WO 2016/187242 A1

Method for analyzing cement integrity in casing strings ­using machine learning

(22) 18.05.2016

(43) 24.11.2016

(57) The present disclosure provides methods and systems for analyzing cement integrity in a depth interval of a wellbore having a multiple string casing with an innermost annulus disposed inside at least one outer annulus. The method includes processing ultrasonic data obtained from ultrasonic measurements on the interval of the wellbore to determine properties of the innermost annulus. The method also includes processing sonic data obtained from sonic measurements on the interval of the wellbore to extract features of the sonic data. The features of the sonic...

Find out more in the current Issue. Order now!

Related articles:

7-8/2015 EP 2 886 794 A1

Systems and methods for cement evaluation calibration

(22) 23.12.2013 (43) 24.06.2015 (57) Devices and methods for calibrating acoustic cement evaluation data using an acoustic calibration device installed behind a casing in a wellbore are provided. Such...

12/2018 WO 2018/174842 A1

Viscosity modifiers and methods of use thereof

(22) 20.03.2017 (43) 27.09.2018 (57) A method of cementing a wellbore comprises injecting into the wellbore a cement slurry comprising an aqueous carrier, a swellable nanoclay, and a solid delayed...

9/2016 US 2016/0200959 A1

Wellbore cement compositions and wellbore cementing methods

(22) 21.03.2016 (43) 14.07.2016 (57) A wellbore cement composition includes substantially unhy­drated cement powder and additive powder for cement. The additive powder is formulated from ingredients...

1-2/2019 US 2018/0298268 A1

Cement having cross-linked polymers

(22) 26.06.2018 (43) 18.10.2018 (57) A composition and method of forming a wellbore cement that includes a cross-linked polyamide. The polyamide is formed by reacting a di-functional amine with an...

5/2016 US 2016/0084037 A1

Cement blends including inert microparticles

(22) 20.09.2013 (43) 24.03.2016 (57) Dry cement blends that include inert microparticles may be used to produce cement slurries with a lower viscosity and a longer aging window. For example, a related...