Formation evaluation while drilling

Wells – Processes – Sampling well fluid

Reexamination Certificate

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Details

C175S059000

Reexamination Certificate

active

08056625

ABSTRACT:
An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device.

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