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Apparatus and method for characterizing a reservoir

  • US 7,380,599 B2
  • Filed: 06/30/2004
  • Issued: 06/03/2008
  • Est. Priority Date: 06/30/2004
  • Status: Active Grant
First Claim
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1. An apparatus for characterizing a subsurface formation, comprising:

  • a tool body adapted for conveyance within a borehole penetrating the subsurface formation;

    a probe assembly carried by the tool body for sealing off a region of the borehole wall;

    an actuator for moving the probe assembly between a retracted position for conveyance of the tool body and a deployed position for sealing off a region of the borehole wall;

    a perforator extending through the probe assembly for penetrating a portion of the sealed-off region of the borehole wall, wherein the perforator penetrates at least one of a consolidated formation, casing and cement;

    a power source disposed in the tool body and operatively connected to the perforator for operating the perforator;

    a flow line extending through a portion of the tool body and fluidly communicating with at least one of the perforator, the actuator, the probe assembly, and a combination thereof for admitting formation fluid into the tool body; and

    a pump carried within the tool body for drawing formation fluid into the tool body via the flow line.

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