SILICONE-PHENOLIC COMPOSITIONS, COATINGS AND PROPPANTS MADE THEREOF, METHODS OF MAKING AND USING SAID COMPOSITIONS, COATINGS AND PROPPANTS, METHODS OF FRACTURING

摘要

A silicone phenolic coating composition is useful for coating silica containing substrates to form products useful in hydraulic fracturing. The coating composition comprises self crosslinking phenolic prepolymers, with the silica in the sand being bridged to the silica in the coating composition by oxygen.

主权项

1. A proppant comprising:
a substrate containing silicon; and, a silane coating comprising a central silicon atom, a first L atom directly bonded to the central silicon atom to create an Si-L linkage, a prepolymer that is bonded directly the central silicon atom or bridged to the central silicon atom by a second L atom directly bonded to the central silicon atom to create an Si-L-prepolymer linkage; wherein silicon in the substrate is bonded directly to the first L atom to form an Si-L-Si linkage between the silicon in the substrate and the central silicon atom in the coating; and wherein L is selected from the group consisting of boron (B), nitrogen (N), oxygen (O), phosphorus (P) and sulphur (S).