Choke valve with internal sleeve for erosion protection

A method comprising:

• receiving, from an upstream flow line, fluids at an inlet body of a choke valve assembly, the inlet body fluidically coupled to an outlet body of the choke valve assembly, the outlet body configured to flow the fluids to a downstream flow line;
• forming, by a sleeve positioned in and attached to a choke valve body positioned between the inlet body and the outlet body, an inner region internal to the sleeve and an outer region external to the sleeve and internal to the choke valve body, the choke valve body comprising a choke valve configured to be open or closed to control flow of the fluids from the inlet body to the outlet body;
• and
• flowing, by the sleeve and in response to the choke valve being open, the fluids received at the inlet body through the inner region instead of through the outer region and to the outlet body.

A hydrocarbon flow line assembly comprising:

• an upstream flow line configured to flow well fluids comprising hydrocarbons extracted from a hydrocarbon reservoir in a subterranean zone;
• a choke valve assembly downstream of the upstream flow line, the choke valve assembly fluidically coupled to an outlet of the upstream flow line to receive the well fluids from the upstream flow line, the choke valve assembly comprising a sleeve positioned in and attached to an inner region of the choke valve assembly, the sleeve defining an inner sleeve region internal to the sleeve and an outer sleeve region external to the sleeve and internal to the inner region of the choke valve assembly, the sleeve configured to flow the fluids from the inlet body through the inner sleeve region instead of the outer sleeve region;
• and
• a downstream flow line downstream of the choke valve assembly and configured to receive the well fluids from an outlet of the choke valve assembly.