Methods and system for creating high conductivity fractures

US9945220B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Rajesh Kumar Saini · Duncan, US
• Clayton S. Smith · Houston, US
• Mathew M. Samuel · Katy, US
• Kern L. Smith · Houston, US
• Chih-Chau Hwang · Houston, US
• Leonid Vigderman · Houston, US
• Duane S. Treybig · Sugar Land, US
• Pratyush Singh · Dhahran, SA

Key dates

• Filing date: Nov 18, 2014
• Grant date: Apr 17, 2018
• Expiry date: Nov 18, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2208/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Methods for forming proppant pillars in a formation during formation fracturing include include periods of pumping a first fracturing fluid including a proppant and an aggregating composition including a reaction product of a phosphate compound or a plurality of phosphate and an amine, periods of pumping a second fracturing fluid excluding a proppant and an aggregating composition including a reaction product of a phosphate compound and periods of pumping a third fracturing fluid including an aggregating composition including a reaction product of a phosphate compound, where the pumping of the three fracturing fluids may be in any order and may involve continuous pumping, pulse pumping, or non-continuous pumping.