RU49894U1 - DEVICE FOR TRANSMITTING DETONATION OF CUMULATIVE PUNCHES AND ITS ASSEMBLY - Google Patents

Abstract

The invention relates to a device for transmitting detonation of cumulative perforators. The technical result is expressed in increasing the reliability of operation of the device for transmitting detonation of a perforator. The essence of the utility model is characterized by a combination of essential features common with the closest analogue: adapter, detonation cord, and different from the closest analogue: the end of the detonating cord is attached to the booster, which is placed in a sleeve made in the form of a disk and a cylindrical part with an axial hole and ring beads, located on the outside of the cylindrical part of the sleeve, and the sleeve is placed in the inner hole of the adapter.

Description

The invention relates to a device for transmitting detonation of cumulative perforators.

Known transmission devices for the detonation of cumulative perforators (see, for example, the description of the invention to patent RU 2215127 E 21 43/117, published on 10.27.2003). The disadvantage of these devices perforators is not reliable enough, due to the design and implementation of the knock transmission units.

The closest analogue is a detonation transmission device for a case-shaped cumulative perforator (see, for example, the description of the invention to patent SU 1831561 Е 21 В 43/11, published July 30, 1993. Bull. No. 28), containing a sleeve, detonation cord, metal cladding, sleeve, located in the case of a cumulative punch.

A disadvantage of the detonation transmission device of a casing downhole cumulative perforator is the insufficiently high reliability of detonation transmission due to a possible change in the gap between adjacent metal linings, in particular due to insufficient fixation of the position of the sleeve.

The objective of the utility model is to obtain a highly reliable device for transmitting detonation of a cumulative perforator.

The technical result is expressed in increasing the reliability of operation of the device for transmitting detonation of a cumulative perforator.

The essence of the device for transmitting detonation of a cumulative punch is characterized by a combination of essential features common with the closest analogue:

adapter, detonation cord,

and different from the closest analogue:

the end of the detonating cord is connected to the booster, which is placed in a sleeve made in the form of a disk and a cylindrical part with an axial hole and ring beads located on the outer side of the cylindrical part of the sleeve, and the sleeve is placed in the inner hole of the adapter.

The essence of the node of the device for transmitting detonation of a cumulative perforator - sleeve is characterized by a combination of essential features common with the closest analogue:

cylindrical part with an axial bore,

and different from the closest analogue:

it is equipped with a disk located on the outer side of the cylindrical part of the sleeve, annular beads located on the outside of the cylindrical part of the sleeve.

The essence of the detonation transmission device of the cumulative perforator and its node - the sleeve is illustrated by drawings, where

figure 1 shows a view of a detonation transmission device in longitudinal section with an adapter for connecting two adjacent perforator bodies;

figure 2 shows a view of a perforator in longitudinal section with an adapter for connecting a perforator with a mechanical explosive head;

figure 3 shows a view of a detonation transmission device in longitudinal section with an adapter for connecting a hammer with a cable;

figure 4 shows a view of the node of the knock transmission device - the sleeve in longitudinal section with a ring located on the edge of the cylindrical part of the sleeve;

figure 5 shows a view of the knot transmission device of the detonation of the sleeve in longitudinal section with a ring located in the middle of the cylindrical part of the sleeve.

The detonation transmission device comprises an adapter 5 connected to the housing of the cumulative perforator 2, a detonation cord 7 connected to the booster 3. The booster 3 is placed in the sleeve 1 (figure 1). The adapter 5 has a longitudinal axis through the inner hole with a cylindrical groove to accommodate the sleeve 1 and the detonation cord 7. The sleeve 1 is made in the form of a disk 9 and a cylindrical part 8 with an axial hole 13 (4, 5). On the outer side of the cylindrical part 8 of the sleeve 1 are located annular beads 10 (Fig.4, 5). A cylindrical groove in the through hole of the adapter 5 corresponds to the size of the disk 9 of the sleeve 1. The sleeve 1 is placed in the inner hole of the adapter 5 from the side of the cylindrical groove (Figs. 1, 2, 3).

In one embodiment of the sleeve 1 in the cylindrical part 8 of the sleeve 1, a partial longitudinal section 11 is made from one end (FIGS. 4, 5). In another embodiment of the sleeve 1, the disk 9 is located on the edge of the cylindrical part 8 of the sleeve 1, and a partial longitudinal section 11 in the cylindrical part 8 of the sleeve 1 is made with

opposite from the disk 9 end (figure 4). In any of the above embodiments of the sleeve 10, the annular collars 10 located above the partial longitudinal section 11 of the cylindrical part 8 of the sleeve 1, are made in the form of half rings with a gap between their ends equal to the width of the partial longitudinal section 11 of the cylindrical part 8 of the sleeve 1. The sleeve 1 may be made of rubber.

In the first embodiment of the device for transmitting detonation when connecting two adjacent bodies 2 of a cumulative perforator, the outer sides of the adapter 5 have threaded parts and parts for accommodating the sealing rings 12 (Fig. 1). The threaded parts of the adapter 5 are screwed into the end parts of the cases 2. In this case, a bracket 6 is located between the end ends of the adapter 5 and the case 2, which fixes the frame 17 with the cumulative charges placed inside it inside the case 2 of the cumulative perforator. Fixing is carried out using the pins 4 located in the bracket 6, and pressing the end of the adapter 5 screwed into the housing 2 (Figs. 1, 2, 3).

