A strike-slip fault system simulation device

Abstract

This invention discloses a strike-slip fault system simulation device, relating to the field of petroleum and natural gas geology. The invention includes a support platform and several plexiglass rods arranged side-by-side on the support platform. Longitudinal constraint components are arranged on the front and rear sides of each plexiglass rod, and transverse constraint components are arranged on the front and rear sides of each plexiglass rod. The longitudinal and transverse constraint components form a deformable parallelogram constraint component. A longitudinal drive mechanism is provided on the support platform to drive the parallelogram constraint component and induce longitudinal deformation of the plexiglass rods. This invention features a simple structure and reasonable design, and through the longitudinal drive mechanism, it can accurately simulate the strike-slip fault system within a craton, thus solving the problem of the inability to simulate the structure of strike-slip fault systems within a craton.

Description

Technical Field

[0001] This invention relates to the field of petroleum and natural gas geology, and more specifically to the field of strike-slip fault system simulation devices. Background Technology

[0002] For oil and gas exploration and development, compressional-torsional and extensional-torsional faults play a crucial role in controlling the formation of reservoirs and oil and gas traps in fault-controlled oil and gas reservoirs. However, how to simulate the formation process of compressional-torsional and extensional-torsional structural systems within a craton using physical simulation methods has always been a challenge and a key focus in oil and gas exploration.

[0003] Structural physics simulation devices are instruments used in geology to simulate the deformation of underground structures. They can simulate the morphology and deformation process of existing structures through physical means, which is of great significance for structural interpretation schemes and structural modeling of underground seismic data, and also plays an important role in geological scientific research and teaching. However, previous structural physics simulation devices and related patent technologies have not specifically included devices and related inventions for simulating compression-torsion and tension-torsion structural systems within cratons. Therefore, there is an urgent need to invent a physical simulation device for compression-torsion and tension-torsion structural systems to simulate the rationality of underground compression-torsion and tension-torsion structural systems and understand their structural deformation formation process. This is crucial for reservoir development and trap identification in fault-controlled oil and gas reservoirs in oil and gas exploration, as well as for geological understanding of the formation mechanism of compression-torsion and tension-torsion structural systems within cratons.

[0004] Existing patents for simulating compression-torsion and tension-torsion structures mainly concern the development process of a single pure strike-slip fault. These include patents with application number "CN201321088470.0" entitled "Experimental Device for Physical Simulation of Strike-Slip Fault Structures"; "CN201911037799.0" entitled "A Loading Device and Test Method for Bidirectional Loading of Indoor Strike-Slip Faults"; and "CN201210200464.1" entitled "A Simulation Device and Simulation Test Method for Pressure-Applied Strike-Slip Fault Displacement." These patented devices only simulate single pure strike-slip faults and do not simulate the compression-torsion and tension-torsion structural systems within cratons. Existing structural physics simulation devices do not have dedicated physical model devices for simulating compression-torsion and tension-torsion structural deformation. Therefore, none of the existing inventions address how to simulate underground geological conditions to reconstruct the formation process of compressional-torsional and tensional tectonic systems within a craton, nor do they address inventing a physical simulation device to specifically simulate the deformation of intraplate strike-slip fault systems. Thus, currently, no relevant physical simulation device has been invented to simulate intraplate strike-slip fault systems. Summary of the Invention

[0005] The purpose of this invention is to provide a simulation device for strike-slip fault systems, in order to solve the problem that existing craton internal compression-torsion and tension-torsion tectonic systems cannot be simulated.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0007] A strike-slip fault system simulation device includes a support platform and several plexiglass rods arranged side by side on the support platform. The plexiglass rods are provided with longitudinal constraint components on their front and rear sides and transverse constraint components on their left and right sides. The longitudinal constraint components and the transverse constraint components form a deformable parallelogram constraint component. The support platform is provided with a longitudinal drive mechanism for driving the parallelogram constraint component to cause the several plexiglass rods to deform longitudinally.

[0008] Furthermore, the longitudinal driving mechanism includes a movable base and a fixed base arranged side by side on the support platform and in edge contact, a driving mechanism for driving the movable base to move longitudinally, a number of plexiglass rods arranged in two equal parts side by side on the movable base and the fixed base, and parallelogram constraint components correspondingly arranged on the movable base and the fixed base.

