Conformal rock core cutting device

Abstract

The utility model discloses a conformal rock core cutting device which comprises a base mechanism, a measuring mechanism, a supporting mechanism and a cutting machine, wherein the supporting mechanism and the cutting machine are arranged on a base; a sample to be cut is arranged on the supporting mechanism; the measuring mechanism is arranged at the end of the base mechanism and comprises a telescopic caliper, and a baffle is arranged at the end of the telescopic caliper. The supporting mechanism comprises a plurality of roller assemblies which are coaxially and evenly distributed, each roller assembly is composed of a set of roller units which are arranged in a mirror symmetry mode, and each roller unit comprises a roller base and a roller fixed to the roller base. According to the utility model, lithology cutting and measuring tools are integrated, a rock core can be controlled to be centered, the rock core with a preset length can be accurately cut, measuring and cutting operations can be completed by two persons, at least one hour is saved for tidying each rock core, and the timeliness and the quality of tidying the rock core are effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of core cutting technology, specifically relating to a conformal core cutting device. Background Technology

[0002] The purpose of closed-circuit core sampling is to obtain loose underground rock cores, which is an important means of obtaining information on stratigraphic lithology and oil and gas content.

[0003] Sealed core samples are usually brought out of the well with the liner attached. On-site cutting is required in sections. Traditionally, one person operates the cutting machine, two people use ropes to secure the core and move it forward, a fourth person holds it at the tail end, and a fifth person uses pipe wrenches to rotate the core and assist the cutter in making circumferential cuts. This conventional cutting method requires at least five people working together. It is prone to shaking during cutting, resulting in irregular cuts; the cutting process is also prone to errors and has low precision. Utility Model Content

[0004] This utility model is proposed to solve the problems of large number of personnel, low efficiency, low cutting accuracy and irregular cuts in the existing technology of conformal core processing. Its purpose is to provide a conformal core cutting device.

[0005] This utility model is achieved through the following technical solution:

[0006] A conformal core cutting device includes a base mechanism, a measuring mechanism, a support mechanism mounted on the base, and a cutting machine; the sample to be cut is placed on the support mechanism; the measuring mechanism is located at the end of the base mechanism and includes a telescopic caliper; the support mechanism includes multiple coaxially distributed roller assemblies, each roller assembly consisting of a set of mirror-symmetrically arranged roller units, each roller unit including a roller seat and rollers fixed on the roller seat.

[0007] In the above technical solution, the base includes a side base and at least one standard base, and the side base and the standard base are detachably connected; when multiple standard bases are included, adjacent standard bases are detachably connected.

[0008] In the above technical solution, one side wall of the side base forms a receiving cavity.

[0009] In the above technical solution, the telescopic caliper includes a scale section and a bottom sleeve. The bottom sleeve is coaxially disposed in front of the cavity of the side base, and the scale section is slidably connected to the cavity of the side base and the bottom sleeve.

[0010] In the above technical solution, the top of the ruler section is provided with a scale line; the top of the bottom sleeve is formed with a threaded hole, the threaded hole penetrates the top of the bottom sleeve, and a positioning bolt is screwed onto the threaded hole, the length of the positioning bolt being greater than the depth of the threaded hole.

[0011] In the above technical solution, the measuring mechanism is also provided with a baffle at the front end of the ruler section, and a cylinder protrudes outward from the middle of the baffle, with a column hoop provided on the outer wall of the cylinder.

[0012] In the above technical solution, the roller seat consists of a base and a rotating shaft fixed on the base, with the rotating shaft set at an inclination; the horizontal distance between the two roller edges of the roller assembly is less than the outer diameter of the sample to be cut; the sample to be cut is slidably connected to the roller assembly.

[0013] The above technical solution also includes a locking mechanism disposed on the base mechanism, the locking mechanism including a base support and a locking ring detachably connected to the top of the base support;

[0014] In the above technical solution, the base is fixed to the top surface of the side base; the locking ring is Ω-shaped, with one end fixed to the base by a pin and the other end hinged to the base.

[0015] In the above technical solution, the sample to be cut consists of a rock core and a liner sleeved on the outer wall of the rock core, and the length of the liner sleeve is greater than the length of the rock core.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a conformal core cutting device. After the cutting work is completed, the standard base can be lifted upwards to complete the disassembly, which is convenient and easy to store after disassembly. Placing the liner on the rollers ensures the orientation of the liner when moving forward, preventing the liner from deviating. The rollers also limit the left and right movement of the liner, so the liner will not wobble during cutting, resulting in a regular cut. The top of the liner is attached to the end face of the baffle, and the cutting machine is started to cut to obtain core segments and liner segments of precise length. This invention requires only two people to complete the cutting operation: one person operates the cutting machine, and the other person pushes the liner forward, saving manpower. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is a structural schematic diagram of the standard base and rollers in this utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the locking mechanism in this utility model.

