Sealing and testing segmented tools

  • US 10,921,210 B2
  • Filed: 12/02/2016
  • Issued: 02/16/2021
  • Est. Priority Date: 05/31/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method of sealing between two segments of a mandrel, comprising:

  • arranging an inner seal, an outer seal, and a middle seal to form first and second seal chambers between the two mandrel segments, wherein the inner, outer and middle seals seal the mandrel segments together;

    applying a vacuum to each of the first and second seal chambers; and

    sensing a change in vacuum pressure within the first and second seal chambers.

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