METHODS AND SYSTEM FOR CREATING HIGH CONDUCTIVITY FRACTURES

摘要

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.

主权项

1. A re-healable proppant island comprising:
a first amount of a treated proppant, where the treated proppant comprises a proppant having a partial or complete coating of a zeta potential altering composition, and where the first amount is sufficient: (a) to allow formation of proppant islands in fractures formed in a formation or zone thereof during fracturing operations and to maintain the proppant islands substantially intact, if the proppant islands and/or particles within the proppant islands move within the formation during and/or after fracturing operations, or during injection operations, or during production operations, or (b) to allow formation of proppant islands in fractures formed in a formation or zone thereof during fracturing operations, to allow the proppant islands to re-heal or break apart and reform during and/or after fracturing operations, or during injection operations, or during production operations maintaining high fracture conductivity, and to capture formation fines during and/or after fracturing operations, or during injection operations, or during production operations.