Well proppant and method for recovering hydrocarbon from hydrocarbon-bearing formation

Abstract

To provide a well proppant containing fluororesin-coated particles which has a sufficiently small frictional resistance of the surface, which has sufficient chemical resistance and strength, which can be produced with high productivity, of which proppant particles as a base substrate are hardly corroded, and in which the adhesion between the coating fluororesin and the proppant particles as a base substrate is high, and a method for efficiently recovering hydrocarbons from a hydrocarbon-bearing formation. A well proppant containing fluororesin-coated particles having at least part of the surface of proppant particles coated with a fluororesin (F) having a volume flow rate of from 0.1 to 1000 mm3/sec, and a method for recovering hydrocarbons, which comprises a step of injecting a fluid containing the well proppant into a hydrocarbon-bearing formation 14 through a well 10 to support fractures 14a in the hydrocarbon-bearing formation 14, by the well proppant and a step of recovering hydrocarbons through the well 10 from the hydrocarbon-bearing formation 14 in which the fractures 14a are supported by the well proppant.

Dependencies are inferred from the claim text.