[0009] Furthermore, the number of the acrylic rods is 60, each acrylic rod is a quadrangular prism with a diameter of 0.5 x 0.5 cm and a length of 60 cm. 30 acrylic rods are arranged in a longitudinal parallel manner on a movable base, and the other 30 acrylic rods are arranged in a longitudinal parallel manner on a fixed base.

[0010] Furthermore, the longitudinal constraint assembly includes longitudinal constraint strips respectively fixedly disposed on a movable base and a fixed base. The longitudinal constraint strips are used to define the longitudinal positions of a plurality of plexiglass rods. The longitudinal constraint strips of the movable base are provided with an inner longitudinal upper baffle, and the longitudinal constraint strips of the fixed base are provided with an outer longitudinal upper baffle.

[0011] Furthermore, both ends of the inner longitudinal upper baffle are fixed to the movable base by rivets and connecting wooden blocks, and both ends of the outer longitudinal upper baffle are fixed to the fixed base by rivets and connecting wooden blocks.

[0012] Furthermore, the lateral constraint assembly includes a left lateral constraint strip and a right lateral constraint strip located on the left and right sides of several plexiglass rods, both passing through the inner and outer longitudinal upper baffles. The inner sides of the left lateral constraint strip and the right lateral constraint strip both pass through the inner longitudinal upper baffle and are hinged to the movable base, while the outer sides of the left lateral constraint strip and the right lateral constraint strip both pass through the outer longitudinal upper baffle and are slidably connected to the fixed base.

[0013] Furthermore, both the inner and outer longitudinal upper baffles are provided with a central slot at the bottom, which is the same height and length as the plexiglass rod and is used to accommodate the corresponding longitudinal constraint strip. Two side slots are provided on both sides of the central slot and communicate with the central slot. The two side slots cooperate with the corresponding left and right transverse constraint strips, respectively. The length of the longitudinal constraint strip is less than the length of the central slot and the longitudinal constraint strip is located in the center of the central slot. Gaps are left between the left and right ends of the longitudinal constraint strip and the left and right transverse constraint strips, respectively, and the gaps are filled with modeling clay.

[0014] Furthermore, the inner longitudinal baffle is provided with an inner groove located above the central slot for the transverse extrusion mechanism to pass through.

[0015] Furthermore, both the movable base and the fixed base are square blocks of the same size with their long sides in contact.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention discloses a simulation device for strike-slip fault systems. Strike-slip fault systems within cratons exhibit weak deformation, making it difficult to distinguish between strike-slip faults and basement-involved reverse or normal faults. Physical simulation is needed to clarify the formation mechanism and process of strike-slip fault systems within cratons. However, currently, there is no dedicated physical simulation device for simulating strike-slip fault systems within cratons. Therefore, the formation process and mechanism of strike-slip fault systems within cratons remain unclear. This invention designs a dedicated physical simulation device for simulating strike-slip fault systems within cratons to solve the problem of the inability to simulate the structure of strike-slip fracture systems within cratons. Attached Figure Description

[0018] Figure 1 This is a perspective view of a physical simulation device for compression-torsion and tension-torsion structural systems;

[0019] Figure 2 This is a schematic diagram of the structure of the outer longitudinal upper baffle;

[0020] Figure 3 It is the base of the experimental apparatus in its undeformed state;

[0021] Figure 4 It is the cross-section of the undeformed simulation device;

[0022] Figure 5 yes Figure 1 The left view;

[0023] Reference numerals: 1-Supporting platform, 2-Outer longitudinal upper baffle, 2-1-Central groove, 2-2-Side groove, 3-Longitudinal constraint strip, 4-Clay, 5-Right transverse constraint strip, 6-Connecting wooden block, 7-Left transverse constraint strip, 8-Rivet, 9-Inner longitudinal upper baffle, 10-Modible base, 11-Acrylic rod, 12-Fixed base, 13-Drive mechanism. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0028] Example 1

[0029] like Figures 1 to 5As shown, this embodiment provides a strike-slip fault system simulation device, including a support platform 1 and several plexiglass rods 11 arranged side by side on the support platform 1. The plexiglass rods 11 are provided with longitudinal constraint components on their front and rear sides and transverse constraint components on their left and right sides. The longitudinal constraint components and the transverse constraint components form a deformable parallelogram constraint component. The support platform 1 is provided with a longitudinal driving mechanism for driving the parallelogram constraint component to cause the several plexiglass rods 11 to deform longitudinally. The support platform 1 is also provided with a transverse extrusion mechanism that can transversely extrude the several plexiglass rods 11.

