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Electronically-Actuated Cementing Port Collar

  • US 20150027706A1
  • Filed: 07/26/2013
  • Published: 01/29/2015
  • Est. Priority Date: 07/26/2013
  • Status: Active Grant
First Claim
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1. A port collar for use on casing in a borehole, the port collar comprising:

  • a housing disposed on the casing and having an internal bore, the housing having at least one exit port communicating the internal bore with the borehole;

    an opening valve disposed on the housing and being biased from a closed position to an opened position relative to the at least one exit port;

    a first restraint temporarily holding the opening valve in the closed position, the first restraint electronically activated with a first trigger and releasing the opening valve biased to the opened position when activated;

    a closing valve disposed on the housing and being biased from an opened position to a closed position relative to the at least one exit port; and

    a second restraint temporarily holding the closing valve in the opened position, the second restraint electronically activated with a second trigger and releasing the closing valve biased to the closed position when activated.

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