Do you have a customlog format? Or do you need to live with what is there? if you have a format, you can easily distinguish between fields (for example, with tabs) and import it quite trivially.
LogFormat "%{%Y-%m-%d %H:%M:%S}t\t%s\t%h\t%{ClientIP}i\t%U%q\t%{Host}i\t%B\tc1w1402@dc1app14\t%m\t%{User-Agent}i\t%{Referer}i\tDRH\t%T\t%f\t%{Via}i" ezimport
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