Transverse wave exciting flat teeth and controllable source vibrator suitable for transverse wave controllable source

Abstract

The application provides a transverse wave exciting flat plate tooth suitable for a transverse wave controlled source and a controlled source vibrator, and the transverse wave exciting flat plate tooth suitable for the transverse wave controlled source comprises: a flat plate; a flat plate tooth base concentrically arranged on the lower surface of the flat plate; and a plurality of four-pyramid teeth fixed on the lower surface of the flat plate tooth base and uniformly distributed on the lower surface of the flat plate tooth base. The four-pyramid teeth are in contact with the ground, and the force state between the flat plate and the ground is the same when the flat plate vibrates forward and backward or vibrates left and right, so the contact properties in two directions are consistent, which can ensure that the force transmitted by the flat plate to the ground is consistent in two directions when the controlled source works, and can ensure that the excited seismic wave is consistent in two directions, thereby achieving the purpose of enhancing the stability of transverse wave signal excitation.

Description

Technical Field

[0001] This invention relates to the field of seismic exploration equipment, specifically to a shear wave excitation plate tooth and a controllable source vibrator suitable for shear wave controllable sources. Background Technology

[0002] In the field of oil and gas exploration, controlled seismic sources have begun to be widely used as excitation sources for artificial seismic signals. Shear wave controlled seismic sources are seismic signal excitation devices used to generate shear waves, and are an indispensable piece of equipment in geological exploration. Flat plate teeth are an important structure on the seismic signal excitation device used to generate shear wave signals. Currently, commonly used flat plate teeth have too small a contact area with the ground when generating shear waves, and can only generate shear waves in a single working direction. To generate shear waves in another working direction, the plate must first be completely lifted off the ground, changed direction, and then pressed back into the soil. This process reduces work efficiency and increases operating costs. Summary of the Invention

[0003] This invention provides a shear wave excitation plate tooth and a controllable source vibrator suitable for shear wave controllable sources, so as to enhance the stability of shear wave signal excitation.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a transverse wave excitation plate tooth suitable for a transverse wave controllable source, comprising: a plate; a plate tooth platform, concentrically arranged on the lower surface of the plate; and multiple square pyramidal teeth, fixed on the lower surface of the plate tooth platform and evenly distributed at intervals on the lower surface of the plate tooth platform.

[0005] Furthermore, each of the four-sided pyramidal teeth is a regular four-sided pyramidal tooth.

[0006] Furthermore, the base length of the four-sided pyramidal teeth ranges from 60 to 200 mm.

[0007] Furthermore, the tooth height range of the four-sided pyramidal teeth is 60-200mm.

[0008] Furthermore, multiple quadrangular pyramidal teeth are fixed to the lower surface of the flat tooth platform in a rectangular array.

[0009] Furthermore, multiple quadrangular pyramidal teeth are fixed to the lower surface of the flat tooth platform in a ring array.

[0010] Furthermore, the plate gear platform is detachably connected to the lower surface of the plate via bolts.

[0011] The present invention also provides a controllable source vibrator, including the above-mentioned transverse wave excitation plate teeth suitable for a controllable transverse wave source, wherein the controllable source vibrator is fixedly disposed on the upper surface of the plate and is capable of generating transverse waves.

[0012] Furthermore, the controllable vibration source vibrator includes: a circular support cylinder with an open upper end, wherein a first piston rod locking assembly and a second piston rod locking assembly are orthogonally distributed on the cylinder wall, and the lower end of the circular support cylinder is fixedly connected to a flat plate; a piston rod rotatably disposed inside the circular support cylinder, wherein both ends of the piston rod can be selectively connected to either the first piston rod locking assembly or the second piston rod locking assembly, and a radially extending outer flange is provided in the middle of the piston rod; a counterweight disposed inside the circular support cylinder, wherein the counterweight is provided with a radial through hole for passing through the piston rod, and the outer flange can divide the radial through hole into a first hydraulic chamber and a second hydraulic chamber, the counterweight can move relative to the piston rod along the axial direction of the piston rod, and the counterweight can rotate relative to the circular support cylinder together with the piston rod; and a servo valve assembly disposed on the top of the counterweight and communicating with both the first and second hydraulic chambers, wherein the servo valve assembly can drive the counterweight to move relative to the piston rod by changing the size of the first and second hydraulic chambers.

[0013] Furthermore, the controllable source vibrator also includes: a support frame and a rotating component. The support frame has an inverted U-shaped structure. The lower end of the support frame is fixedly connected to the upper end of the circular support cylinder. The upper end of the rotating component is fixedly connected to the upper end of the support frame. The lower end of the rotating component is fixedly connected to the counterweight.

