF_GAS 275
TUBING_PRESS 550
Perforation Data:
Interval Top:7900 ft.# Of Holes:41
Interval Bottom:8584 ft.Hole Size:

Formation NB-CD                   Formation Classification:  GW                   Status:  SI - 12/1/2025                 Interval Top: 7900 ft.    Interval Bottom: 8148 ft.

 Completed Information for Formation NIOBRARA-CODELL
1st Production Date:3/19/1983Choke Size:0.156 in.
Formation Name:NIOBRARA-CODELLCommingled:Yes
Production Method:FLOWING
Open Hole Completion:
Formation Treatment
Treatment Date:9/11/1991
Treatment Summary:ACIDIZE - DROP 20. 7/8 IN., 1/3 SP. GR. BALLS. BALL WELL OFF TO 6,000#. FRAC W/ 24,000# 100 M, 417,000# 20/40 M. 18 BPM@ 6,500#
Tubing Size:2.375 in.Tubing Setting Depth:8570 ft.
Tubing Packer Depth:7735 ft.Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:9/16/1991Test Method:FLOWING
Hours Tested:24Gas Type:SHALE
Gas Disposal:SOLD
Test TypeMeasure
BBLS_H2O 10
BBLS_OIL 37
MCF_GAS 135
Perforation Data:
Interval Top:7900 ft.# Of Holes:11
Interval Bottom:8148 ft.Hole Size:0.37 in.
Primary Well Designation:
Low Producing      i
            All DesignationsDate
Reported PluggedN 
Out Of Service RepurposedN 
Out Of ServiceN 
Inactive ExceptionN 
Noticed InactiveN 
Defined InactiveN 
Low ProducingYProduction Period
01/2025 - 12/2025

BOE/MCFE/GOR Calculations
Production for Previous 12 Months
January 2025 - December 2025i
Total Oil Produced (Barrels)0
Total Gas Produced (MCF)34
GOR
GOR DeterminationMCFE
Average BOE per Day0.014
Average MCFE per Day0.093

 Federal Financial Assurance  i 

 Tribal Well  i No