SU1301963A1 - Arrangement for sealed joining of units of deep-well instruments - Google Patents

Abstract

The invention relates to the field of well logging and allows improving the reliability of operation of the device at high pressures and pressures. For this, it contains the head (D) 3 connected by means of a nut 1 through a sealing element (CI) 2 and ends of 4 downhole tools. They are pressed into the case of the plug 5 and the outlet 6. The latter can be made in one piece with G 3 and end 4. The sleeve (B) 8 made of a soft metal, for example annealed steel, is inserted into the conical holes of the body. B 8 is drilled by means of an insulator made of heat-resistant solid dielectric, for example, on the basis of glass, ceramics, pins 10. They are firmly fixed with coil springs made of flat oval wire. At the end of G 3 there is a cylindrical ledge 14 on which UE 2 is located in the form of an elastic metal ring of V-shaped cross section. The thin-walled expendable whiskers UE 2 are compressed with conical surfaces 13 of the end 4 and D 3. A sealant, such as a compound, may be placed between the case and B 8. When the outside pressure is increased outside the device, the UE 2 mustache is strongly pressed against the surfaces 13, sealing the device. 4 3.p. f-ly, 4 ill. iP o :) IV, co o oo

Description

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The invention relates to a technique for geophysical surveys of a well and can be used in well tools that operate under high temperature and pressure conditions. five

The purpose of the invention is to increase the unit operation time at high temperatures and pressures.

FIG. 1 shows a device for the hermetic connection of downhole devices, a general view; on ig. 2 is the same as the embodiment in which the metal cases of the plug and the socket are integral with the head and the end of the devices; in fig. 3 shows the node I in FIG. 1, which shows the mechanical and electrical connection of the pins when their axes are displaced; in fig. 4 shows possible embodiments of the sleeves.

The device for tight connection of downhole tools consists of connected with a cap nut 1 through the sealing element 2 of the head 3 and the ends of 4 downhole devices in which they are pressed, using a conical joint, the plug body 5 and sockets 6 made of soft metal. Sleeves 8 made of soft metal, for example annealed, are pressed into the conical holes of the 7 bodies. The annealed metal in the streets allows you to compensate for the tolerances for making conical surfaces of bore 7 and bushings 8, and also covers their micro-irregularities. Stools 8 are sealed by insulator 9 made of heat-resistant solid dielectric, for example, based on glass, ceramics, pin contacts ten.

On the pins 10 sockets are rigidly fixed, for example, by means of spot welding, helical springs 11 made of flat oval wire, the inner diameter of which is less than the diameter of the connected pins o On the ends of the helical springs facing the plug, the catchers 12 are truncated cone. The catchers 12 are worn on the conical ends of the male pins of the plug, and the helical springs made from flat-oval wire allow the contacts to freely enter and enter, and due to the deviation of the coils from the axis of the spring, they compensate for the displacement of the pins 30

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Commodity plugs and sockets from a common axis. In so doing, the flat surface of the wire maintains good electrical contact. On the 7-ends of the head and the end, there are tapered surfaces 13 directed towards each other, the axes of which coincide with the axis of the device. At the end of the head there is a cylindrical ledge 14 on which the sealing element 2 is arranged in the form of an elastic metal ring of V-section, the thin-walled expendable whiskers of which are compressed by the conical surfaces 13 of the head and the end, a preliminary tension is created. A cylindrical step 14 is inserted into the end opening and is a centering element for the plug and socket.

The finger 15 fixes the plug and the socket from the angular displacement.

One of the embodiments (Fig. 2) is that the casing of the plug 5 and the socket 6 are made in one piece with the head 3 and the end of 4 downhole tools. The pins 10 are sunk by means of the insulator 9 directly into the openings of the housings.

The sleeves 8 can be made (Fig. 4) threaded for ease of operation and maintainability of the device. Sealant 16 is located in the gap between them and the housing, for example the compound KLT-75T, or barrel-shaped, tightening the nut 17.

The device works as follows.

When the pressure outside the device is increased, the pre-compressed mustache of the sealing element 2 is even more pressed against the conical surfaces 13 of the head and ca. (5 drilling equipment, sealing the device. If the sealing fails, slow filling of the internal cavity of the device or fast filling of the cavity occurs) hydraulic shock. Electric communication lines are closed with flushing fluid, however, depressurization of downhole tools does not occur. On the metal elements of the device and the insulator of small diameter, designed for a force greater than the force of water hammer.

A device for tightly fitting downhole tool assemblies increases the reliability of operation of these devices at high temperatures and pressures, with its use the head and end dimensions are reduced, and the operating convenience is improved.

Claims (5)

1. Device for tight connection of downhole tool assemblies, fO comprising a head and an end with a sealing element placed between them and their plug and socket cases embedded in them, which are connected by means of pins and sockets, in order to increase the reliability of the device at high temperatures and pressure, it 15 The elastic metal ring is V-shaped, the cylindrical ledge and conic surfaces are made at the ends of the head and the ends, between which the sealing element is placed, and the contact sockets are made in the form of helical springs made of flat-oval wire. 2. The device according to p. 1, on T. of the course is that the plug and socket cases are made in one piece, with the head and the end. 3. The device according to claim 1, wherein the insulator is made of a solid dielectric, for example, based on glass. 4. The device according to claim 1, about tl and supplied with sleeves of soft metal, 20 of which are that the sleeves are made of annealed steel. in which the pins are inserted by means of an isolator, the bushings are pressed into the cases of the plug and socket, the sealing element is made in The elastic metal ring is V-shaped, the cylindrical ledge and conic surfaces are made at the ends of the head and the ends, between which the sealing element is placed, and the contact sockets are made in the form of helical springs made of flat-oval wire. 2. The device according to p. 1, on T. of the course is that the plug and socket cases are made in one piece, with the head and the end. 3. The device according to claim 1, wherein the insulator is made of a solid dielectric, for example, based on glass. 4. The device according to claim 1, which is based on the fact that the sleeves are made of annealed steel. 5. A device according to claim 1, characterized in that a sealant is placed between the sleeve and the housing. Phage. 2 8 13 JL B F 7 7 f.z Yu t il hell vvsT.M   y / / hell / vvsT.M X //, y, {/; y .  / / / I Y- / /, b ft ftfi9X 3 Sv-r- f 3 Compiled by N.Krivko Editor G.GereshnTehred M.Morgental Corrector M.Sharoshi Z-atu-ol 1im / TO-, - - - - ". - -. .. Circulation 533 Subscription Order 1197/32 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, F (/ r.4