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:
Jan. 24, 2017
Filed:
Mar. 15, 2013
Fmc Kongsberg Subsea As, Kongsberg, NO;
Sergey Ivanovich Krivosheev, St. Petersburg, RU;
Evgeni Lvovich Svechnikov, St. Petersburg, RU;
Georgy Petrovich Zhabko, St. Petersburg, RU;
Andrey Aleksandrovich Belov, St. Petersburg, RU;
Yuri Eduardovich Adamian, Pos. Kuzmolovski Leningradskaya obl., RU;
FMC Kongsberg Subsea AS, Kongsberg, NO;
Abstract
A method has been disclosed for determining a position of a water/cement boundary in an annular area between two concentric pipes in a hydrocarbon well. The method comprises the steps of running a well tool () into a central pipe of the well, where the well tool () comprises a tool housing (), a pulse generator () and a signal recorder () provided within the housing (); generating an electromagnetic pulse by means of the pulse generator, thereby providing physical vibrations in the central pipe of the well; recording reflected acoustic signals from the well by means of the signal recorder (); repeating the generating and recording steps for different vertical positions of the pulse generator in the well; organizing the recorded signals in a two-dimensional representation; filtering the organized recorded signals in order to identify, in the two-dimensional representation, a hyperbola (B); and providing an apex of the hyperbola (B) as the determined position of the water/cement boundary.