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1. (WO2018222700) ACOUSTIC COUPLER FOR DOWNHOLE LOGGING WHILE DRILLING APPLICATIONS

Pub. No.:    WO/2018/222700    International Application No.:    PCT/US2018/035110
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 31 01:59:59 CEST 2018
IPC: E21B 47/022
G01V 1/46
Applicants: SAUDI ARABIAN OIL COMPANY
ARAMCO SERVICES COMPANY
Inventors: MARSALA, Alberto, F.
Title: ACOUSTIC COUPLER FOR DOWNHOLE LOGGING WHILE DRILLING APPLICATIONS
Abstract:
A deviated or horizontal wellbore is drilled in a geologic formation with a multiphase fluid including a gas by a rotating drill bit positioned at a downhole end of a drill string. Portions of the gas are released into the wellbore during the drilling. During the drilling, soundwaves are emitted into the geologic formation from within the wellbore by a set of acoustic emitters 208 attached to the drill string. The received reflected soundwaves are transmitted by the set of solid acoustic couplers 202 to a set of acoustic sensors 206 contacting the solid acoustic couplers 202. The reflected soundwaves are received by the acoustic sensors 206.