RU167853U1 - REUSABLE ASSEMBLY AND TRANSMISSION KIT FOR CUMULATIVE HOUSING PUNCHES - Google Patents

Abstract

The utility model relates to detonating devices that are triggered by mechanical action to ensure detonation in cumulative perforators. The tasks of creating a utility model are: to increase the reliability of operation, simplify the design, increase the angle of rotation of individual elements of the connection unit and provide reusable application of the design. The technical result of the claimed solution is the possibility reuse of individual elements of the connection node. The solution to this problem was achieved many times m knot of connection and transmission of detonation of a cumulative casing punch containing a transmitting and receiving parts interconnected by a detachable swivel, while the first detonating cord and detonator are installed in the transmitting part in the central channel, and the second booster and second detonating cord are in the receiving part, the fact that the transmitting part is made in the form of a first housing with a central channel, the first housing is connected to an external sleeve, between which a removable disk is sealed, sealed at the end with a rubber ring, and the reception The first part is made in the form of a second case with a second central channel having a conical hole in which a conical washer is installed. The first case can be connected to the sleeve by a thread and fixed with a pin. The removable disk may have a radial recess from the side of the end facing the receiving part. The first detonating cord may be centered in the first sleeve mounted in the first housing. The second detonating cord may be centered in a second sleeve mounted in the second housing. The receiving part can be performed with

Description

The utility model relates to the connection nodes of the bodies of cumulative perforators and the formation of a detonation chain.

Known node connection and transmission of detonation in perforators according to the patent of the Russian Federation for the invention No. 2386793, IPC E21B 43/117, publ. 04/20/2010 r.

This assembly contains a frame, an adapter, a detonating cord, a booster, a booster sleeve, which is made in the form of a disk and a cylindrical part with an axial hole for accommodating the booster. The adapter has a through hole along the longitudinal axis with a cylindrical groove to accommodate the booster sleeve and detonating cord. The knock transmission unit is additionally equipped with a detonating cord, a booster, a booster bushing, a frame bushing. The boosters are mounted on detonating cords, the additional booster sleeve is made in the form of a disk and a cylindrical part with an axial hole to accommodate the additional booster and is placed in the inner hole of the frame sleeve from the side of the cylindrical groove at the end of the frame sleeve to accommodate the disk. A recess is made on the end side of the adapter, forming a cylindrical guide inside it, and a groove with an external diameter equal to the diameter of the recess is made on the end of the frame sleeve in contact with the end side of the adapter. At the same time, an annular thickening is made outside the middle part of the carcass sleeve, which is integral with the carcass sleeve.

Disadvantages: the complexity of the design and its one-time use.

Known node connection and transmission of detonation in perforators according to the patent of the Russian Federation for the invention No. 2307237, IPC E21B 43/1185, publ. 09/27/2007

This unit contains an adapter, a sleeve located in the inner hole of the adapter, a booster, a detonation cord, the end of which is connected to the booster. The booster is located in the sleeve. The sleeve is made in the form of a disk and a cylindrical part with an axial hole. On the outer side of the cylindrical part of the sleeve are annular beads. A partial longitudinal section is made at one end of the cylindrical part of the sleeve. The sleeve of the cumulative hammer drill detonation transmission device comprises a cylindrical part with an axial hole, a disk located on the outside of the cylindrical part. The sleeve is provided with annular beads located on the outer side of the cylindrical part of the sleeve, and a partial longitudinal section of the cylindrical part of the sleeve from one end.

Disadvantage: one-time use of the design.

Known node connection and transmission of detonation in perforators according to the patent of the Russian Federation for the invention No. 2422627, IPC E21B 43/117, publ. 06/27/2011

This assembly contains a sleeve made in the form of a cylindrical part with an axial hole, a disk with a hole and a shoulder inside the hole. It is equipped with a nut with an internal conical part, the cylindrical part at the end opposite to the disk is made with a petal collet. A thread is made on the outer side of the cylindrical part, onto which a nut is screwed, covering the inner cone-shaped part of the petal collet.

