An oil field exploration sampler with high sealing property

Abstract

The utility model discloses an oilfield exploration sampler with high sealing property has the sampling pipe body, still includes the rotary seat, the rotary seat rotation is installed at the top of sampling pipe body, the bottom fixedly connected with the connecting ring of rotary seat, the bottom equiangular installation of connecting ring has the connecting rod, the bottom fixed mounting of connecting rod has the filter plate, the bottom surface of filter plate is closely combined with the sealing plate, the inside installation of sampling pipe body has the sealed sampling mechanism. This oilfield exploration sampler with high sealing property can drive the rotation of connecting rod and filter plate through the rotation of rotary seat and connecting ring, and further realizes the misregistration opening and closing between filter plate and sealing plate, thereby being favorable to filtering the sundries of the sampled petroleum when opening, and the setting of sealed sampling mechanism can conveniently sample the petroleum and can seal and store the petroleum after sampling, improves the sealing effect of this oilfield exploration sampler.

Description

Technical Field

[0001] This utility model relates to the field of oilfield exploration technology, specifically to an oilfield exploration sampler with high sealing performance. Background Technology

[0002] Before developing an oil field, geological exploration and sampling are required to facilitate the planning of extraction work and the construction of equipment. Most existing methods of oil field exploration involve drilling for sampling. Oil field sampling requires the use of oil field exploration samplers. However, existing oil field exploration samplers still have certain shortcomings in their use.

[0003] For example, the geological exploration sampler for oilfield development proposed in application number CN201821425218.1 includes an exploration tube body, a sampling tube body vertically arranged inside the exploration tube body, a sealing end cap welded to the top of the sampling tube body, a positioning drag rod fixed to the top of the sealing end cap by screws, and two sets of stabilizing telescopic rods symmetrically installed on the outer wall of the sampling tube body by screws. In actual use, the geological exploration sampler opens and closes the sampling hole by rotating the conical cover, thereby realizing oil sampling and closure after sampling. However, gaps are easily generated between the conical cover and the conical baffle, which can lead to leakage of oil after sampling, reducing the sealing effect of the geological exploration sampler.

[0004] Therefore, we propose an oilfield exploration sampler with high sealing performance to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an oilfield exploration sampler with high sealing performance to solve the problem of reduced sealing effect mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oilfield exploration sampler with high sealing performance, comprising a sampling tube body and a rotating seat. The rotating seat is rotatably mounted on the top end of the sampling tube body, and a connecting ring is fixedly connected to the bottom end of the rotating seat. A connecting rod is installed at an equal angle on the bottom end of the connecting ring, and a filter plate is fixedly mounted on the bottom end of the connecting rod. The filter plate is rotatably connected to the sampling tube body, and a sealing plate is tightly fitted to the bottom surface of the filter plate. The sealing plate is fixedly connected to the sampling tube body. Rotating rods are symmetrically mounted on the top end of the rotating seat, and limiting rods are symmetrically mounted on the outer side of the sampling tube body. A sealing sampling mechanism is installed inside the sampling tube body.

[0007] Preferably, the sealing sampling mechanism includes a threaded sleeve fixedly installed on the top of the sampling tube body, a threaded rod passing through the inside of the threaded sleeve, a bottom rod fixedly connected to the bottom end of the threaded rod, the bottom rod being slidably connected to the filter plate and the sealing plate, a connecting shaft being installed at the bottom end of the bottom rod, a first sealing plug being connected to the bottom end of the connecting shaft, and a first end cap being fixedly installed at the bottom end of the first sealing plug.

[0008] Preferably, the threaded rod and the threaded sleeve form a threaded lifting structure, the bottom rod is rotatably connected to the first sealing plug through a connecting shaft, and the first sealing plug is movably connected to the sampling end of the sampling tube body.

[0009] The above-mentioned structural design facilitates the opening and closing of the first sealing plug and the sampling end of the sampling tube by using the threaded lifting structure formed by the threaded rod and the threaded sleeve. This is beneficial for oil sampling and subsequent sealed storage, and improves the sealing effect of this highly sealing oilfield exploration sampler.

[0010] Preferably, the sealing sampling mechanism includes a first positioning seat fixedly installed on the top of the sampling tube body, a first slide rod slidingly passing through the interior of the first positioning seat, a first top plate fixedly installed on the first slide rod, a first docking groove symmetrically opened inside the first top plate, a first top rod symmetrically installed at the top of the sampling tube body, a first spring sleeved on the first slide rod between the first top plate and the top surface of the first positioning seat, the first slide rod slidingly connected to the filter plate and the sealing plate, a second sealing plug rotatably connected to the bottom end of the first slide rod, and a second end cap fixedly installed at the bottom end of the second sealing plug.

