Multi-layer depth oil gas sampling equipment

Abstract

The utility model relates to the technical field of oil gas sampling, in particular to multi-layer depth oil gas sampling equipment which comprises a barrel, a supporting column is fixedly installed in the middle of an inner cavity of the barrel, sliding grooves are formed in the four sides of the outer wall of the supporting column, and resettable sliding assemblies are installed in the sliding grooves. A carrying plate is fixedly connected to the outer wall of the resettable sliding assembly, an air extracting pump is fixed to the bottom of the carrying plate, and the tail end of the air extracting pump fixedly communicates with an air extracting pipe. According to the sampling device, the plurality of air extracting pumps are arranged in the inner cavity of the barrel body, so that the air extracting pumps can be descended one by one when sampling is carried out at different depths, the air extracting pipes extend out to suck air into the corresponding sampling bags, and sampling of multiple layers at different depths one by one can be realized by putting the sampling device into a sampling hole at a time; in addition, the air suction hole in the air suction pipe is blocked in the descending process, so that the situation that gas at other positions enters the air suction pipe to pollute the sampled gas is avoided.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas sampling technology, specifically a multi-layer deep oil and gas sampling device. Background Technology

[0002] Oil and gas sampling is a crucial step in the exploration, development, production, storage, and transportation of oil and gas. During the development of existing oil fields, it is necessary to drill holes for sampling on the surface of the oil field. When sampling at deeper depths of the oil field, gas samples are taken from different depths of the oil field, and then the content of various elements in the gas is tested. Therefore, appropriate oil and gas sampling equipment is required during sampling.

[0003] Existing oil and gas sampling devices lower the sampling device to a designated depth using a sling, and then use a sampling container to sample the gas. However, during the sampling process, only one sample can be taken at a time. When sampling at multiple depths is required, the sampling container used for a single sampling must be pulled out of the sampling hole and replaced with a new sampling container, which is cumbersome and inconvenient for quickly sampling multiple depths one by one within the sampling hole. Therefore, we propose a multi-depth oil and gas sampling device. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer deep oil and gas sampling device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer deep oil and gas sampling device, comprising a cylinder, wherein a support column is fixedly installed in the middle of the inner cavity of the cylinder, and sliding grooves are provided on all four sides of the outer wall of the support column, wherein a resettable sliding component is installed in the sliding groove;

[0006] The outer wall of the resettable sliding assembly is fixedly connected to a carrier plate. A vacuum pump is fixedly connected to the bottom of the carrier plate. A vacuum pipe is fixedly connected to the tail end of the vacuum pump. The vacuum pipe passes through the cylinder and is fixedly connected to an end plate. Vacuum holes are opened on both sides of the tail end of the vacuum pipe. The top output end of the vacuum pump passes through the carrier plate and is detachably connected to a sampling bag. A second magnet block is fixedly installed on the top inner side of the carrier plate.

[0007] A servo motor is fixed to the top of the support column. A connecting plate is fixedly connected to the outer end of the drive shaft of the servo motor. A fixing rod is fixedly connected to the bottom of the outer end of the connecting plate. A first magnet block is fixed to the tail end of the fixing rod.

[0008] By adopting the above technical solution, the servo motor first drives the first magnet to rotate to one side, so that it is not aligned with any of the second magnets. The cylinder is then lowered along the pipe inside the sampling hole. When it reaches the designated position, the servo motor drives the connecting plate to rotate, which in turn drives the fixing rod to rotate. This causes the first magnet to rotate to the top of one of the second magnets. Under the principle of magnetic repulsion, the corresponding second magnet is pushed down, causing the suction pipe to extend to the lower side of the cylinder, thus allowing the suction hole to leak out. Then, the suction pump is used to extract the air, which is then introduced into the sampling bag for collection. After sampling at a single location, the servo motor drives the first magnet to rotate again to a position where it is not aligned with any of the second magnets, and then it descends to another depth for sampling. This process is repeated.

[0009] In a preferred embodiment of this utility model, the resettable sliding component includes:

[0010] A limiting rod is fixedly installed on the inner wall of a sliding groove, and a sliding block is fitted on the outer wall of the limiting rod. The outer wall of the sliding block is fixedly connected to the carrier plate.