[0030] In this embodiment, fault-controlled oil and gas reservoirs are crucial for oil and gas exploration and development. These reservoirs feature well-developed strike-slip fault systems within the craton. However, previous strike-slip fault simulation devices primarily simulated the development of individual strike-slip faults, lacking a dedicated physical simulation device for strike-slip fault systems within a craton. Consequently, the formation process and mechanism of strike-slip fault systems within a craton remain unclear, limiting the study of reservoir formation and well location targeting in fault-controlled oil and gas reservoirs. This invention designs a physical simulation device specifically for simulating strike-slip fault systems within a craton, addressing the problem of the inability to simulate these systems.

[0031] Example 2

[0032] This embodiment is a further optimization based on Embodiment 1, specifically:

[0033] The longitudinal drive mechanism includes a movable base 10 and a fixed base 12 arranged side by side on the support platform 1 and in edge contact, and a drive mechanism 13 for driving the movable base 10 to move longitudinally. The drive mechanism 13 is a screw and nut drive mechanism. Several plexiglass rods 11 are arranged in two equal parts side by side on the movable base 10 and the fixed base 12. Parallelogram constraint components are correspondingly arranged on the movable base 10 and the fixed base 12.

[0034] The number of the acrylic rods 11 is 60. Each acrylic rod 11 is a quadrangular prism with a diameter of 0.5 x 0.5 cm and a length of 60 cm. 30 acrylic rods 11 are arranged in a longitudinal parallel manner on the movable base 10, and the other 30 acrylic rods 11 are arranged in a longitudinal parallel manner on the fixed base 12.

[0035] The longitudinal constraint assembly includes longitudinal constraint strips 3 respectively fixedly mounted on the movable base 10 and the fixed base 12. The longitudinal constraint strips 3 are used to define the longitudinal positions of a plurality of plexiglass rods 11. The longitudinal constraint strips 3 of the movable base 10 are provided with an inner longitudinal upper baffle 9, and the longitudinal constraint strips 3 of the fixed base 12 are provided with an outer longitudinal upper baffle 2.

[0036] Both ends of the inner longitudinal upper baffle 9 are fixed to the movable base 10 by rivets 8 and connecting wooden blocks 6, and both ends of the outer longitudinal upper baffle 2 are fixed to the fixed base 12 by rivets 8 and connecting wooden blocks 6.

[0037] The lateral constraint assembly includes a left lateral constraint bar 7 and a right lateral constraint bar 5 located on the left and right sides of several plexiglass rods 11, both passing through the inner longitudinal upper baffle 9 and the outer longitudinal upper baffle 2. The inner sides of the left lateral constraint bar 7 and the right lateral constraint bar 5 pass through the inner longitudinal upper baffle 9 and are hinged to the movable base 10. The outer sides of the left lateral constraint bar 7 and the right lateral constraint bar 5 pass through the outer longitudinal upper baffle 2 and are slidably connected to the fixed base 12.

[0038] Both the inner longitudinal upper baffle 9 and the outer longitudinal upper baffle 2 have a central slot 2-1 at their bottom, which is the same height and length as the plexiglass rod 11 and is used to accommodate the corresponding longitudinal constraint strip 3. Two side slots 2-2 are provided on both sides of the central slot 2-1 and communicate with it. The two side slots 2-2 respectively cooperate with the corresponding left transverse constraint strip 7 and right transverse constraint strip 5. The length of the longitudinal constraint strip 3 is less than the length of the central slot 2-1, and the longitudinal constraint strip 3 is located in the center of the central slot 2-1. Gaps are left between the left and right ends of the longitudinal constraint strip 3 and the left and right transverse constraint strips 7 and 5, respectively, and these gaps are filled with modeling clay 4. The inner side of the central slot is 60cm long, the same length as the plexiglass rod 11, and holds the longitudinal constraint strip. The longitudinal constraint strip is 53cm long and located in the middle of the inner side of the slot. After installation, there are 3.5cm gaps on both sides between the longitudinal constraint strip and the transverse constraint strip, which are filled with modeling clay 4. The width of the side slots 2-2 is 1cm.

