A sampling device for an oil well head
By designing cleaning and positioning adjustment components for the oil wellhead sampling device, the problem of cleaning difficulties caused by oil or impurities adhering to the surface was solved, achieving efficient cleaning and improved performance of the sampling device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HAINUO MASCH MFG CO LTD
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-10
AI Technical Summary
When existing oil well sampling devices are used to sample oil, oil or impurities tend to adhere to the outer wall of the device, making cleaning difficult and reducing its effectiveness.
An oil wellhead sampling device was designed, comprising a sampling shell, a sampling cover, a sampling screw, a sampling piston, a mounting frame, an assembly bucket, cleaning components, and a mounting nozzle. Through the cooperation of the pump and the mounting nozzle, the inner and outer walls of the sampling shell are cleaned. The position of the connecting brush head is adjusted by the positioning and adjustment components to achieve all-round cleaning.
It achieves efficient cleaning of the inner and outer walls of the sampling shell, improves the effectiveness of the device, and simplifies the cleaning process.
Smart Images
Figure CN224478921U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil well technology, and in particular to a sampling device for oil wellheads. Background Technology
[0002] An oil well is a hole drilled using drilling methods. Generally, after drilling to the oil layer, an oil layer casing is run in, and oil well cement is injected into the annular space between the casing and the well wall to maintain the well wall and seal the oil, gas, and water layers. Then, according to the requirements of oilfield development, a perforating gun is used to open the oil layer, forming a channel. An oil tubing is then run in, and an appropriate flow-inducing method is used to raise the oil from the bottom of the well to the wellhead. When existing sampling devices are used to sample oil, some oil or impurity particles inevitably stick to the outer wall of the sampling device, making it very troublesome to clean the oil residue or impurities on the outer wall, thus reducing the effectiveness of use. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sampling device for oil wellheads.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sampling device for an oil wellhead, comprising a sampling shell, an internal thread on the inner wall of one end of the sampling shell, a sampling cover connected to the internal thread of one end of the sampling shell, a sampling screw threaded through and threaded to the surface of the sampling cover, a sampling handle fixedly connected to one end of the sampling screw, a sampling piston rotatably connected to the other end of the sampling screw, an assembly frame fixedly sleeved on the outer wall of the sampling shell, an assembly barrel fixedly connected between the two sides of the inner wall of the assembly frame, an external thread on the outer wall of the assembly barrel, an assembly cover threadedly connected to the outer wall of the assembly barrel, and a cleaning component connected to the back of the assembly barrel;
[0005] An installation collar is movably sleeved on the outer wall of the sampling housing. Multiple installation bristles are fixedly connected to the inner wall of the installation collar. An installation spring is movably sleeved on the outer wall of the sampling housing. Both ends of the installation spring are fixedly connected to the side wall of the installation collar and the side wall of the installation bracket, respectively. Installation nozzles are connected through and fixedly connected to both sides of the outer wall of the installation collar. An adjustment block is movably sleeved on the outer wall of the installation nozzle. An adjustment groove is opened on the top of the adjustment block. Multiple adjustment hooks are fixedly connected to the top of the installation nozzle. An adjustment L-shaped plate is fixedly connected to the surface of the adjustment block. An adjustment component is connected to the top of the adjustment block.
[0006] A sampling branch pipe is fixedly connected to the bottom of the sampling shell. A sampling valve is connected to the side wall of the sampling branch pipe. An internal thread is opened on the inner wall of one end of the sampling branch pipe. A sampling bottle is connected to the internal thread of one end of the sampling branch pipe. A connecting sleeve block is fixedly connected to the end of the adjusting L-shaped plate. A connecting support plate is movably sleeved inside the connecting sleeve block. A connecting stop block and a connecting brush head are fixedly connected to both ends of the connecting support plate, respectively. Multiple positioning holes are opened on the top of the connecting support plate. A positioning component is connected to the top of the connecting sleeve block.
[0007] As a further description of the above technical solution:
[0008] The cleaning assembly includes a material extraction pipe fixedly connected to the back of the assembly barrel, a material extraction pump fixedly connected to the end of the material extraction pipe, and a material extraction hose fixedly connected to the outlet of the material extraction pump.
[0009] As a further description of the above technical solution:
[0010] The end of the material extraction hose is fixedly connected to a material extraction U-shaped tube, and both ends of the material extraction U-shaped tube are fixedly connected to their corresponding installation nozzles.
[0011] As a further description of the above technical solution:
[0012] The adjustment assembly includes a limiting recess fixedly connected to the top of the adjustment sleeve block. A limiting shaft is rotatably connected between the two sides of the inner wall of the limiting recess block. A limiting loop plate is fixedly sleeved on the outer wall of the limiting shaft. The inside of the limiting loop plate is movably engaged with one of the adjustment hooks.
