Method for determining a position of a water/cement boundary between pipes in a hydrocarbon well

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United States of America Patent

PATENT NO 9551212
APP PUB NO 20160017705A1
SERIAL NO

14773339

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Abstract

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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 (10) into a central pipe of the well, where the well tool (10) comprises a tool housing (11), a pulse generator (14) and a signal recorder (16) provided within the housing (11); 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 (16); 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.

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Patent Owner(s)

  • FMC KONGSBERG SUBSEA AS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adamian, Yuri Eduardovich Pos. Kuzmolovski Leningradskaya obl., RU 3 6
Belov, Andrey Aleksandrovich St. Petersburg, RU 3 6
Krivosheev, Sergey Ivanovich St. Petersburg, RU 4 13
Svechnikov, Evgeni Lvovich St. Petersburg, RU 3 6
Zhabko, Georgy Petrovich St. Petersburg, RU 3 6

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