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 Surface Location
 API# 05-123-42972
Well Classification: OW Status: SI - 11/1/2025
Well Name/No:Rattlesnake Federal #LC10-785
(Click Well Name for Production Data)
Click Here for Transporter Gatherer Info
Operator:NOBLE ENERGY INC - 100322
(Click Operator Name for Company Detail Report)
Federal Or State Lease #:
Facility Status:SIStatus Date11/1/2025
FacilityID:445245LocationID:421847
County:WELD #123Location:NWNW 22 9N59W 6
Field:DJ HORIZONTAL NIOBRARA - #16950Elevation:4914 ft.
Basin:DENVER (DJ) BASIN  
Planned Location:400FNL  1236 FWLLat/Long: 40.742330 / -103.969170Lat/Long Source: Field Measured
As Drilled Location:Footages Not AvailableLat/Long: 40.742338 / -103.969181Lat/Long Source: Field Measured
 
FracFocus
Disclosure: Sidetrack #00
Start Date: 11/5/2017
End Date: 11/19/2017
Reported: 3/4/2019
Originally Reported: 12/20/2017
Days to report: 470
Days to report: 31
 Wellbore And Formation Details -- select either a wellbore Or formation to expand.
 

Wellbore #00             Wellbore Classification: OW             Status: SI - 11/1/2025             Measured TD: 17299 ft.    Vertical TD: 6104 ft.

 Wellbore Data for Original WellboreWellbore Classification: OW        SI - 11/1/2025
Wellbore PermitHORIZONTAL
Permit #: Expiration Date:3/28/2018
Proposed Top PZ Location:Sec:22 Twp: 9N 59W Footage: 400 FNL  328 FWL
Bottom Hole Location:Sec:10 Twp: 9N 59W Footage: 330 FNL  330 FWL
Proposed Depth/Form:16478 ft.
Surface Mineral Owner Same:No
Mineral Owner:FEESurface Owner:FEE
Unit: Unit Number:
Formation And Spacing:Code: NBRR , Formation: NIOBRARA , Order: 535-681 , Unit Acreage: 3840, Drill Unit: S:10,11,14,15,22,23
Casing:String Type: CONDUCTOR, Hole Size: 26 in., Size: 16 in., Top: 0 ft., Depth: 80 ft., Weight: 42 , Citings Type: PLANNED
Cement:Sacks: 6, Top: 0 ft., Bottom: 80 ft.
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1850 ft., Weight: 36 , Citings Type: PLANNED
Cement:Sacks: 535, Top: 0 ft., Bottom: 1850 ft.
Casing:String Type: 1ST, Hole Size: 8.5 in., Size: 5.5 in., Top: 0 ft., Depth: 17307 ft., Weight: 20 , Citings Type: PLANNED
Cement:Sacks: 1816, Top: , Bottom:
Casing:String Type: 1ST LINER, Hole Size: 6.125 in., Size: 4.5 in., Top: 6385 ft., Depth: 16478 ft., Weight: 11.6 , Citings Type: PLANNED
Cement:Sacks: , Top: , Bottom:

Wellbore Completed
Completion Date:7/3/2017
Spud Date:6/27/2017Spud Date Is:ACTUAL
Measured TD:17299 ft.Measured PB depth:17239 ft.
True Vertical TD:6104 ft.True Vertical PB depth:6104 ft.
Top PZ Location:Sec:22 Twp: 9N 59WFootage: 400 FNL  328 FWL
Bottom Hole Location:Sec:10 Twp: 9N 59WFootage: 331 FNL  333 FWL
Log Types:CBL, MWD/LWD, NEU, (Resistivity in API 123-42969)
Casing:String Type: CONDUCTOR, Hole Size: 26 in., Size: 16 in., Top: 0 ft., Depth: 110 ft., Weight: 42.09 , Citings Type: ACTUAL
Cement:Sacks: 64, Top: 0 ft., Bottom: 110 ft., Determination Method: VISU
Casing:String Type: SURF, Hole Size: 13.5 in., Size: 9.625 in., Top: 0 ft., Depth: 1933 ft., Weight: 36 , Citings Type: ACTUAL
Cement:Sacks: 680, Top: 0 ft., Bottom: 1933 ft., Determination Method: VISU
Casing:String Type: 1ST, Hole Size: 8.5 in., Size: 5.5 in., Top: 0 ft., Depth: 17289 ft., Weight: 20 , Citings Type: ACTUAL
Cement:Sacks: 1910, Top: 2245 ft., Bottom: 17289 ft., Determination Method: CBL
FormationInterval TopLog BottomCoredDSTs
PARKMAN3432 ft.
SUSSEX4159 ft.
SHANNON4636 ft.
TEEPEE BUTTES5442 ft.
NIOBRARA6253 ft.

Formation NBRR                     Formation Classification:  OW                     Status:  SI - 11/1/2025                 Interval Top: 6639 ft.    Interval Bottom: 17142 ft.

 Completed Information for Formation NIOBRARA
1st Production Date:1/10/2018Choke Size:20.000 in.
Formation Name:NIOBRARACommingled:No
Production Method:
Open Hole Completion:No
Formation Treatment
Treatment Type:FRACTURE STIMULATION
Treatment Date:11/5/2017Treatment End Date:11/19/2017
Treatment Summary:FRAC'D WITH 1850 BBLS 28% HCl, 408574 BBLS FLUID, 14393620 LBS 40/70 SAND.
Total fluid used in treatment (bbls):408574Max pressure during treatment (psi):8932
Total gas used in treatment (mcf):Fluid density (lbs/gal):8.46
Type Of gas:Number Of staged intervals:264
Total acid used in treatment (bbls):1850Min frac gradient (psi/ft):50.70
Recycled water used in treatment (bbls):Total flowback volume recovered (bbls):25997
Fresh water used in treatment (bbls):408574Disposition method For flowback:DISPOSAL
Total proppant used (lbs):14393620Green completions techniques utilized:Yes
Reason green techniques Not utilized: 
Tubing Size:2.375 in.Tubing Setting Depth:6499 ft.
Tubing Packer Depth:6504 ft.Tubing Multiple Packer:
Open Hole Top:Open Hole Bottom:
Initial Test Data:
Test Date:1/17/2018Test Method:FLOWING
Hours Tested:24Gas Type:WET
Gas Disposal:SOLD
Test TypeMeasure
BBLS_H2O 909
BBLS_OIL 493
BTU_GAS 1385
CALC_BBLS_H2O 909
CALC_BBLS_OIL 493
CALC_GOR 480
CALC_MCF_GAS 237
CASING_PRESS 25
GRAVITY_OIL 52
MCF_GAS 237
TUBING_PRESS 782
Perforation Data:
Interval Top:6639 ft.# Of Holes:1584
Interval Bottom:17142 ft.Hole Size:0.48 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)12022
Total Gas Produced (MCF)13447
GOR1118
GOR DeterminationBOE
Average BOE per Day39.272
Average MCFE per Day227.805

 Federal Financial Assurance  i 

 Tribal Well  i No