Crosshole testing
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Pump. t. Slope Inclinometer. Slope Inclinometer. Shear Wave Velocity: V s = x/t. Downhole Hammer (Source). Velocity Transducer (Geophone Receiver). x. packer. Oscilloscope. Crosshole Testing. ASTM D 4428. Test Depth. Note: Verticality of casing

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Crosshole testing l.jpg

Pump

t

Slope

Inclinometer

Slope

Inclinometer

Shear Wave Velocity:

Vs = x/t

Downhole

Hammer

(Source)

Velocity

Transducer

(Geophone

Receiver)

x

packer

Oscilloscope

Crosshole Testing

ASTM D 4428

Test

Depth

Note: Verticality of casing

must be established by

slope inclinometers to correct

distances x with depth.

PVC-cased

Borehole

PVC-cased

Borehole


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