Shale sample holder

Abstract

The invention discloses a shale sample holder. The shale sample holder comprises a holder base and a clamping mechanism, wherein the holder base is used for containing a shale sample, the clamping mechanism is used for adjusting the position of the shale sample and clamping the shale sample, and through pipe connecting ports are installed on the outer walls of the two sides of the holder base in a penetrating mode. The clamping mechanism is provided with two sets of sliding rods, two sets of rubber heads and multiple sets of rubber balls, when the edge of a shale sample is uneven, the sliding degrees of the two sets of sliding rods are different, the two sets of sliding rods extrude the rubber balls on the side walls, the positions among the multiple sets of rubber balls move, and flexible clamping of the shale sample is achieved; the possibility that the edge of the shale sample is collided and damaged is reduced, the sample is firmly clamped, and displacement of the sample in the experiment process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of shale sample testing, and particularly to a shale sample holder. Background Art

[0002] Core refers to the downhole rock taken up by a coring tool during the drilling process, which can be used to study lithology, physical properties, and oil-bearing properties. A core holder is a device used to hold, protect a rock sample, and seal the cylindrical surface or end face when measuring the seepage characteristics of a rock sample or conducting a displacement experiment in a laboratory. The end face generally reserves an end face for fluid inlet and outlet. By clamping a core body ground into a cylindrical or rectangular shape with a core holder, a displacement experiment can be carried out inside the core body to detect the porosity inside the core, and then determine the fluid flow capacity inside the core. However, due to the irregular shape of the core sample and the large brittleness and fragility of the core sample, the clamping is not stable, and displacement is likely to occur during the experiment. Summary of the Invention

[0003] The purpose of the present invention is to provide a shale sample holder, which realizes flexible clamping of the shale sample by setting a flexible elastic member.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: The present invention provides a shale sample holder, including a holder base and a clamping mechanism; The holder base is used to accommodate the shale sample; The clamping mechanism is used to adjust the position of the shale sample and clamp the shale sample; Both outer walls on two sides of the holder base are penetrated and installed with through-tube connectors.

[0005] Further, the clamping mechanism includes a sliding block, a sliding block driving mechanism, and a rubber plate; The sliding block is located inside the holder base, and two sides of the sliding block are respectively slidably connected to the inner walls on two sides of the holder base; a sliding rod is arranged at the end of the sliding block; One end of the sliding block driving mechanism is connected to the sliding block, and the other end penetrates and extends to the outside of the holder base; The sliding block driving mechanism is used to drive the sliding block to drive the shale sample to slide inside the holder base, so that the sliding rod and the rubber plate respectively abut against two sides of the shale sample to clamp the shale sample; The rubber plate is fixedly installed on the inner wall of the holder base on the opposite side of the sliding block.

[0006] Further, the sliding block driving mechanism includes a threaded seat and a threaded rod; The threaded seat is disposed through one end of the gripper base, and a threaded rod is threadedly connected inside the threaded seat. One end of the threaded rod located inside the gripper base is connected to a sliding block.

[0007] Further, an annular groove is formed inside the sliding block, and a plurality of groups of rubber balls are arranged inside the annular groove. The outer wall of the rubber ball is in contact with the inner wall of the annular groove.

[0008] Further, every two adjacent groups of the rubber balls are in contact with each other.

[0009] Further, a sliding rod is provided at each end of the annular groove; the rubber balls at the ends are in contact with the sliding rods.

[0010] Further, rubber heads are fixedly installed at the ends of the two sliding rods.

[0011] Further, two groups of springs are fixedly installed on the inner wall of the gripper base on the opposite side of the sliding block, and rubber plates are fixedly installed at the ends of the two groups of springs.

[0012] Further, a gripper top cover is movably installed on the top of the gripper base.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, by providing two groups of sliding rods, two groups of rubber heads and a plurality of groups of rubber balls, the two groups of rubber heads are deformed under the pressure of the shale sample from left to right, and drive the two groups of sliding rods to move to the right, so that the two groups of sliding rods both slide to the right inside the sliding block. Since the edges of the shale sample are uneven, the sliding degrees of the two groups of sliding rods are not the same. The two groups of sliding rods squeeze the rubber balls on the side walls, and the plurality of groups of rubber balls squeeze each other, and the positions between the plurality of groups of rubber balls move, realizing flexible clamping of the shale sample, reducing the possibility of edge collision damage of the shale sample, and firmly clamping the sample to prevent the sample from displacing during the experiment.

