Abstract: Low density fibrous materials such as carbon fibers are readily added and dispersed into a liquid such as a fracturing fluid liquid by injecting the fibers into the liquid adjacent to the liquid-gas interface at the surface of the liquid. The fibrous materials are preferably compacted to a uniform bulk density in a container in which all the gas in the compacted fibers has been displaced by a liquid. A crimped cartridge having a piston to discharge the compacted fibrous material into the liquid is preferred.

Abstract: A high pressure foam slurry generator, including a source of slurry, a source of gas, and a means for combining the slurry and the gas, which is usually nitrogen. A housing receiving the slurry and the gas has a connector with multiple channels. One channel for the nitrogen gas acts as an inlet and has a bushing with a series of multiple holes through which the nitrogen gas is broken into a plurality of high velocity streams. The slurry with a foamer agent added combines at right angles with the nitrogen gas and is formed before being pumped through a tubing string into a gas or oil well. Also included herein is a process for making foamed slurry by pumping a slurry capable of being foamed to a housing, pumping nitrogen to the same housing, separating the nitrogen into a plurality of high velocity streams, and combining the streams and the slurry in a foaming action. Either the slurry or the nitrogen may have two separate streams entering the housing as right angles to each other.