US 11,480,051 B2 · Apply multi-physics principle for well integrity evaluation in a multi-string configuration

Abstract

The disclosure provides a well integrity monitoring tool for a wellbore, a method, using a nuclear tool and an EM tool, for well integrity monitoring of a wellbore having a multi-pipe configuration, and a well integrity monitoring system. In one example, the method includes: operating a nuclear tool in the wellbore to make a nuclear measurement at a depth of the wellbore, operating an EM tool in the wellbore to make an EM measurement at the depth of the wellbore, determining a plurality of piping properties of the multi-pipe configuration at the depth employing the EM measurement, determining, employing the piping properties, a processed nuclear measurement from the nuclear measurement, and employing the processed nuclear measurement to determine an integrity of a well material at the depth and within an annulus defined by the multi-pipe configuration.

Claims25

Dependent claims

A method, using a nuclear tool and an electromagnetic (EM) tool, for well integrity monitoring of a wellbore having a multi-pipe configuration, the method comprising:

operating the nuclear tool in the wellbore to make a nuclear measurement at a depth of the wellbore;
operating the EM tool in the wellbore to make an EM measurement at the depth of the wellbore;
determining a plurality of piping properties of the multi-pipe configuration at the depth employing the EM measurement;
determining, by employing the piping properties, a representation of a relationship between EM measurements, nuclear measurements, and a well material for the multi-pipe configuration;
and
employing the EM measurement and the nuclear measurement with the representation to determine an integrity of the well material at the depth and within an annulus defined by the multi-pipe configuration, wherein the nuclear measurement is directed to density information of the well material and the EM measurement is directed to piping properties of the multi-pipe configuration.

3 more elements

A well integrity monitoring system, comprising:

a well integrity monitoring tool for a wellbore, including:
an electromagnetic (EM) EM tool configured to obtain EM measurements at depths of a wellbore having a multi-pipe configuration, wherein the EM measurements correspond to piping properties of metal pipes of the multi-pipe configuration, and
a nuclear tool configured to obtain nuclear measurements at the depths of the wellbore, and
an integrity computing device including:
an interface configured to receive the EM measurements and the nuclear measurements, and
a processor configured to employ both the EM measurements and the nuclear measurements to determine an integrity of a well material at one of the depths and within an annulus defined by the multi-pipe configuration based on a representation, determined according to the piping properties, of a relationship between the EM measurements, the nuclear measurements, and the well material, wherein the nuclear measurements are directed to density information of the well material.

3 more elements

Dependencies are inferred from the claim text.

Apply multi-physics principle for well integrity evaluation in a multi-string configuration

Life of this patent

Apply multi-physics principle for well integrity evaluation in a multi-string configuration

Life of this patent

Abstract

Claims25