[0014] The beneficial effect of this invention is that when the four-sided pyramidal teeth contact the ground, the force state between the plate and the ground is the same regardless of whether the plate vibrates back and forth or left and right. Therefore, the contact properties in the two directions are consistent, which ensures that when the controllable seismic source is working, the force transmitted from the plate to the ground is consistent in both directions, thereby ensuring that the excited seismic waves are consistent in both directions, and achieving the purpose of enhancing the stability of transverse wave signal excitation. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A bottom view;

[0018] Figure 3 This is a schematic diagram of another embodiment of the present invention.

[0019] The attached diagram is labeled as follows: 1. Flat plate; 2. Flat plate gear platform; 3. Four-sided pyramidal gear; 4. Circular support cylinder. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 and Figure 2 As shown, a shear wave excitation plate tooth suitable for a shear wave controllable source includes a plate 1, a plate tooth platform 2, and multiple square pyramidal teeth 3. The plate tooth platform 2 is concentrically arranged on the lower surface of the plate 1. The multiple square pyramidal teeth 3 are fixed to the lower surface of the plate tooth platform 2 and are evenly distributed at intervals on the lower surface of the plate tooth platform 2.

[0022] When the four-sided pyramid tooth 3 contacts the ground, the force state between the plate 1 and the ground is the same regardless of whether the plate 1 vibrates back and forth or left and right. Therefore, the contact properties in the two directions are consistent. This ensures that when the controllable source is working, the force transmitted from the plate 1 to the ground is consistent in both directions, thereby ensuring that the excited seismic waves are consistent in both directions and achieving the purpose of enhancing the stability of the transverse wave signal excitation.

[0023] In this embodiment, the square pyramid teeth 3 are all regular square pyramid teeth, that is, the base of the square pyramid teeth 3 is a square, and the sides are four isosceles triangles with the same structure. The length of the base of the square pyramid teeth 3 ranges from 60 to 200 mm. The tooth height of the square pyramid teeth 3 ranges from 60 to 200 mm.

[0024] The quadrangular pyramidal teeth 3 with the above structure can further ensure the stability of transverse wave signal excitation and ensure experimental results.

[0025] In this invention, multiple quadrangular pyramidal teeth 3 can be fixed to the lower surface of the flat tooth platform 2 in a rectangular array. For example... Figure 2 As shown, there are sixteen pyramidal teeth 3 arranged in a rectangular array, with four pyramidal teeth 3 in each row, for a total of four rows. This arrangement increases the overall contact area between the pyramidal teeth 3 and the ground, ensuring signal excitation stability.

[0026] Preferably, in Figure 3 In the illustrated embodiment, multiple quadrangular pyramidal teeth 3 are fixed to the lower surface of the flat plate tooth platform 2 in a ring array. In this embodiment, a ring structure formed by multiple layers of quadrangular pyramidal teeth 3 can be set on the lower surface of the same flat plate tooth platform 2, that is, multiple concentric rings are set, and their diameters increase sequentially to cover the entire lower surface of the flat plate tooth platform 2, so as to maximize the contact area between the quadrangular pyramidal teeth 3 and the ground.

[0027] It should be noted that the arrangement of each of the aforementioned quadrangular pyramid teeth 3 should ensure that one set of opposite faces is parallel to the front-to-back vibration direction, and the other set of opposite faces is parallel to the left-to-right vibration direction.

[0028] The flat gear plate 2 is detachably connected to the lower surface of the flat plate 1 via bolts. Using bolts to connect the flat gear plate 2 to the flat plate 1 facilitates disassembly when the four-sided pyramidal gear 3 malfunctions, thus improving maintenance efficiency.

[0029] The present invention also provides a controllable source vibrator, including the above-mentioned transverse wave excitation plate teeth suitable for a controllable transverse wave source, wherein the controllable source vibrator is fixedly disposed on the upper surface of the plate 1 and is capable of generating transverse waves.

[0030] Specifically, the controllable vibration source vibrator includes a circular support cylinder 4, a piston rod, a counterweight, and a servo valve assembly. The circular support cylinder 4 has a cylindrical structure with an open top. A first piston rod locking assembly and a second piston rod locking assembly are orthogonally distributed on the cylinder wall of the circular support cylinder 4. The lower end of the circular support cylinder 4 is fixedly connected to a plate 1. The piston rod is rotatably mounted inside the circular support cylinder 4. Both ends of the piston rod can be selectively connected to either the first piston rod locking assembly or the second piston rod locking assembly. A radially extending outer flange is provided in the middle of the piston rod. The counterweight is mounted inside the circular support cylinder 4 and has a radial through hole for passing through the piston rod. The outer flange can divide the radial through hole into a first hydraulic chamber and a second hydraulic chamber. The counterweight can move relative to the piston rod along the axial direction of the piston rod and can rotate relative to the circular support cylinder 4 together with the piston rod. The servo valve assembly is located at the top of the counterweight and communicates with both the first and second hydraulic chambers. The servo valve assembly can drive the counterweight to move relative to the piston rod by changing the size of the first and second hydraulic chambers.

