Patent · US Active

Determining the location of a material located behind an obstruction

US9840905B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

STATOIL PETROLEUM AS · NO

Inventors

Gjermund Grimsbo · Trondheim, NO
Marcus Fathi · Trondheim, NO
Bjarne Bugten · Saksvik, NO

Key dates

Filing date	Jun 1, 2011
Grant date	Dec 12, 2017
Priority date	—
Expiry date	Apr 11, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01H1/06
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A method and apparatus for determining the location of a material located behind an obstruction. A plurality of acoustic resonators (6) having a known resonant frequency are dispersed in the material (3), the material to be located on a first side of the obstruction (2). An instrument (5) is provided at an opposite side of the obstruction to the material. The instrument emits an acoustic signal and measures a response. If the resonant frequency is detected, it is determined that the material is located substantially adjacent to the instrument. The apparatus may be used for determining the height of cement slurry located between a well casing wall and a borehole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.