Sampler for oil well measurement

Abstract

The utility model discloses a sampler for oil well measurement, and relates to the technical field of sampling devices. The device comprises a sampling barrel, transparent glass is fixedly connected to the middle of the side wall of the sampling barrel in a sealed and inserted mode, scale marks are arranged on the side wall of the transparent glass, a rotating shaft is rotationally connected to the middle of the top face of the sampling barrel in an inserted mode, a rotating disc is fixedly connected to the top end of the rotating shaft, and a screw is fixedly connected to the bottom end of the rotating shaft. The side wall of the screw rod is sleeved with a threaded barrel in a threaded mode, the bottom end of the threaded barrel is fixedly connected with a piston, an end cover is detachably arranged at a barrel opening of the sampling barrel, the top face of the end cover is fixedly connected with a plug, and the plug corresponds to and is matched with the barrel opening of the sampling barrel; according to the sampling device, quantitative sampling operation can be carried out, sampling is convenient, after sampling is completed, the end cover can drive the plug to move upwards so as to plug the barrel opening of the sampling barrel, and filled crude oil is prevented from leaking out when being taken out.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically a sampler for oil well measurement. Background Technology

[0002] A search revealed a quantitative sampling device for oil wells with publication (announcement) number "CN211085825U". The device includes a measuring tube, a precision plate welded to the left side of the measuring tube, a U-shaped sliding plate on the surface of the precision plate, a bolt threaded to the left side of the U-shaped sliding plate, a push rod inside the measuring tube, and a straight rod welded to the bottom of the push rod.

[0003] Although the oil well quantitative sampling device with publication number "CN211085825U" solves the problem that existing oil well crude oil testing sampling tools cannot quantify the sample by setting up a measuring tube, push rod, rubber stopper, sample port, limiting block, push block, support block, precision plate, U-shaped sliding plate, bolt, straight rod and grip plate, the device effectively achieves the function of limiting the push block through the cooperation of the precision line, U-shaped sliding plate and bolt, and at the same time accurately and quantitatively samples the oil well crude oil inside the measuring tube, which greatly improves the process of oil well crude oil testing for operators, the crude oil in the oil well is too viscous, and the syringe-shaped sampling device cannot sample it at all. In view of the above problems, the inventor proposes an oil well measuring sampler to solve the above problems. Utility Model Content

[0004] To address the problems of inconvenient sampling and inaccurate measurement of crude oil in wells using existing oil well measurement samplers, the purpose of this invention is to provide an oil well measurement sampler.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a sampler for oil well measurement, comprising a sampling cylinder, a rotating shaft rotatably connected to the center of the top surface of the sampling cylinder, a turntable fixedly connected to the top end of the rotating shaft, a screw fixedly connected to the bottom end of the rotating shaft, a threaded cylinder threaded onto the side wall of the screw, a piston fixedly connected to the bottom end of the threaded cylinder, an end cap detachably provided at the opening of the sampling cylinder, a plug fixedly connected to the top surface of the end cap, and the plug corresponding to and cooperating with the opening of the sampling cylinder.

[0006] Preferably, the turntable is located outside the sampling cylinder, the piston is located inside the sampling cylinder, and the piston cooperates with the opening of the sampling cylinder. A transparent glass is sealed and fixedly connected to the middle of the side wall of the sampling cylinder, and the side wall of the transparent glass is provided with scale lines. A guide plate is fixedly connected to the outer side wall of the threaded cylinder, and a guide groove is provided on the upper part of the inner side wall of the sampling cylinder. The guide plate and the guide groove are corresponding and slidably connected. When the turntable is rotated, the screw can be rotated through the rotating shaft. Through the cooperation between the screw and the threaded cylinder, and the cooperation between the guide plate and the guide groove, the threaded cylinder can drive the piston to move up and down. The amount of piston movement can be observed through the scale lines on the transparent glass, thereby controlling the amount of sampling space at the bottom of the sampling cylinder for quantitative sampling.

[0007] Preferably, a ring is rotatably connected to the side wall of the rotating shaft and above the sampling cylinder. A support plate is fixedly connected to the side of the ring facing away from the rotating shaft. The bottom surface of the support plate is fixedly connected to the top surface of the sampling cylinder. The plug is made of rubber. The size of the end cap is larger than the outer diameter of the sampling cylinder. The support plate is used to support and fix the ring, and the ring is used to support the rotation of the rotating shaft. A handle is fixedly connected to the outer wall of the sampling cylinder. When sampling, the operator holds the handle to separate the plug from the opening of the sampling cylinder and immerses the sampling cylinder into the storage tank containing crude oil from the oil well, so that the crude oil in the storage tank is filled into the sampling cylinder.

