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Interface for deploying wireline tools with non-electric string

  • US 7,878,242 B2
  • Filed: 06/04/2008
  • Issued: 02/01/2011
  • Est. Priority Date: 06/04/2008
  • Status: Expired due to Fees
First Claim
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1. A method of determining a free point of a tubular string stuck in a wellbore, comprising acts of:

  • deploying a tool string in the stuck tubular string with a non-electric string, the tool string comprising a free point tool and an interface, the interface comprising a battery, a controller, and a memory unit;

    activating the free point tool by the controller, wherein the free point tool contacts an inner surface of the stuck tubular string;

    applying a tensile force and/or torque to the stuck tubular string;

    measuring a response of the tubular string with the free point tool;

    storing the free point measurement in the memory unit;

    retrieving the tool string to the surface;

    downloading the free point measurement from the memory unit; and

    determining the free point.

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