[0011] Preferably, the first slide rod and the first top plate form a telescopic structure with the top of the first positioning seat via a first spring, and the second sealing plug is movably connected to the sampling end of the sampling tube body.

[0012] The above-mentioned structural design facilitates the correspondence and misalignment between the first docking groove and the first top rod by rotating the first sliding rod and the first top plate. Combined with the pulling of the first top plate by the first spring, it is beneficial for the first sliding rod to rise and fall and drive the second sealing plug to open and close in a misaligned manner with the sampling end of the sampling tube body. This improves the sealing effect and ease of operation of the oilfield exploration sampler with high sealing performance.

[0013] Preferably, the sealing sampling mechanism includes a second positioning seat fixedly installed on the top of the sampling tube body, a second sliding rod slidingly passing through the interior of the second positioning seat, a second top plate fixedly installed on the second sliding rod, a second docking groove symmetrically opened inside the second top plate, a second top rod symmetrically installed on the top surface of the sampling tube body, a second spring sleeved on the second sliding rod between the second top plate and the second positioning seat, the second sliding rod slidingly connected to the filter plate and the sealing plate, a bearing connected to the bottom end of the second sliding rod, a piston plate sleeved on the outer ring of the bearing, the piston plate slidingly connected to the connecting rod, a third end cap installed at the bottom end of the sampling tube body, a connecting groove opened at the top of the third end cap, and one-way valves embedded on both sides of the connecting groove.

[0014] Preferably, the second slide rod and the second top plate are telescopically connected to the second positioning seat via a second spring, and the bottom end of the second slide rod is rotatably connected to the piston plate via a bearing, and the third end cap is threadedly connected to the bottom end of the sampling tube body.

[0015] The above-mentioned structural design facilitates the docking and misalignment between the second docking groove and the second top rod by rotating the second slide rod and the second top plate. Combined with the second spring pushing the second top plate, it helps to drive the second top rod and piston plate to rise and fall. At the same time, it facilitates the piston plate to cooperate with the one-way valve to perform sealed sampling of oil when rising, further improving the sealing effect of this highly sealing oilfield exploration sampler.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This highly airtight oilfield exploration sampler, by rotating the rotating seat and connecting ring, can drive the connecting rod and filter plate to rotate, thereby realizing the staggered opening and closing of the filter plate and the sealing plate. This facilitates the filtration of large impurities in the sampled oil when it is open, and at the same time, it can store the filtered oil after closing, thus improving the sampling effect of the oilfield exploration sampler. The sealing sampling mechanism can conveniently sample oil and seal and store the sampled oil, further improving the sealing effect of the oilfield exploration sampler, as detailed below:

[0017] 1. By rotating the threaded rod, it can move up and down inside the threaded sleeve, which in turn can drive the first sealing plug at the bottom to open and close in a staggered manner with the sampling port of the sampling tube body, thereby realizing convenient sampling and sealed storage of oil, and improving the sealing effect of this highly sealing oilfield exploration sampler.

[0018] 2. The sliding of the first slide rod inside the first positioning seat can drive the second sealing plug at the bottom to open and close in a staggered manner with the sampling end of the sampling tube body, which is conducive to convenient sampling and sealed storage of oil. When the first slide rod rotates, it can control the docking and misalignment of the first docking groove and the first top rod. In addition, the elasticity of the first spring can be used to realize the automatic descent and positioning of the first slide rod and the second sealing plug after rising. This is conducive to positioning the second sealing plug after rising, ensuring the sealing effect of the second sealing plug on the sampling end of the sampling tube body.

[0019] 3. The rotation of the second slide rod can drive the second top plate to rotate, thereby controlling the docking and misalignment between the second docking groove and the second top rod. This facilitates the automatic lifting of the second slide rod and piston plate by using the second spring to push the second top plate, and then using the one-way valve to perform sealed sampling of oil.

