CPC E21B 34/10 (2013.01) [E21B 43/12 (2013.01)] | 15 Claims |
1. An injection valve comprising:
a housing having a port;
an insert movably disposed in the housing and having an opening having a lead orifice, the opening and lead orifice extending from an outside surface of the insert to an inside surface of the insert;
a seal and a diffuser disposed on the insert and in contact with the housing, the seal and diffusers being movable with the insert in the housing wherein the insert is movable between a fully closed position, and a number of part open positions, and a fully open position.
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