Energy gathering and explosion propagation device between oil pipe conveying perforating guns

Abstract

The invention relates to the technical field of oil and gas well perforation, in particular to an energy gathering and explosion propagation device between perforating guns conveyed by oil pipes. The device comprises a double-male connector, the two ends of the double-male connector are connected with an upper-stage perforating gun and a male-female connector respectively, and the male-female connector is connected with a lower-stage perforating gun; an upper centralizing body is installed in the double-male connector, a lower centralizing body is installed in the male-female connector, a first booster tube and a first detonating cord are installed in the upper centralizing body, the first booster tube is connected with the first detonating cord, the other end of the first detonating cord is connected with a perforating bullet of an upper-stage perforating gun, and a second booster tube and a second detonating cord are installed in the lower centralizing body. The second booster tube is connected with a second detonating cord, the other end of the second detonating cord is connected with a perforating bullet of a lower-stage perforating gun, the upper centralizing body is connected with an upper positioning disc, and the lower centralizing body is connected with a lower positioning disc. According to the explosion propagation device, the structure is simple, a complex assembly structure is abandoned, site construction operation is more convenient, and the explosion propagation efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas well perforation, and in particular to an energy-gathering explosion transmission device between perforating guns transported by an oil pipe. Background Art

[0002] As the workload of tubing-transported perforating increases year by year, rework problems caused by explosion failure will occur on average every year, which not only affects the production progress, but also increases the cost investment. At the same time, the double-center-connected explosion transmission connection structure of tubing-transported perforating is complex to operate and labor-intensive. Therefore, improving the sequential explosion transmission technology and further improving the first-time success rate have certain practical significance. According to statistics, there is a common point in the explosion failure rework wells that occur every year, that is, the explosion failure point is about 10 cm above the top of the lower-level perforating gun.

[0003] The detonator was detonated, but failed to detonate all the detonating cords. Only a section of about 10 cm of detonating cord could be detonated. The main reasons are as follows: first, the detonating cord was stuck too tightly, resulting in insufficient density of the detonating cord and insufficient detonation energy; second, in order to ensure that the detonator cannot be squeezed and collided during connection, the end face of the detonator is generally deeper than the detonation distance. The operation is too large, the detonation distance is difficult to control, and the explosion is easy to occur when the distance is large. In the rubber straightening body, because the energy transfer of the detonator is transmitted forward in the form of a spherical surface, the detonator The area for transferring energy is small, and according to the law of conservation of energy, part of the energy of the detonation wave will be absorbed by the rubber straightening sleeve during the transmission, so that the energy of the next level of detonator tube is gradually reduced; third, when the intermediate connection is installed and removed, the detonating cord is twisted and broken as the intermediate connection rotates, resulting in rework; fourth, each section of the perforating gun in the oil pipe conveying perforation relies on a detonating cord to transmit the explosion and detonate the perforating bullet to achieve the purpose of perforating. Because the diameter direction of the detonating cord is easily affected by the rarefaction wave when the detonating cord is deflagrated, the detonation energy is continuously attenuated. At present, the oil pipe conveying perforating gun adopts the method of connecting multiple sections of perforating guns in series with an intermediate joint. The intermediate joint is built with upper and lower detonators, detonator tube protection tubes, straightening sleeves, detonator cord locking components, etc. for detonation, which makes it easy to produce gaps between the upper and lower detonators, and there is an eccentricity between the upper and lower detonators, which will further affect the transmission of the detonation energy of the detonating cord, and the assembly process is required to be high. Therefore, in view of the above shortcomings, the present invention provides a concentrated detonation device between oil pipe conveying perforating guns. Summary of the invention

[0004] 1. Technical issues to be resolved: The invention provides an energy-gathering explosion transmission device between perforating guns conveyed by oil pipes, so as to overcome the problems that the installation process of the explosion transmission device between perforating guns conveyed by oil pipes in the prior art requires high precision, has low explosion transmission efficiency and is prone to quality problems.

