Use of distributed temperature sensors during wellbore treatments

  • US 7,055,604 B2
  • Filed: 07/28/2003
  • Issued: 06/06/2006
  • Est. Priority Date: 08/15/2002
  • Status: Active Grant
First Claim
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1. A method for treating a drilled well, the method comprising the steps of:

  • positioning distributed temperature sensors on a fiber along an interval within a well, wherein the distributed temperature sensors provide substantially continuous temperature monitoring along the interval;

    obtaining a baseline temperature profile across the interval;

    monitoring substantially continuously the temperature along the interval;

    calculating a differential temperature profile across the interval relative to the baseline temperature profile;

    injecting a fluid into the well and into one or more zones surrounding the interval;

    shutting-in the well until the temperature in the well substantially stabilizes;

    monitoring the shut-in temperature along the interval during the shut-in period;

    determining the shut-in temperature deviation relative to the baseline temperature profile across the interval; and

    determining the one or more formation zones in which the injected fluid flowed.

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