The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2019
Filed:
Oct. 26, 2016
Schlumberger Technology Corporation, Sugar Land, TX (US);
Hiroshi Hori, Sagamira, JP;
Yoshino Matsumoto, Kawasaki, JP;
Kojiro Nishimiya, Yokohama, JP;
Kiyomitsu Hikida, Yokohama, JP;
Jean-Christophe Auchere, Sagamihara, JP;
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
A downhole tool for real-time caliper measurements is provided. The downhole tool comprises multiple acoustic transducers mounted at different positions of the tool, and a control system. The control system drives the multiple transducers, receives pressure echo signals from the transducers, records the pressure echo signals in the memory, extracts data of two-way transit time and echo amplitude from the echo signals, and computes at least one of a borehole diameter, a tool center position, and an acoustic slowness or velocity of downhole fluid, based on the data of transit time and echo amplitude.