[0014] In the present invention, by providing two groups of rubber plates and two groups of springs, since the side walls of the sample are uneven, the force directions of the two groups of rubber plates and the two groups of springs are different, and the contact area with the outer wall of the shale is larger, the clamping of the sample is more firm, and it is not easy to cause corner collision damage to the shale sample, ensuring the accuracy of the data when measuring the weight and volume of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic perspective view of a shale sample gripper provided by an embodiment of the present invention; Figure 2 is a sectional perspective view of a shale sample gripper provided by an embodiment of the present invention; Figure 3A structural top view of a shale sample holder provided by an embodiment of the present invention; Figure 4 A three-dimensional structural sectional view of a clamping mechanism in a shale sample holder provided by an embodiment of the present invention.

[0016] In the figure: 1, the holder base; 2, the holder top cover; 3, the through-pipe connection port; 4, the threaded seat; 5, the threaded rod; 6, the sliding block; 7, the sliding rod; 8, the rubber head; 9, the annular groove; 10, the rubber ball; 11, the spring; 12, the rubber plate. Detailed implementation manners

[0017] Next, the specific implementation manners of the present invention will be further described in detail in combination with the drawings and embodiments. The embodiments described by referring to the drawings are illustrative and are intended to explain the present invention, rather than being construed as a limitation to the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "end", "bottom", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, and thus should not be construed as a limitation to the present invention.

[0019] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "installation" should be understood in a broad sense. For example, it can be a fixed connection, a direct connection, or a connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Secondly, the so-called "one embodiment" or "embodiment" of the present invention refers to specific features, structures or characteristics that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0021] Next, the specific implementation manners of the present invention will be further described in detail in combination with the drawings. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0022] See Figure 1 and Figure 2 , a shale sample holder provided for an embodiment of the present invention, the holder includes a holder base 1 and a clamping mechanism.

[0023] Specifically, the holder base 1 is used to accommodate the shale sample, The clamping mechanism is used to adjust the position of the shale sample and clamp the shale sample. Through holes for connecting pipes 3 are installed through the outer walls on both sides of the holder base 1.

[0024] As Figure 4 shown, as a preferred embodiment, in a disclosed embodiment, the clamping mechanism includes a sliding block 6, a sliding block driving mechanism, and a rubber plate.

[0025] Specifically, the sliding block 6 is located inside the holder base 1, and both sides of the sliding block 6 are slidably connected to the inner walls on both sides of the holder base 1; a sliding rod 7 is provided at the end of the sliding block 6. One end of the sliding block driving mechanism is connected to the sliding block, and the other end extends through to the outside of the holder base 1. The rubber plate is fixedly installed on the inner wall of the holder base 1 on the opposite side of the sliding block 6.

[0026] During operation, the shale sample is placed inside the holder base 1. The sliding block driving mechanism drives the sliding block 6 to move towards the shale sample. The sliding block 6 drives the sliding rod 7 to slide inside the holder base 1 until it abuts against the side wall of the shale sample. Then, the sliding block driving mechanism is driven to make the sliding block 6 continue to move until the other side of the shale sample presses against the rubber plate 12, thus clamping the shale sample.

[0027] See Figure 2 and Figure 3 , in a preferred embodiment, the sliding block driving mechanism adopts a threaded seat 4 and a threaded rod 5. The threaded seat 4 is disposed through one end of the holder base 1, and a threaded rod 5 is threadedly connected inside the threaded seat 4. One end of the threaded rod 5 located inside the holder base 1 is connected to the sliding block 6.

[0028] During operation, the threaded seat 4 is rotated. When the threaded seat 4 rotates, it drives the threaded rod 5 to extend into the holder base, and further the threaded rod 5 drives the sliding block 6 to move towards the shale sample.

[0029] Furthermore, a rubber head 8 is provided at the end of the sliding rod 7 to protect the shale sample.

[0030] As a preferred embodiment, see Figure 2 and Figure 3 , an annular groove 9 is formed inside the sliding block 6. Two sliding rods 7 are provided at both ends of the annular groove 9, and multiple groups of rubber balls 10 are arranged inside the annular groove 9. Every two adjacent groups of the multiple groups of rubber balls 10 are in contact with each other, the outer walls of the multiple groups of rubber balls 10 are in contact with the inner wall of the annular groove 9, and the rubber balls 10 at the ends are in contact with the sliding rods 7.

[0031] Furthermore, rubber heads 8 are fixedly installed at the ends of both sliding rods 7.

