Invention Grant
- Patent Title: Pipe for control and forced circulation of corrosion-inhibiting fluids in the annulus thereof
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Application No.: US16618748Application Date: 2018-05-30
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Publication No.: US11204113B2Publication Date: 2021-12-21
- Inventor: Marcos Carpigiani De Almeida , George Carneiro Campello , Jonatas Ribeiro , Rafael Guimarães De Mello Sobreira , Walter Carrara Loureiro Junior , Marcelo Torres Piza Paes
- Applicant: PETRÓLEO BRASILEIRO S.A.-PETROBRAS
- Applicant Address: BR Rio de Janeiro
- Assignee: PETRÓLEO BRASILEIRO S.A.-PETROBRAS
- Current Assignee: PETRÓLEO BRASILEIRO S.A.-PETROBRAS
- Current Assignee Address: BR Rio de Janeiro
- Agency: Osha Bergman Watanabe & Burton LLP
- Priority: BR102017011386-8 20170530
- International Application: PCT/GB2018/051462 WO 20180530
- International Announcement: WO2018/220360 WO 20181206
- Main IPC: F16L11/08
- IPC: F16L11/08 ; F16L33/01 ; B29L23/00 ; E21B17/01 ; F16L58/00

Abstract:
A pipe is used for control and forced circulation of corrosion-inhibiting fluids in an annulus thereof, the annulus located between an inner pressure barrier and an outer cover of the pipe and containing a number of layers. The pipe includes two layers of tensile armor within the annulus; at least one injection pipe laid helicoidally on the longitudinal extension of the pipe; at least one return pipe laid helicoidally on the longitudinal extension of the pipe; and a ventilation layer within the annulus, the ventilation layer being configured to facilitate the flow of fluids longitudinally through the annulus of the pipe.
Public/Granted literature
- US20200166158A1 PIPE FOR CONTROL AND FORCED CIRCULATION OF CORROSION-INHIBITING FLUIDS IN THE ANNULUS THEREOF Public/Granted day:2020-05-28
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