In the second embodiment of the device for transmitting detonation when connecting the body 2 of the cumulative perforator with a mechanical blasting head (not shown conventionally in the drawing of FIG. 2), one outer side of the adapter 5 has a threaded part and a part for accommodating the sealing rings 12 for connection with the body 2 of the cumulative perforator and the other external part is made in the form, providing the connection of a mechanical explosive head and corresponding to that part of the head that is attached to the adapter 5 (figure 2).

In the third embodiment of the device for transmitting detonation when connecting the housing 2 of the cumulative punch with an armored electric cable to form an electrical circuit between the conductive core cable and the electric detonator 16, one outer side of the adapter 5 has a threaded part and a part for accommodating the sealing rings 12 for connection with the housing 2 of the cumulative perforator, and the other outer part is made in the form, providing connection to the armored electric cable (figure 3). At the same time, in the hole of the adapter 5 there is a contact rod of the electric input 14, an electric wire 15, an electric detonator 16, a sleeve 1 with a booster 3. In this embodiment, the disk 9 of the sleeve 1 is located in the middle of the cylindrical part of the sleeve 1, in which the booster 3 is placed. One part of the sleeve 1 is located in the adapter 5, and the other part is located in the bracket 6 (figure 3).

The detonating cord 7 is used to transmit detonation from an electric detonator 16 or from a mechanical blasting head (not shown conventionally in the figure of FIG. 2) to the cumulative charges of a perforator. When connecting several buildings 2 at the ends of the detonating cord 7, boosters 3 are installed to ensure the preservation of the detonation chain. When lowering the punch on the cable (not shown conventionally in figure 3), the adapter 5 is designed to undermine the detonation cord 7. When lowering the punch on an armored cable using a cable head, the electrical circuit in the punch attached to the cable is formed by a conductive core cable, a contact rod 14 of the electric input, electric wire 15, electric detonator 16, body 2 of the perforator itself and the armor of the cable.

The connection of the adapter 5 with a mechanical blasting head is performed during the descent into the well of a cumulative perforator on the tubing.

The operation of the device for transmitting detonation of a cumulative perforator is carried out in the following order. After the descent into the well and the installation of the perforator at a predetermined depth, an electric impulse is supplied during descent on the cable, and during descent on the tubing, the rod is lowered into the well, which triggers the mechanical blasting head. In both cases, detonation circuit and perforator charges are triggered. The cumulative jets formed during the explosion of cumulative charges pierce the casing 2, the liquid layer in the well, the casing, the cement layer and deep channels in the rock, providing communication between the formation and the well.

After shooting, the perforator is removed from the well. The adapter 5 can be used repeatedly, the remaining parts of the device for detonation transmission of a single use.

The trouble-free and trouble-free operation of the claimed device for transmitting detonation of a cumulative disposable perforator is provided both by the design as a whole and by the implementation of its individual units.

In particular, the design of the sleeve 1, which allows the use of various types of boosters 3 (with different diameters), which ensures reliable fastening of the booster 3 and detonating cord 7 in the adapter 5 while maintaining the specified clearance between the boosters 3 of the adjacent bushings 1 due to the presence of the disk 1 and ring beads 10. The presence in the cylindrical part 8 of the sleeve 10 of a partial longitudinal section 11 provides more

exact positioning of the booster 3 in the sleeve 1 when it is placed in it. After placing the booster 3 and detonation cord 7 in the sleeve 1, the subsequent placement of the sleeve 1 in the inner hole of the adapter 5 results in a dense compression of the detonation cord 1. The presence of ring beads 10 on the cylindrical part 8 of the sleeve 5 provides a more accurate location of the sleeve 1 relative to the adapter 5 and tight compression detonation cord 7

In this case, simplification of pairing of pairs of boosters 3 is achieved, which allows to reduce the number of pairings in the cumulative perforator, to improve the reliability of detonation transmission, to reduce the number of structural elements.

Claims (5)

1. A detonation transmission device for a cumulative perforator containing an adapter, a detonation cord, characterized in that the end of the detonation cord is connected to the booster, which is placed in a sleeve made in the form of a disk and a cylindrical part with an axial hole and annular collars located on the outside of the cylindrical part bushings, and the sleeve is located in the inner hole of the adapter. 2. The sleeve of the device for transmitting detonation of a cumulative perforator, containing a cylindrical part with an axial hole, characterized in that it is provided with a disk and ring beads located on the outside of the cylindrical part of the sleeve. 3. The sleeve according to claim 2, characterized in that in the cylindrical part of the sleeve from one end is made a partial longitudinal section. 4. The sleeve according to claim 3, characterized in that the disk is located on the edge of the cylindrical part of the sleeve, and a partial longitudinal section in the cylindrical part of the sleeve is made from the end opposite from the disk. 5. A sleeve according to any one of claims 3 and 4, characterized in that the annular flanges located above a partial longitudinal section of the cylindrical part of the sleeve are made in the form of half rings with a gap between their ends equal to the width of the cut of the cylindrical part of the sleeve.