Formation fluid sampling and hydraulic testing tool and...

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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Details

C073S152280, C175S059000, C175S230000

Reexamination Certificate

active

07066281

ABSTRACT:
A drilling apparatus that includes a formation fluid sampling and hydraulic testing tool for a drilling apparatus that includes a drilling string comprised of a drilling pipe and a drilling bit is provided. The tool is mounted on a string that comprises from top to bottom a pressure reduction valve, an expandible and collapsible packer bladder assembly, the sampling tool, and a lower expandible and collapsible packer bladder assembly, disposed between the drilling pipe and the drilling bit. Associated with the packer assemblies are pressure and vacuum storage devices for inflation and deflation respectively of the bladders of the packer assemblies.

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patent: 2004/0231408 (2004-11-01), Shammai
patent: 2004/0231842 (2004-11-01), Shammai et al.

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