[0005] (II) Technical solution: In order to solve the above technical problems, the present invention provides a tubing-transmitted perforating gun inter-energy transmission device, comprising: A double male joint, one end of the double male joint is connected to an upper perforating gun, and the other end of the double male joint is connected to a male-female joint, and the male-female joint is connected to a lower perforating gun; an upper centralizing body is installed inside the double male joint, and a lower centralizing body is installed inside the male-female joint; a first detonating tube and a first detonating cord are installed inside the upper centralizing body, the first detonating tube is connected to the first detonating cord, and the other end of the first detonating cord is connected to the perforating charge of the upper perforating gun; a second detonating tube and a second detonating cord are installed inside the lower centralizing body, the second detonating tube is connected to the second detonating cord, and the other end of the second detonating cord is connected to the perforating charge of the lower perforating gun; the upper centralizing body is connected to an upper positioning plate, and the lower centralizing body is connected to a lower positioning plate; The upper centralizing body comprises an upper centralizing body main body, one end of the upper centralizing body main body is provided with an upper centralizing body joint, the other end is provided with an upper centralizing body bell mouth, the outer wall of the upper centralizing body main body is provided with a top screw hole, the inner side of the upper centralizing body main body is provided with an upper centralizing body locking hole and an upper centralizing body center hole; The lower centralizing body comprises a lower centralizing body main body, one end of which is provided with a lower centralizing body joint, and the other end is provided with a lower centralizing body bell mouth, the outer wall of the lower centralizing body main body is provided with a top screw hole, and the inner side of the lower centralizing body main body is provided with a lower centralizing body locking hole and a lower centralizing body center hole.

[0006] Preferably, the upper straightening body locking hole is connected to the upper straightening body center hole, a C-shaped spring piece is installed in the upper straightening body locking hole, a top screw is installed in the top screw hole, the top screw presses against the C-shaped spring piece, and the aperture of the upper straightening body locking hole is larger than the aperture of the upper straightening body center hole.

[0007] Preferably, the lower straightening body locking hole is connected to the lower straightening body center hole, a C-shaped spring piece is installed in the lower straightening body locking hole, a top screw is installed in the top screw hole, the top screw presses against the C-shaped spring piece, and the aperture of the lower straightening body locking hole is larger than the aperture of the lower straightening body center hole.

[0008] Preferably, one end of the first detonator tube passes through the upper centralizing body locking hole and the upper centralizing body center hole and is led out from the upper centralizing body bell mouth, and the first detonating cord is installed in the upper centralizing body locking hole and the upper centralizing body center hole.

[0009] Preferably, one end of the second detonator passes through the locking hole of the lower centralizing body and the center hole of the lower centralizing body and is led out from the bell mouth of the lower centralizing body, and the second detonating cord is installed in the locking hole of the lower centralizing body and the center hole of the lower centralizing body.

[0010] Preferably, the upper centralizing body bell mouth and the lower centralizing body bell mouth are relatively distributed, the upper centralizing body main body length is greater than the lower centralizing body main body length, and the upper centralizing body joint and the lower centralizing body joint are both provided with external threads.

[0011] Preferably, both ends of the outer wall of the double male connector are provided with external threads; one end of the outer wall of the male and female connector is provided with a fixing through hole, the inner wall is provided with an internal thread, and the other end is provided with an external thread.

[0012] Preferably, the external thread at one end of the double male connector is connected to the internal thread of the male and female connector, the external thread at the other end of the double male connector is connected to the upper perforating gun, and the external thread of the male and female connector is connected to the lower perforating gun.

[0013] Preferably, double sealing rings are provided at the external threads of the double male connectors, double sealing rings are provided at the external threads of the male and female connectors, and the top screw passes through the fixed through hole.