Disadvantage: one-time use of the design.

Known node connection and transmission of detonation in perforators according to the patent of the Russian Federation for the invention No. 2519091, IPC E21B 43/117, publ. 06/10/2014 g, prototype.

This assembly comprises a first part and a second part interconnected by a detachable articulation. The transfer charge is placed in the first part and connected through the first receive charge to the detonating cord. The second receiving charge is placed in the second part and connected to the second detonating cord. In the first part, a blind hole is made with a thread on the part of the hole in which the shock-absorbing sleeve is placed. Inside the shock-absorbing sleeve, a cumulative transfer charge is placed. The shock absorbing sleeve and the cumulative transfer charge are fixed inside the blind hole of the first part by means of a sleeve connected by a threaded connection to the first part. Provides increased reliability of operation.

Disadvantage: one-time use of the design.

The tasks of creating a utility model: improving the reliability of operation, simplifying the design, increasing the angle of rotation of the individual elements of the connection node and ensuring reusable application of the structure.

The technical result of the claimed solution is the ability to reuse individual elements of the connection node.

The solution to this problem was achieved in a reusable knot connection and transmission unit for a cumulative casing punch, containing transmitting and receiving parts interconnected by a detachable swivel, while the first detonating cord and detonator are installed in the transmitting part in the central channel and the second booster in the receiving part and a second detonating cord, in that the transmitting part is made in the form of a first housing with a central channel, the first housing is connected to an external sleeve, between which a replaceable di a densified end of the rubber ring and the receiving portion is formed as a second housing with a second central channel having an inlet tapered hole in which is installed a conical sleeve, wherein the length of the conical holes is chosen from the condition:

L = (2.0 ... 3.0) d,

where L is the length of the conical hole;

d is the diameter of the channel behind this hole.

The first housing may be threaded to the sleeve and secured with a pin. The removable disk may have a radial recess from the side of the end facing the receiving part. The first detonating cord may be centered in the first sleeve mounted in the first housing. The second detonating cord may be centered in a second sleeve mounted in the second housing. The receiving part can be made with the possibility of rotation relative to the transmitting part by 8 ° -10 °.

The essence of the technical solution is illustrated by the following drawings of FIG. 19:

- in FIG. 1 shows the connection assembly;

- in FIG. 2 shows a longitudinal section of a transmitting part;

- in FIG. 3 shows a view in longitudinal section of the receiving part;

- in FIG. 4 shows the process of connecting the transmitting and receiving parts;

- in FIG. 5 shows a diagram of the choice of the depth of drowning of the booster depending on the angle of inclination of the connection node,

- in FIG. 6 shows a removable disk,

- in FIG. 7 shows the protruding part of the second body,

- in FIG. 8 shows the lower part of the outer sleeve,

- in FIG. 9 shows view B.

Designations accepted in the description:

1. transmitting part,

2. receiving part,

3. first building,

4. outer sleeve,

5. thread

6. locking screw,

7. first central channel,

8. a cylindrical cavity,

9. transfer charge,

10. first sleeve,

11. washer,

12. first detonating cord,

13. first booster,

14. butt,

15. rubber ring,

16. removable disk,

17. the internal cavity,

18. side slot

19. hammer drill case,

20. frame sleeve,

21. butt,

22. second building,

23. side surface

24. ring groove,

25. flat

26. second central channel,

27. protruding part,

28. conical hole,

29. conical sleeve,

30. second washer,

31. second booster,

32. second sleeve,

33. second detonating cord,

34. butt,

35. spherical recess,

36. conical surface

37. The internal conical hole formed after the actuation of the cumulative charge.

The knot of connection and transmission of detonation (Fig. 1) contains a transmitting part 1 and a receiving part 2, pivotally connected.

The transmitting part 1 (Fig. 1 and 2) consists of a first housing 3, on which an external sleeve 4 is mounted, which is screwed 5 through a thread to the first housing 3 and fixed with a locking screw 6.

In the first housing 3, a first central channel 7 is formed along its axis. The first central channel 7 is stepwise shaped and comprises a cylindrical cavity 8 in which a transfer charge 9 is installed.

