Drill Cuttings Disposal Company, LLC
WORLD WIDE RE-INJECTION PROJECTS
CUTTING RE-INJECTION (CRI) BASIC FLOW DIAGRAM

DCDC CRI UNIT

FOUNDERS OF DCDC EXPERIENCE

  • First to inject successfully in many countries
  • Usually only one injection point, if failed, finished
  • Have always found a subsurface strata we could dispose waste successfully and did so
  • Took over/Fixed other’s CRI Unit/project
  • In many country projects with no previous wells drilled, used seizmic data to design disposal project
  • Have had over 40 CRI projects ongoing around the world, at one time, while planning others
    		•

    CRI OPERATIONS
    OPERATOR LOCATION INJECTION INFORMATION BBLS. INJ. WELLHEAD SYSTEM HOLE SIZE DRILL RATE # OF WELLS
    British Gas Offshore Tunisia Imperable Claystone 162,476 Mud Line Suspension, SubseaTemplate 12 1/4 400 FPH 13
    Hunt Oil West Texas Land Chalk 178,426 tbg/perf Pit 3000 B/d n/a
    Amerada Hess North Dakota, Land Tight Sandstone 48,452 tbg/perf Pit 2700 B/d 1
    Hunt Oil South Louisiana, Land Loose Sandstone 675,000 tbg/perf Pit 3500 B/d 10
    Numerous Opererators (1,7) Gulf of Mexico Sand/Shale Intervals 1,200,000 tbg/perf/annular, MLS, depleted zones 12 1/4 280 FPH 18
    Numberous Operators Gulf of Mexico Sand/Shale Intervals 2,300,000+ Annular 12/1/2004 300 FPH 85
    Shell U.K. (6) Brent Bravo North Sea Clay/Sandstone 132,476 Annular 12 1/4 200 FPH 7
    BP U.K. (5,7) BP Andrew North Sea Sand/Shale 137,476 tbg/perf/annular 16    250 FPH 9
    BP Venezuela (7) Barge Clean Out Claystone/Geologic Upthrust 56,000 Annular 16 1500 B/d n/a
    Phillips Alaska (4,7) Cook Inlet Alaska Sand/Coal/Shale 48,279 Injection String 12 1/4 150 FPH 4
    Unocal/Spirit Energy (7,1) Gulf of Mexico (offshore) Sand/Shale 12,724 Annular 12 1/4 1 Mile/24 Hrs. 10
    Enron India (7) Offshore India Imperable Claystone 32,472 tbg/perf/annular 12 1/4 400 FPH 6
    Pan Canadian/Nova Scotia (7,2,1) North Atlantic Imperable Shale/Clay 24,274 tbg/perf 12 1/4 200 FPH 3
    Conoco (7,1) Gulf of Mexico Sand/Shale 18,275 Mud Line Suspension 6 1/2 Rig Trash 1
    Unocal/Thailand (7) Gulf of Thailand Tight Sandstone 4,671 depleted zone tbg/perf n/a Hg Prod Slud 1
    Numerous Opererators Gulf of Mexico Depleted Sandstone 74,387 tbg/perf n/a NORM/LSA 16
    BP Wytah Farm (3,7) South of England, Land Sand 12,476 3000 ft Horizontal tbg/perf 17 1/2 200 FPH 2
    Shell Sakhalin Offshore Sakhalin Sand 187,354 Disposal Well/Annular 17 1/2 200 FPH 6
    Exxon Sakhalin Offshore Sakhalin Fine, Soft Sand/Clay Mix 14,723 Annular 12 1/4 200FPH 1
    1- Vacuum Assist   2- Montoring Pkg, Fully automated, single lift Pkg   3- Comingle Production and Slurry 4- tbg injection allowed injection of drill cuttings immediately after drilling out from undre surface   5- North Sea record of 2200 Barrels of cutting slum processed and injected   6- Best Mechanical Engineering Award 1997- OTC   7- Ongoing


    SHELL - NORTH SEA BRENT CRI UNIT

    Shell Unit

    CRI DESIGNED FORMAT

  • Regulatory regime, top side, environment and subsurface
  • Type of Rig or Platform, place equipment, utilities, inj. Line setup for zero discharge and collection of waste’s
  • Annular, tbg/depleted zone, disposal well
  • Subsurface Disposal Strata
  • Disposal point Verses production or fresh water zone,fracture’s or faulting and well’s to be drilled
  • Hole Size/Drill Rate/Volume to be injected
  • Required Safe Injection Pressure
  • Casing/Cement Design/path
  • Topside design
  • Installation/, Operations Plan and Contingencies

