公开(公告)号：US10138705B2

公开(公告)日：2018-11-27

申请号：US15037238

申请日：2014-11-18

Applicant: SHELL OIL COMPANY

Inventor： James George Oag ,  Rae Andrew Younger ,  Simon McKay

IPC: E21B34/06 ,  E21B29/02 ,  E21B29/08 ,  F16K7/07 ,  E21B43/12 ,  F16K17/40

Abstract: A flow restriction device for restricting flow through a conduit.

公开(公告)号：US09932792B2

公开(公告)日：2018-04-03

申请号：US15037247

申请日：2014-11-18

Applicant: SHELL OIL COMPANY

Inventor： Rae Andrew Younger ,  Simon McKay ,  James George Oag

IPC: E21B29/02 ,  E21B29/12 ,  E21B17/10 ,  E21B43/117 ,  E21B43/1185

CPC classification number: E21B29/02 ,  E21B17/10 ,  E21B43/117 ,  E21B43/1185

Abstract: A severance tool for severing a target is described. The severance tool comprises a housing, a plurality of focused energetics, each focused energetic adapted to release energy in a preferred direction and a trigger mechanism adapted to detonate the focused energetics. The focused energetics are aligned such that, on impact with a target comprising a material, the energy released by one of said focused energetics cooperates with the energy released by another of said focused energetics to establish a separating force within the target material.