Valve for hydraulic fracturing through cement outside casing

  • US 8,267,178 B1
  • Filed: 09/01/2011
  • Issued: 09/18/2012
  • Est. Priority Date: 09/01/2011
  • Status: Active Grant
First Claim
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1. A valve comprising:

  • a housing having one or more openings,a mandrel having one or more openings positioned within the housing,a sliding sleeve disposed between the housing and the mandrel and blocking fluid communication between the openings in the housing and the openings in the mandrel when the valve is in the closed position and permitting fluid flow between the openings in the mandrel and the openings in the housing when the valve is in the open position; and

    one or more rupture disks disposed in a wall of the mandrel.

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