SU1707183A1 - Fishing tool - Google Patents

Abstract

The invention relates to a fishing tool for removing tubular elements. The purpose of the invention is to increase the reliability of the catcher when extracting pipes of different diameters while simplifying its design. For this, on the outer surface in the upper part of the plates 4, inclined sections 6 are made. And on the pressure sleeve 7 there are conical sections 9 and 10 in the lower part, respectively, on the external and internal surfaces. In this case, the conical section 10 is made in response to the inclined section 6 of the upper part of the plates 4 for interacting with the plates 4 in the working position. To remove the emergency tool, the safety device is lowered into the well. The end of the emergency tool, entering the housing 1, passes through the plates 4 diluted by the spring 12, abuts against the locking elements 8 and leaves the windows 2 of the housing 1. Under the action of the spring 13 the pressure sleeve 7 moves down and, with its conical section 10, acts on the plates 4 , driving them, clamping an emergency tool around the entire circumference. 1 il. Yo

Description

The invention relates to a fishing tool and can be used to extract pipes, rods and other tools from wells.

The purpose of the invention is to increase the reliability of the catcher when removing pipes of different diameters while simplifying its design.

This goal is achieved by the fact that in the catcher, containing a hollow body with windows and a conical section on the inner surface, dies located in the cavity of the casing with inclined sections in the lower part on the outer surface, corresponding to the conical surface of the casing, located above the dies and axially spring loaded relative to housing push sleeve with locking elements located in the initial position in the windows of the housing, on the outer surface in the upper part of the rams are made inclined sections, on olive with sleeve conical portions formed on the bottom of the outer and inner surfaces, wherein the conical portion is formed on the inner surface of the mating portions of the inclined plates in the upper part for cooperation with the latter in the operative position.

The invention is illustrated in the drawing.

The catcher contains a hollow body 1 with OSH 2 and a conical section 3 on the inner surface. Inside the housing 1 there are dies 4 with inclined sections 5 in the lower part on the outer surface corresponding to the conical surface 3 of the housing 1, and with inclined sections b on the outer surface in the upper part of the dies 4. located above the dies 4 and spring-loaded in the axial direction relative to the housing a sleeve 7 with locking elements 8 in the form located in the initial position in the windows 2 of the housing 1 of the spring-loaded swing plates. On the push sleeve 7, conical sections 9 and 10 are made in the lower part on the outer and inner surfaces, while the conical section 10 on the inner surface is made reciprocal inclined sections b in the upper part of the dies for interaction with the latter in the working position.

In the dies 4, grooves 11 are made. In which a flat spring 12 is installed. The pressure sleeve 7 is spring-loaded with a cylindrical spring 13. And the locking elements 8 are spring-mounted 14 fixed on the axles 15.

The catcher works as follows.

The catcher is lowered on a pipe string into the well and placed on a dangling pipe string or rods. The end of the broken rods, entering the housing 1, passes through the diluted dies 4, rests on the straps of the locking element 8, rotates them around the axis and leads out of the windows 2 of the housing 1. Under the action of the spring 13, the pressure sleeve 7 moves downward, acting on the inclined section 10 section 6 at the upper end of the dies, reduces the dies 4, overcoming the force of the spring 12, and clamps up the broken rod.

As a result of the mutual action of the conical surfaces of the housing of the dies and the pressure sleeve, the teeth of the dies are embedded in the walls of the extracted rod, ensuring its uniform coverage over the entire surface and a reliable grip. Then the trap is lifted from the well and the recoverable object is released.

Compared with the known, the proposed solution increases the reliability of the catcher when removing pipes or rods of different diameters without changing the catcher to a different size, which reduces time and money and simplifies the design of the catcher.

Claims (1)

Claim Catcher, comprising a hollow body with windows and a conical section on the inner surface, located in the cavity of the die body with inclined sections in the lower part on the outer surface, reciprocal of the conical surface of the body, located above the dies and axially spring-loaded relative to the body, a pressure sleeve with spring-loaded locking elements installed in the initial position in the case windows, characterized in that, in order to increase the reliability of the catcher in operation when removing pipes of different diameters and at the same time simplifying its design, inclined sections are made on the outer surface in the upper part of the dies, conical sections are made on the pressure sleeve in the lower part on the outer and inner surfaces, while the conical section on the inner surface is made reciprocal inclined sections in the upper part of the dies for interaction with the latter in working position.