Patent ID: 9168565
Filing Date: 2015-10-27
Classification: B05D,B82Y,C09K,E21B

Abstract:
1. A method of reducing the amount of dust generated from a well treatment particulate during transport of the well treatment particulate or during pumping of the well treatment particulate into a well, the surface of the well treatment particulate having a positive or negative charge, the method comprising: (a) forming onto at least a portion of the surface of the well treatment particulate at least two adjacent polyelectrolyte layers wherein the first polyelectrolyte layer adjacent to the surface of the well treatment particulate comprises a polyionic material and has a charge opposite to the charge of the surface of the well treatment particulate and further wherein the second polyelectrolyte layer adjacent to the first polyelectrolyte layer comprises a polyionic material having a charge opposite to the charge of the surface of the first polyelectrolyte layer; and (b) transporting the well treatment particulate or pumping into the well the well treatment particulate having a coating of the least two adjacent polyelectrolyte layers wherein the amount of dust generated during transport or pumping of the well treatment particulate containing the coating of the least two adjacent polyelectrolyte layers is less than the amount of dust generated during transport or pumping of the well treatment particulate not containing the coating of the least two adjacent polyelectrolyte layers.