[0011] A spring is fitted onto the outer wall of the limiting rod, and the two ends of the spring are fixedly connected to the bottom of the sliding block and the bottom of the inner cavity of the sliding groove, respectively.

[0012] By adopting the above technical solution, the first and second magnet blocks descend, thereby driving the carrier plate to descend, which in turn causes the sliding block to compress the spring. After sampling, the spring will drive the suction pipe to rise, thereby pressing the end plate against the bottom of the cylinder, thus sealing the suction pipe. Furthermore, the suction pipe that has not been sampled is also sealed during the descent, which helps to prevent other gases from entering the suction pipe and thus helps to prevent the sample from being contaminated during sampling.

[0013] In a preferred embodiment of the present invention, a fixing plate is fixed on all four sides of the outer wall of the cylinder, and a retainer is connected to both sides of the outer wall of the fixing plate. Rollers are rotatably installed on the inner wall of the retainer.

[0014] By adopting the above technical solution, when the device descends along the pipe in the sampling hole during sampling, it is easy to collide with the pipe wall. During the collision, the roller can roll along the pipe wall, which helps to avoid wear on the cylinder.

[0015] In a preferred embodiment of the present invention, a damper is provided between the outer wall of the fixed plate and the retainer, and the two ends of the damper are fixedly connected to the retainer and the fixed plate, respectively.

[0016] By adopting the above technical solution, an impact force is generated during the collision, and the damper can buffer the impact force, thereby reducing the impact of vibration on the equipment inside the cylinder and thus playing a protective role.

[0017] In a preferred embodiment of this utility model, the top of the cylinder is detachably connected to an end cap, and a cable is fixedly connected to the top of the end cap.

[0018] By adopting the above technical solution, a cable is installed inside the cable, which facilitates the supply of power to the electrical equipment inside the cylinder.

[0019] In a preferred embodiment of this utility model, the outer wall of the cable is provided with scale lines.

[0020] By adopting the above technical solution, the scale lines are set so that when the device is lowered into the sampling hole, the scale lines can be referenced to achieve accurate sampling at different depths.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This application discloses a multi-layer deep oil and gas sampling device. Multiple air pumps are installed inside the cylinder cavity, allowing for sequential lowering of each pump during sampling at different depths. This extends the air extraction pipe to draw gas into the corresponding sampling bag, enabling multi-layer sampling at different depths with a single placement of the device into the sampling hole. This improves sampling efficiency. Furthermore, the air extraction holes on the extraction pipe are blocked during descent, preventing gas from other locations from entering the extraction pipe and contaminating the sampled gas.

[0023] Rollers are installed on the outer wall of the cylinder. When the cylinder descends through the pipe in the hole, the rollers roll along the pipe wall upon impact, which helps to avoid wear on the cylinder. At the same time, the impact force generated upon impact is buffered by the damper, which helps to reduce the impact of vibration on the equipment on the inner wall of the cylinder, thus playing a protective role. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of a multi-layer deep oil and gas sampling device according to the present invention;

[0026] Figure 2 This is a cross-sectional structural diagram of a multi-layer deep oil and gas sampling device according to the present invention;

[0027] Figure 3This is a schematic diagram of the carrier plate, air pump, and suction pipe of a multi-layer deep oil and gas sampling device according to this utility model.

[0028] Figure 4 This is a schematic diagram of the drive component structure of a multi-layer deep oil and gas sampling device according to the present invention.

[0029] In the picture:

[0030] 1. Cylinder body; 11. End cap; 12. Cable;

[0031] 2. Support column; 21. Slide groove; 22. Limiting rod; 23. Sliding block; 24. Spring; 25. Servo motor; 26. Connecting plate; 27. Fixing rod; 28. First magnet block;

[0032] 3. Carrier plate; 31. Vacuum pump; 32. Vacuum pipe; 33. Sampling bag; 34. End plate; 35. Vacuum port; 36. Second magnet block;

[0033] 4. Fixed plate; 41. Damper; 42. Cage; 43. Roller. Detailed Implementation

[0034] Please see Figure 1-4 This utility model provides a technical solution: a multi-layer deep oil and gas sampling device, including a cylinder 1, a support column 2 fixedly installed in the middle of the inner cavity of the cylinder 1, and a sliding groove 21 opened on all four sides of the outer wall of the support column 2, and a resettable sliding component installed in the sliding groove 21.

