SU1245685A1 - Internally released pipe-fishing tool - Google Patents

Description

2. Trubolov.ka according to claim 1

1245685

, about t - wadded, that are quiet.

The invention relates to a drilling rig, namely to a drilling tool for extracting; and upsetting pipes, and also for liquidation. Atsii accidents in drilling wells. . five

The purpose of the invention is to increase the reliability of the operation of the die by facilitating the release of the gripping; sectors and simplified design.

FIG. 1 depicts the proposed 0 trap in FIG. 2 shows section A-A in FIG. one.

The nozzle contains a hydraulic hammer with housing 1, in which the inner 2 and outer 3 are located 5– 5 th strikers with springs 4 and 5. The outer hammer 3 of the hydraulic hammer interacts with the pusher 6, which is made split with the inner 7 and outer 8 cones .. 20

In the anvil 9 of the hydraulic hammer, rigidly connected to the housing 1, rotary sectors 10 with a spring 11 are placed; and a pin 12. A ring pusher 6 is mounted split, consisting of two 25 sectors, which are pulled by a ring 13.

The anvil 9 is provided with an outer conical surface 14 interacting with the inner cone 7 of the annular pusher 6, the outer cone of which comes into contact with the response conical surfaces of the rotary sectors 10. The latter on the pin 12 have the ability to move along the axis of the housing 1, and through the windows in the housing 1 to move out of it The bob head works as follows.

sector

fulfilled

The round of drill pipe with the device is lowered into the casing to the required depth.

The reciprocating pusher 6 driven in reciprocating 3 is moved relative to the housing 1 downwardly, introducing between the conical surface 14 of the anvil 9 and the conical surfaces of the sectors 10, pushing the latter towards the casing before contact with them.

 In this position, the shock pulses from the sliding sections 1O are transmitted to the casing and provide sufficient contact between them for lifting the casing. The vibration transmitted from the device to the casing d reduces its friction against the borehole walls, reducing the force required for lifting.

If it is necessary to transfer the location of the shock impulses on the casing or when switching to lifting the drill string without a device, the latter is disconnected from the casing by disconnecting the internal striker 2 from the working state of the external striker 3 s.

Simultaneous application to the side of the axial load on the drill string and shock pulses from the striker 2 on the anvil 9 disengages the pusher 6, and the spring 5 twists the sliding sectors into the transport position.

Editor E. Papp

Compiled by I. Levkoeva

Tekhred r Gortvay Proofreader M .; Demchik

Order 3968/21

Circulation 548 Subscription

VNIIGSh of the USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

fpi4Z Z

Claims (1)

1. INTERNAL RELEASING TUBING, · including a housing with a window * mating with the conical surface of the gripping sectors, a striker with an axial channel, mounted to interact with the pusher, and a release unit for the gripping sectors located in the axial channels of the pusher and the striker, characterized in that, for the purpose of increase reliability by facilitating the release of the gripping sectors and simplifying the design, the tube is equipped with a hydraulic hammer, the anvil of which is made in the form of a truncated cone, the larger base of which is located on the part of the capture E in which are arranged gripping sector with the inner conical surface, the pusher having an axial channel and an outer conical surface sectors, and a pusher formed split and has an inner conic kuyu surface mating with the conical surface of the anvil. SS Figure 1 SU .... 1245685 1245685 2. The tube under item 1, about t - cotton sectors are executed rotary licking I am so tame. The drill pipe string with the device is lowered into the casing; to the required depth. Given in the reciprocating movement of the striker 3, the annular pusher 6 moves relative to the housing 1 downward, penetrating between; the conical surface 14 of the anvil 9 and the conical surfaces of the sectors 10, pushing the latter towards the casing until they come into contact with them. In this position, shock pulses from the sliding sectors 10 are transmitted to the casing and provide sufficient contact between them to lift the casing. The vibration transmitted from the device to the casing reduces its friction against 20 of the borehole wall, reducing the force required for lifting. If it is necessary to transfer the position of the shock pulses on the casing or when switching to 25, lifting the drill string without a device, disconnecting the latter from the casing pipes, is carried out by disconnecting the external hammer 3 from the operating state and turning on the internal hammer 2 in the shock mode. The simultaneous application of the axial load on the drill string and shock pulses from the hammer ₃₅ 2 along the anvil 9 disengages the pusher 6 from the gear and the spring 5 places the sliding sectors in the transport position.