The first sleeve 10 is installed in the first central channel 7, inside of which the washer 11 is installed. The first detonating cord 12 passes through the first sleeve 10 and the washer 11. Next, the first booster 13 and the transfer charge 9 are installed. The tightness of the cylindrical cavity 8 of the first case 3 is ensured by a rubber ring 15 mounted on the end 14 of the first housing 3. To the end 14 is pressed a removable disk 16.

For assembly on the outer sleeve 4, a side slot 18 is made under the removable disk 16. On the other hand, a perforator body 19 is mounted concentrically to the first body 3, inside of which is a sleeve of a frame 20 contacting at the end face 21 of the first case 3. The body of a perforator 19 and the sleeve of the frame 20 are not part of a reusable knot of connection and transmission of detonation.

The receiving part 2 (Figs. 1 and 3) consists of a second body 22, on the side surface 23 of which there is an annular groove 24 for fixation at the wellhead, also flanges 25 are made on the annular groove 24 for twisting the key into the body of the perforator 19. Along the axis of the second the housing is made of the second Central channel 26.

A conical hole 28 is made inside the protruding part 27 of the second body 22 at the inlet of the second central channel 26, into which the conical sleeve 29 of plastic material is tightly pressed, repeating the shape of the conical hole 28. The conical sleeve 29 seals the inner cavity of the receiving part 2 and is a replaceable element. In the second central channel 26, a second washer 30, a second booster 31, a second sleeve 32, inside which a second detonating cord 33 passes, are arranged sequentially behind the tapered hole 28.

The immersion depth of the conical sleeve 29, depending on the angle of inclination of the joint, is selected so that at the maximum angle the cumulative stream of the transfer charge 9 passes through the center of the end face of the second booster 31.

The length L of the conical hole 28 is selected from the condition (Fig. 5 and 7):

L = (2.0 ... 3.0) d,

where L is the length of the conical hole 28;

d is the diameter of the channel behind this hole.

In FIG. 6 shows in more detail the design of the interchangeable disk 16. At the end 34 of the interchangeable disk 16 facing the receiving part 2 of radius Rl, a spherical recess 35 is made in the form of a part of a sphere (less than half).

The optimal value of the radius R1:

R1 = (l, 0 ... 3.0) D _zar ,

where R1 is the radius of the recess 35;

D _zar - the diameter of the transfer charge 9.

In FIG. 7 shows in more detail the design of the protruding part 27. The outer surface of the protruding part 27 is formed by a conical surface 36 and two spherical surfaces with radii R ₂ and R ₃ .

In the conical sleeve 29 after the cumulative charge is triggered, an internal conical hole 37 is formed having a cone angle γ corresponding to the cone angle of the conical hole 28.

The angle γ should exceed the angle α by about 2 ... 3 times to ensure that the cumulative stream hits the center of the second booster 31. The optimal value of this angle:

γ = 20 ° -30 °.

ASSEMBLY ASSEMBLY

The assembly of the connection node (Fig. 4) is as follows: the protruding part 27 is installed opposite the side slot 18 of the transmitting part 1 and is inserted into the inner cavity 17 of the outer sleeve 4 of the transmitting part 1.

Before installing the transmitting part 1 of the assembly into the case of the punch 19, more precisely, into the sleeve of the frame 20 of the body of the punch 19, install the first sleeve 10, inside which the first detonating cord 12 passes, put on the washer 11 with a central hole equal to the diameter of the first detonating cord 12 the first detonating cord 12, at the end of the protruding part of the first detonating cord 12, the first booster 13 is installed and fixed on this cord. The first booster 13 due to the holes in the first housing 3, is installed opposite the center of the transfer charge 9.

To assemble the receiving part 2, a second sleeve 32 is installed in the second central channel 26, inside which a second detonating cord 33 passes, a second washer 30 with a central hole for the second detonating cord 33 is installed on the protruding part, a second booster 31 is installed on the end of the protruding part of this cord fixed on this cord. When screwing the receiving part 2 into the case of the punch 19, the second booster 31 reaches the tapered sleeve 29 (Fig. 1).

