Method of cementing a well using delayed hydratable polymeric viscosifying agents

US10822917B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• Andreas Brandl · Wien, AT
• Christina Magelky · Spring, US
• Angela Anh Doan · Houston, US
• Windal Scott Bray · Cypress, US

Key dates

• Filing date: Sep 17, 2013
• Grant date: Nov 3, 2020
• Expiry date: Sep 17, 2033

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/25
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The disclosure relates to a method of delaying viscosification of a well treatment fluid within a well or within a subterranean formation penetrated by a well by introducing into the well a hydratable viscosifying agent of particulates having a minimum of 40% retention on a 60 mesh screen and a minimum of 1% retention on a 20 mesh screen.