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1. (WO2018045187) CORE CATCHER

Pub. No.:    WO/2018/045187    International Application No.:    PCT/US2017/049643
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Sep 01 01:59:59 CEST 2017
IPC: E21B 49/06
E21B 10/02
Applicants: BAKER HUGHES, A GE COMPANY, LLC
Inventors: HETZ, Avigdor
CERNOSEK, James
Title: CORE CATCHER
Abstract:
A rotary coring bit for use in rotary sidewall coring in a wellbore, the coring bit comprising: a rotary coring bit body forming a core chamber within; and a core catching torsion spring disposed within the core chamber, the core catching torsion spring being moveable between a radially expanded position and a radially contracted position which is capable of gripping a core sample within the core chamber.