What is Fishing Tools in Drilling Operation

Fishing (in drilling operations) means the recycle of the unnecessary equipment or material left or lost downhole. If certain item dropped into the well, the special mechanism fishing is required.  Usually, there are four different types of fishing tools: diagnostic (e.g., the impression block), inside grappling (e.g., Saigao NG type internal fishing grab), outside grappling (e.g., Saigao WG type external fishing grab), and force intensifiers or jars (e.g., Saigao hydraulic jar intensifier). Different types of fishing tools in during have special traits to handle different situation. For example, the inside grappling device is also referred to as the spear. It is usually presented in a tapered and threaded profile, which allows the fisherman to locate the device into the top of the “fish” and then makes an recovery attempt.

It takes few days to conduct the fishing operation, and during fishing, the drilling operation isn't able to be taken. Fishing is a significant step in the drilling, and that is why choosing the right and good fishing tools matters.