Patent · US Active

Detection of a barrier behind a wellbore casing

US11788403B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

Baker Hughes Oilfield Operations LLC · US

Inventors

Andrew Hawthorn · Missouri City, US
Knut Inge Dahlberg · Blomsterdalen, NO

Key dates

Filing date	Aug 12, 2020
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Apr 12, 2041

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B33/12
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The detection of a barrier behind a wellbore casing involves the injection of a fluid into the wellbore casing or the pumping of a fluid from the wellbore casing, and the monitoring in real-time of the fluid properties in two downhole fluid volumes separated by a packer. A detection system utilizes a pipe string equipped with a telemetry that is capable of transmitting fluid property data to a surface monitor while the pipe string remains in the wellbore casing, and preferably while the packer remains set against the wellbore casing.

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