[0039] The inner longitudinal baffle 9 is provided with an inner groove located above the central slot 2-1, through which the transverse extrusion mechanism passes. The inner groove is 40cm long and 2cm wide.

[0040] The movable base 10 and the fixed base 12 are both square blocks of the same size with their long sides touching. The movable base 10 and the fixed base 12 have the same length and width, both being 80cm long and 25cm wide.

Claims

1. A simulation device for strike-slip fault systems, characterized in that, Includes a support platform (1) and several plexiglass rods (11) arranged side by side on the support platform (1). The plexiglass rods (11) are provided with longitudinal constraint components on the front and rear sides and transverse constraint components on the left and right sides. The longitudinal constraint components and transverse constraint components form a deformable parallelogram constraint component. The support platform (1) is provided with a longitudinal drive mechanism for driving the parallelogram constraint component to cause the several plexiglass rods (11) to deform longitudinally. The longitudinal drive mechanism includes a movable base (10) and a fixed base (12) arranged side by side on the support platform (1) and in edge contact, a drive mechanism (13) for driving the movable base (10) to move longitudinally, a number of plexiglass rods (11) arranged in two equal parts side by side on the movable base (10) and the fixed base (12), and parallelogram constraint components correspondingly arranged on the movable base (10) and the fixed base (12); The longitudinal constraint assembly includes longitudinal constraint strips (3) fixedly mounted on a movable base (10) and a fixed base (12), respectively. The longitudinal constraint strips (3) are used to define the longitudinal positions of a plurality of plexiglass rods (11). An inner longitudinal upper baffle (9) is provided on the longitudinal constraint strips (3) of the movable base (10), and an outer longitudinal upper baffle (2) is provided on the longitudinal constraint strips (3) of the fixed base (12). The lateral constraint assembly includes a left lateral constraint strip (7) and a right lateral constraint strip (5) located on the left and right sides of several plexiglass rods (11), both passing through the inner longitudinal upper baffle (9) and the outer longitudinal upper baffle (2). The inner sides of the left lateral constraint strip (7) and the right lateral constraint strip (5) pass through the inner longitudinal upper baffle (9) and are hinged to the movable base (10). The outer sides of the left lateral constraint strip (7) and the right lateral constraint strip (5) pass through the outer longitudinal upper baffle (2) and are slidably connected to the fixed base (12).

2. The strike-slip fault system simulation device according to claim 1, characterized in that, The number of the plexiglass rods (11) is 60, and each plexiglass rod (11) is a quadrangular prism with a diameter of 0.5 x 0.5 cm and a length of 60 cm.

3. The strike-slip fault system simulation device according to claim 2, characterized in that, Thirty acrylic rods (11) are arranged in a longitudinal parallel manner on a movable base (10), and another 30 acrylic rods (11) are arranged in a longitudinal parallel manner on a fixed base (12).

4. The strike-slip fault system simulation device according to claim 1, characterized in that, Both ends of the inner longitudinal upper baffle (9) are fixed to the movable base (10) by rivets and connecting wooden blocks (6), and both ends of the outer longitudinal upper baffle (2) are fixed to the fixed base (12) by rivets and connecting wooden blocks (6).

5. The strike-slip fault system simulation device according to claim 1, characterized in that, The bottom of the inner longitudinal upper baffle (9) and the outer longitudinal upper baffle (2) are provided with a central slot (2-1) of the same height and length as the plexiglass rod (11) and used to accommodate the corresponding longitudinal constraint strip (3). Two side slots (2-2) are provided on both sides of the central slot (2-1) and connected to the central slot (2-1). The two side slots (2-2) are respectively matched with the corresponding left transverse constraint strip (7) and right transverse constraint strip (5). The length of the longitudinal constraint strip (3) is less than the length of the central slot (2-1) and the longitudinal constraint strip (3) is located in the center of the central slot (2-1). There are gaps between the left and right ends of the longitudinal constraint strip (3) and the left transverse constraint strip (7) and the right transverse constraint strip (5), respectively. The gaps are filled with modeling clay.

6. The strike-slip fault system simulation device according to claim 5, characterized in that, The inner longitudinal upper baffle (9) is provided with an inner groove located above the central slot (2-1) for the transverse extrusion mechanism to pass through.

7. The strike-slip fault system simulation device according to claim 1, characterized in that, The movable base (10) and the fixed base (12) are both square blocks of the same size with their long sides in contact.

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