专利检索 ap:("PETRÓLEO BRASILEIRO S.A.—PETROBRAS") AND inv:"Jose Soares de Miranda Junior" 第 1 页

1.

发明授权
Auxiliary device for lowering a tool into a well 有权

公开(公告)号：US11408238B2

公开(公告)日：2022-08-09

申请号：US16639304

申请日：2018-08-14

申请人： PETRÓLEO BRASILEIRO S.A.—PETROBRAS

发明人： Jose Soares de Miranda Junior , Orman Salvador Toscano , Paulo Cesar Cardoso Ferreira , Humberto de Oliveira Reis

IPC分类号： E21B23/14 , E21B33/072 , E21B33/076

摘要： The present invention relates to an auxiliary device for lowering at least one tool into a well, the auxiliary device comprising a main body configured to at least partially envelope an upper portion of the tool, wherein the main body comprises: a bottom opening configured to allow passage of the tool; and a top opening configured to block passage of the tool and allow passage of the cable supporting the tool.