People seem to overestimate a dinosaur's ability to kill everything. A park could easily be set up(provided a suitable climate is maintained)with good security. besides if you really wanted to keep a trex in an enclosure you wouldn't make it out of wire. you would have a large trench separating the fence to start with, T Rex would never even make it close. Problem of security solved 
You could do the same with the raptors, set a a trench to make the fences unreachable.
PS. i put way too much thought into this
You could do the same with the raptors, set a a trench to make the fences unreachable.
PS. i put way too much thought into this