Types of Wells. Deep Rock Wells Consolidated Formations. Water Well Rehabilitation Technologies. Presented by: Tim Kelly Todd Kerry.

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1 Water Well Rehabilitation Technologies Presented by: Tim Kelly Todd Kerry Types of Wells Deep Rock Gravel Pack Deep Rock Wells Consolidated Formations 1

2 Gravel Packed Wells Unconsolidated Formations Well Monitoring Use of Airline Gauge Static Water Level Pumping Water Level Drawdown Specific Capacity Yearly Professional Well and Pump Inspection 2

3 Well Monitoring Record Keeping Weekly Water Level Measurements Flow Measurements Seasonal Trends Why Are These So Important Case Study 3

4 Common Causes of Pump Failure Improper Operation Pipe Failure/Deterioration Sanding Conditions Electrical Issues Aggressive Water 4

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10 Well Deterioration Mineral Encrustation Biofouling Mechanical Blockage Mechanical Failure 10

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13 BIOFILM Plug Screens and Pore Spaces in Gravel and Sand Can Create Electrolytic Corrosion Taste and Odor Problems 13

14 BIOFILM PROPERTIES Chlorine resistant Form protective sheath (glycocalyx) Mucopolysacaride secretion Disinfectant will not penetrate to reach cell Well Rehabilitation Evaluation B.A.R.T.S. Test Down Hole Inspection 14

15 When A Well Needs to Be Rehabilitated BEFORE it experiences a 20% loss in Specific Capacity 15

16 Investigational Down Hole Well Inspection 16

17 Well Rehabilitation Technologies Methods Surge Block / Wire Brush High Pressure Jetting Chemical Rehabilitation / Acidizing Dynamiting / Directional Blasting AirBurst HyRIP 17

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19 AirBurst Technology is a process that stimulates selected zones in a water well A small volume of high pressure inert gas is used to generate high intensity pressure pulses in a well Step-By-Step Process 19

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21 After First Round of AirBurst AirBurst Vs. BoreBlast 1 Year Later AirBurst Prior to AirBurst S.C. was 92.2 S.C. after AirBurst Was at 130gallons/per/ft/DD 41% Increase in Capacity Better than ever 11.1% improvement over Boreblast! Well Hasn t been rehabilitated yet BoreBlast Prior to BoreBlast S.C. was 92.5 S.C. after BoreBlast was at 117gallons/per/ft/DD 26.48% Increase in Capacity Worse after treatment 1 year later Treatment was required after 1 Year 21

22 Well Treatments Utilized Prior To AirBurst Pressurized acid Sonar-Jet QC-21 2 rounds of BoreBlast Well Lost 23% S.C. during development Well had been out of service for 2 months Total Cost of Development $60, AFTER AIRBURST Before AirBurst Specific Capacity was 1.28 gal/ft After AirBurst Rehabilitation gal/ft Increase in capacity of 3510% Unit Well No. 22 BEFORE Prior AirBurst S.C Throttled to 800gpm due to aggressive sanding Pumping Equipment Failure AFTER S.C gal/ft Was capable of pumping 1655gpm without sand 50.69% Improvement 22

23 UNIT WELL No Year Later Subsequent flow testing proved sanding conditions were reversed. Specific Capacity increased from 20.35gallons/per/ft of D.D. to % Increase over the year 86% Increase over all Case Study Proved AirBurst Had Significant Improvement over other Technologies utilized in Town AirBurst In Rockford BEFORE Unit Well No. 11 S.C Unit Well No. 9A S.C Unit Well No. 17 S.C Unit Well No. 18 S.C Unit Well No. 28 S.C in 1968 AFTER Unit Well No. 11 S.C = 83% Increase Unit Well No. 9A S.C = 25.8% Increase Unit Well No. 17 S.C = 137% Increase Unit Well No. 18 S.C = 169% Increase Unit Well No. 28 S.C = 29% Increase 23

24 HyRIP High Rate Injection Process 24

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26 Case Study Lake Geneva Sand & Gravel Aquifer Constructed Gravel Wall Well 24 Stainless Steel Screen Total Depth: 106 feet Orig. Specific Capacity: 44.8 Specific Capacity New Before After Treatments Case Study Rome Water Utility Sand & Gravel Aquifer Constructed Gravel Wall Well 20 Stainless Steel Screen Total Depth: 86 feet Orig. Specific Capacity: 17.4 Specific Capacity New Before After Treatments Case Study Chippewa Falls Alluvial Aquifer Constructed Gravel Wall Well 20 Stainless Steel Screen Total Depth: 97 feet Orig. Specific Capacity: New Before After 26

27 Case Study McHenry Sand & Gravel Aquifer Constructed Gravel Well Wells 12 Well Screen Depth: 95 Original Specific Capacity: 9.8 Specific Capacity New Before After Treatments Case Study Cedar Grove Limestone Aquifer Constructed Limestone Well Depth: Well : 450 feet Original Specific Capacity: 1.62 Specific Capacity New Before After Treatments Bio-Purge Controls Biofilm in Potable Water Systems NSF-60 Approved Phosphate-Free 27

28 Well Repair Relining Re-Screening Aquastream Replacement of Grout Plug 28

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32 New Illinois Laws & Regulations Affecting the Water Industry IEPA New Mercury Ban SB1213 Ban on Mercury Seals Sec. 27. Sale and distribution of Certain mercury-added products prohibited. On or after July 1, 2012, no person shall sell, offer to sell, or distribute the following mercury-added products in this State: (13) Seals What Does this Mean? According to the IEPA, the following apply Ban on Byron Jackson (BJ) Type H Mercury Sealed Motors No longer allow New BJ type H motors to be sold Ban on repairs to existing BJ mercury seals Ban on remanufactured BJ motors with Mercury seals 32

33 BJ Mercury Cross Sectional Diagram 33

34 Byron Jackson Submersible Motors Can Still be Used!! Repairs to an Existing motor can be made IF the mercury seal is converted to a double mechanical Seal Common users of double mechanical sealed motors, Power Generation Companies, Manufacturing, and Governmental agencies have moved away from Mercury seals. Alternatives to Mercury Sealed Motors Sun-Star Hitachi CentriPro Centrilift Exodine Indar Franklin Electric Conventional Water Filled Motor 34

35 Typical Oil Filled Motor Types of Pumps SUBMERSIBLE TURBINE High Speed Motors Vs. Low Speed High Speed Submersibles Cost Lower Longevity Cannot be rebuilt generally Faster Turnaround Better fit in small wells Low Speed Submersibles Cost Higher Longevity Re-buildable Motor repairs 6 weeks Larger motors require larger wells 35

36 Water Lubricated Vertical Turbine Pumps Oil Lubricated Vertical Turbine Pumps Vertical Hollow Shaft Motors 36

37 Submersible Vs. Turbine Pumps Submersibles Cost of Installation Lower Motor Location Bottom Cable Costs Longevity & Efficiency Crooked Wells application Preventative Maintenance Low Maintenance Monitoring pumping level Turbines Cost of Installation Higher Motor Locations Top Lineshaft Costs Longevity & Efficiency Not good for crooked Wells Preventative Maintenance High Maintenance Check Oil & Packing Monitoring pumping level Submersible Motors Questions? Tim Kelly Todd Kerry 37

38 Thank You! Please do not hesitate to contact us with any questions you may have, or to set up a free onsite evaluation and inspection of your water system. (888) Office (262) Tim s Cell (630) Todd s Cell 38