SU1305320A1 - Device for retaining in emergency the cable of downhole instrument above the lubricator - Google Patents

Abstract

The invention relates to well testing and is intended for equipment during tripping operations. The purpose of the invention is to increase the reliability and speed of work. The device comprises a housing 1, a cable jamming unit (T) installed therein. The jamming unit consists of 13 (L

Description

from the two shoulders lever (P) 5 with protrusions A and the frame 9 with the rod 10 and the roller under T 12. The clamping inserts 3 are spring-loaded with a spring 2 mounted on the upper end of the body 1. The frame 9 is placed on the end of the rack 8 equipped with a jamming force regulator, made in the form of a multiplier q and connected with it a bellows 7 with a tip 6. With a breakage of T 12 or its weakening, the force acting on the roller 11 and on the tip 6, which raises one shoulder P 5, decreases. Other shoulder

one

The invention relates to equipment for tripping for hydrodynamic well testing with devices on a flexible element (cable, rope and wire) and can be applied in oil and gas applications with x.

The purpose of the invention is to increase the reliability and speed of work. The drawing shows a device for emergency retention of the cable of the depth device above the lubricator, a general section view.

A device for emergency retention of the cable of the submersible device includes a housing 1, a spring 2, clamping inserts 3 mounted on the upper end of the housing 1, protrusions 4 made on one shoulder of the double-arm lever 5 in contact with the spring-loaded clamp liners 3; the other arm of the lever 5 is in contact with the tip 6 of the bellows 7, having a multiplier chamber a and a controller S and mounted in a rack 8, on the end of which is placed a frame 9 with a shaft 10 and a roller 11 under the cable 12 mounted on an axis 13 and fixed by a bolt 14 and the housing 1 is connected to the lubricator 15 by means of the connecting element 16. The regulator. the jamming force is made in the form of a multiplier q and a bellows 7 connected to it with a tip 6.

The principle of operation of the device is as follows.

P 5 and the protrusions 4 act on the spring-loaded liners 3, moving them with the compression of the spring 2, and the T 12 is momentarily jammed. Upon subsequent tension of T 12, the frame 9 again sits on the post 8. The rod 10 acts on the shoulder P 5 and the tip 6 bellows 7, squeezing it. In this case, the opposite shoulder of the P 5 rises under the action of the spring 2. The insertion 3 rises and the T 12 freely moves under the action of the mass of the device or the winch., 1 Il.

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In the process of executing the operation of lowering (lifting) a deep-seated device (on a cable, rope or cable) into the well (from the well), the roller 11 of the frame 9 is acted upon by the mass of the instrument (tool) and the mass of the cable 12 located in the well. Under the action of the mass of the device and the cable frame 9 sits on the end of the rack 8, and the rod

10 through the shoulder of the two shoulders lever 5 - on the tip 6 of the bellows 7 and compresses it. Previously, the pressure of the working agent in the bellows 7 and the chamber of the multiplier a is regulated by the regulator 8 depending on the mass of the device.

In an emergency, i.e. the cable breakage 12 or loosening of it reduces the force acting on the roller

11 frame 9 and the tip 6 of the bellows 7, which raises the shoulder of the two shoulders lever 5. At the same time, the other shoulder of the two shoulders lever 5 and the projections 4 act on the spring-loaded clamping inserts 3, moving them with the compression of the spring 2, and momentarily jam the cable 12 between the insert 3 in the housing 1. During the subsequent tension of the cable 12 frame

9 again sits on the rack 8. The rod 10 acts on the shoulder of the two shoulders lever 5 and the tip 6 of the bellows 7, squeezing it. At the same time, the opposite shoulder of the shoulder arm 5 rises, under the action of the spring 2 spring-loaded clamping bushings 3

is lifted and the cable 12 is allowed to move unhindered by the mass of the device or the winch drive.

Release spring-loaded clamping inserts 3 after emergency retention of the cable depth of the device is as follows.

With the help of a winch mounted on the wellhead and to the drum of which the upper free end of the cable (cable, cable) 12 is attached, the cable 12 is tensioned, which, moving upwards, carries the clamping pins 3 with it. , release the cable 12. Under the tension of the cable 12, the frame 9 sits on the rack 8. The rod 10 acts on the shoulder of the two shoulders lever 5 and the tip 6 of the bellows 7, squeezing it. At this point, the opposite shoulder of the two shoulders lever 5 rises and allows the clamping inserts 3 to rise together with the cable 12.

The main purpose of the spring 2 is to hold the clamping jaws 3 in the upper position (after they are released from engagement with the cable 12)

Editor I.Lazarenko

Compiled by V.Tavrizov

Tehred M. Khodanich Proofreader A.Zimokosov Order 1403/28 Circulation 533 Subscription

VNIIPI USSR State Committee

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

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

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in order to provide the necessary clearance for the free movement of the cable 12 downwards.

Claims (1)

Invention Formula Device for emergency retention of the cable of the depth device above the lubricator, comprising a housing, a cable jamming unit installed in it, including a lever, a frame, a rack coupled to it, having elements for fastening to the lubricator, a roller for the cable mounted on the frame, and a rod located in the frame and in contact with the lever, characterized in that, in order to increase reliability and speed of operation, it is equipped with spring-loaded clamping inserts installed in the housing, housed in the rack Filling in the form of a multiplier and a bellows with a tip connected to it, the lever is filled with two shoulders, one end of it is in contact with the tip of the bellows, and at the other end of the lever, projections are made in contact with spring-loaded clamping inserts.