[0008] Preferably, lifting rods are fixedly connected to both sides of the top surface of the end cap. A second locking hole is provided through the side wall of the lifting rod. After crude oil is filled into the sampling cylinder, the lifting rod is pulled upwards, causing the end cap to move upwards until the second locking hole aligns with the first locking hole. At this point, the locking rod is inserted into both the first and second locking holes to limit and fix the lifting rod. The plug is then located inside the opening of the sampling cylinder, sealing the opening and preventing leakage of the filled crude oil during removal. A fixing block is fixedly connected to the lower part of the outer side wall of the sampling cylinder. A cylinder body is fixedly connected to the side of the fixing block facing away from the sampling cylinder. The lifting rod passes through the cylinder body, and a spring is fixedly connected to the inner top wall of the cylinder body. The bottom end of the spring is fixedly connected to the top surface of the end cap, and the spring is sleeved on the lifting rod. When the sampling cylinder... When immersed in a storage tank containing crude oil from an oil well, the spring force creates a gap between the end cap and the sampling cylinder, preventing the end cap from rising due to the buoyancy of the crude oil and thus avoiding the blockage of the sampling cylinder opening, which would prevent sampling. A protrusion is fixedly connected to the upper part of the outer wall of the sampling cylinder, and the lifting rod passes through the protrusion. A first locking hole is provided on the side of the protrusion facing away from the sampling cylinder. The first locking hole and the second locking hole have the same diameter. A locking rod is provided on one side of the protrusion. The locking rod cooperates with the first locking hole and the second locking hole. After the sampling is completed, the lifting rod is pulled upward, causing the lifting rod to move the end cap upward until the second locking hole corresponds to the first locking hole. At this time, the locking rod is inserted into the first locking hole and the second locking hole to limit and fix the lifting rod, preventing the lifting rod from moving again.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model can perform quantitative sampling operations. A piston that can move up and down is set inside the sampling cylinder, and the amount of piston movement can be observed through the scale lines on the transparent glass. In this way, the amount of sampling space at the bottom of the sampling cylinder can be controlled to perform quantitative sampling operations.

[0011] 2. This utility model facilitates sampling. When sampling, the sampling cylinder is immersed in the storage tank containing crude oil from the oil well, and the plug is separated from the opening of the sampling cylinder. This allows the crude oil in the storage tank to be filled into the sampling cylinder. After sampling is completed, pulling the lifting rod upwards causes the end cap to move the plug upwards, sealing the opening of the sampling cylinder and preventing leakage of the filled crude oil when it is taken out. Furthermore, the upward movement can limit and fix the lifting rod, preventing it from moving again after adjustment.

[0012] 3. In this utility model, a spring is provided between the end cap and the sampling cylinder. When the sampling cylinder is immersed in the storage tank containing crude oil from the oil well, the spring force can make a gap between the end cap and the sampling cylinder, thereby preventing the end cap from rising due to the buoyancy of the crude oil, and thus preventing the end cap from blocking the opening of the sampling cylinder and making it impossible to take a sample. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the sampling cylinder of this utility model.

[0016] Figure 3 This is an enlarged view of section A of this utility model.

[0017] Figure 4 This is an enlarged view of section B of this utility model.

[0018] In the diagram: 1. Sampling cylinder; 2. Handle; 3. Transparent glass; 4. Scale line; 5. Rotating shaft; 6. Turntable; 7. Screw; 8. Ring; 9. Support plate; 10. Threaded cylinder; 11. Guide plate; 12. Piston; 13. Protrusion; 14. First locking hole; 15. Locking rod; 16. Lifting rod; 17. Second locking hole; 18. End cap; 19. Plug; 20. Cylinder body; 21. Fixing block; 22. Spring. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-4As shown, this utility model provides a sampler for oil well measurement, including a sampling cylinder 1. A rotating shaft 5 is rotatably connected to the middle of the top surface of the sampling cylinder 1. A turntable 6 is fixedly connected to the top of the rotating shaft 5. A screw 7 is fixedly connected to the bottom of the rotating shaft 5. A threaded cylinder 10 is threaded onto the side wall of the screw 7. A piston 12 is fixedly connected to the bottom of the threaded cylinder 10. An end cap 18 is detachably provided at the opening of the sampling cylinder 1. A plug 19 is fixedly connected to the top surface of the end cap 18. The plug 19 corresponds to and cooperates with the opening of the sampling cylinder 1.

