What special considerations are involved in high-angle deviated and horizontal holes?
Successful fishing is much easier in a relatively straight well than in a highly deviated wellbore. However, it is still quite possible to perform a successful fishing job in a highly deviated or horizontal wellbore if the proper approach is taken. When a highly deviated well does require a fishing job, most of the tools used in straight hole fishing can be successfully run. Even washpipe with specialized connections can be run in highly deviated wells. Because the pipe is still large and not very flexible, sections still have to be short in order to pass through high-angle doglegs. Jars, overshots, magnets and junk baskets can also be used successfully.