CN2603191Y

CN2603191Y - Fishing tool

Info

Publication number: CN2603191Y
Application number: CN 03239282
Authority: CN
Inventors: 陈建党; 李士锐; 李天聪; 周建新; 霍长江; 石军
Original assignee: No4 Oil Production Facotry Zhongyuan Petroleum And Gas Gaoxin Co Ltd Sinop
Current assignee: No4 Oil Production Facotry Zhongyuan Petroleum And Gas Gaoxin Co Ltd Sinop
Priority date: 2003-03-07
Filing date: 2003-03-07
Publication date: 2004-02-11
Anticipated expiration: 2013-03-07

Abstract

The utility model discloses a fishing tool which is particularly suitable for the hook of objects of rope in well. The utility model comprises a connector press plate which is provided with a step and a water hole and a main body which is provided with a hook that is fixed by hinge pin. A spring is installed between the other end of the hook and the main body which is provided with a groove. The lower part of the main body is a cone body and is wound by a spiral body. The utility model has the advantages of convenient hook, fast and high rate of success.

Description

A kind of fishing tool

The utility model relates to a kind of fishing tool, is specially adapted to the fishing of oil (gas) well down-hole rope class junk.

Oil (gas) well, makes cable can't or have little time to trip out ground and causes down-hole rope class junk because reasons such as sand face bit freezing are visited in the blowout of perforation process, perforating gun distortion or magnetic orientation through regular meeting in the underground work work progress.In salvaging construction operation, present selectable instrument is few, and the difficulty of salvaging is very big, and conventional fishing tool mainly is homemade outer hook or interior hook, fishing success ratio is lower, misoperation also has the danger of bit freezing, in addition because the scrambling of rope class junk, when fishing tool contact top of fish, load variations is little, ground is difficult for grasping, so it is agglomerating to be easy to extruded cable, makes the down-hole situation more complicated.

The purpose of this utility model just provides a kind of fishing tool, and it can solve the salvaging problem of rope class junk rapidly efficiently.

The purpose of this utility model is achieved in that fishing tool is made up of joint platen and body, the joint platen is threaded with body, the joint platen has a step and has the water hole, be fixed with hook by bearing pin on the body, be provided with spring between the other end of hook and the body, have groove on body, hook can shrink in the groove of body when reclaiming, the lower end of body is a cone, is tied with conveyor screw in the bottom of body.

The utility model utilizes conveyor screw and callable hook, is convenient on the one hand enter in the agglomerating rope class junk of extruding, rope class junk is wound on conveyor screw and the hook is difficult for slippage, has and salvages the advantage convenient, fast, that success rate is high.

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1: the utility model structural representation;

This instrument mainly is that as shown in Figure 1, fishing tool is made up of joint platen 1 and body 3 according to the principle concept design of fluted drill, joint platen 1 is threaded with body 3, joint platen 1 has a step and has water hole 2, and platen 1 stops on the rope class junk scurries, and can not cause bit freezing.Be fixed with hook 6 by bearing pin 5 on the body 3, be provided with spring 4 between the other end of hook 6 and the body 3, on the position of body 3, hook 6, have groove, when normal condition, hook 6 is under the effect of self gravitation and spring 4, and hook 6 is opened, when running into obstruction, hook 6 can bounce back in the groove of body 3, and the lower end of body 3 is a cone, is tied with conveyor screw 7 in the bottom of body 3.

During use fishing tool is connected on the tubing string lower end, when going into the well near top of fish, at first turn on pump circulation, current clean top of fish and well chamber by water hole 2 big discharge capacities, pressurization rotation then, slowly transfer, conveyor screw 7 at first enters inside, fish chamber, the hook 6 that is fixed in bearing pin 5 can rely in the groove that acts on body 3 of spring 4 and deadweight and freely rotate, form minimum salvaging size, the resistance when the minimizing instrument is gone into fish is along with constantly transferring of conveyor screw 7, hook 6 enters the fish chamber and resets, the top connection of top of fish contact simultaneously platen 1 is when finding that surface torque increases, when the pressure of the drill has obvious decline, can carry drilling tool in the termination of pumping, hook 6 and conveyor screw 7 are caught junk, realize successfully salvaging.

Claims

1, a kind of fishing tool is made up of joint platen (1) and body (3), joint platen (1) is threaded with body (3), it is characterized in that: joint platen (1) has a step and has water hole (2), body (3) is gone up and is fixed with hook (6) by bearing pin (5), be provided with spring (4) between the other end of hook (6) and the body (3), on body (3), have groove, hook (6) can shrink in the groove of body (3) when reclaiming, the lower end of body (3) is a cone, is tied with conveyor screw (7) in the bottom of body (3).