[0032] By setting two sets of sliding rods 7, two sets of rubber heads 8 and multiple sets of rubber balls 10, the two sets of rubber heads 8 are subjected to the pressure of the shale sample from left to right and deform, driving the two sets of sliding rods 7 to move to the right, so that the two sets of sliding rods 7 both slide to the right inside the sliding block 6. Since the edges of the shale sample are uneven, the sliding degrees of the two sets of sliding rods 7 are different. The two sets of sliding rods 7 squeeze the rubber balls 10 on the side walls, and the multiple sets of rubber balls 10 squeeze each other, and the positions between the multiple sets of rubber balls 10 move, realizing flexible clamping of the shale sample, reducing the possibility of edge collision damage of the shale sample, and firmly clamping the sample to prevent the sample from displacing during the experiment.

[0033] See Figure 2 and Figure 3 In a preferred embodiment, two sets of springs 11 are fixedly installed on the inner wall of the holder base 1 opposite to the sliding block 6, and rubber plates 12 are fixedly installed at the ends of the two sets of springs 11.

[0034] By setting two sets of rubber plates 12 and two sets of springs 11, due to the unevenness of the side walls of the sample, the force directions of the two sets of rubber plates 12 and the two sets of springs 11 are different, the contact area with the outer wall of the shale is larger, the clamping of the sample is more firm, and it is not easy to cause corner collision damage to the shale sample, ensuring the accuracy of the data when measuring the weight and volume of the sample.

[0035] It should be noted that a holder top cover 2 is movably installed on the top of the holder base 1.

[0036] During operation, the dried sample is placed into the holder base, and then the threaded seat 4 is rotated. When the threaded seat 4 rotates, it drives the threaded rod 5 to move to the left. Furthermore, the threaded rod 5 drives the sliding block 6 to move to the left. The sliding block 6 slides inside the holder base 1, and the sliding block 6 drives the two sets of sliding rods 7 to move to the left until one side of the two sets of rubber heads 8 touches the side wall of the shale sample. Continuously rotate the threaded seat 4 so that the threaded rod 5 always pushes the sliding block 6 to move to the left until the other side of the sample squeezes the two sets of rubber plates 12, and the two sets of rubber plates 12 squeeze the two sets of springs 11. After clamping, cover the holder top cover 2, and then connect the two side pipe connection ports 3 to perform the next operation.

[0037] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those skilled in the art who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., variations in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention.

[0038] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the best mode of carrying out the present invention currently considered, or those features that are not relevant to the implementation of the present invention).

[0039] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, fabrication, and production.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A shale sample holder, characterized in that, It includes a gripper base and a clamping mechanism; The gripper base is used to accommodate the shale sample; The clamping mechanism is used to adjust the position of the shale sample and clamp the shale sample; Through pipe connectors are installed through the outer walls on both sides of the gripper base.

2. The shale sample holder according to claim 1, characterized in that, The clamping mechanism includes a sliding block, a sliding block driving mechanism and a rubber plate; The sliding block is located inside the gripper base, and both sides of the sliding block are slidably connected to the inner walls on both sides of the gripper base; a sliding rod is provided at the end of the sliding block; One end of the sliding block driving mechanism is connected to the sliding block, and the other end extends through to the outside of the gripper base; The sliding block driving mechanism is used to drive the sliding block to drive the shale sample to slide inside the gripper base, so that the sliding rod and the rubber plate respectively abut against both sides of the shale sample to clamp the shale sample; The rubber plate is fixedly installed on the inner wall of the gripper base on the opposite side of the sliding block.

3. The shale sample holder according to claim 2, characterized in that, The sliding block driving mechanism includes a threaded seat and a threaded rod; The threaded seat is disposed through one end of the gripper base, and the threaded rod is threadedly connected inside the threaded seat. One end of the threaded rod located inside the gripper base is connected to the sliding block.

4. The shale sample holder according to claim 2, characterized in that, An annular groove is formed inside the sliding block, and multiple groups of rubber balls are arranged inside the annular groove. The outer walls of the rubber balls are in contact with the inner wall of the annular groove.

5. The shale sample holder according to claim 4, characterized in that, Every two adjacent groups of the rubber balls are in contact with each other.

6. The shale sample holder according to claim 5, characterized in that, One sliding rod is provided at each end of the annular groove; the rubber balls at the ends are in contact with the sliding rods.

7. The shale sample holder according to claim 6, characterized in that, Rubber heads are fixedly installed at the ends of both sliding rods.

8. The shale sample holder according to claim 1, characterized in that, Two groups of springs are fixedly installed on the inner wall of the gripper base on the opposite side of the sliding block, and the rubber plate is fixedly installed at the ends of the two groups of springs.

9. The shale sample holder according to claim 1, characterized in that, A gripper top cover is movably installed on the top of the gripper base.

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