Proudly Serving Municipal and Industrial Water Industries for over 50 Years KEVIN BARNES KEITH MYERS

Transcription

1 Proudly Serving Municipal and Industrial Water Industries for over 50 Years KEVIN BARNES KEITH MYERS 1

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3 Water Well Basic Types

4 Typical Screened Well Construction

5 A. Well Clogging Reduce Production-Increase Sand Production A. Asset management Program (AMP) can increase and maintain well yield B. Loss of Efficiency - More Expensive Water A. AMP can decrease pumping cost Affordable and Sustainable C. Deterioration of Water Quality A. Keeping a Well Clean Maintains more consistent water Quality and reduces Under Deposit Corrosion D. Total Loss of Capital Investment A. AMP extends the lifecycle of wells by preventing loss of pore volume

6 a. Biofouling-Mineral Encrustation (As Shown in Pictures) b. Mechanical-Formation Fines (Silt and Clay) c. Chemical- Precipitation of Minerals Maximum 2 feet

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8 Wire Wrap Well Screen

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10 Some Common Well Screen Types Most Common Screen Types Louvered Screen Wire Wrap Well Screen

11 Rehabilitation Treatments Custom tailored to involve many different strategies or a combination of more than one: Chemical Mechanical Thermal CO2 (Aqua Freed) Percussive (Airburst) Explosives (Sonar Jet) Must achieve effective deposit removal Must be custom tailored, based upon cause of problem, well construction details, and type of formation Must have penetration to clean the surrounding formation Must have good agitation

12 1. Pre-Rehabilitation Pump Test 2. Pull pumping equipment 3. Video inspection 4. Wire Brushing 5. Chemical or AquaFreed Application 6. Post Development 7. Video Inspection 8. Re-Install pumping equipment 9. Install AquaGard 10. Post Rehabilitation Pump Test

13 Total Flow 3000 gpm Before Rehabilitation Zone 1: 600 gpm Zone 2: 568 gpm Zone 3: 793 gpm Zone 4: 481 gpm Zone 5: 314 gpm Zone 6: 244 gpm Total Flow 3000 gpm After Rehabilitation Zone 1: 1,074 (+79%) Zone 2: 1,002 (+76%) Zone 3: 267 (-64%) Zone 4: 150 (-69%) Zone 5: 194 (-38%) Zone 6: 313 (+28%)

14 WELL # 26-Long Beach Results (Cost $65, ) ORIGINAL PRESENT ACTUAL G.P.M. 3,000 3,000 3,000 SYSTEM PRESSURE IN PSI DRAWDOWN (FT) SPECIFIC CAPACITY STATIC WATER LEVEL (FT) PUMPING WATER LEVEL (FT) TOTAL DYNAMIC HEAD IN FEET OVERALL EFFICIENCY (WIRE TO WATER) 70% 70% 70% INPUT KW ACRE FEET PUMPED PER DAY KWHR PER ACRE FOOT COST PER KWHR $0.15 $0.15 $0.15 DAYS PUMPED PER YEAR HOURS PUMPED PER DAY ACRE FEET PUMPED PER YEAR COST PER ACRE FOOT $61.15 $94.04 $53.70 OPERATING COST PER YEAR $109, $168, $96, % Improvement PROJECTION FIVE YEAR PROJECTED SAVINGS 100% $360, PAYBACK PERIOD-ACTUAL PAYBACK PROJECTED (YEARS) 0.9

15 What Happens When We Wait Too Long to Rehab? Extensive and Hardened Mineralization!

16 Operate to Failure compared to Maintenance of Wells AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG AG Specific Capacity (GPM/ft) Rehabilitation of Well Rehabilitation of Well Rehabilitation of Periodic Rehabilitations Scheduled AquaGard Injections 1 Rehabilitation of Years

17 a. Aqua Gard Well Asset Management is permanently installed in each well a. In well preventative maintenance device used for scheduled service b. Very cost effective a. Allows wells to be effectively maintained without pulling the pump b. Reduced down time during maintenance service (usually less than 48 hours) c. Equipment allows effective energy to be delivered into a well for cleaning a. Scheduled service compared to reactive rehabilitation d. Fixed budget pricing and potential to spread initial cost Reactive Proactive

18 Energy released during Phase Changes: Liquid to Gas (570 Times Volume Expansion) Liquid to Solid Solid to gas (Sublimation) Carbon Dioxide has surfactant properties that helps to penetrate the aquifer as well as scale & biofilm Formation of Carbonic Acid (H 2 CO 3 ) a mild acid (Approx. ph=5) allowing some dissolution of scale Pore Water Freezing allowing scale and biofouling to be dispersed

19 Injection Lines Sealing the Well for AquaFreed Treatment with Flange or Packer Aqua Freed Packer

20 FIRST STAGE: Seal off the well and inject CO 2 in the gaseous state

21 SECOND STAGE: CO 2 injection in liquid state at controlled pressures

22 THIRD STAGE: Development with double surge block and airlift.

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26 Sustainable Best Practice For Maintaining Water Well Production, Water Quality, Equipment and Distribution Value of the AMP a. Extend Asset Life Cycle Indefinitely b. Improve and/or Maintain Well Performance c. Predictable Cost (Flat and Fixed Annual Fee) d. Reduce Operational Cost (Specific Capacity and Efficiency) e. Maintain Consistent Water Quality f. Transfer Risks g. Single Source Responsibility h. Improved Knowledge of Well and System Condition i. Enables Proactive Maintenance Management of Wells or Entire System a. Time Based Maintenance Program to keep wells clean j. Spread Initial Investment of Rehabilitation or Other Investment Costs

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