| http://www.w3.org/ns/prov#value | - Another example of a method of the present invention is a method of cementing in a subterranean formation comprising a well bore, comprising: providing a pipe string comprising an activator on an outer surface of the pipe string; placing the pipe string into the well bore, whereby an annulus is defined between the outer surface of the pipe string and the walls of the well bore; flowing a cement co
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