Tubing isolation disc valve

专利名称：Tubing isolation disc valve发明人：James M. Upchurch申请号：US06/756891申请日：19850719公开号：US04609005A公开日：19860902

摘要：In the representative embodiment of the invention disclosed herein, a disc valveis cooperatively arranged to include a disc member of a ductile material which is

transversely positioned within an enlarged chamber in the axial bore of a tubular housingand sealingly secured to the housing. A piston-actuated tubular mandrel having aforward position defining a slanted annular cutting edge with a notch on one side thereofis arranged in the housing so that as the mandrel is advanced against the disc, the inclinedcutting edge will progressively sever the central portion of the disc from its peripheralportion and progressively bend that part of the central disc portion disposed in thenotch outwardly to confine the central disc portion between the housing wall and theexterior of the mandrel.

申请人：SCHLUMBERGER TECHNOLOGY CORPORATION

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