[0023] In the diagram: 1. Core; 2. Liner; 3. Standard base; 31. Support leg; 32. Connecting block; 33. Connecting hole; 4. Roller assembly; 5. Side base; 6. Telescopic caliper; 61. Scale section; 611. Scale line; 62. Base sleeve; 621. Threaded hole; 622. Positioning bolt; 7. Baffle; 71. Cylinder; 72. Column hoop; 8. Cutting machine; 81. Protective sleeve; 9. Locking mechanism; 91. Base support; 92. Locking ring; 93. Pin.

[0024] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-5 As shown, a conformal core cutting device includes a base mechanism, a measuring mechanism, a support mechanism mounted on the base, and a cutting machine 8; the sample to be cut is placed on the support mechanism; the measuring mechanism is located at the end of the base mechanism and includes a telescopic caliper 6; the support mechanism includes multiple coaxially distributed roller assemblies 4, each roller assembly 4 consisting of a set of mirror-symmetrically arranged roller units, each roller unit including a roller seat and rollers fixed on the roller seat.

[0027] The base includes a side base 5 and at least one standard base 3, wherein the side base 5 and the standard base 3 are detachably connected; when multiple standard bases 3 are included, adjacent standard bases 3 are detachably connected.

[0028] In this embodiment, adjacent standard bases 3 are inserted together, and the side base 5 is inserted together with the standard base 3.

[0029] In this embodiment, the standard base 3 is a plate-shaped structure, with at least one connecting block 32 formed at one end and at least one connecting hole 33 formed at the other end. The shape of the connecting hole 33 matches the shape of the connecting block 32. Preferably, the connecting block 32 is L-shaped, with the horizontal plate flush with the top surface of the base 3 and the vertical plate fixed perpendicularly to the bottom surface of the horizontal plate. The connecting hole 33 is an L-shaped hole composed of a shallow hole and a deep hole. When adjacent standard bases 3 are connected, the connecting block 32 is inserted into the connecting hole 33, the vertical plate of the connecting block 32 is inserted into the deep hole, and the horizontal plate is placed in the shallow hole. After insertion, the top surface of the connecting block 32 is flush with the top surface of the standard base 3. During the splicing operation, the L-shaped connecting block 32 at the front can be inserted into the connecting hole 33 at the rear. After the splicing is completed, the L-shaped connecting block 32 is restricted in the connecting hole 33, so that the standard bases 3 cannot wobble in the horizontal direction, and the connection is firm. The top surface of the L-shaped connecting block 32 and the top surface of the standard base 3 are on the same plane. After the cutting work is completed, the standard base 3 can be lifted up to complete the disassembly. Disassembly is convenient and the standard base 3 can be stored after disassembly.

[0030] In this embodiment, the standard base 3 is provided with support legs 31 at the bottom. Preferably, the standard base 3 is provided with four support legs 31, and the support legs 31 are located at the four corners of the standard base 3.

[0031] In this embodiment, the side base 5 is a plate-shaped structure, with at least one connector identical to the connecting block 32 formed at one end to allow for insertion with the standard base 3, and a receiving cavity formed on the side wall of the other end for accommodating the measuring mechanism; the bottom of the side base 5 is provided with support legs.

[0032] The telescopic caliper 6 includes a caliper section 61 and a bottom sleeve 62. The bottom sleeve 62 is coaxially disposed in front of the receiving cavity of the side base 5 and the two are connected. The caliper section 61 is slidably connected to the receiving cavity of the side base 5 and the bottom sleeve 62.

[0033] The top of the ruler section 61 is provided with a scale line 611;

[0034] The bottom sleeve 62 has a threaded hole 621 at its top, which penetrates the top of the bottom sleeve 62. A positioning bolt 622 is screwed onto the threaded hole 621, and the length of the positioning bolt 622 is greater than the depth of the threaded hole 621. When stretching the ruler section 61, the positioning bolt 622 is loosened to allow the ruler section 61 to slide easily. After the ruler section 61 is stretched to the appropriate position, the positioning bolt 622 is tightened, and the bottom of the positioning bolt 622 presses against the top surface of the ruler section 61, restricting the movement of the ruler section 61. At this time, the top of the liner 2 is placed against the top surface of the cylinder 71, and the cutting machine 8 is started to cut to obtain a sample of precise length. When cutting the last section of the sample, an imbalance occurs due to its own weight, and the lighter end is prone to tilting. At this time, the column clamp 72 is locked to clamp the liner 2 and the core 1 with the cylinder 71, preventing tilting.

[0035] In this embodiment, the measuring mechanism is further provided with a baffle 7 at the front end of the ruler section 61. A cylinder 71 protrudes outward from the middle of the baffle 7, and a column hoop 72 is provided on the outer wall of the cylinder 71. Before cutting, the ruler section 61 is first pulled out of the cavity so that the distance between the top of the cylinder 71 and the cutting machine 8 is equal to the desired segment length. The data at the contact point between the scale line 611 and the front end of the bottom sleeve 62 is this length.

