Apparatus and method for cleaning and sealing a well...

Details Apparatus and method for cleaning and sealing a well... Apparatus and method for cleaning and sealing a well...

2005-10-25

2005-10-25

Kreck, John (Department: 3673)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Indicating, testing or measuring a condition of the formation

C166S100000, C166S222000, C073S152430

Reexamination Certificate

active

06957709

ABSTRACT:
A borehole wall cleaning apparatus and method for obtaining an improved seal between a fluid sampling device and a portion of the borehole wall. Clean drilling fluid is pumped into a drilling tool using a mud pump. A fluid diverter in the tool diverts all or part of the clean drilling fluid through a port to clear a portion of a borehole wall. A sealing pad is moved against the clean portion. A sampling port is exposed to the sealed portion for sampling and/or testing fluid from the formation.

REFERENCES:
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patent: 3782191 (1974-01-01), Whitten
patent: 4339948 (1982-07-01), Hallmark
patent: 4416152 (1983-11-01), Wilson
patent: 4470456 (1984-09-01), Moutray, III
patent: 4951749 (1990-08-01), Carroll
patent: 5056595 (1991-10-01), Desbrandes
patent: 6006834 (1999-12-01), Skinner

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