Fishing tool
2023-03-22
Fishing tool
Fishing tools are required in complex situations such as sticking and falling objects encountered during drilling.
Fishing tools are required in complex situations such as sticking and falling objects encountered during drilling.
Slip overshot
- Purpose
Slip overshot is a tool for fishing downhole drill pipes, drill collars, tubing, and other smooth outer diameter fish.
- Structure
There are two types of slip overshots: basket type (composed of upper joint, body, basket shaped slip, control ring, milling shoe, and guide shoe).
Screw (composed of upper street, body, A-type sealing box, screw slip, finger control ring, and guide shoe).
Screw (composed of upper street, body, A-type sealing box, screw slip, finger control ring, and guide shoe).
Retractable slip spear
- Purpose
The retractable slip spear is a tool for fishing through the hole in the fish cavity. It can not only catch the pipe string in free state, but also catch the pipe string in case of jamming. It can also meet different operation requirements with safety joints The combination of upper knocker, accelerator, internal cutter, etc. is used. Its advantage is that it can exit the fishing tool when catching a falling object and cannot be pulled out, but its disadvantage is that it cannot be inverted.
- Structure
The retractable slip spear consists of an upper joint, a mandrel, a round slip, a release ring, and a guide shoe.
Male cone
- Purpose
The male cone is a tool for fishing tubular objects. It is used to make a buckle after entering the inside of the fish eye to fish the fish. Suitable for fishing pipe strings with thick pipe walls, such as joints, drill pipe thickening, drill collars, etc.
- Structure
The male cone is a cone with a water hole in the middle, and the upper part is connected to the drilling tool by a coarse thread. The surface of the cone is carburized and hardened, and the fishing thread has a high hardness.
Female cone
- Purpose
The female cone is a tool for fishing from the outside of a fish. It is mainly used for fishing the body of drill pipe, generally for fish with regular outer diameter and thin pipe diameter.
- Structure
The female cone is a cylinder with a water hole in the middle, with a thick buckle at the upper part connected to the drilling tool, and a bell mouth at the lower part. Inside the water hole, there are fishing threads with high hardness that have been surface carburized and quenched.