[0021] The turntable 6 is located outside the sampling cylinder 1, the piston 12 is located inside the sampling cylinder 1, and the piston 12 is matched with the opening of the sampling cylinder 1. A transparent glass 3 is sealed and fixedly connected to the middle of the side wall of the sampling cylinder 1, and the side wall of the transparent glass 3 is provided with scale lines 4.

[0022] By adopting the above technical solution, a guide plate 11 is fixedly connected to the outer wall of the threaded cylinder 10, and a guide groove is provided on the upper part of the inner wall of the sampling cylinder 1. The guide plate 11 corresponds to and is slidably connected to the guide groove. When the turntable 6 is rotated, the screw 7 can be rotated through the rotating shaft 5. Through the mutual cooperation between the screw 7 and the threaded cylinder 10, and the cooperation between the guide plate 11 and the guide groove, the threaded cylinder 10 can drive the piston 12 to move up and down. The movement of the piston 12 can be observed through the scale line 4 on the transparent glass 3, so as to control the amount of sampling space at the bottom of the sampling cylinder 1 for quantitative sampling.

[0023] A ring 8 is rotatably connected to the side wall of the rotating shaft 5 and above the sampling cylinder 1. A support plate 9 is fixedly connected to the side of the ring 8 facing away from the rotating shaft 5. The bottom surface of the support plate 9 is fixedly connected to the top surface of the sampling cylinder 1. The plug 19 is made of rubber. The size of the end cap 18 is larger than the outer diameter of the sampling cylinder 1.

[0024] By adopting the above technical solution, the support plate 9 is used to support and fix the ring sleeve 8, and the ring sleeve 8 is used to support the rotation of the rotating shaft 5. The outer wall of the sampling cylinder 1 is fixedly connected to the handle 2. When sampling, the staff holds the handle 2 to separate the plug 19 from the opening of the sampling cylinder 1 and immerses the sampling cylinder 1 into the storage tank containing crude oil from the oil well, so that the crude oil in the storage tank is filled into the sampling cylinder 1.

[0025] Lifting rods 16 are fixedly connected to both sides of the top surface of the end cap 18, and a second locking hole 17 is provided through the side wall of the lifting rod 16.

[0026] By adopting the above technical solution, after the crude oil is filled into the sampling cylinder 1, the lifting rod 16 is pulled upward, causing the lifting rod 16 to move the end cap 18 upward until the second locking hole 17 corresponds to the first locking hole 14. At this time, the locking rod 15 is inserted into the first locking hole 14 and the second locking hole 17 to limit and fix the lifting rod 16. At this time, the plug 19 will be located in the opening of the sampling cylinder 1, thereby sealing the opening of the sampling cylinder 1 and preventing the filled crude oil from leaking out when it is taken out.

[0027] A fixing block 21 is fixedly connected to the lower part of the outer side wall of the sampling cylinder 1. A cylinder body 20 is fixedly connected to the side of the fixing block 21 facing away from the sampling cylinder 1. A lifting rod 16 passes through the cylinder body 20, and a spring 22 is fixedly connected to the inner top wall of the cylinder body 20. The bottom end of the spring 22 is fixedly connected to the top surface of the end cover 18.

[0028] By adopting the above technical solution, the spring 22 is sleeved on the lifting rod 16. When the sampling cylinder 1 is immersed into the storage tank containing crude oil from the oil well, the spring force of the spring 22 can make a gap between the end cap 18 and the sampling cylinder 1, thereby preventing the end cap 18 from rising due to the buoyancy of the crude oil, and thus preventing the plug 19 from blocking the opening of the sampling cylinder 1 and making it impossible to take a sample.

[0029] A protrusion 13 is fixedly connected to the upper part of the outer side wall of the sampling cylinder 1. A lifting rod 16 passes through the protrusion 13. A first locking hole 14 is provided on the side of the protrusion 13 facing away from the sampling cylinder 1. The diameter of the first locking hole 14 and the second locking hole 17 are the same. A locking rod 15 is provided on one side of the protrusion 13. The locking rod 15 cooperates with the first locking hole 14 and the second locking hole 17.

[0030] By adopting the above technical solution, after the retrieval is completed, the lifting rod 16 is pulled upward, causing the lifting rod 16 to move the end cover 18 upward until the second locking hole 17 corresponds to the first locking hole 14. At this time, the locking rod 15 is inserted into the first locking hole 14 and the second locking hole 17 to limit and fix the lifting rod 16, preventing the lifting rod 16 from moving again.