[0014] (III) Beneficial effects: The oil pipe conveyed perforating gun inter-energy concentrated explosion transmission device provided by the present invention has a simple structure and abandons the original complex assembly structures such as explosion transmission tube protection tube and detonating cord locking assembly, making on-site construction operation more convenient and greatly improving the explosion transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a concentrated energy transmission device between perforating guns conveyed by a tubing according to an embodiment of the present invention; Figure 2 It is a schematic structural diagram of a perforating gun inter-perforating gun concentrated explosive transmission device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the upper straightening body in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a centralizing body according to an embodiment of the present invention; Figure 5 Schematic diagram of the structure of a C-type spring piece according to an embodiment of the present invention.

[0016] Among them, 1. double male connector; 2. male and female connector; 3. upper centralizing body; 4. lower centralizing body; 5. upper positioning plate; 6. lower positioning plate; 7. lower perforating gun; 8. upper perforating gun; 9-1. first detonating tube; 9-2. first detonating tube; 10-1. first detonating cord; 10-2. second detonating cord; 11. C-type shrapnel; 12. top screw; 13-1. upper centralizing body body; 13-2. lower centralizing body body; 14-1. upper centralizing body connector; 14-2. lower centralizing body connector; 15. top screw hole; 16-1. upper centralizing body bell mouth; 16-2. lower centralizing body bell mouth; 17-1. upper centralizing body locking hole; 17-2-lower centralizing body locking hole; 18-1. upper centralizing body center hole; 18-2. lower centralizing body center hole; 19. fixing through hole; 20. sealing ring. Implementation

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by "left", "right", "up", "down", "inside" and "outside" are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the energy-gathering explosion device between perforating guns transported by oil pipes according to an embodiment of the present invention. Figure 2 FIG. 1 is a schematic diagram of the structure of the inter-perforating gun concentrated explosive device according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the present invention provides an energy-gathering explosive device for perforating guns transported by oil pipes, comprising a double male joint 1, one end of the double male joint 1 is connected to an upper perforating gun 7, the other end of the double male joint 1 is connected to a male-female joint 2, and the male-female joint 2 is connected to a lower perforating gun 8; an upper centralizing body 3 is installed inside the double male joint 1, a lower centralizing body 4 is installed inside the male-female joint 2, a first detonating tube 9-1 and a first detonating cord 10-1 are installed inside the upper centralizing body 3, the first detonating tube 9-1 is connected to the first detonating cord 10-1, and the other end of the first detonating cord 10-1 is connected to the perforating bullet of the upper perforating gun 7, a second detonating tube 9-2 and a second detonating cord 10-2 are installed inside the lower centralizing body 4, the second detonating tube 9-2 is connected to the second detonating cord 10-2, and the other end of the second detonating cord 10-2 is connected to the perforating bullet of the lower perforating gun 8, the upper centralizing body 3 is connected to an upper positioning plate 5, and the lower centralizing body 4 is connected to a lower positioning plate 6.

[0020] Figure 3 FIG. 1 is a schematic diagram of the structure of the upper straightening body in an embodiment of the present invention. Figure 3 As shown, the upper straightening body 3 includes an upper straightening body main body 13-1, one end of the upper straightening body main body 13-1 is provided with an upper straightening body joint 14-1, the other end is provided with an upper straightening body bell mouth 16-1, the outer wall of the upper straightening body main body 13-1 is provided with a top screw hole 15, and the inner side of the upper straightening body main body 13-1 is provided with an upper straightening body locking hole 17-1 and an upper straightening body center hole 18-1.

[0021] Figure 4 Schematic diagram of the structure of the centralizing body according to an embodiment of the present invention. Figure 4As shown, the lower straightening body 4 includes a lower straightening body main body 13-2, one end of the lower straightening body main body 13-2 is provided with a lower straightening body joint 14-2, and the other end is provided with a lower straightening body bell mouth 16-2, the outer wall of the lower straightening body main body 13-2 is provided with a top screw hole 15, and the inner side of the lower straightening body main body 13-2 is provided with a lower straightening body locking hole 17-2 and a lower straightening body center hole 18-2.

