RU82264U1 - SHOES FOR INSTALLING A BREAKER IN A WELL - Google Patents

Abstract

A shoe for installing a shutoff in the well, including a threaded housing for connecting to the shutoff and the central passage channel, a seat and a ball valve located in the central channel above the seat, which is rigidly connected to the body, and the central channel of the body is equipped with radial channels below the seat, this sleeve is located above the seat in the housing, characterized in that for connecting to the overlap the housing is equipped with a special tapered thread, and the sleeve located above the seat is removable, and all details the shoes are made of easily drilled polymer material.

Description

The proposal relates to the oil and gas industry, in particular to the field of well drilling, in particular to devices for installing profile shutoffs when they isolate areas of drilling complications.

A device is known “Shoe for installing a profile overlap in the well” (patent PM No. 56454, IPC ЕВВ 29/10, publ. Bull. No. 25 of 09/10/2006), including a housing made with the possibility of connection with the shutoff, with a central passage a channel, a seat and a ball valve, while on the outer surface of the casing there is an annular selection and the annular protrusions located above for connecting to the overlap and for sealing this connection, and the central channel above the saddle, rigidly connected to the casing, is equipped with th cylindrical insert with internal longitudinal channels, inside of which there is a ball valve with the possibility of axial movement, moreover, the housing is made of easily drilled material.

The disadvantages of this device are:

- the need to manufacture complex surfaces on the shank of the profile overlap to provide a rigid and tight connection with the body, which must be poured (in the form of a plastic melt or cement mortar) into the shank of the overlap and processed together with the shank, which significantly increases the cost of the device;

- after destruction of the shoe body, it is necessary to use a tool to destroy or remove the seat and ball valve made of metal. Also known is “A shoe for installing a profile overlap in the well” (patent PM No. 54391, IPC ЕВВ 29/10, publ. Bull. No. 18 dated 06/27/2006), including a threaded housing for connection to the overlap and to the central passage channel , a seat and a ball valve, wherein the ball valve is located in the central channel above the seat, which is rigidly connected to the body, and the central channel of the body is equipped with radial channels below the seat, below which it is plugged, and a sleeve with an axial hole is located above the seat in the body, rigidly connected to pusom, wherein the ball valve is equipped with cylindrical guide inserted into the axial hole of the sleeve to move longitudinally. The disadvantages of this device are:

- the need for additional tripping and the use of special milling devices to destroy the shoe, which significantly increases the cost of using the device;

- unreliable fixation of the shoe with a cylindrical thread without additional fixing, which often leads to unauthorized opening of the shoe.

The technical task of the utility model is to create a reliable, easy-to-manufacture design of the overlap shoe, which eliminates additional tripping operations.

The technical problem is solved by a shoe for installing the shutoff in the well, including a threaded housing for connecting to the shutoff and the central passage channel, a seat and a ball valve located in the central channel above the seat, which is rigidly connected to the body, and the central channel of the body is equipped with radial channels below the seat while a sleeve is located above the seat in the housing.

What is new is that for connecting to the overlap, the body is equipped with a special conical thread, and the sleeve located above the seat is removable, and all the shoe parts are made of easily drilled polymer material.

The drawing shows a shoe for installing an overlap with an axial longitudinal section.

The shoe for installing the shutoff in the well includes a housing 1 with a thread 2 for connecting to the shutoff 3 and with a central passage 4, a seat 5 and a ball valve 6 located in the central channel 4 above the saddle 5, which is rigidly connected to the housing 1. Central channel 4 of housing 1 is equipped below the saddle 5 with radial channels 7. Above the saddle 5 in the housing 1 is a sleeve 8. The thread 2 of the connection of the overlap 3 with the housing of the shoe 1 is made of a conical, special profile. The sleeve 8, located above the seat 5, is removable for installation of the ball valve 6. All parts of the shoe are made of a polymer easily drilled material, for example, caprolon.

The device operates as follows.

A ball valve 6 is installed in the saddle 5 of the shoe body 1, above which a sleeve 8 is installed (for example, by means of a thread) with holes 9 for fluid flow and preventing valve 6 from falling out of the shoe 1. Next, the shoe assembly is fixed to the lower end of the overlap 3 with special profile tapered thread with a certain moment (5 kN · M), providing the required tightness and sealing in the connection. After that, the overlap 3 with the shoe is lowered into the well (not shown in Fig.), While the borehole fluid passing through the central channel 4

and squeezing the valve 6 from the seat 5, fills through the openings 9 the internal space of the overlap 3. After reaching the installation zone of the overlap 3, excessive pressure is created in it by pressing the ball valve 6 against the seat 5, under the action of which the profile pipes (not shown in Fig. not shown ) of the shutoff 3 straighten before being pressed against the walls of the well (not shown in the figure). Next, a flare tool is lowered into the shutter 3 (not shown in FIG.), Under the influence of which the shutter 3 is pressed against the well walls. Upon reaching the shoe, the flare tool provided with a bottom mill (not shown in the drawing) destroys the shoe and all its parts, which are made of easily destructible material, for example, polyamide.

The proposed shoe is simple to manufacture, and simplifies the installation of the shutoff in the required interval of the well, and is also easily drillable, which eliminates additional STR for destruction of the shoe at the bottom of the well and allows its further deepening without reducing the mechanical speed and penetration of the bit.

Claims (1)

A shoe for installing a shutoff in the well, including a threaded housing for connecting to the shutoff and with the central passage channel, a seat and a ball valve located in the central channel above the seat, which is rigidly connected to the body, and the central channel of the body is equipped with radial channels below the seat, this sleeve is located above the seat in the housing, characterized in that for connecting to the overlap the housing is equipped with a special tapered thread, and the sleeve located above the seat is removable, and all details the shoes are made of polymeric easily drilled material.