[0020] Furthermore, the third end cap is threaded to the sampling end of the sampling tube, which facilitates the removal of the oil sample after sampling by disassembling the third end cap, thus improving the ease of operation of this highly airtight oilfield exploration sampler. Attached Figure Description

[0021] Figure 1 This is a side cross-sectional view of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the sealing sampling mechanism in Embodiment 1 of this utility model;

[0023] Figure 3 This is a side sectional view of Embodiment 2 of the present invention;

[0024] Figure 4 This is a schematic diagram of the sealing sampling mechanism in Embodiment 2 of this utility model;

[0025] Figure 5 This is a side sectional view of embodiment three of the present invention;

[0026] Figure 6 This is a schematic diagram of the sealing sampling mechanism in Embodiment 3 of this utility model.

[0027] In the diagram: 1. Sampling tube body; 2. Rotating seat; 3. Connecting ring; 4. Connecting rod; 5. Filter plate; 6. Sealing plate; 7. Rotating rod; 8. Limiting rod; 9. Threaded sleeve seat; 10. Threaded rod; 11. Bottom rod; 12. Connecting shaft; 13. First sealing plug; 14. First end cap; 15. First positioning seat; 16. First sliding rod; 17. First top plate; 18. First docking groove; 19. First top rod; 20. First spring; 21. Second sealing plug; 22. Second end cap; 23. Second positioning seat; 24. Second sliding rod; 25. Second top plate; 26. Second docking groove; 27. Second top rod; 28. Second spring; 29. ​​Bearing; 30. Piston plate; 31. Third end cap; 32. Connecting groove; 33. One-way valve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 - Figure 6 The present invention provides the following technical solution:

[0030] Example 1: To address the problem of reduced sealing effectiveness due to leakage after oil sampling in existing technologies, the following solution is disclosed. Please refer to the following for details. Figure 1-2A highly airtight oilfield exploration sampler includes a sampling tube body 1. It is characterized by further including a rotating seat 2, which is rotatably mounted on the top of the sampling tube body 1. A connecting ring 3 is fixedly connected to the bottom of the rotating seat 2. A connecting rod 4 is installed at an equal angle on the bottom of the connecting ring 3. A filter plate 5 is fixedly mounted on the bottom of the connecting rod 4. The filter plate 5 is rotatably connected to the sampling tube body 1. A sealing plate 6 is tightly fitted to the bottom surface of the filter plate 5 and is fixedly connected to the sampling tube body 1. Rotating rods 7 are symmetrically mounted on the top of the rotating seat 2. Limiting rods 8 are symmetrically mounted on the outer side of the sampling tube body 1. A sealing sampling mechanism is installed inside the sampling tube body 1. The sealing sampling mechanism includes a threaded sleeve 9 fixedly mounted on the top of the sampling tube body 1. A threaded rod 10 passes through the inside of the threaded sleeve 9. The threaded rod 10 and the threaded sleeve 9 form a threaded... The threaded lifting structure has a bottom rod 11 fixedly connected to the bottom end of the threaded rod 10. The bottom rod 11 is slidably connected to the filter plate 5 and the sealing plate 6. A connecting shaft 12 is installed at the bottom end of the bottom rod 11. A first sealing plug 13 is connected to the bottom end of the connecting shaft 12. The bottom rod 11 is rotatably connected to the first sealing plug 13 through the connecting shaft 12. The first sealing plug 13 is movably connected to the sampling end of the sampling tube body 1. A first end cap 14 is fixedly installed at the bottom end of the first sealing plug 13. By rotating the rotating rod 7, the rotating seat 2 and the connecting ring 3 can be rotated. Then, the connecting rod 4 drives the filter plate 5 to rotate in a close-fitting manner on the top surface of the sealing plate 6. This is beneficial for controlling the opening and closing between the filter plate 5 and the sealing plate 6, so that the sampled oil can be filtered for large particles when it is open, and the filtered oil can be stored when it is closed.

[0031] When the threaded rod 10 rotates, it can move up and down in a threaded manner inside the threaded sleeve 9. This allows it to work with the bottom rod 11 to drive the first sealing plug 13 and the first end cap 14 to move up and down using the connecting shaft 12 at the bottom end. This controls the misalignment and opening and closing of the first sealing plug 13 and the sampling end of the sampling tube body 1. This is beneficial for oil to enter the sampling tube body 1 through the gap between the sampling end of the sampling tube body 1 and the first sealing plug 13 when the tube is opened, so as to achieve sampling. At the same time, it is beneficial for sealing and storing the sampled oil inside the sampling tube body 1 when the tube is closed.

