Borehole conductivity profiler

Details Borehole conductivity profiler Borehole conductivity profiler

2005-06-28

2005-06-28

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Borehole or drilling

Fluid flow measuring or fluid analysis

C073S038000, C073S152010, C166S250020, C166S250030

Reexamination Certificate

active

06910374

ABSTRACT:
A method of using an everting borehole liner to perform fluid conductivity measurements in materials surrounding a pipe, tube, or conduit, such as a borehole below the surface of the Earth. A flexible liner is everted (turned inside out) into the borehole with an internal pressurized fluid. As the liner displaces the ambient fluid in the borehole into the surrounding formation, the rate of descent of the liner is recorded. As the impermeable liner covers the flow paths in the wall of the hole, the descent rate slows. From the measured descent rate, the flow rates out discrete sections of the borehole are determined.

REFERENCES:
patent: 4064211 (1977-12-01), Wood
patent: 4385885 (1983-05-01), Wood
patent: 6026900 (2000-02-01), Keller
patent: 6244846 (2001-06-01), Keller
patent: 6283209 (2001-09-01), Keller
patent: 6298920 (2001-10-01), Keller
patent: 55-67410 (1980-05-01), None

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