Tubing retrievable injection valve assembly

摘要

A method and apparatus for controlling the flow of fluid in an injection well includes a main valve assembly having a valve and a retrievable orifice selective lock assembly (ROSLA). The ROSLA is operable when positioned within the valve body to open the valve when fluid is pumped into the well and closes the valve when fluid flow is terminated. The ROSLA includes a replaceable orifice nozzle so that orifices of different dimensions may be used in conjunction with the valve assembly.