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公开(公告)号:US4759410A
公开(公告)日:1988-07-26
申请号:US904523
申请日:1986-09-05
IPC分类号: E21B23/03
CPC分类号: E21B23/03 , Y10T29/49938
摘要: A side pocket mandrel for use in well tubing. The mandrel has a body, having an open bore extending through the body in alignment with the well tubing, and a side pocket offset from the bore. A valve receptacle is formed in the side pocket of the mandrel. The body of the mandrel has a plurality of forged indentations. These indentations are axially spaced above the valve receptacle and extend into the side pocket for a distance sufficient to keep well tools from entering the valve receptacle. The indentations may also taper away from the valve receptacle.
摘要翻译: 用于井筒管的侧口心轴。 心轴具有主体,其具有延伸穿过主体的开口孔,与孔管对准,以及从孔偏移的侧袋。 在心轴的侧袋中形成阀容器。 心轴的主体具有多个锻造压痕。 这些压痕在阀座上方轴向间隔开并延伸到侧袋中足以保持良好的工具不进入阀座的距离。 压痕也可以从阀座逐渐变细。