[0032] Example 2: This example discloses another sealed sampling method, which differs from Example 1. It reduces the number of steps involved in rotating the threaded rod 10, improving the convenience of the sampling operation. Specifically, as follows... Figure 3-4As shown, the sealing sampling mechanism includes a first positioning seat 15 fixedly installed on the top of the sampling tube body 1. A first slide rod 16 slides through the interior of the first positioning seat 15. A first top plate 17 is fixedly installed on the first slide rod 16. First docking grooves 18 are symmetrically opened inside the first top plate 17. A first top rod 19 is symmetrically installed at the top of the sampling tube body 1. A first spring 20 is sleeved on the first slide rod 16 between the top surface of the first top plate 17 and the first positioning seat 15. The first slide rod 16 and the first top plate 17 form a telescopic structure with the top of the first positioning seat 15 through the first spring 20. The first slide rod 16 is slidably connected to the filter plate 5 and the sealing plate 6. A second sealing plug 21 is rotatably connected to the bottom end of the first slide rod 16. The second sealing plug 21 is movably connected to the sampling end of the sampling tube body 1. A second end cap 22 is fixedly installed at the bottom end of the second sealing plug 21, allowing passage... Rotating the first slide rod 16 can drive the first top plate 17 to rotate synchronously, thereby enabling the first docking groove 18 to dock and misalign with the first top rod 19. This facilitates the first spring 20 pulling the first top plate 17 and the first slide rod 16 downwards during docking, and causing the second sealing plug 21 to separate from the sampling end of the sampling tube body 1, thus achieving oil sampling. After sampling, pulling the first slide rod 16 can cause the second sealing plug 21 to close with the sealing end of the sampling tube body 1, thereby sealing and storing the sampled oil. Furthermore, rotating the first slide rod 16 and the first top plate 17 can cause the first docking groove 18 to misalign with the first top rod 19, and enable the first top rod 19 to position the raised first top plate 17 and the first slide rod 16, ensuring the sealing stability of the second sealing plug 21 at the sampling end of the sampling tube body 1.

[0033] Example 3: This example discloses another sealed sampling method, which differs from Examples 1 and 2, and can further improve the sealed storage effect of the sampled petroleum. Specifically, as follows... Figure 5-6As shown, the sealed sampling mechanism includes a second positioning seat 23 fixedly installed on the top of the sampling tube body 1. A second slide rod 24 slides through the interior of the second positioning seat 23. A second top plate 25 is fixedly installed on the second slide rod 24. The interior of the second top plate 25 has symmetrically formed second docking grooves 26. A second top rod 27 is symmetrically installed on the top surface of the sampling tube body 1. A second spring 28 is sleeved on the second slide rod 24 between the second top plate 25 and the second positioning seat 23. The second slide rod 24 and the second top plate 25 are telescopically connected to the second positioning seat 23 through the second spring 28. The second slide rod 24 is slidably connected to the filter plate 5 and the sealing plate 6. A bearing 29 is connected to the bottom end of the second slide rod 24. A piston plate 30 is sleeved on the outer ring of the bearing 29, and the bottom end of the second slide rod 24 is rotatably connected to the piston plate 30 via the bearing 29. The piston plate 30 is slidably connected to the connecting rod 4. A third end cap 31 is installed at the bottom end of the sampling tube body 1. The third end cap 31 is threadedly connected to the bottom end of the sampling tube body 1. A connecting groove 32 is provided at the top end of the third end cap 31. One-way valves 33 are embedded on both sides of the connecting groove 32, allowing the second slide rod 24 and the second end cap 31 to be connected. The rotation of plate 25 controls the docking and misalignment between the second docking groove 26 and the second push rod 27. This facilitates the upward movement of the piston plate 30 by pulling the second slide rod 24 during docking, allowing for sealed sampling of external oil using the one-way valves 33 on both sides of the connecting groove 32 during the upward movement. When sampling is complete, the second top plate 25 rises to the top of the second push rod 27. At this point, rotation of the second slide rod 24 misaligns the second docking groove 26 with the second push rod 27, enabling the second push rod 27 to engage with the rising piston plate 30. The second slide rod 24 and the second top plate 25 are positioned. It should be noted that there is a gap in the sliding connection between the second slide rod 24 and the second positioning seat 23, which will not affect the rise of the piston plate 30. After sampling, the third end cap 31 can be separated from the bottom end of the sampling tube 1, so that the oil sample inside the sampling tube 1 can be taken out. When the second docking groove 26 and the second top rod 27 are docked, the second spring 28 can pull the second top plate 25, the second slide rod 24 and the piston plate 30 to reset, so as to facilitate the sampling work again.