[0022] In actual application, the upper straightening body locking hole 17-1 is connected to the upper straightening body center hole 18-1, the C-shaped spring piece 11 is installed in the upper straightening body locking hole 17-1, the top screw hole 15 is installed with the top screw 12, the top screw 12 is against the C-shaped spring piece 11, and the aperture of the upper straightening body locking hole 17-1 is larger than the aperture of the upper straightening body center hole 18-1; the lower straightening body locking hole 17-2 is connected to the lower straightening body center hole 18-2, the C-shaped spring piece 11 is installed in the lower straightening body locking hole 17-2, the top screw hole 15 is installed with the top screw 12, the top screw 12 is against the C-shaped spring piece 11, and the aperture of the lower straightening body locking hole 17-2 is larger than the aperture of the lower straightening body center hole 18-2.

[0023] It should be noted that the inner diameter of the locking hole 17-1 of the upper straightening body is larger than the inner diameter 18-1 of the center hole of the upper straightening body, and the inner diameter of the locking hole 17-2 of the lower straightening body is larger than the inner diameter of the center hole 18-2 of the lower straightening body. Therefore, whether in the upper straightening body 3 or the lower straightening body 4, the contact surface between the locking hole and the center hole forms a step shape, and a C-shaped spring piece 11 is installed in the locking hole, wherein the step can effectively prevent the C-shaped spring piece 11 from sliding out of the locking hole. At the same time, after the top screw 12 is installed through the top screw hole 15 of the upper straightening body 3 and the lower straightening body 4 respectively, the top screw 12 can squeeze the C-shaped spring piece 11 to further fix and lock the first detonating cord 10-1 and the second detonating cord 10-2.

[0024] In addition, after the detonating cord is passed through, the C-shaped shrapnel 11 can be tightened with the top screw 12. In this way, the original point contact is replaced by surface contact, which solves the problem of uneven density of the detonating cord due to excessive tightening. When connecting, the reserved length of the detonating cord can be arbitrarily adjusted within a certain length range, making the detonation transmission distance more easily controllable.

[0025] Figure 5 Schematic diagram of the structure of a C-type spring piece according to an embodiment of the present invention. Figure 5 As shown, in actual application, the C-shaped spring piece 11 is a one-piece structure. The C-shaped spring piece 11 is a side surface of an unclosed cylinder formed by surrounding a rectangular spring piece. The shape of the surrounding is similar to the letter "C" when viewed from the side, so it is named accordingly.

[0026] In the present detonation transmission device, one end of the first detonation transmission tube 9-1 passes through the upper centralizing body locking hole 17-1 and the upper centralizing body center hole 18-1, and is led out at the upper centralizing body bell mouth 16-1, and the first detonating cord 10-1 is installed in the upper centralizing body locking hole 17-1 and the upper centralizing body center hole 18-1; one end of the second detonation transmission tube 9-2 passes through the lower centralizing body locking hole 17-2 and the lower centralizing body center hole 18-2, and is led out at the lower centralizing body bell mouth 16-2, and the second detonating cord 10-2 is installed in the lower centralizing body locking hole 17-2 and the lower centralizing body center hole 18-2.

[0027] It should be noted that the upper centralizing body bell mouth 16-1 and the lower centralizing body bell mouth 16-2 are relatively distributed, the length of the upper centralizing body main body 13-1 is greater than the length of the lower centralizing body main body 13-2, and the upper centralizing body joint 14-1 and the lower centralizing body joint 14-2 are both provided with external threads.