The knot of connection and transmission of detonation in the form of separate parts is shown in figures 1-7.

The receiving part 2, through the side slot 18 on the side surface of the outer sleeve 4, is inserted inwardly of the transmitting part 1 into the inner cavity 17 (Fig. 4). Such a connection scheme, without turning 90 degrees, simplifies the assembly process of long perforator bodies.

The possible angle of mutual rotation of parts 1 and 2 α is 8 ° -10 °. This is quite enough to install a perforator in a horizontal well. Large angles are impractical to perform, since it will make it difficult to transfer the cumulative jet of the transfer charge 9 through the center of the end face of the second booster 31 (Fig. 5).

Node operation

The operation of the knot of connection and transmission of detonation occurs as follows: the transmitting part 1 is always installed from the side of the geophysical cable (not shown), i.e. from above, receiving part 2 from below. When connecting the parts, the protruding part 27 of the second housing 22 of the receiving part 2 moves vertically inside the outer sleeve 4 of the transmitting part 1 and is pressed against the spherical surface R _{3 of the} outer sleeve 4 (Fig. 8), which in the future will not allow the receiving part 2 to disengage . The lower surface of the protruding part 27 of the second housing 22 of the receiving part 2 also has a spherical surface made of radius R ₃ . Coinciding spherical surfaces increase the contact surface, which leads to an increase in the tensile force of the joint assembly. When detonation passes through the first detonating cord 12, the first booster 13 of the transmitting part 1 is triggered, exciting the cumulative process in the transfer charge 9. The cumulative jet pierces the removable disk 16, then the conical sleeve 28 of the receiving part 2. The cumulative jet regardless of the rotation of the connection node (8 ° - 10 ° passes through the end surface of the second booster 31 (point A in Fig. 5) of the receiving part 2 due to the immersion of the second booster 31 in the second central channel 26 of the second housing 22 of the receiving part 2. This leads to a stable process the knocking impulses in the second booster 31, then in the second detonating cord 33.

To reuse the main parts of the assembly, the removable disk 16, the conical sleeve 29 and all the pyrotechnic means are changed.

Application of the utility model allowed:

- to provide reusable use of the main components of the site,

- ensure reliable transmission of detonation,

- simplify the design of the node and its assembly,

- increase the reliability of operation,

- increase the angle of rotation of the individual elements of the connection node.

Claims (9)

1. A reusable knot connecting and transmitting detonation of a cumulative casing punch, containing transmitting and receiving parts interconnected by a detachable swivel, while the first detonating cord and detonator are installed in the transmitting part in the central channel, and the booster and second detonating cord are in the receiving part characterized in that the transmitting part is made in the form of a first housing with a central channel, the first housing is connected to an external sleeve, between which a removable disk is sealed, sealed at the rubber end ring, and the receiving part is made in the form of a second body with a second central channel having a tapered bore at the inlet in which the tapered bushing is installed, and the length of the tapered bore is selected from the condition: L = (2.0-3.0) d, where L is the length of the conical hole; d is the diameter of the channel behind this hole. 2. The reusable knot connection and transmission of the detonation of the cumulative casing punch according to claim 1, characterized in that the first casing is threaded to the sleeve and fixed with a pin. 3. The reusable knot of connection and transmission of detonation of a cumulative casing punch according to claim 1, characterized in that the removable disk has a radius recess from the side of the end facing the receiving part. 4. A reusable knot for connecting and transmitting detonation of a cumulative casing punch according to claim 1 or 2, characterized in that the first detonating cord is centered in the first sleeve installed in the first casing. 5. Reusable knot connection and transmission of the detonation of a cumulative casing punch according to claim 1 or 2, characterized in that the second detonating cord is centered in the second sleeve installed in the second housing. 6. A reusable knot for connecting and transmitting detonation of a cumulative casing punch according to claim 1 or 2, characterized in that the receiving part is rotatable by 8 ° -10 ° relative to the transmitting part.

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