[0031] The embodiments of the present invention can enable a controllable transverse wave source to excite two transverse waves with orthogonal vibration directions without changing the vehicle's orientation, thereby avoiding the need to adjust the vehicle's orientation during exploration and construction to excite transverse waves in different directions, thus reducing construction time and improving construction efficiency.

[0032] Furthermore, the controllable source vibrator also includes: a support frame and a rotating component. The support frame has an inverted U-shaped structure. The lower end of the support frame is fixedly connected to the upper end of the circular support cylinder 4. The upper end of the rotating component is fixedly connected to the upper end of the support frame, and the lower end of the rotating component is fixedly connected to the counterweight.

[0033] By setting up a rotating component and a support frame, the counterweight can be rotated relative to the support frame. This allows the vibration direction of the counterweight to be changed without altering the vehicle's orientation, thereby improving construction efficiency.

[0034] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: When the quadrangular pyramid tooth 3 is in contact with the ground, the force state between the plate 1 and the ground is the same regardless of whether the plate 1 vibrates back and forth or left and right. Therefore, the contact properties in the two directions are consistent, which ensures that when the controllable source is working, the force transmitted from the plate 1 to the ground is consistent in the two directions, thereby ensuring that the excited seismic waves are consistent in the two directions and achieving the purpose of enhancing the stability of the transverse wave signal excitation.

[0035] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this patent should still fall within the scope of this patent. Furthermore, the technical features, technical features and technical solutions, and technical solutions in this invention can be freely combined and used.

Claims

1. A controllable source vibrator, comprising a shear wave excitation plate tooth suitable for a shear wave controllable source, characterized in that, The shear wave excitation plate teeth suitable for shear wave controllable sources include: Flat plate (1); The plate gear platform (2) is concentrically set on the lower surface of the plate (1); Multiple quadrangular pyramidal teeth (3) are fixed on the lower surface of the flat tooth platform (2) and the multiple quadrangular pyramidal teeth (3) are evenly distributed at intervals on the lower surface of the flat tooth platform (2); Each of the four-sided pyramidal teeth (3) is a regular four-sided pyramidal tooth; Driven by the vibrator, the transverse wave excitation plate tooth can excite consistent seismic waves toward the ground in both front-back and left-right directions; The base length of the four-sided pyramidal tooth (3) ranges from 60 to 200 mm; The tooth height range of the four-sided pyramidal tooth (3) is 60-200mm; Multiple quadrangular pyramidal teeth (3) are fixed to the lower surface of the flat tooth platform (2) in a ring array; The plate gear platform (2) is detachably connected to the lower surface of the plate (1) by bolt connection; The controllable source vibrator is fixedly mounted on the upper surface of the plate (1) and is capable of generating transverse waves; The controllable vibration source vibrator includes: The circular support cylinder (4) has a cylindrical structure with an open top. The cylinder wall of the circular support cylinder (4) is provided with a first piston rod locking group and a second piston rod locking group that are orthogonally distributed. The lower end of the circular support cylinder (4) is fixedly connected to the plate (1). The piston rod is rotatably disposed inside the circular support cylinder (4). The two ends of the piston rod can be selectively connected to the first piston rod locking group or the second piston rod locking group. The middle part of the piston rod is provided with a radially extending outer flange. A counterweight is set inside a circular support cylinder (4). The counterweight is provided with a radial through hole for passing through the piston rod. The outer flange can divide the radial through hole into a first hydraulic chamber and a second hydraulic chamber. The counterweight can move relative to the piston rod along the axial direction of the piston rod, and the counterweight can rotate relative to the circular support cylinder (4) together with the piston rod. A servo valve assembly is disposed on top of the hammer and communicates with both the first hydraulic chamber and the second hydraulic chamber. The servo valve assembly is capable of driving the hammer to move relative to the piston rod by changing the size of the first hydraulic chamber and the second hydraulic chamber. The controllable source vibrator further includes: a support frame and a rotating component. The support frame has an inverted U-shaped structure. The lower end of the support frame is fixedly connected to the upper end of the circular support cylinder (4). The upper end of the rotating component is fixedly connected to the upper end of the support frame. The lower end of the rotating component is fixedly connected to the counterweight.

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