专利名称：Pad-type plunger
发明人：Schuyler Kuykendall,James Allen Jefferies申请号：US14854186申请日：20150915公开号：US09932805B2公开日：20180403
专利附图：
摘要：A downhole tool, e.g., a plunger, and a method for manufacturing a plunger.The downhole tool includes a mandrel including a flow-restriction recess, and a pluralityof sealing pads configured to be disposed around the mandrel, biased radially-outwardtherefrom, and interlocked with one another. Each of the plurality of sealing pads
includes a flow-restriction tab having an axial thickness that varies as proceeding
circumferentially around the mandrel. The flow-restriction tab of each of the plurality ofsealing pads is configured to be disposed in the flow-restriction recess when the pluralityof sealing pads are disposed on the mandrel.
申请人：EPIC LIFT SYSTEMS LLC
地址：Fort Worth TX US
国籍：US
代理机构：MH2 Technology Law Group, LLP
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