Apparatus and methods for sampling and testing a formation...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation

Reexamination Certificate

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C166S250010, C073S152180

Reexamination Certificate

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06871713

ABSTRACT:
A formation test tool and methods are described that enable sampling and measurements of parameters of fluids contained in a borehole while reducing the time required for taking such samples and measurements and reducing the risk of formation damage due to sampling induced pressure spikes. The tool has a quick response control system for controlling a fluid transfer device in response to fluid pressure near a sampling port.

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patent: WO 0237072 (2002-05-01), None

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