A zero-residual-gas pulse source device and method

Abstract

The application relates to the technical field of oil exploration equipment, and discloses a zero-residual gas pulse seismic source device and method, which comprises a cavity bottle body and an excitation line, and the bottom of the cavity bottle body is fixedly connected with a cavity bottom. The cavity material adopts low-carbon manganese alloy, the cavity bottle body and the cavity bottom are integrally formed through a melting process, and the possibility of irregular fragmentation of the cavity is reduced; the shape of a cavity blasting groove is cross-shaped, when being excited and detonated, the cavity bottom will be fragmented into petal shape along the cross-shaped blasting groove, the direction of blasting energy conduction is controllable, no fragments separated from the cavity will be generated, the gas pulse seismic source device is placed in a centralizer, the over-deformation of the petal-shaped cavity bottom after blasting can be limited, the cavity bottom can be prevented from being excessively destroyed to generate fragments, the seismic source device can be completely recycled, zero residual is realized, the direction of blasting energy conduction can be well controlled when being placed in the centralizer, and the exploration operation effect is improved.

Description

Technical Field

[0001] This invention relates to the field of petroleum exploration equipment technology, specifically to a zero-residue gas pulse source device and method. Background Technology

[0002] Gas pulse seismic sources are the fourth type of pulse seismic source, following explosive seismic sources, hydraulically controlled seismic sources, and electric spark seismic sources. As a new exploration method, they are being increasingly adopted, and the use of gas pulse seismic source device chambers, commonly used consumable equipment, is also growing. When used in water bodies, the chamber is placed at the bottom of the exploration well, at least 3 meters below the water surface.

[0003] When using a gas pulse source, first fill the cavity with a mixed gas and seal it. Then, lower the cavity along with the source device to the working position. Subsequently, connect high-voltage electricity to trigger the internal mixed gas to undergo a detonation reaction. The cavity will then completely collapse along the preset detonation groove, releasing the detonation energy. If a closed-shaped detonation groove is used, the fragments of the cavity after shattering will detach from the device and scatter in the working area.

[0004] The inventors of this application discovered in their research that the core defect of the above-mentioned prior art is that after the operation is completed, only the main body of the cavity and the supporting components can be lifted and recovered, while the separated metal fragments remain in the well, the bottom of the water or the drilling slurry and cannot be removed. Under long-term operation, a large number of metal fragments will accumulate in the operation area, thereby causing environmental pollution in the geological operation area. Summary of the Invention

[0005] This invention provides a zero-residue gas pulse source device and method, which solves the problem that metal fragments separated from the cavity are trapped downhole, at the bottom of the water or in the drilling slurry and cannot be removed, thus achieving the effect of full recovery and zero residue of cavity components.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a zero-residue gas pulse source device, comprising a cavity bottle body and an excitation wire, wherein a cavity bottom is fixedly connected to the bottom of the cavity bottle body, a cross-shaped burst groove is formed at the bottom of the cavity bottom, and a cavity interface is fixed to the top of the cavity bottle body. The cavity bottle body, cavity interface, and cavity bottom are integrally formed using a melting process. The cross-shaped burst groove is cross-shaped. The cavity bottle body, cavity interface, and cavity bottom are all made of low-carbon manganese alloy.

[0007] By adopting the above technical solution, when using a gas pulse seismic source for exploration, the mixed gas used to generate the detonation reaction produces only carbon dioxide and water as products, which will not pollute the environment. Furthermore, the application of cavity materials, cross-shaped blasting grooves, and centralizers not only prevents irregular fragmentation of the cavity during blasting, but also facilitates the complete recovery of the seismic source device and avoids the residue of metal fragments.

[0008] Preferably, a stabilizer is slidably connected to the outside of the cavity bottle body, a lifting ring is fixedly connected to the top of the stabilizer, and a cable is wound around the outside of the lifting ring.

[0009] Preferably, the top of the cavity interface is threaded with an air injection line, one end of which is connected to a valve, and the cavity interface has an internal thread.

[0010] Preferably, a method for using a zero-residue gas pulse source device, the method comprising the following steps: S1. First, make the excitation wire at the top of the cavity interface electrically connected to the power supply equipment. The ignition device includes an ignition device and an excitation wire. The ignition device is installed inside the joint of the gas injection line. The excitation wire is connected to the ignition device and leads out from the joint of the gas injection line. Thread the joint of the gas injection line into the cavity interface and make the cavity bottle body set inside the sleeve of the centralizer. The lower end of the cavity bottle body is 5cm higher than the lower end of the centralizer. The device assembly is completed. S2. Subsequently, the bottom of the centralizer is provided with a raised structure and an opening. The installed device is installed in the designated position using the raised structure at the bottom of the centralizer, and the central axis of the bottom of the cavity bottle is perpendicular to the position to be detonated, ensuring the integrity of the cross-shaped detonation groove. S3. Then, open the valve and inject the mixed combustible gas into the cavity through the gas injection line. The power supply equipment remotely provides high-voltage power to the ignition line. The ignition device inside the cavity interface receives the high-voltage power and the detonation device generates a high-speed particle stream, causing the mixed gas in the cavity bottle to undergo a detonation reaction, thus completing the device activation. S4. Finally, the bottom of the cavity at the bottom of the bottle body bursts open in a petal-like shape along the cross-shaped explosion groove, and the entire device is recovered using a cable after the detonation reaction of the device ends.

[0011] By adopting the above technical solution, the seismic source device can achieve directional blasting, and the direction of energy transmission during blasting can be well controlled, thereby improving the effectiveness and quality of exploration operations.

[0012] This invention provides a zero-residue gas pulse vibration source device and method. It has the following beneficial effects: 1. This invention uses a low-carbon manganese alloy for the cavity material, reducing the possibility of irregular fragmentation. The cavity's blasting groove is cross-shaped, and when activated, the bottom of the cavity will burst into petal-like shapes along the cross-shaped blasting groove. The direction of blast energy transmission is controllable, preventing the generation of fragments that separate from the cavity. Furthermore, the gas pulse source device is placed in a centralizer, which not only limits excessive deformation of the petal-shaped cavity bottom but also prevents excessive destruction of the cavity bottom, facilitating complete recovery of the source device and achieving zero residue. Placing it in a centralizer also allows for excellent control of the direction of detonation energy transmission, improving the effectiveness of exploration operations. Attached Figure Description

[0013] Figure 1 This is an overall perspective view of the present invention; Figure 2 This is a cross-sectional view of the centralizer of the present invention; Figure 3 This is a schematic diagram of the cavity interface of the present invention; Figure 4 This is a schematic diagram of the cavity bottle body of the present invention; Figure 5 This is an exploded view of the bottom of the cavity of the present invention.

[0014] The components include: 1. centralizer; 2. lifting ring; 3. excitation wire; 4. cable; 5. gas injection line; 6. valve; 7. cavity body; 8. cavity interface; 9. cavity bottom; and 10. cross-shaped bursting groove. Detailed Implementation

[0015] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Please see the appendix Figure 1 -Appendix Figure 5 This invention provides a zero-residue gas pulse source device, including a cavity bottle body 7 and an excitation wire 3. The bottom of the cavity bottle body 7 is fixedly connected to a cavity bottom 9. A cross-shaped burst groove 10 is formed at the bottom of the cavity bottom 9. A cavity interface 8 is fixed at the top of the cavity bottle body 7. The cavity bottle body 7, the cavity interface 8 and the cavity bottom 9 are integrally formed using a melting process. The cross-shaped burst groove 10 is cross-shaped. The cavity bottle body 7, the cavity interface 8 and the cavity bottom 9 are all made of low-carbon manganese alloy.

[0017] Specifically, the cavity is integrally formed using a melting process, resulting in high pressure resistance, meeting the requirements of the exploration industry for high-yield shock waves. The cavity material is selected from low-carbon manganese alloy, reducing its brittleness and minimizing the possibility of irregular fragmentation. The cross-shaped blasting groove 10 at the bottom 9 of the cavity is cross-shaped. When activated, the cavity will burst along the cross-shaped blasting groove 10 into petal-like shapes, without producing fragments that separate from the cavity. This facilitates the complete recovery of the seismic source device, achieving true zero residue and benefiting environmental protection. The application of the cross-shaped blasting groove 10 in the cavity allows for control over the direction of blast energy transmission, and the direction is relatively concentrated, effectively improving blast energy transmission and greatly enhancing the effectiveness and quality of exploration operations.

[0018] Please see the appendix Figure 1 and attached Figure 2 A stabilizer 1 is slidably connected to the outside of the bottle body 7. A lifting ring 2 is fixedly connected to the top of the stabilizer 1. A cable 4 is wrapped around the outside of the lifting ring 2.

[0019] Specifically, the use of the centralizer 1 can fix the cavity in the required position and shape, and can prevent the bottom 9 of the cavity from being damaged by the explosion and produce fragments. It can also limit the excessive deformation of the bottom 9 of the petal-shaped cavity. In addition, the upper end of the centralizer 1 is equipped with a lifting ring 2 for easy binding of the lifting cable 4, which facilitates the overall recovery of the seismic source device and leaves no residue at the explosion point.

[0020] Please see the appendix Figure 1 and attached Figure 2 The top of the cavity interface 8 is threaded with an air injection line 5, one end of which is connected to a valve 6. The cavity interface 8 has an internal thread.

[0021] Specifically, the mixed gas used in the detonation reaction produces only carbon dioxide and water as products, which do not pollute the environment.

[0022] A method of using a zero-residue gas pulse source device, the method comprising the following steps: S1. First, make the excitation wire 3 at the top of the cavity interface 8 electrically connected to the power supply equipment. The ignition device includes an ignition device and an excitation wire 3. The ignition device is installed inside the gas injection line 5. The excitation wire 3 is connected to the ignition device and leads out from the joint of the gas injection line 5. Thread the gas injection line 5 to the top of the cavity interface 8 and make the cavity bottle 7 installed inside the sleeve of the centralizer 1. The lower end of the cavity bottle 7 is 5cm higher than the lower end of the centralizer 1. The device assembly is completed. S2. Subsequently, the bottom of the centralizer 1 is provided with a raised structure and an opening. The installed device is installed in the designated position using the raised structure at the bottom of the centralizer 1, and the bottom of the cavity 9 at the bottom of the cavity bottle 7 is perpendicular to the position to be detonated, ensuring the integrity of the cross-shaped detonation groove 10. S3. Then, release valve 6 and inject mixed combustible gas into the centralizer 1 through gas injection line 5. The power supply equipment remotely provides high-voltage power to the excitation line 3. The ignition device inside the cavity interface 8 receives the high-voltage power and the detonation device generates a high-speed particle stream, causing the mixed gas in the cavity bottle 7 to undergo a detonation reaction, thus completing the device excitation. S4. Finally, the bottom of the cavity 9 at the bottom of the cavity bottle 7 bursts open in a petal-like shape along the cross-shaped explosion groove 10, and the entire device is recovered using the cable 4 after the device detonation reaction ends.

[0023] Specifically, the detonation device uses high-voltage electrical energy to generate a high-speed particle stream, causing the gas mixed inside the source device to undergo a detonation reaction. The excitation method is low-cost, safe, convenient, and environmentally friendly.

[0024] Work process: The device is activated by using high-voltage electrical energy to generate a high-speed particle stream, which causes the gas mixed in the cavity bottle 7 to undergo a detonation reaction. The whole process is safe and convenient to operate, and there are no harmful substances left behind. The mixed gas used and the reaction products are only carbon dioxide and water, which will not pollute the environment. The cavity is made entirely of low-carbon manganese alloy, which has high strength and toughness, and is not prone to fragmentation during explosion. After detonation, the cross-shaped explosion groove 10 at the bottom 9 of the cavity will open up in a petal-like shape. (Reference) Figure 5 The direction of blast energy transmission is controllable, and there are no fragments left behind. Before the cavity is activated, it is placed inside the centralizer 1 and can be well fixed in the required position and shape. When placed, the lower end of the cavity bottom 9 is 5cm higher than the lower end of the centralizer 1. This not only prevents the cavity bottom 9 from being damaged by the explosion and producing fragments, but also limits the excessive deformation of the petal-shaped cavity bottom 9. In addition, the upper end of the centralizer 1 has a lifting ring 2 for easy binding of lifting ropes, which facilitates the overall recovery of the seismic source device. By selecting the cavity material, applying the cross blast groove 10, and using the centralizer structure, not only are the problems of unrecoverable cavity fragments and large amounts of residue solved, but also the exploration operation effect is improved because the direction of blast energy transmission can be well controlled.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zero-residue gas pulse source device, comprising a cavity bottle (7) and an excitation wire (3), characterized in that, The bottom of the cavity bottle body (7) is fixedly connected to the cavity bottom (9), and the bottom of the cavity bottom (9) is provided with a cross-shaped burst groove (10). The top of the cavity bottle body (7) is fixed with a cavity interface (8). The cavity bottle body (7), cavity interface (8) and cavity bottom (9) are integrally formed by a melting process. The cross-shaped burst groove (10) is cross-shaped. The cavity bottle body (7), cavity interface (8) and cavity bottom (9) are all made of low-carbon manganese alloy.

2. The zero-residue gas pulse source device according to claim 1, characterized in that, A stabilizer (1) is slidably connected to the outside of the cavity bottle body (7), and a lifting ring (2) is fixedly connected to the top of the stabilizer (1). A cable (4) is wrapped around the outside of the lifting ring (2).

3. The zero-residue gas pulse source device according to claim 2, characterized in that, The top of the cavity interface (8) is threaded with an air injection line (5), one end of which is connected to a valve (6), and the cavity interface (8) has an internal thread.

4. A method of using a zero-residue gas pulse vibration source device, characterized in that, The method for a zero-residue gas pulse source device according to any one of claims 1-3 includes the following steps: S1. First, make the excitation wire (3) at the top of the cavity interface (8) electrically connected to the power supply equipment. The ignition device includes an ignition device and an excitation wire (3). The ignition device is installed inside the joint of the gas injection line (5). The excitation wire (3) is connected to the ignition device and leads out from the joint of the gas injection line (5). The joint of the gas injection line (5) is threaded into the cavity interface (8). The cavity bottle (7) is set inside the sleeve of the stabilizer (1), and the lower end of the cavity bottle (7) is 5cm higher than the lower end of the stabilizer (1). The device assembly is completed. S2. Subsequently, the bottom of the centralizer (1) is provided with a raised structure and an opening. The installed device is installed in the designated position using the raised structure at the bottom of the centralizer (1), and the central axis of the bottom of the cavity (9) of the cavity body (7) is perpendicular to the position to be detonated, so as to ensure the integrity of the cross-shaped detonation groove (10). S3. Then, release the valve (6) and inject the mixed combustible gas into the cavity using the gas injection line (5). The power supply equipment remotely provides high-voltage power to the excitation line (3). The ignition device inside the cavity interface (8) receives the high-voltage power, and the detonation device generates a high-speed particle stream, causing the mixed gas in the cavity bottle (7) to undergo a detonation reaction, thus completing the device excitation. S4. Finally, the bottom of the cavity (9) at the bottom of the cavity body (7) bursts open in a petal-like shape along the cross-shaped blast groove (10), and the entire device is recovered by using a cable (4) after the device detonation reaction ends.

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