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1. (WO2018089489) CONCENTRIC PIPE SYSTEMS AND METHODS

Pub. No.:    WO/2018/089489    International Application No.:    PCT/US2017/060635
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Nov 09 00:59:59 CET 2017
IPC: E21B 17/18
E21B 17/20
Applicants: DEBOER, Luc
Inventors: DEBOER, Luc
Title: CONCENTRIC PIPE SYSTEMS AND METHODS
Abstract:
A tubular assembly for a well system includes a drill pipe joint including a first pair of couplers disposed at ends thereof and a central passage, a flow sub configured to couple with the drill pipe joint, wherein the flow sub includes a second pair of couplers disposed at each end thereof and a first receptacle disposed therein, a first inner tubular member configured to be suspended from the first receptacle of the flow sub, wherein the first inner tubular member extends through the passage of the drill pipe joint forming an annulus therein when the drill pipe joint is coupled to the flow sub and the first inner tubular member is suspended from the first receptacle of the flow sub.