Abstract: A cement plug is for plugging an annular region between a first casing and a second casing in a well. A method includes: perforating the first casing to open a flow path to the annular region; providing a magnetorheological cementitious slurry; inducing a magnetic field for affecting the physical properties of the magnetorheological cementitious slurry and for defining a lower boundary for the cement plug; feeding the magnetorheological cementitious slurry into the annular region through a perforation in the first casing; and impeding the mobility of the magnetorheological cementitious slurry in the annular region by exposing it to the magnetic field such that the magnetorheological cementitious slurry may consolidate substantially at the lower boundary without the need for a base device in the annular region.
Type:
Grant
Filed:
February 8, 2018
Date of Patent:
May 24, 2022
Assignee:
Well-Set P&A AS
Inventors:
Craig Usher, Nader Behjat, Grant Knight
Abstract: A system is for pressure testing a barrier in a well from below. The system has a first barrier, a second barrier located below the first barrier in the wellbore, a confined testing space located between said first and second barriers in the well, and a fluid reservoir. The system further has a pressurizing member for pressurizing fluid from said fluid reservoir and for transferring said pressurized fluid into said confined testing space, a pressure sensor for measuring pressure in relation to said confined space; and a pressure data receiver for receiving data from said pressure sensor. There is also described a method for pressure testing a barrier in a well from below.
Type:
Grant
Filed:
December 6, 2017
Date of Patent:
May 4, 2021
Assignee:
Well-Set P&A AS
Inventors:
Nader Behjat, Grant Knight, Craig Usher
Abstract: A system is for pressure testing a barrier in a well from below. The system has a first barrier, a second barrier located below the first barrier in the wellbore, a confined testing space located between said first and second barriers in the well, and a fluid reservoir. The system further has a pressurizing member for pressurizing fluid from said fluid reservoir and for transferring said pressurized fluid into said confined testing space, a pressure sensor for measuring pressure in relation to said confined space; and a pressure data receiver for receiving data from said pressure sensor. There is also described a method for pressure testing a barrier in a well from below.
Type:
Application
Filed:
December 6, 2017
Publication date:
March 12, 2020
Applicant:
Well-Set P&A AS
Inventors:
Nader Behjat, Grant Knight, Craig Usher
Abstract: A cement plug is for plugging an annular region between a first casing and a second casing in a well. A method includes: perforating the first casing to open a flow path to the annular region; providing a magnetorheological cementitious slurry; inducing a magnetic field for affecting the physical properties of the magnetorheological cementitious slurry and for defining a lower boundary for the cement plug; feeding the magnetorheological cementitious slurry into the annular region through a perforation in the first casing; and impeding the mobility of the magnetorheological cementitious slurry in the annular region by exposing it to the magnetic field such that the magnetorheological cementitious slurry may consolidate substantially at the lower boundary without the need for a base device in the annular region.
Type:
Application
Filed:
February 8, 2018
Publication date:
January 30, 2020
Applicant:
Well-Set P&A AS
Inventors:
Craig Usher, Nader Behjat, Grant Knight