[0035] A carrier plate 3 is fixedly connected to the outer wall of the resettable sliding assembly. A vacuum pump 31 is fixedly connected to the bottom of the carrier plate 3. A vacuum pipe 32 is fixedly connected to the tail end of the vacuum pump 31. The vacuum pipe 32 passes through the cylinder 1 and is fixedly connected to an end plate 34. Vacuum holes 35 are opened on both sides of the tail end of the vacuum pipe 32. The top output end of the vacuum pump 31 passes through the carrier plate 3 and is detachably connected to a sampling bag 33. A second magnet block 36 is fixedly installed on the top inner side of the carrier plate 3.

[0036] A servo motor 25 is fixed to the top of the support column 2. A connecting plate 26 is fixedly connected to the outer end of the drive shaft of the servo motor 25. A fixing rod 27 is fixedly connected to the bottom of the outer end of the connecting plate 26. A first magnet block 28 is fixed to the tail end of the fixing rod 27.

[0037] It should be noted that an electric control valve is installed at the connection between the sampling bag 33 and the air pump 31, which can automatically close after sampling to prevent gas backflow.

[0038] It should be understood that in actual use, the servo motor 25 first drives the first magnet 28 to rotate to one side, so that it is not aligned with any of the second magnets 36. The cylinder 1 is then lowered along the pipe in the sampling hole. When it reaches the designated position, the servo motor 25 drives the connecting plate 26 to rotate, which in turn drives the fixing rod 27 to rotate. This causes the first magnet 28 to rotate to the top of one of the second magnets 36. Under the principle of magnetic repulsion, the corresponding second magnet 36 is pushed down, causing the suction pipe 32 to extend to the lower side of the cylinder 1, thus allowing the suction hole 35 to leak out. Then, the suction pump 31 is used to extract the air, and the gas is introduced into the sampling bag 33 for storage. After sampling at a single location, the servo motor 25 drives the first magnet 28 to rotate again to a position where it is not aligned with any of the second magnets 36, and then it is lowered to another depth for sampling. This process is repeated.

[0039] For example, the first magnet 28 is aligned with one of the second magnets 36. An external control computer operates the servo motor 25. During the descent sampling, the servo motor 25 drives the first magnet 28 to rotate 45 degrees, so that the first magnet 28 is not aligned with the second magnet 36. Then, when sampling is needed, it is rotated 45 degrees again, so that it can be aligned with the next first magnet 28. Then, during the descent again, it is rotated 45 degrees again, and so on, to achieve the above sampling operation.

[0040] Furthermore, the top of the cylinder 1 is detachably connected to an end cap 11, and a cable 12 is fixedly connected to the top of the end cap 11. The cable 12 is equipped with an electrical cable, which facilitates the supply of power to the electrical equipment inside the cylinder 1.

[0041] Furthermore, the outer wall of the cable 12 is provided with scale lines. The scale lines are provided so that when the device is lowered into the sampling hole, the scale lines can be referenced to achieve accurate sampling at different depths.

[0042] like Figure 1 and 2 As shown; the resettable sliding component includes:

[0043] Limiting rod 22, the inner wall of sliding groove 21 is fixedly installed on the limiting rod 22, and sliding block 23 is fitted on the outer wall of the limiting rod 22. The outer wall of sliding block 23 is fixedly connected to the carrier plate 3.

[0044] Spring 24 is fitted onto the outer wall of the limiting rod 22, and the two ends of spring 24 are fixedly connected to the bottom of the sliding block 23 and the bottom of the inner cavity of the slide groove 21, respectively.