[0034] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oilfield exploration sampler with high sealing performance, comprising a sampling tube body (1), characterized in that: It also includes a rotating seat (2), which is rotatably installed at the top of the sampling tube body (1). A connecting ring (3) is fixedly connected to the bottom of the rotating seat (2). A connecting rod (4) is installed at the bottom of the connecting ring (3) at equal angles. A filter plate (5) is fixedly installed at the bottom of the connecting rod (4). The filter plate (5) is rotatably connected to the sampling tube body (1). A sealing plate (6) is tightly attached to the bottom surface of the filter plate (5). The sealing plate (6) is fixedly connected to the sampling tube body (1). A rotating rod (7) is symmetrically installed at the top of the rotating seat (2). A limiting rod (8) is symmetrically installed on the outside of the sampling tube body (1). A sealing sampling mechanism is installed inside the sampling tube body (1).

2. The oilfield exploration sampler with high sealing performance according to claim 1, characterized in that: The sealing sampling mechanism includes a threaded sleeve (9) fixedly installed on the top of the sampling tube body (1). A threaded rod (10) passes through the inside of the threaded sleeve (9). A bottom rod (11) is fixedly connected to the bottom end of the threaded rod (10). The bottom rod (11) is slidably connected to the filter plate (5) and the sealing plate (6). A connecting shaft (12) is installed at the bottom end of the bottom rod (11). A first sealing plug (13) is connected to the bottom end of the connecting shaft (12). A first end cap (14) is fixedly installed at the bottom end of the first sealing plug (13).

3. The oilfield exploration sampler with high sealing performance according to claim 2, characterized in that: The threaded rod (10) and the threaded sleeve (9) form a threaded lifting structure. The bottom rod (11) is rotatably connected to the first sealing plug (13) through the connecting shaft (12), and the first sealing plug (13) is movably connected to the sampling end of the sampling tube body (1).

4. The oilfield exploration sampler with high sealing performance according to claim 1, characterized in that: The sealing sampling mechanism includes a first positioning seat (15) fixedly installed on the top of the sampling tube body (1), a first slide rod (16) slidingly passing through the inside of the first positioning seat (15), a first top plate (17) fixedly installed on the first slide rod (16), a first docking groove (18) symmetrically opened inside the first top plate (17), a first top rod (19) symmetrically installed at the top of the sampling tube body (1), a first spring (20) sleeved on the first slide rod (16) between the top surface of the first top plate (17) and the first positioning seat (15), the first slide rod (16) slidingly connected through the filter plate (5) and the sealing plate (6), a second sealing plug (21) rotatably connected to the bottom end of the first slide rod (16), and a second end cap (22) fixedly installed at the bottom end of the second sealing plug (21).

5. The oilfield exploration sampler with high sealing performance according to claim 4, characterized in that: The first slide bar (16) and the first top plate (17) form a telescopic structure with the top of the first positioning seat (15) via the first spring (20), and the second sealing plug (21) is movably connected to the sampling end of the sampling tube body (1).

6. The oilfield exploration sampler with high sealing performance according to claim 1, characterized in that: The sealed sampling mechanism includes a second positioning seat (23) fixedly installed on the top of the sampling tube body (1). A second slide rod (24) slides through the interior of the second positioning seat (23). A second top plate (25) is fixedly installed on the second slide rod (24). A second docking groove (26) is symmetrically opened inside the second top plate (25). A second top rod (27) is symmetrically installed on the top surface of the sampling tube body (1). A second slide rod (24) is sleeved between the second top plate (25) and the second positioning seat (23). A second spring (28) is provided. The second slide rod (24) is slidably connected to the filter plate (5) and the sealing plate (6). The bottom end of the second slide rod (24) is connected to a bearing (29). The outer ring of the bearing (29) is fitted with a piston plate (30). The piston plate (30) is slidably connected to the connecting rod (4). The bottom end of the sampling tube (1) is equipped with a third end cap (31). The top end of the third end cap (31) is provided with a connecting groove (32). One-way valves (33) are inlaid on both sides of the connecting groove (32).

7. The oilfield exploration sampler with high sealing performance according to claim 6, characterized in that: The second slide rod (24) and the second top plate (25) are telescopically connected to the second positioning seat (23) via the second spring (28), and the bottom end of the second slide rod (24) is rotatably connected to the piston plate (30) via the bearing (29). The third end cap (31) is threadedly connected to the bottom end of the sampling tube body (1).

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