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Production wells having permanent downhole formation evaluation sensors

  • US 5,662,165 A
  • Filed: 08/12/1996
  • Issued: 09/02/1997
  • Est. Priority Date: 02/09/1995
  • Status: Expired due to Term
First Claim
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1. A system for monitoring a formation surrounding a borehole in a production well, comprising:

  • a production well having at least one borehole, said borehole including at least two production zones, each of said production zones including;

    a completion string in said borehole for producing a fluid from the formation surrounding the borehole; and

    at least one downhole formation evaluation sensor permanently located downhole for sensing a downhole formation parameter in an area associated with at least a portion of said completion string wherein said sensed downhole formation parameter constitutes a parameter which is not normally present within the wellbore.

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