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1. (WO2018081137) FLOW THROUGH TREATMENT STRING FOR ONE TRIP MULTILATERAL TREATMENT

Pub. No.:    WO/2018/081137    International Application No.:    PCT/US2017/058106
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Oct 25 01:59:59 CEST 2017
IPC: E21B 41/00
E21B 43/17
E21B 17/00
Applicants: BAKER HUGHES, a GE company, LLC
Inventors: PENDLETON, Bryan, P.
SHEEHAN, Joseph, E.
VU, John
MARTIN, Shannon
MOSLEY, Deshuttaney
KNEBEL, Mark, J.
Title: FLOW THROUGH TREATMENT STRING FOR ONE TRIP MULTILATERAL TREATMENT
Abstract:
An adjustable tubular string nose uses axially relatively movable wedge segments to form a variable diameter ring shape using technology described in US 7128146 in another context. The nose has a seat around a passage therethrough. After insertion of the nose into a first bore, typically a main bore, the nose is retracted out of the main bore and pressure against a seated bore in the nose expands the nose radially to a degree where re-entry into the main bore is precluded but entry into a lateral bore is still possible. The string advances onto a lateral no-go. This signals surface personnel to pick up and raise pressure to blow the seated ball through the seat to again open the passage in the nose. A seal stack behind the nose in advanced into a lateral seal bore and the treatment can then commence.