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AIR-SLUG LOW-PRESSURE PACKER SYSTEM TO FACILITATE CHARACTERIZATION OF FRACTURED ROCK

AIR-SLUG LOW-PRESSURE PACKER SYSTEM TO FACILITATE CHARACTERIZATION OF FRACTURED ROCK. Georgia Ground Water Resources Conference University of Georgia April 25, 2005. STRADDLE PACKER. Compressed Air. Saprolite. Upper Packer. Head Measurement Hydraulic Test Sample. Separation Pipe.

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AIR-SLUG LOW-PRESSURE PACKER SYSTEM TO FACILITATE CHARACTERIZATION OF FRACTURED ROCK

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  1. AIR-SLUG LOW-PRESSURE PACKER SYSTEM TO FACILITATE CHARACTERIZATION OF FRACTURED ROCK Georgia Ground Water Resources Conference University of Georgia April 25, 2005

  2. STRADDLE PACKER Compressed Air Saprolite Upper Packer • Head Measurement • Hydraulic Test • Sample Separation Pipe Lower Packer

  3. Pipe String (LP) STRADDLE PACKER Pipe Plug PIPE PLUG (Cherne Industries) Dia.-11.89cm Length-45cm • Inflation Pressure: 35psi • Differential Pressure: 13psi (9m) • ~$150.00 per Pipe Plug SEPARATION PIPE • ~1.4m PVC pipe • 5/16” reinforcement rod Separation Pipe Pipe Plug

  4. Transducer and DAQ Regulator Valve Compressed Air h t Slug in Slug out Air Slug Test

  5. FIELD APPLICATION(SC Botanical Gardens, Clemson Well Field) Photo Log WELL-(LAR-4) FRX. LOCATION

  6. FIELD DATA Slug Volume 5.5L t0.37 Example at 50.2m Transmissivity t0.37=~20sec dwell2=0.023m2 T=0.001m2/s T = dwell2/t0.37 Similar to Hvorslev Method

  7. 0.013 0.0016 (LP) PACKER RESULTS

  8. (HP) STRADDLE PACKER ROCTEST Packers • Length-150cm • Inflation Pressure: 800psi • Differential Pressure: 200psi • ~$2000.00 per packer

  9. VERIFICATION

  10. CONCLUSIONS • The (HP) straddle packer system costs $4000.00 and requires a winch and several personnel to deploy, which can increase operational costs. • The (LP) Straddle packer system costs $300.00 and can be deployed without a winch using one or two personnel • The (LP) packer system gives T results that are similar to the (HP) packer system T results. • The effectiveness of the (LP) packer seal can be improved by stacking additional packers.

  11. ACKNOWLEGEMENTS Murdoch, Larry (Advisor) Schweisinger, Todd (Student) Elmore, Ryan (student) Hall, Richard (Student) Thanks To: National Science Foundation (NSF EAR 0001146)

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