[0031] Working principle: When this utility model is in use, when sampling is required, the operator holds the handle 2 to separate the plug 19 from the opening of the sampling tube 1, and immerses the sampling tube 1 into the storage tank containing crude oil from the oil well, so that the crude oil in the storage tank is filled into the sampling tube 1.

[0032] It should also be noted that when the sampling cylinder 1 is immersed into the storage tank containing crude oil from the oil well, a gap should be left between the end cap 18 and the sampling cylinder 1 under the action of the spring force 22, so as to avoid the end cap 18 rising under the buoyancy of the crude oil, and thus avoid the plug 19 blocking the opening of the sampling cylinder 1 and making it impossible to take a sample.

[0033] After the crude oil is filled into the sampling cylinder 1, the lifting rod 16 is pulled upward, causing the lifting rod 16 to move the end cap 18 upward until the second locking hole 17 corresponds to the first locking hole 14. At this time, the locking rod 15 is inserted into the first locking hole 14 and the second locking hole 17 to limit and fix the lifting rod 16, preventing the lifting rod 16 from moving again. At this time, the plug 19 will be located inside the opening of the sampling cylinder 1, thereby sealing the opening of the sampling cylinder 1 and preventing the filled crude oil from leaking out when it is taken out.

[0034] Furthermore, by rotating the turntable 6, the screw 7 can be engaged with the threaded cylinder 10 through the rotating shaft 5. With the cooperation of the guide plate 11 and the guide groove, the threaded cylinder 10 can drive the piston 12 to move up and down. The amount of movement of the piston 12 can be observed through the scale line 4 on the transparent glass 3, thereby controlling the amount of sampling space at the bottom of the sampling cylinder 1 for quantitative sampling.

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A sampler for oil well measurement, comprising a sampling cylinder (1), characterized in that: A rotating shaft (5) is rotatably connected to the middle of the top surface of the sampling cylinder (1). A turntable (6) is fixedly connected to the top of the rotating shaft (5). A screw (7) is fixedly connected to the bottom of the rotating shaft (5). A threaded cylinder (10) is threaded on the side wall of the screw (7). A piston (12) is fixedly connected to the bottom of the threaded cylinder (10). An end cap (18) is detachably provided at the opening of the sampling cylinder (1). A plug (19) is fixedly connected to the top surface of the end cap (18). The plug (19) corresponds to and cooperates with the opening of the sampling cylinder (1).

2. The sampler for oil well measurement as described in claim 1, characterized in that, The turntable (6) is located outside the sampling cylinder (1), the piston (12) is located inside the sampling cylinder (1), and the piston (12) is matched with the opening of the sampling cylinder (1).

3. The sampler for oil well measurement as described in claim 1, characterized in that, The sampling tube (1) has a transparent glass (3) that is sealed and fixedly connected to the middle of its side wall, and the side wall of the transparent glass (3) is provided with scale lines (4).

4. The sampler for oil well measurement as described in claim 1, characterized in that, A ring (8) is rotatably connected to the side wall of the rotating shaft (5) and above the sampling cylinder (1). A support plate (9) is fixedly connected to the side of the ring (8) facing away from the rotating shaft (5). The bottom surface of the support plate (9) is fixedly connected to the top surface of the sampling cylinder (1).

5. A sampler for oil well measurement as described in claim 1, characterized in that, The plug (19) is made of rubber, and the end cap (18) is larger than the outer diameter of the sampling cylinder (1).

6. A sampler for oil well measurement as described in claim 1, characterized in that, The top surface of the end cap (18) is fixedly connected to both sides of the lifting rod (16), and the side wall of the lifting rod (16) is provided with a second locking hole (17).

7. A sampler for oil well measurement as described in claim 6, characterized in that, A fixing block (21) is fixedly connected to the lower part of the outer side wall of the sampling tube (1). A cylinder body (20) is fixedly connected to the side of the fixing block (21) facing away from the sampling tube (1). The lifting rod (16) passes through the cylinder body (20). A spring (22) is fixedly connected to the inner top wall of the cylinder body (20). The bottom end of the spring (22) is fixedly connected to the top surface of the end cap (18).

8. A sampler for oil well measurement as described in claim 7, characterized in that, A protrusion (13) is fixedly connected to the upper part of the outer side wall of the sampling cylinder (1). The lifting rod (16) passes through the protrusion (13). A first locking hole (14) is provided on the side of the protrusion (13) facing away from the sampling cylinder (1). The first locking hole (14) and the second locking hole (17) have the same diameter. A locking rod (15) is provided on one side of the protrusion (13). The locking rod (15) cooperates with the first locking hole (14) and the second locking hole (17).

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