Jetting apparatus for fracturing applications

A downhole hydra-jetting apparatus has a substantially cylindrical guide housing having an outer surface and an inner surface, and defining a cavity longitudinally extending through the guide housing; a plurality of retractable guide members attached radially around the guide housing; and a substantially cylindrical jet housing having an outer surface and an inner surface, and defining a cavity longitudinally extending through the jet housing, with a plurality of jetting nozzles defined in, and radially positioned about, the jet housing. Each of the plurality of jetting nozzles are adjustable relative to the guide housing to allow substantial alignment of projections from the plurality of jetting nozzles and the plurality of guide members when the guide members are extended radially from the outer surface of the guide housing and the apparatus is actively moved through a downhole.