[0045] It should be understood that as the first magnet block 28 and the second magnet block 36 descend, the carrier plate 3 descends, which in turn causes the sliding block 23 to compress the spring 24. After sampling, the spring 24 will cause the suction pipe 32 to rise, thereby pressing the end plate 34 against the bottom of the cylinder 1, thus blocking the suction pipe 32. During the descent, the suction pipe 32 that has not been sampled is also blocked, which helps to prevent other gases from entering the suction pipe 32 and thus helps to prevent the sample from being contaminated during sampling.

[0046] like Figure 1 and 2 As shown; a fixing plate 4 is fixed on all four sides of the outer wall of the cylinder 1, and a retainer 42 is connected to both sides of the outer wall of the fixing plate 4. A roller 43 is rotatably installed on the inner wall of the retainer 42.

[0047] It should be understood that during sampling, the device is prone to collision with the pipe wall as it descends along the pipe inside the sampling hole. During the collision, the roller 43 can roll along the pipe wall, which helps to avoid wear on the cylinder 1.

[0048] Furthermore, a damper 41 is provided between the outer wall of the fixed plate 4 and the retainer 42, and the two ends of the damper 41 are fixedly connected to the retainer 42 and the fixed plate 4 respectively.

[0049] It should be understood that an impact force is generated during a collision, and the damper 41 can buffer the impact force, thereby reducing the impact of vibration on the equipment inside the cylinder 1 and thus playing a protective role.

[0050] Furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the specific embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer deep oil and gas sampling device, comprising a cylinder (1), characterized in that: A support column (2) is fixedly installed in the middle of the inner cavity of the cylinder (1). The four sides of the outer wall of the support column (2) are provided with sliding grooves (21). A resettable sliding component is installed in the sliding grooves (21). The outer wall of the resetting sliding assembly is fixedly connected to a carrier plate (3). A vacuum pump (31) is fixedly connected to the bottom of the carrier plate (3). A vacuum pipe (32) is fixedly connected to the tail end of the vacuum pump (31). The vacuum pipe (32) passes through the cylinder (1) and is fixedly connected to an end plate (34). Vacuum holes (35) are opened on both sides of the tail end of the vacuum pipe (32). The top output end of the vacuum pump (31) passes through the carrier plate (3) and is detachably connected to a sampling bag (33). A second magnet block (36) is fixedly installed on the top inner side of the carrier plate (3). A servo motor (25) is fixed to the top of the support column (2). A connecting plate (26) is fixedly connected to the outer end of the drive shaft of the servo motor (25). A fixing rod (27) is fixedly connected to the bottom of the outer end of the connecting plate (26). A first magnet block (28) is fixed to the tail end of the fixing rod (27).

2. The multi-layer deep oil and gas sampling device according to claim 1, characterized in that: The resettable sliding component includes: The limiting rod (22) is fixedly installed on the inner wall of the sliding groove (21), and the outer wall of the limiting rod (22) is fitted with a sliding block (23). The outer wall of the sliding block (23) is fixedly connected to the carrier plate (3). Spring (24) is fitted on the outer wall of the limiting rod (22), and the two ends of the spring (24) are fixedly connected to the bottom of the sliding block (23) and the bottom of the inner cavity of the slide groove (21), respectively.

3. The multi-layer deep oil and gas sampling device according to claim 1, characterized in that: The outer wall of the cylinder (1) is fixed with a fixing plate (4) on all four sides. The outer walls of the fixing plate (4) are connected with retainers (42) on both sides. The inner wall of the retainer (42) is rotatably mounted with rollers (43).

4. The multi-layer deep oil and gas sampling device according to claim 3, characterized in that: A damper (41) is provided between the outer wall of the fixed plate (4) and the retainer (42), and the two ends of the damper (41) are fixedly connected to the retainer (42) and the fixed plate (4) respectively.

5. A multi-layer deep oil and gas sampling device according to claim 1, characterized in that: The top of the cylinder (1) is detachably connected to an end cap (11), and a cable (12) is fixedly connected to the top of the end cap (11).

6. A multi-layer deep oil and gas sampling device according to claim 5, characterized in that: The outer wall of the cable (12) is provided with scale lines.

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