[0036] The roller assembly 4 is located in the middle of the standard base 3; the roller seat consists of a base and a rotating shaft fixed on the base, with the rotating shaft inclined; the horizontal distance between the edges of the two rollers of the roller assembly 4 is less than the outer diameter of the sample to be cut; the sample to be cut is slidably connected to the roller assembly. During cutting, the sample to be cut is placed above the roller assembly 4, and the sample is pushed forward. As the sample moves, the roller assembly 4 rotates to reduce the force required to move the sample. Simultaneously, the roller assemblies 4 on each standard base 3 are aligned in a straight line. Placing the sample on the roller assembly 4 ensures the correct orientation of the sample as it moves forward, preventing it from shifting. The roller assembly 4 also restricts the lateral movement of the sample, preventing it from wobbling during cutting and resulting in a regular cut.

[0037] The cutting machine 8 has a protective sleeve 81 above the blade to prevent debris from the liner 2 and core 1 from flying. The cutting machine 8 is vertically oriented towards the sample to be cut. Cutting can be performed by pressing down on the cutting machine 8. The blade of the cutting machine 8 can be disassembled and replaced when it becomes dull.

[0038] It also includes a locking mechanism 9 disposed on the base mechanism, the locking mechanism 9 including a base 91 and a locking ring 92 detachably connected to the top of the base 91;

[0039] In this embodiment, the base 91 is fixed to the top surface of the side base 5; the locking ring 92 is Ω-shaped, with one end fixed to the base 91 by a pin 93, and the other end hinged to the base 91. During cutting, to prevent the liner 2 from rotating, the locking ring 92 is used to press the liner 2 tightly. One side of the locking ring 92 is rotatably connected to the base 91 via a pivot, and the other side of the locking ring 92 has a through hole at its bottom. The base 91 also has a through hole at a corresponding position. When it is necessary to lock the liner 2, the through hole of the locking ring 92 is aligned with the through hole of the base 91, and then the pin 93 is inserted to restrict the rotation of the locking ring 92. The pressure of the locking ring 92 restricts the rotation of the liner 2.

[0040] The obtained underground loose rock core 1 and the liner 2 were excavated together to form a sample to be cut. The length of the liner 2 is greater than the length of the rock core 1. The liner 2 completely protects the rock core 1. The liner 2 is made of aluminum alloy or fiberglass. The liner 2 is for single use. The function of the liner 2 is to protect the shape of the rock core 1 and prevent structural damage during cutting, handling and transportation. The liner 2 and the rock core 1 are cut into sections together.

[0041] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A conformal core cutting device, characterized in that: It includes a base mechanism, a measuring mechanism, a support mechanism set on the base, and a cutting machine (8); the sample to be cut is placed on the support mechanism; the measuring mechanism is set at the end of the base mechanism and includes a telescopic caliper (6); the support mechanism includes multiple roller assemblies (4) evenly distributed on the same axis, the roller assembly (4) is composed of a set of roller units arranged in a mirror symmetry, the roller unit includes a roller seat and a roller fixed on the roller seat.

2. The conformal core cutting device according to claim 1, characterized in that: The base includes a side base (5) and at least one standard base (3), the side base (5) and the standard base (3) being detachably connected; when multiple standard bases (3) are included, adjacent standard bases (3) are detachably connected.

3. The conformal core cutting device according to claim 2, characterized in that: The side wall of one end of the side base (5) forms a receiving cavity.

4. The conformal core cutting device according to claim 3, characterized in that: The telescopic caliper (6) includes a caliper section (61) and a base sleeve (62). The base sleeve (62) is coaxially disposed in front of the cavity of the side base (5). The caliper section (61) is slidably connected to the cavity of the side base (5) and the base sleeve (62).

5. The conformal core cutting device according to claim 4, characterized in that: The top of the ruler section (61) is provided with a scale line (611); the top of the bottom sleeve (62) forms a threaded hole (621), the threaded hole (621) penetrates the top of the bottom sleeve (62), and a positioning bolt (622) is screwed onto the threaded hole (621), the length of the positioning bolt (622) being greater than the depth of the threaded hole (621).

6. The conformal core cutting device according to claim 1, characterized in that: The measuring mechanism is also provided with a baffle (7) at the front end of the ruler section (61), and a cylinder (71) protrudes outward from the middle of the baffle (7), and a column hoop (72) is provided on the outer wall of the cylinder (71).

7. The conformal core cutting device according to claim 1, characterized in that: The roller seat consists of a base and a rotating shaft fixed on the base, with the rotating shaft set at an angle; the horizontal distance between the two roller edges of the roller assembly (4) is less than the outer diameter of the sample to be cut; the sample to be cut is slidably connected to the roller assembly.

8. The conformal core cutting device according to claim 1, characterized in that: It also includes a locking mechanism (9) disposed on the base mechanism, the locking mechanism (9) including a base (91) and a locking ring (92) detachably connected to the top of the base (91).

9. The conformal core cutting device according to claim 8, characterized in that: The base (91) is fixed to the top surface of the side base (5); the locking ring (92) is Ω-shaped, with one end fixed to the base (91) by a pin (93), and the other end hinged to the base (91).

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