How Do Fishing Tools Work During Drilling

There is no doubt that people will come across a host of problems during the drilling process. The drill string or drilling bit may break or drop into the hole while the pipe and other devices or tools may fall from the rig floor into the borehole. All of the pieces fallen into the oil well are called “fish” or “junk”, through which the common drilling bits cannot drill. Under this circumstance, certain types of fishing tools are employed. Each fishing tool is designed to deal with specific situation, that is, to perform a specific fishing task or recycle certain type of fish. In most cases, the fishing tools are screwed into the end of fishing string and lowered to the bottom of the well with the fisherman guided to the top of the fish.

If the professional fisherman cannot decide which type of borehole fishing tool should be employed to fish, an impression block is used to acquire the impression of the fish. After that, the professional will know what kind of fish he/she is handling with.