Calculate Conductivity (k) from Packer Test result.
[ReviewAZON asin=”1406733539″ display=”inlinepost”]First determine what zone is represented by the Packer intervals:
- Zone 1: Unsaturated zone above the water table.
- Zone 2: Intermediate zone with both unsaturated and saturated zone.
- Zone 3: Zone below the water table
Determine head loss from published graphs – required when flow is >2 gallons/min
- 2.Q=Average flow recorded during test (unit: gpm or ft/s)
- 3.Cs=Conductivity coefficient for saturated material (depends on length of test interval
- and diameter of borehole; get it from published graph.
- 1.r=radios of borehole (unit: feet)
- 2.H=Effective Head=h1+h2-L
- 3.h1=depth to water table from pressure gage
- 4.h2=amount of pressure applied for the test zone (recorded during packer test)
- 5.L=friction loss; calculate if flow is >2gpm from published graphs.
Find Cs from Published graph:
Calculate L (Friction loss from published graphs/tables)
You may need: Hydraulic Field Manual for the table of head loss based on Darcy’s Law:
Buy Here: [ReviewAZON asin=”0071348328″ display=”inlinepost”]