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System for a downhole string with a downhole valve

  • US 8,365,820 B2
  • Filed: 10/29/2010
  • Issued: 02/05/2013
  • Est. Priority Date: 10/29/2010
  • Status: Expired due to Fees
First Claim
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1. A system for a downhole string, comprising;

  • a fluid path defined by a bore formed within a tubular component;

    a reciprocating valve located within a wall of the bore and which hydraulically connects the bore with a fluid passage;

    the valve comprising a housing comprising a substantially cylindrical shape wherein first and second ports are disposed on a circumference of the housing and a fluid pathway is disposed intermediate the first and second ports;

    the valve also comprising an axially slidable spool disposed within and coaxial with the housing and comprising a blocker;

    the blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage; and

    the valve also comprising a plurality of seals wherein each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals.

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