[0028] In practical applications, the bell mouth 16-1 of the upper centralizing body and the bell mouth 16-2 of the lower centralizing body are both conical, which play a role in gathering the detonation energy generated by the detonating cord after the perforating gun is detonated, providing enough energy for the detonation of the next perforating gun, and realizing the function of energy gathering and detonation transmission between guns. In this detonation transmission device, since the detonation energy of the detonating cord is reduced due to the influence of the environment during the transmission process, the upper centralizing body 3 and the lower centralizing body 4 are both made of bakelite material with small energy absorption, and the spherical detonation energy transmission is considered. In order to increase the area of ​​the detonator tube contacting the detonation wave, and based on safety considerations, since the detonator tube cannot be exposed to the outside of the straightening body, the end face of the upper straightening body 3 or the lower straightening body 4 where the first detonator tube 9-1 and the second detonator tube 9-2 are connected is designed to be an inverted cone structure. At the same time, the detonation concentricity is further considered in the inner diameter design, so the diameter of the inverted cone end is 7mm, and the diameter of the other end is 10mm, which ensures its concentricity and allows the detonating cord to easily pass through the straightening body.

[0029] In addition, both the upper centralizing body joint 14 - 1 and the lower centralizing body joint 14 - 2 are provided with external threads. The upper centralizing body joint 14 - 1 is installed to the upper positioning plate 5 at the top of the lower perforating gun 7 , and the lower centralizing body joint 14 - 2 is installed to the lower positioning plate at the end of the upper perforating gun 8 .

[0030] In the explosion transmission device, both ends of the outer wall of the double male connector 1 are provided with external threads, one end of the outer wall of the male and female connector 2 is provided with a fixing through hole 19, the inner wall is provided with internal threads, and the other end is provided with external threads.

[0031] In actual application, the external thread at one end of the double male connector 1 is connected to the internal thread of the male and female connector 2, the external thread at the other end of the double male connector 1 is connected to the upper perforating gun 7, and the external thread of the male and female connector 2 is connected to the lower perforating gun 8. In addition, a double sealing ring 20 is provided at the external thread of the double male connector 1, and a double sealing ring 20 is provided at the external thread of the male and female connector 2. A fixing through hole 19 is provided on the outer wall of the internal thread, and a top screw passes through the fixing through hole 19. The connection between the double male connector 1 and the male and female connector 2 is fixed by the top screw to prevent accidental disengagement.

[0032] The oil pipe conveyed perforating gun inter-energy concentrated explosion transmission device provided by the present invention has a simple structure and abandons the original complex assembly structures such as explosion transmission tube protection tube and detonating cord locking assembly, making on-site construction operation more convenient and greatly improving the explosion transmission efficiency.

[0033] Combine the following Figures 1 to 5 The oil pipe conveying perforating gun inter-gun energy transmission device proposed by the present invention is further described in detail: In this embodiment, before the perforating operation is performed, the following process of the present invention can be combined with the perforating gun to form a perforating gun string.

[0034] First, install the two C-shaped spring pieces 11 into the upper centralizing body locking hole 17-1 and the upper centralizing body locking hole 17-2 respectively, extend the second detonating cord 10-2 with the second detonating tube 9-2 from the lower end of the upper perforating gun 8, and pass through the lower centralizing body locking hole 17-2, the lower centralizing body center hole 18-2 and the lower centralizing body bell mouth 16-2 in sequence, the second detonating tube 9-2 is flush with the end surface of the lower centralizing body bell mouth 16-2, the top screw 12 passes through the top screw hole 15, and squeezes the C-shaped spring piece 11 to ensure that the second detonating cord 10-2 is locked and cannot move back and forth, and then install the lower centralizing body joint 14-2 to the lower positioning plate 6 at the bottom end of the upper perforating gun 8.

[0035] Likewise, the upper centralizing body 3 is mounted to the top of the lower-stage perforating gun 7 in this manner.

[0036] When connecting the perforating guns, use a double male connector 1 to be sleeved onto the outside of the upper centralizing body 3, one end of which is connected to the top thread of the lower perforating gun 7, and the other end is flush with the end surface of the upper centralizing body bell mouth 16-1; use a male and female connector 2 to be sleeved onto the outside of the lower centralizing body 4 of the upper perforating gun 8, and the external thread end is connected to the bottom thread of the upper perforating gun 8; then the other end of the double male connector 1 is connected to the internal thread end of the male and female connector 1, and the top screw is fixed at the connection between the double male connector 1 and the male and female connector 2 through the fixing through hole 19 to achieve the connection between the perforating guns.

