Claw-clamping Type Fishing Bit and Fishing Process

In view of the problems that tap fishing is not easy to make buckles, and sleeve milling fishing in the fishing of deep hole, complex track hole and down hole cannot stick the broken drill pipe in the hole, etc., two kinds of claw-clamping type fishing bits are designed. In this paper, the structure and characteristics of claw-clamping type fishing bit are introduced, claw-clamping type fishing process is described in detail, and the conditions of the claw-clamping type fishing bit to clamp the drill pipe are given.