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公开(公告)号：US20180038172A1
公开(公告)日：2018-02-08
申请号：US15670327
申请日：2017-08-07
CPC分类号： E21B17/1078 , E21B17/1042 , E21B23/02
摘要： The invention provides a centralizer for use with downhole operations. The centralizer is formed of a hollow, cylindrical body having an exposed outer surface and formed of a non-metallic material, a plurality of non-metallic blades protruding from the outer surface of the cylindrical body, and a plurality of wear buttons positioned on each of the plurality of blades, each of the wear buttons having a surface designed to reduce grabbing or sticking and wear of the hollow cylindrical body, such as a smooth, oval surface.
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公开(公告)号：US10669789B2
公开(公告)日：2020-06-02
申请号：US16448832
申请日：2019-06-21
IPC分类号： E21B17/10
摘要： A non-metallic centralizer for use with downhole operations. The centralizer is formed of a hollow, cylindrical body, a plurality of non-metallic blades protruding from the outer surface of the cylindrical body, and a plurality of wear buttons positioned on each of the plurality of blades, each of the wear buttons having a surface designed to reduce grabbing or sticking and wear of the hollow cylindrical body.
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公开(公告)号：US20190338602A1
公开(公告)日：2019-11-07
申请号：US16448832
申请日：2019-06-21
IPC分类号： E21B17/10
摘要： A non-metallic centralizer for use with downhole operations. The centralizer is formed of a hollow, cylindrical body, a plurality of non-metallic blades protruding from the outer surface of the cylindrical body, and a plurality of wear buttons positioned on each of the plurality of blades, each of the wear buttons having a surface designed to reduce grabbing or sticking and wear of the hollow cylindrical body.
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