Invention Grant
- Patent Title: Washpipe assemblies for a power swivel
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Application No.: US15586509Application Date: 2017-05-04
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Publication No.: US10563770B2Publication Date: 2020-02-18
- Inventor: Christopher Brian Walker , Henry Do , Robert Ioan Papp , Mihail Puscas , Calvin Ronald Blankenship
- Applicant: National Oilwell Varco, L.P.
- Applicant Address: US TX Houston
- Assignee: National Oilwell Varco, L.P.
- Current Assignee: National Oilwell Varco, L.P.
- Current Assignee Address: US TX Houston
- Agency: Conley Rose, P.C.
- Main IPC: F16J15/3284
- IPC: F16J15/3284 ; E21B3/02 ; E21B21/02

Abstract:
A washpipe assembly for a power swivel and a power swivel incorporating the washpipe assembly. In an embodiment, the washpipe assembly includes a washpipe including a central axis and a radially outermost cylindrical surface. In addition, the washpipe assembly includes a first packing assembly configured to be coupled to a stem of the power swivel. The first packing assembly includes a seal assembly that includes one or more annular seal members each including a body and a contact insert mounted to the body, the contact insert engaging and forming a dynamic seal with the radially outermost cylindrical surface of the washpipe.
Public/Granted literature
- US20170321807A1 WASHPIPE ASSEMBLIES FOR A POWER SWIVEL Public/Granted day:2017-11-09
Information query
IPC分类: