Seafloor seismic acquisition system

Abstract

The application relates to the technical field of seismic exploration, and provides a seabed seismic acquisition system, which comprises an acquisition station and an acquisition device. The acquisition device comprises a pressure cabin, a seismic detector arranged on the pressure cabin, the seismic detector being used for acquiring seismic reflection wave data, the pressure cabin having a first end and a second end opposite to each other, a first cone body, one end of the first cone body being connected with the first end of the pressure cabin, the other end of the first cone body extending away from the pressure cabin and being used for being inserted into the seabed, and a buffer reset assembly, two opposite ends of the buffer reset assembly being connected with the acquisition station and the pressure cabin respectively, the buffer reset assembly being used for making the pressure cabin and the acquisition station first approach each other and then move away from each other. The seabed seismic acquisition system can improve the coupling effect between the seabed seismic acquisition system and the seabed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seismic exploration, and particularly relates to a seabed seismic acquisition system. BACKGROUND

[0002] The marine seismic acquisition system is an important equipment for marine exploration, and plays a very important role in marine deep geoscience research, oil and gas exploration, marine geological disaster research and prediction. The marine seismic acquisition system is often arranged on the seabed and receives and converts seismic waves by coupling with the seabed. The coupling between the marine seismic acquisition system and the seabed directly affects the accuracy of seismic reflection wave data acquisition.

[0003] The traditional seabed seismic acquisition system cannot be effectively coupled with the seabed, so that it cannot well receive seismic waves, and therefore the accuracy of the acquired seismic wave data is not high. SUMMARY

[0004] The present application provides a seabed seismic acquisition system to improve the coupling effect between the seabed seismic acquisition system and the seabed, so that it can better receive seismic waves and improve the accuracy of seismic wave data acquisition.

[0005] The present application provides a seabed seismic acquisition system, which comprises an acquisition station and an acquisition device, wherein the acquisition device comprises:

[0006] A pressure cabin, wherein a seismic detector is arranged on the pressure cabin, the seismic detector is used for acquiring seismic reflection wave data, and the pressure cabin has opposite first and second ends;

[0007] A first vertebra, wherein one end of the first vertebra is connected with the first end of the pressure cabin, the other end of the first vertebra extends away from the pressure cabin and is used for inserting into the seabed; and

[0008] A buffer reset assembly, wherein opposite two ends of the buffer reset assembly are connected with the acquisition station and the pressure cabin respectively, and the buffer reset assembly is used for making the pressure cabin and the acquisition station first approach each other and then move away from each other.

[0009] In some embodiments, the buffer reset assembly comprises a sliding column, the second end of the pressure cabin is provided with a sliding cavity, one end of the sliding column is slidingly arranged in the sliding cavity, the sliding direction of the sliding column in the sliding cavity is parallel to the arrangement direction of the first and second ends, the other end of the sliding column is connected with the acquisition station, and hydraulic oil is further arranged in the sliding cavity and located on the side of the sliding column away from the acquisition station.

[0010] In some embodiments, the buffer reset assembly comprises an elastic telescopic member, opposite ends of the elastic telescopic member are connected to the second end of the pressure cabin and the collection station respectively, and a telescopic direction of the elastic telescopic member is parallel to the arrangement direction of the first end and the second end.

[0011] In some embodiments, the buffer reset assembly comprises:

[0012] A sliding column, the second end of the pressure cabin is provided with a sliding cavity, one end of the sliding column is slidingly arranged in the sliding cavity, a sliding direction of the sliding column in the sliding cavity is parallel to the arrangement direction of the first end and the second end, and the other end of the sliding column is connected to the collection station.

[0013] An elastic telescopic member, the elastic telescopic member is arranged between the collection station and the second end of the pressure cabin, a telescopic direction of the elastic telescopic member is parallel to the arrangement direction of the first end and the second end, and opposite ends of the elastic telescopic member abut against the collection station and the second end of the pressure cabin respectively.

[0014] In some embodiments, the sliding cavity is arranged as a stepped hole, the stepped hole comprises a first hole and a second hole, a hole diameter of the first hole is greater than a hole diameter of the second hole, and the sliding column is provided with a sliding block on an outer circumferential surface of one end of the sliding column close to the pressure cabin, the sliding block is slidingly arranged in the first hole.

[0015] In some embodiments, a plurality of sliding columns are arranged at intervals around an axis of the pressure cabin, and the elastic telescopic members are arranged in one-to-one correspondence with the sliding columns, and the elastic telescopic members are arranged as springs sleeved on the sliding columns.

[0016] In some embodiments, the collection device further comprises a plurality of second vertebrae, the plurality of second vertebrae are arranged at intervals around the first vertebra, one end of the second vertebra is connected to the first end of the pressure cabin, and the other end of the second vertebra extends away from the pressure cabin and is used for insertion into the seabed.

[0017] In some embodiments, the first end of the pressure cabin is provided with a first connecting hole, an axis of the first connecting hole is perpendicular to the arrangement direction of the first end and the second end, one end of the second vertebra close to the pressure cabin is provided with a second connecting hole, and the first end of the pressure cabin and the second vertebra are connected through a fastener penetrating in the first connecting hole and the second connecting hole.

[0018] In some embodiments, the first end of the pressure cabin is provided with a connecting block, the first connecting hole is arranged on the connecting block and penetrates through the connecting block; the second vertebra is provided with a groove near one end of the pressure cabin, the connecting block is inserted into the groove, and the second connecting hole is arranged on each of the two side walls of the groove and penetrates through the side wall of the groove.

[0019] In some embodiments, the subsea seismic acquisition system further comprises a snap ring arranged in the acquisition station, the snap ring is fixedly connected with the acquisition station, the snap ring is sleeved on the pressure cabin and is in sliding fit with the pressure cabin, and the sliding direction of the snap ring relative to the pressure cabin is parallel to the arrangement direction of the first end and the second end.

[0020] The subsea seismic acquisition system provided by the embodiments has the beneficial effects that: one end of the first vertebra is connected with the first end of the pressure cabin, the other end of the first vertebra extends away from the pressure cabin and is used for inserting into the seabed, and the opposite ends of the buffer reset assembly are connected with the acquisition station and the pressure cabin respectively, the buffer reset assembly is used for making the pressure cabin and the acquisition station first approach each other and then move away from each other, so that when the acquisition station contacts the seabed, if the seabed is soft, the first vertebra can be directly inserted into the seabed due to inertia and small resistance of the seabed, effective coupling between the acquisition station and the seabed is realized, and the accuracy of seismic data acquisition is improved, and if the seabed is hard, after the first vertebra contacts the seabed, the buffer reset assembly makes the pressure cabin first move towards the acquisition station to avoid damage of the subsea seismic acquisition system caused by a great impact, and then the buffer reset assembly makes the pressure cabin move away from the acquisition station to make the first vertebra move away from the sliding column and slowly insert into the hard seabed, effective coupling between the seismic acquisition system and the seabed is realized, and the accuracy of seismic data acquisition is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a structural schematic diagram of a subsea seismic acquisition system in one of the embodiments of the present application;

[0023] Figure 2 is Figure 1 is a structural exploded view of the subsea seismic acquisition system shown in the figure;

[0024] Figure 3 is Figure 2 a structural schematic diagram of the collecting device shown in

[0025] Figure 4 is Figure 3 a structural exploded view of the collecting device shown in

[0026] Figure 5 is Figure 4 a partial enlarged view of the A part of the collecting device shown in

[0027] Figure 6 is Figure 4 a schematic diagram of the internal structure of the sliding cavity of the collecting device shown in

[0028] The meanings of the marks in the figures are:

[0029] 100, a submarine seismic acquisition system; 10, an acquisition station; 20, a collecting device; 21, a pressure cabin; 211, a first end; 2111, a first connecting hole; 2112, a connecting block; 212, a second end; 213, a sliding cavity; 2131, a first hole; 2132, a second hole; 214, a containing cavity; 2141, an opening; 215, a cover plate; 216, a support; 22, a first vertebral body; 23, a sliding column; 231, a sliding block; 232, an external thread; 233, a nut; 24, an elastic expansion piece; 25, a second vertebral body; 251, a second connecting hole; 252, a groove; 26, a fastener; 30, a snap ring; 40, a counterweight plate; 41, a through hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings, i.e. embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0033] Reference throughout this application to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in additional embodiments," and so on, in various places throughout this specification are not necessarily all referring to the same embodiment, unless otherwise specified. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0034] To illustrate the technical solutions of the present application, the following will be described in conjunction with specific drawings and embodiments.

[0035] Please refer to Figures 1 to 4 The embodiment of the present application provides a seabed seismic acquisition system 100, which comprises an acquisition station 10 and an acquisition device 20. The acquisition station 10 often has a large weight. The acquisition device 20 comprises a pressure cabin 21, a first vertebral body 22 and a buffer reset assembly.

[0036] The pressure cabin 21 is provided with a seismic detector (not shown in the figure). The seismic detector is used for collecting seismic reflection wave data. The structure and working principle of the seismic detector are both mature prior art, and thus will not be described here. The pressure cabin 21 has a first end 211 and a second end 212.

[0037] One end of the first vertebral body 22 is connected with the first end 211 of the pressure cabin 21. The other end of the first vertebral body 22 extends away from the pressure cabin 21 and is used for being inserted into the seabed, so as to realize effective coupling between the seismic acquisition system and the seabed.

[0038] The buffer reset assembly is connected with the acquisition station 10 and the pressure cabin 21 at opposite ends, respectively. The buffer reset assembly is used for making the pressure cabin 21 and the acquisition station 10 first approach each other and then move away from each other.

[0039] The seabed seismic acquisition system 100 provided by the embodiment of the application is characterized in that one end of the first vertebral body 22 is connected with the first end 211 of the pressure cabin 21, the other end of the first vertebral body 22 extends away from the pressure cabin 21 and is used for inserting into the seabed, and the opposite two ends of the buffer reset assembly are connected with the acquisition station 10 and the pressure cabin 21 respectively, and the buffer reset assembly is used for making the pressure cabin 21 and the acquisition station 10 first approach each other and then move away from each other, so that when the acquisition station 10 contacts the seabed, if the seabed is soft, the first vertebral body 22 can be directly inserted into the seabed due to inertia and small resistance of the seabed, effective coupling between the acquisition station 10 and the seabed is realized, and the accuracy of seismic data acquisition is improved, and if the seabed is hard, after the first vertebral body 22 contacts the seabed, the buffer reset assembly makes the pressure cabin 21 first move towards the acquisition station 10 to avoid damage of the seabed seismic acquisition system 100 caused by a great impact, and then the buffer reset assembly makes the pressure cabin 21 move away from the acquisition station 10, so that the first vertebral body 22 moves away from the sliding column 23 and is slowly inserted into the hard seabed, effective coupling between the seismic acquisition system and the seabed is realized, and the accuracy of seismic data acquisition is improved.

[0040] Please continue to refer to Figures 1 to 4 In some embodiments, the buffer reset assembly includes the sliding column 23, the second end 212 of the pressure cabin 21 is provided with the sliding cavity 213, one end of the sliding column 23 is slidingly arranged in the sliding cavity 213, the sliding direction of the sliding column 23 in the sliding cavity 213 is parallel to the arrangement direction of the first end 211 and the second end 212, the other end of the sliding column 23 is connected with the acquisition station 10, and the hydraulic oil (not shown in the figure) is further arranged in the sliding cavity 213 and located on the side of the sliding column 23 away from the acquisition station 10.

[0041] By adopting the above scheme, when the acquisition station 10 contacts the seabed, if the seabed is soft, the first vertebral body 22 can be directly inserted into the seabed due to inertia and small resistance of the seabed, effective coupling between the acquisition station 10 and the seabed is realized, and the accuracy of seismic data acquisition is improved, and if the seabed is hard, after the first vertebral body 22 contacts the seabed, the sliding column 23 slides in the sliding cavity 213 towards the pressure cabin 21 and compresses the hydraulic oil, so that the pressure cabin 21 first moves towards the acquisition station 10, thereby avoiding damage of the seabed seismic acquisition system 100 caused by a great impact, and then the sliding column 23 slides in the sliding cavity 213 away from the pressure cabin 21 due to the hydraulic pressure generated by the hydraulic oil after being extruded, so that the pressure cabin 21 moves away from the acquisition station 10, thereby making the first vertebral body 22 move away from the sliding column 23 and be slowly inserted into the hard seabed, effective coupling between the seismic acquisition system and the seabed is realized, and the accuracy of seismic data acquisition is improved.

[0042] It can be understood that, due to the large weight of the acquisition station 10, the acquisition station 10 hardly moves during the process of contacting the acquisition station 10 to the seabed and inserting the first vertebra 22 into the soft and hard seabed.

[0043] It can be understood that the hydraulic oil can be a synthetic oil composed of a conventional base oil and additives, such as a deeply refined petroleum lubricating oil or a lubricating oil prepared by adding anti-wear and antioxidant additives to a synthetic lubricating oil.

[0044] Please continue to refer to Figures 1 to 4 In some embodiments, the buffer reset assembly includes an elastic expansion piece 24, opposite ends of the elastic expansion piece 24 are connected to the second end 212 of the pressure-bearing cabin 21 and the acquisition station 10 respectively, and the expansion direction of the elastic expansion piece 24 is parallel to the arrangement direction of the first end 211 and the second end 212.

[0045] By using the above scheme, when the acquisition station 10 contacts the seabed, if the seabed is soft, the first vertebra 22 can be directly inserted into the seabed due to inertia and small resistance of the seabed, thereby realizing effective coupling of the acquisition station 10 and the seabed and improving the accuracy of seismic data acquisition. If the seabed is hard, after the first vertebra 22 contacts the seabed, the elastic expansion piece 24 is compressed first to make the pressure-bearing cabin 21 move first towards the acquisition station 10, thereby avoiding damage to the seabed seismic acquisition system 100 after being subjected to a great impact. Then, the elastic expansion piece 24 is reset to be elongated to make the pressure-bearing cabin 21 move again away from the acquisition station 10, thereby making the first vertebra 22 move away from the sliding column 23 and slowly insert into the hard seabed, realizing effective coupling of the seismic acquisition system and the seabed, and improving the accuracy of seismic data acquisition.

[0046] It can be understood that, due to the large weight of the acquisition station 10, the acquisition station 10 hardly moves during the process of contacting the acquisition station 10 to the seabed and inserting the first vertebra 22 into the soft and hard seabed.

[0047] It can be understood that the elastic expansion piece 24 can be a spring, rubber or the like.

[0048] Please refer to Figures 1 to 4 The buffer reset assembly includes the sliding column 23 and the elastic expansion piece 24.

[0049] The second end 212 of the pressure-bearing cabin 21 is provided with a sliding cavity 213, one end of the sliding column 23 is slidingly arranged in the sliding cavity 213, the sliding direction of the sliding column 23 in the sliding cavity 213 is parallel to the arrangement direction of the first end 211 and the second end 212, and the other end of the sliding column 23 is connected to the acquisition station 10.

[0050] The elastic telescopic member 24 is arranged between the collecting station 10 and the second end 212 of the pressure cabin 21, the telescopic direction of the elastic telescopic member 24 is parallel to the arrangement direction of the first end 211 and the second end 212, and the opposite ends of the elastic telescopic member 24 abut against the collecting station 10 and the second end 212 of the pressure cabin 21 respectively.

[0051] Optionally, the two ends of the elastic telescopic member 24 are connected with the collecting station 10 and the second end 212 of the pressure cabin 21 respectively.

[0052] By using the above scheme, when the collecting station 10 contacts the seabed, if the seabed is soft, the first vertebra 22 can be directly inserted into the seabed due to small resistance and inertia, thereby realizing effective coupling between the collecting station 10 and the seabed and improving the accuracy of seismic data acquisition, and if the seabed is hard, after the first vertebra 22 contacts the seabed, the sliding column 23 will slide in the sliding cavity 213 towards the pressure cabin 21, the elastic telescopic member 24 is compressed under force, and the opposite ends of the elastic telescopic member 24 abut against the collecting station 10 and the second end 212 of the pressure cabin 21 respectively, thereby avoiding damage to the seabed seismic acquisition system 100 after being subjected to a great impact, and then under the elastic restoring force of the elastic telescopic member 24, the sliding column 23 will slide in the sliding cavity 213 away from the pressure cabin 21, thereby enabling the first vertebra 22 to move away from the sliding column 23 and slowly insert into the hard seabed, realizing effective coupling between the seismic acquisition system and the seabed and improving the accuracy of seismic data acquisition.

[0053] It can be understood that the seabed seismic acquisition system 100 provided by the embodiment of the present application can realize effective coupling with both the soft seabed and the hard seabed.

[0054] It can be understood that the seabed seismic acquisition system 100 provided by the embodiment of the present application can realize effective coupling with both the soft seabed and the hard seabed.

[0055] It can be understood that the collecting station 10 often has a large weight, and during the process of contacting the seabed and inserting the first vertebra 22 into the soft and hard seabed, the collecting station 10 hardly moves.

[0056] In other embodiments, the sliding connection mode of the sliding column 23 and the pressure cabin 21 is not limited to this, for example, a sliding groove can be arranged on the sliding column 23, and the second end 212 of the pressure cabin 21 is arranged to slide in the sliding groove.

[0057] Please refer to Figure 4 andFigure 6 In some embodiments, the sliding cavity 213 is arranged as a stepped hole, which includes a first hole 2131 and a second hole 2132, the aperture of the first hole 2131 is larger than that of the second hole 2132; the sliding block 231 is arranged on the outer circumferential surface of the end of the sliding column 23 close to the pressure cabin 21, and the sliding block 231 is slidingly arranged in the first hole 2131.

[0058] By adopting the above scheme, the sliding column 23 can be slidingly arranged in the sliding cavity 213 close to the end of the pressure cabin 21, and the sliding column 23 can also be prevented from being separated from the sliding cavity 213.

[0059] Optionally, the sliding block 231 can be arranged as an annular block, which is coaxially arranged with the sliding column 23.

[0060] Optionally, the sliding column 23 is slidingly connected with the second hole 2132, so as to better guide the sliding column 23.

[0061] Please refer to Figure 3 and Figure 4 In some embodiments, the sliding column 23 is arranged in multiple intervals around the axis of the pressure cabin 21, and the elastic expansion member 24 is arranged in one-to-one correspondence with the sliding column 23, and the elastic expansion member 24 is arranged as a spring sleeved on the sliding column 23.

[0062] By adopting the above scheme, the entire seabed seismic acquisition system 100 can have moderate rigidity and elasticity.

[0063] Optionally, the sliding column 23 is arranged in three uniform and spaced intervals around the axis of the pressure cabin 21, and the included angle between the adjacent two sliding columns 23 is 120°. In this way, the entire seabed seismic acquisition system 100 can have moderate rigidity and elasticity, and the eccentric movement of the seabed seismic acquisition system 100 can also be prevented.

[0064] Please refer to Figure 2 and Figure 3 In some embodiments, the acquisition device 20 further includes a plurality of second vertebral bodies 25, which are arranged in intervals around the first vertebral body 22, one end of the second vertebral body 25 is connected with the first end 211 of the pressure cabin 21, and the other end of the second vertebral body 25 extends away from the pressure cabin 21 and is used for insertion into the seabed.

[0065] By adopting the above scheme, the second vertebral body 25 can be used to increase the coupling degree of the seabed seismic acquisition system 100 and the seabed, and the plurality of second vertebral bodies 25 can be used to support the seabed seismic acquisition system 100, thereby improving the stability of the seabed seismic acquisition system 100 when collecting seismic data on the uneven seabed.

[0066] Optionally, the plurality of second vertebrae 25 are respectively rotationally connected with the first end 211 of the pressure cabin 21.

[0067] Please refer to Figure 4 and Figure 5 In some embodiments, the first end 211 of the pressure cabin 21 is provided with a first connecting hole 2111, an axis of the first connecting hole 2111 is perpendicular to the arrangement direction of the first end 211 and the second end 212, the second vertebrae 25 is provided with a second connecting hole 251 near one end of the pressure cabin 21, and the first end 211 of the pressure cabin 21 is connected with the second vertebrae 25 through a fastener 26 penetrating the first connecting hole 2111 and the second connecting hole 251.

[0068] By using the above scheme, the included angle between the second vertebrae 25 and the pressure cabin 21 can be adjusted according to the inclination angle of the seabed, so that the plurality of second vertebrae 25 can be inserted into the seabed, the coupling degree of the seabed seismic acquisition system 100 and the seabed is increased, and transportation is also facilitated.

[0069] Optionally, the fastener 26 can be a screw or a bolt.

[0070] Please refer to Figure 4 and Figure 5 In some embodiments, the first end 211 of the pressure cabin 21 is provided with a connecting block 2112, the first connecting hole 2111 is arranged on the connecting block 2112 and penetrates the connecting block 2112; the second vertebrae 25 is provided with a groove 252 near one end of the pressure cabin 21, the connecting block 2112 is inserted into the groove 252 in a gap, and each of the second connecting holes 251 is arranged on one of the two side walls of the groove 252 and penetrates the side wall of the groove 252 where the second connecting hole 251 is arranged.

[0071] By using the above scheme, the connection strength of the pressure cabin 21 and the second vertebrae 25 can be improved, and the second vertebrae 25 can be prevented from falling off the pressure cabin 21.

[0072] Please refer to Figure 3 and Figure 4 In some embodiments, the pressure cabin 21 has a containing cavity 214, the seismic detector is arranged in the containing cavity 214, the containing cavity 214 has an opening 2141, a top cover assembly is detachably arranged on the opening 2141, and the sliding column 23 is slidingly connected with the top cover assembly near one end of the pressure cabin 21.

[0073] By using the above scheme, the seismic detector and the pressure cabin 21 can be assembled together, and the seismic detector can be effectively protected.

[0074] Optionally, the top cover assembly comprises a cover plate 215 and a support 216, the cover plate 215 is arranged on the opening 2141, the cover plate 215 is connected with the pressure cabin 21 by screws, and the support 216 is arranged on the top cover, and the sliding cavity 213 is arranged on the side of the support 216 away from the pressure cabin 21.

[0075] Please refer to Figure 2 and Figure 4 In some embodiments, the sliding column 23 is provided with an external thread 232 at the end away from the pressure cabin 21, a threaded hole (not shown in the figure) is arranged on the collection station 10, the end of the sliding column 23 away from the pressure cabin 21 is connected with the threaded hole in a threaded fit, and a nut 233 is further sleeved on the sliding column 23, and the nut 233 is in threaded fit with the external thread 232.

[0076] By adopting the above scheme, when assembling the collection station 10 and the collection device 20, the end of the sliding column 23 away from the pressure cabin 21 can be connected with the threaded hole in a threaded fit first, the nut 233 is rotated first, so that the nut 233 abuts against the collection station 10, thereby improving the fastening degree of the connection between the collection station 10 and the collection device 20.

[0077] Please refer to Figure 2 and Figure 3 In some embodiments, the subsea seismic acquisition system 100 further comprises a snap ring 30 arranged in the collection station 10, the snap ring 30 is fixedly connected with the collection station 10, the snap ring 30 is sleeved on the pressure cabin 21 and is in sliding fit with the pressure cabin 21, and the sliding direction of the snap ring 30 relative to the pressure cabin 21 is parallel to the arrangement direction of the first end 211 and the second end 212.

[0078] By adopting the above scheme, when the second end 212 of the pressure cabin 21 slides towards or away from the sliding column 23, it can be more stable and will not tilt.

[0079] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the collection station 10 is provided with a counterweight plate 40, the counterweight plate 40 is provided with a through hole 41, the collection device 20 is arranged in the interior of the collection station 10, and the end of the first vertebra 22 away from the pressure cabin 21 passes through the through hole 41 and extends to the exterior of the collection station 10.

[0080] By adopting the above scheme, it can be ensured that the first vertebra 22 will not tilt so as to be accurately inserted into the seabed, and the collection station 10 can also better protect the collection device 20.

[0081] It can be understood that the end of the second vertebra 25 away from the pressure cabin 21 also passes through the through hole 41 and extends to the exterior of the collection station 10.

[0082] The above examples are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A submarine seismic acquisition system, characterized in that, It includes a data acquisition station and a data acquisition device, wherein the data acquisition device includes: A pressure chamber, on which a seismic detector is installed, the seismic detector is used to collect seismic reflection wave data, the pressure chamber has a first end and a second end opposite to each other; A first cone, one end of which is connected to the first end of the pressure chamber, and the other end of which extends away from the pressure chamber and is used for insertion into the seabed; and A buffer reset assembly, the two opposite ends of which are connected to the data acquisition station and the pressure chamber respectively, is used to make the pressure chamber and the data acquisition station first move closer to each other and then move further apart; The buffer reset component includes: A sliding column is provided at the second end of the pressure chamber, and one end of the sliding column is slidably disposed in the sliding cavity. The sliding direction of the sliding column and the sliding cavity is parallel to the arrangement direction of the first end and the second end. The other end of the sliding column is connected to the data acquisition station. An elastic telescopic member is disposed between the data acquisition station and the second end of the pressure chamber. The telescopic direction of the elastic telescopic member is parallel to the arrangement direction of the first end and the second end. The opposite ends of the elastic telescopic member abut against the data acquisition station and the second end of the pressure chamber, respectively. The collection device also includes a plurality of second cones, which are arranged at intervals around the first cone. One end of each second cone is connected to the first end of the pressure chamber, and the other end of each second cone extends away from the pressure chamber and is used to insert into the seabed. The submarine seismic acquisition system also includes a retaining ring installed in the acquisition station. The retaining ring is fixedly connected to the acquisition station and is sleeved on the pressure chamber and slides in cooperation with the pressure chamber. The relative sliding direction of the retaining ring and the pressure chamber is parallel to the arrangement direction of the first end and the second end.

2. The submarine seismic acquisition system according to claim 1, characterized in that, The buffer reset assembly can also be a sliding column. The second end of the pressure chamber is provided with a sliding cavity. One end of the sliding column is slidably disposed in the sliding cavity. The sliding direction of the sliding column and the sliding cavity is parallel to the arrangement direction of the first end and the second end. The other end of the sliding column is connected to the data acquisition station. Hydraulic oil is also provided in the sliding cavity. The hydraulic oil is located on the side of the sliding column away from the data acquisition station.

3. The submarine seismic acquisition system according to claim 1, characterized in that, The sliding cavity is configured as a stepped hole, which includes a first hole and a second hole, wherein the diameter of the first hole is larger than the diameter of the second hole; a sliding block is provided on the outer circumferential surface of the sliding column near the pressure chamber, and the sliding block is slidably disposed in the first hole.

4. The submarine seismic acquisition system according to claim 1, characterized in that, Multiple sliding columns are spaced apart around the axis of the pressure chamber, and elastic telescopic members are arranged in one-to-one correspondence with the sliding columns. The elastic telescopic members are springs sleeved on the sliding columns.

5. The submarine seismic acquisition system according to claim 1, characterized in that, The first end of the pressure chamber is provided with a first connecting hole, the axis of which is perpendicular to the arrangement direction of the first end and the second end. The end of the second cone near the pressure chamber is provided with a second connecting hole. The first end of the pressure chamber and the second cone are connected by fasteners passing through the first connecting hole and the second connecting hole.

6. The seabed seismic acquisition system according to claim 5, characterized in that, The first end of the pressure chamber is provided with a connecting block, and the first connecting hole is provided on the connecting block and penetrates through the connecting block; the second cone is provided with a groove at one end near the pressure chamber, the connecting block is inserted into the groove with gaps, and one second connecting hole is provided on each side wall of the groove and each second connecting hole penetrates through the side wall of the groove in which it is located.

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