发明名称 Abrasive resistant choke
摘要 An abrasive resistant choke assembly. It is especially for use in withstanding the abrasive action of sharp particles of silt and sand that are carried by hot fluids flowing under pressure from producing wells. It includes a choke passage with an inlet end that has an angle of taper of less than 8 DEG .
申请公布号 US4105049(A) 申请公布日期 1978.08.08
申请号 US19760750788 申请日期 1976.12.15
申请人 TEXACO EXPLORATION CANADA LTD. 发明人 ANDERSON, CLARENCE E.
分类号 E21B34/02;E21B43/12;F17D1/02;(IPC1-7):F15D1/02 主分类号 E21B34/02
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