[0037] After the perforating gun begins to detonate, the second detonating cord 10-2 in the upper perforating gun 8 begins to deflagrate rapidly from the top of the upper perforating gun 8 along the second detonating cord 10-2, generating detonation energy, igniting the perforating bullets through which the detonating cord 10-2 passes, and realizing the detonation of the upper perforating gun 8. At the same time, the detonation energy quickly reaches the lower centralizing body 4 at the bottom of the upper perforating gun 8, and the detonation energy passes through the central hole 18-2 of the lower centralizing body, igniting the second detonator 9-2, and generating a detonation wave with greater energy again. The detonation energy gathers at the bell mouth 16-2 of the lower centralizing body to generate a focused energy airflow similar to the perforating bullet, and quickly impacts the bell mouth 16-1 of the upper centralizing body of the lower perforating gun 7, thereby igniting the first detonator 9-1 at the bell mouth 16-1 of the upper centralizing body of the lower perforating gun 7, generating huge detonation energy, and then igniting the first detonator 10-1, realizing the focused energy transmission process between the perforating guns. By analogy, the energy transfer between all guns in the perforating pipe string and the detonation process of the perforating gun are completed, and the perforating operation is completed.

[0038] In actual application, the device is connected in the double male joint and the double female joint through the upper and lower straightening bodies. The detonation energy generated by the deflagration of the detonating cord inside the lower straightening body of the upper perforating gun ignites the booster tube. The detonation energy of the booster tube is gathered at the conical bell mouth, generating a concentrated energy airflow along the axial direction, and quickly impacts the bell mouth of the upper straightening body of the lower perforating gun, thereby igniting the booster tube at the bell mouth of the upper straightening body of the lower perforating gun, realizing the concentrated energy explosion transmission function between the perforating guns, and avoiding the problem of failure of explosion transmission between the perforating guns due to gaps caused by the lack of contact between the booster tubes or eccentricity of the booster tubes.

[0039] In addition, the device proposes a locking hole structure of the straightening body. By installing a C-shaped spring piece and cooperating with the extrusion of the top screw, the iron sheet is tightened, which plays the function of fixing and locking the detonating cord to prevent the detonating cord from accidentally detaching from the straightening body. At the same time, the locking hole diameter is designed to be larger than the center hole to form a step shape on the contact surface, which prevents the elastic iron sheet from sliding and losing the function of fixing the detonating cord. In addition, the locking hole structure also has the function of straightening the detonating cord.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe-transmitted perforating gun inter-energy transmission device, characterized in that: include: A double male joint (1), one end of the double male joint (1) is connected to an upper perforating gun (7), the other end of the double male joint (1) is connected to a male-female joint (2), and the male-female joint (2) is connected to a lower perforating gun (8); an upper centralizing body (3) is installed inside the double male joint (1), a lower centralizing body (4) is installed inside the male-female joint (2), a first detonating tube (9-1) and a first detonating cord (10-1) are installed inside the upper centralizing body (3), the first detonating tube (9-1) is connected to a first detonating cord (10-1) The first detonating cord (10-1) is connected to a perforating bullet of an upper perforating gun (7) at the other end thereof; a second detonating tube (9-2) and a second detonating cord (10-2) are installed inside the lower centralizing body (4); the second detonating tube (9-2) is connected to the second detonating cord (10-2); the second detonating cord (10-2) is connected to a perforating bullet of a lower perforating gun (8); the upper centralizing body (3) is connected to an upper positioning plate (5); and the lower centralizing body (4) is connected to a lower positioning plate (6); The upper straightening body (3) comprises an upper straightening body main body (13-1), one end of the upper straightening body main body (13-1) is provided with an upper straightening body joint (14-1), the other end is provided with an upper straightening body bell mouth (16-1), the outer wall of the upper straightening body main body (13-1) is provided with a top screw hole (15), and the inner side of the upper straightening body main body (13-1) is provided with an upper straightening body locking hole (17-1) and an upper straightening body center hole (18-1); The lower centralizing body (4) comprises a lower centralizing body main body (13-2), one end of the lower centralizing body main body (13-2) is provided with a lower centralizing body joint (14-2), and the other end is provided with a lower centralizing body bell mouth (16-2), the outer wall of the lower centralizing body main body (13-2) is provided with a top screw hole (15), and the inner side of the lower centralizing body main body (13-2) is provided with a lower centralizing body locking hole (17-2) and a lower centralizing body center hole (18-2).

