Lightweight flexible riser pipe can be installed straight down a well bore in one step, reducing installation time by half. If pre-coiled before shipping, the pipe retains no kinks after unrolling. The outer diameter of the valve assembly can be larger than the inner diameter of the riser pipe, so the flow of slurry liquids is enhanced by greater pump volumes and velocities. No couplings or barbed fittings are needed, as there are no multiple hard-pipe sections to attach together, and the pipe motor sits directly above the wellhead for easy access.
Blackhawk Technology Co., Glen Ellyn, Ill.
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