发明名称 Metal-to-metal sealable port
摘要 A ported fluid flow member has been developed in which one or more ports each is lined with a metal tube which has a portion projecting into the body member. The projecting portion may be crushed shut forming a metal-to-metal seal to seal off the corresponding port to flow. Methods have been invented for using the items with one or more of the lined ports.
申请公布号 US5464062(A) 申请公布日期 1995.11.07
申请号 US19940321557 申请日期 1994.10.12
申请人 WEATHERFORD U.S., INC. 发明人 BLIZZARD, JR., WILLIAM A.
分类号 E21B33/127;E21B33/14;E21B34/06;E21B34/14;(IPC1-7):E21B29/00 主分类号 E21B33/127
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