    •  

    CRI DESIGNED FORMAT

    Install, Commission, Initiate Injection Test, Compare to Expected Formation Reaction, Adjust if necessary Ongoing Monitoring/Adjustment/ and Slurry Placement Assurance Monthly/End of Well Reports and Follow Up Suspend or Plug Injection Conduit, End  Report
    Survey Rig, Design Surface Equipment/Interface Prepare Detail Procedures Manual including pumping program, displacements, pressure profiles, ISIP’s, Drawdown’s, Contingencies, Initial Injection Test Procedures, Slurry Rheology/Particle Size Requirements, Preventative Maintenance, Monitoring Reports, Chain of Command, Permit, Well Construction, Feasibility Study, Contingencies, etc. Personnel Selection/Training/Support Regulatory Permits, Logistics/Customs Requirements
    Research all Offset Well Data, Seismic Data, Wells, Faults, Production, Fractures in area of injection, geology of area Review Regulatory Regime and Operator Requirements Review Future well drilling plans Prepare inputs for Proprietary Fracture Model, Test different Injection Zones, Determine best practices approach, make recommendations Outputs are used to design disposal well, and/or review future and existing well construction, cementing, develop procedures
    Experienced, Focused Management review all data, run Models, and are involved in preparing the operations procedures manual, disposal design, Rig Survey, surface equipment design/interface, Personnel Selection and Training, therefore, are completely familiar and Client has One party Responsibility, Our Program has worked since 1987!


    OUR FRACTURE MODELING IS DONE BY AN EXPERIENCED CRI OPERATIONS MANAGER, WHO IS WORKING ON YOUR PROJECT TEAM

    DISPOSAL REGIME INPUT DATA
  • Formation Lithology
  • Mechanical and chemical properties
  • Fracture Gradient Profile
  • Pore Pressure Curve
  • Anticipated Csg. /Csg. Cement Design
  • Existing Wells/Csg./Cement Design in the area of planned CRI
  • Geology of the area
  • Formation/Resistivity logs
    		•

    DISPOSAL REGIME OUTPUT DATA
  • Cuttings Injection Rates/Pressures
  • Disposal Profile
  • Slurry Particle Size/Rheology
  • Disposal Formation
  • Confining Formation/cmt. required
    		•


    TYPICAL SLURRY PROPERTIES

     

    PARTICLE SIZE ANALYSIS


    FRACTURE PROFILES


    VERTICAL WIDTH PROFILES


    ANNULAR INJECTION PROFILE



    SOME RE-INJECTION OPTIONS



    BRENT BRAVO SUMMARY

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    BB-32-S3
    Total barrels of slurry re-injected
    		  
    = 10,919
    Documented cost to run C.R.I.
    		  
    = 64,559.64
    Total cost per barrel of slurry re-injected
    		  
    = 5.91
     
    		 
    BB-14-S1
    Total barrels of slurry re-injected
    		  
    = 9,155
     
    Documented cost to run C.R.I.
    		 = 101,729.64
     
    Total cost per barrel of slurry re-injected
    		  
    = 11.11
     
    		 
    BB-19-S2
    Total barrels of slurry re-injected
    		  
    = 4,414
     
    Documented cost to run C.R.I.
    		 = 78,469.66
     
    Total cost per barrel of slurry re-injected
    		  
    = 17.78
     
    		 
    BB-01-S1
    Total barrels of slurry re-injected
    		  
    = 12,773
     
    Documented cost to run C.R.I.
    		 = 53,528.48
     
    Total cost per barrel of slurry re-injected
    		  
    = 4.19
     
    		 
    BB-01-S2
    Total barrels of slurry re-injected
    		  
    = 7,267
     
    Documented cost to run C.R.I.
    		 = 45,833.86
     
    Total cost per barrel of slurry re-injected
    		  
    = 6.31
     
    		 
    BB-01-S3
    Total barrels of slurry re-injected
    		  
    = 9,034
     
    Documented cost to run C.R.I.
    		 = 94,131.72
     
    Total cost per barrel of slurry re-injected
    		  
    = 10.42
     
    		 
     
    The average cost per barrel (Over 6 Wells)
    		 = 8.18
     
    The average cost per tonne (Over 6 Wells)
    		  
    = 42.87



    INJECTION PRESSURE AND CUMULATIVE VOLUME COMPARATIVE GRAPH
    Drill Cuttings Disposal Company