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Method and apparatus for subsurface fluid sampling

  • US 6,964,301 B2
  • Filed: 06/28/2002
  • Issued: 11/15/2005
  • Est. Priority Date: 06/28/2002
  • Status: Expired due to Term
First Claim
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1. A downhole tool positionable in a wellbore surrounded by a layer of contaminated fluid, the wellbore penetrating a subsurface formation having virgin fluid therein beyond the layer of contaminated fluid, the downhole tool comprising:

  • a probe engageable with a sidewall of the wellbore, the probe fluid communication with the subsurface formation whereby the fluids flow from the subterranean formation through the probe and into the downhole tool; and

    a sampling intake positioned within said probe and in non-engagement with the sidewall of the wellbore during sampling, the sampling intake adapted to receive a cross-sectional portion of the fluids flowing through the probe.

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