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System for sampling from formation while drilling

  • US 10,180,064 B2
  • Filed: 05/21/2014
  • Issued: 01/15/2019
  • Est. Priority Date: 03/04/2014
  • Status: Active Grant
First Claim
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1. A system of formation sampling while drilling comprising:

  • a suction pup joint provided to pump out and clean formation fluid;

    a sampling pup joint provided to sample and store the formation fluid;

    a setting pup joint provided between the suction pup joint and the sampling pup joint and provided to establish a fluid channel between the formation fluid, the suction pup joint and the sampling pup joint; and

    an electrohydraulic high voltage connection device provided between the setting pup joint and the sampling pup joint,wherein the suction pup joint is provided with a first electric motor, a first piston cylinder and a first electromagnetic valve in the interior thereof which are connected, the first electric motor being provided to supply operation power of pumping out and cleaning to the suction pup joint, andwherein the sampling pup joint is independent of the suction pup joint and provided with a second electric motor, a second piston cylinder, a second electromagnetic valve and a sample storage room in the interior thereof which are connected, the second electric motor being provided to supply operation power of sampling and storing to the sampling pup joint.

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