2. The oil pipe conveyed perforating gun inter-energy transmission device according to claim 1 is characterized in that: The upper straightening body locking hole (17-1) is connected to the upper straightening body center hole (18-1), a C-shaped spring piece (11) is installed in the upper straightening body locking hole (17-1), a top screw (12) is installed in the top screw hole (15), the top screw (12) is pressed against the C-shaped spring piece (11), and the aperture of the upper straightening body locking hole (17-1) is larger than the aperture of the upper straightening body center hole (18-1).

3. The oil pipe conveyed perforating gun inter-gun energy transmission device according to claim 1 is characterized in that: The lower straightening body locking hole (17-2) is connected to the lower straightening body center hole (18-2), a C-shaped spring piece (11) is installed in the lower straightening body locking hole (17-2), a top screw (12) is installed in the top screw hole (15), the top screw (12) is pressed against the C-shaped spring piece (11), and the aperture of the lower straightening body locking hole (17-2) is larger than the aperture of the lower straightening body center hole (18-2).

4. The oil pipe conveyed perforating gun inter-gun energy transmission device according to claim 2 is characterized in that: One end of the first detonator tube (9-1) passes through the upper centralizing body locking hole (17-1) and the upper centralizing body center hole (18-1), and is led out of the upper centralizing body bell mouth (16-1), and the first detonating cord (10-1) is installed in the upper centralizing body locking hole (17-1) and the upper centralizing body center hole (18-1).

5. The oil pipe conveyed perforating gun inter-gun energy transmission device according to claim 3 is characterized in that: One end of the second detonator tube (9-2) passes through the lower centralizing body locking hole (17-2) and the lower centralizing body center hole (18-2), and is led out of the lower centralizing body bell mouth (16-2), and the second detonating cord (10-2) is installed in the lower centralizing body locking hole (17-2) and the lower centralizing body center hole (18-2).

6. The oil pipe conveyed perforating gun inter-unit energy transfer device according to claim 1, characterized in that: The upper centralizing body bell mouth (16-1) and the lower centralizing body bell mouth (16-2) are relatively distributed, the upper centralizing body main body (13-1) is longer than the lower centralizing body main body (13-2), and the upper centralizing body joint (14-1) and the lower centralizing body joint (14-2) are both provided with external threads.

7. The oil pipe conveyed perforating gun inter-unit energy transfer device according to claim 1, characterized in that: The outer wall of the double male connector (1) is provided with external threads at both ends; the outer wall of the male and female connector (2) is provided with a fixing through hole (19) at one end, an inner wall is provided with internal threads, and the other end is provided with external threads.

8. The oil pipe conveyed perforating gun inter-gun energy transmission device according to claim 7 is characterized in that: The external thread at one end of the double male joint (1) is connected to the internal thread of the male and female joint (2), the external thread at the other end of the double male joint (1) is connected to the upper perforating gun (7), and the external thread of the male and female joint (2) is connected to the lower perforating gun (8).

9. The oil pipe conveyed perforating gun inter-gun energy transfer device according to claim 7, characterized in that: The double male connector (1) is provided with a double sealing ring (20) at the external thread, the male and female connector (2) is provided with a double sealing ring (20) at the external thread, and the top screw passes through the fixing through hole (19).

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