Apparatus and method for evaluating subterranean environments

Details Apparatus and method for evaluating subterranean environments Apparatus and method for evaluating subterranean environments

2007-04-03

2007-04-03

Williams, Hezron (Department: 2856)

Measuring and testing

Borehole or drilling

Fluid flow measuring or fluid analysis

C073S152410

Reexamination Certificate

active

11114132

ABSTRACT:
A subterranean environment evaluating apparatus and method, which measure, e.g., the geologic distribution coefficient in a subterranean environments using, e.g., a pit formed by boring. The subterranean environment evaluating apparatus comprises a geologic evaluation sensor, a pump, an analyzer, a PC, a data transmitter, etc., and it is disposed in the pit formed underground by boring. The geologic evaluation sensor is disposed to form a thin layer channel defined by the surface of a rock bed. Groundwater mixed with a tracer is caused to flow through the sensor, and the analyzer measures a change of tracer concentration in the groundwater between before and after contact of the groundwater with the rock bed. The PC determines a breakthrough curve from the change of tracer concentration, thereby calculating the distribution coefficient (Kd) between the rock bed and the groundwater and the effective diffusion coefficient of the rock bed.

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