首页|Patent Issued for Pipe handling arm (USPTO 11891864)
Patent Issued for Pipe handling arm (USPTO 11891864)
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According to news reporting originating from Alexandria, Virginia, by NewsRx journalists, a patent by the inventors Donnally, Robert Benjamin (Houston, TX, US), Liu, Xi Lin (Shanghai, China), filed on December 11, 2019, was published online on February 6, 2024. The assignee for this patent, patent number 11891864, is National Oilwell Varco L.P. (Houston, Texas, United States). Reporters obtained the following quote from the background information supplied by the inventors: “The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventor, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure. “Many pipe handling operations, such as drill pipe handling operations, are conventionally performed with workers performing manual operations. For example, drilling of wells involves tripping of the drill string, during which drill pipes are lowered into (tripping in) or pulled out of (tripping out) a well. Tripping may typically occur in order to change all or a portion of the bottom hole assembly, such as to change a drill bit. Where drill pipe is tripped into a well, stands or lengths of drill pipe may be supplied from a storage position in a setback area of the drill rig and connected end-to-end to lengthen the drill string in the well. Where drill pipe is tripped out of a well, stands or lengths of drill pipe may be disconnected from the drill string and may be positioned in the setback area.
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