[0013] As a further description of the above technical solution:
[0014] The top of the limiting plate has two limiting grooves, and a limiting slider is slidably connected inside the limiting groove. A limiting spring is fixedly connected to the inner wall of the limiting groove, and the end of the limiting spring is fixedly connected to its corresponding limiting slider.
[0015] As a further description of the above technical solution:
[0016] A limiting protrusion is fixedly connected between the two limiting sliders, and a limiting hanging ring is rotatably connected between the two sides of the outer wall of the limiting protrusion. The limiting hanging ring is movably engaged with the adjusting hook.
[0017] As a further description of the above technical solution:
[0018] The positioning component includes a positioning insert that passes through the top of the connecting sleeve block. One end of the positioning insert is fixedly connected to a positioning pull block, and the other end of the positioning insert is movably inserted into one of the positioning holes. A positioning spring is movably sleeved on the outer wall of the positioning insert, and both ends of the positioning spring are fixedly connected to the side wall of the positioning pull block and the side wall of the connecting sleeve block, respectively.
[0019] This utility model has the following beneficial effects:
[0020] 1. The positioning assembly allows the connecting sleeve, connecting support plate, connecting brush head, positioning insert, positioning pull block, and positioning spring to work together. By pushing or pulling the connecting support plate, the connecting support plate drives the connecting brush head into the sampling housing. Then, releasing the positioning pull block allows the positioning spring to provide a restoring force to the positioning insert, enabling the positioning insert to be inserted into one of the positioning holes for a limited position. This facilitates the adjustment and positioning of the connecting brush head. The cleaning assembly allows the extraction pipe, extraction pump, extraction hose, extraction U-shaped pipe, and installation nozzle to work together. The extraction pump drives the extraction pipe to extract cleaning fluid from inside the assembly tank, which is then discharged through the installation nozzle on the extraction hose. Pulling the installation collar causes the installation collar to drive the installation brush bristles to clean the sampling housing. The installation collar also moves the connecting brush head on the adjusting L-shaped plate, allowing the connecting brush head to clean the inner wall of the sampling housing. This ensures thorough cleaning of both the outer and inner walls of the sampling housing, thereby improving the cleaning effect.
[0021] 2. The adjustment components allow the adjustment hook, limiting recess, limiting pivot, limiting retaining plate, limiting slider, limiting spring, and limiting ring to work together. By pushing the adjusting L-shaped plate, the adjusting L-shaped plate moves the adjusting sleeve along the direction of the nozzle installation. Then, the limiting retaining plate is turned and flipped, so that the inside of the limiting retaining plate is movably engaged with one of the adjustment hooks. Next, the limiting protrusion is pulled, so that the limiting protrusion moves the limiting slider and the limiting spring within the limiting groove. Finally, the limiting ring is turned and flipped, so that the limiting ring is movably engaged with the adjusting hook, facilitating the connection of the brush head and adjustment to the appropriate distance. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of a sampling device for an oil wellhead according to the present invention;
[0023] Figure 2 This is a schematic diagram of the internal structure of the sampling shell of a sampling device for oil wellheads according to this utility model.
[0024] Figure 3 for Figure 1 Enlarged structural diagram at point A;
[0025] Figure 4 for Figure 1 Enlarged structural diagram at point B.
[0026] Legend:
[0027] 1. Sampling housing; 2. Sampling cover; 3. Sampling screw; 4. Sampling handle; 5. Sampling piston; 6. Assembly frame; 7. Assembly bucket; 8. Assembly cover; 9. Extraction pipe; 10. Extraction pump; 11. Extraction hose; 12. Extraction U-tube; 13. Installation collar; 14. Brush bristle installation; 15. Spring installation; 16. Nozzle installation; 17. Sampling branch pipe; 18. Sampling bottle; 19. Adjusting sleeve; 20. Adjusting L-shaped plate; 21. Adjusting hook; 22. Limiting recess; 23. Limiting pivot; 24. Limiting loop plate; 25. Limiting slider; 26. Limiting spring; 27. Limiting hanging ring; 28. Connecting sleeve; 29. Connecting support plate; 30. Connecting brush head; 31. Positioning insert; 32. Positioning pull block; 33. Positioning spring. 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] Reference Figure 1-4 This utility model provides a sampling device for oil wellheads, including a sampling shell 1. One end of the sampling shell 1 has an internal thread on its inner wall. A sampling cover 2 is threadedly connected to one end of the sampling shell 1. A sampling screw 3 is threadedly connected through the surface of the sampling cover 2. A sampling handle 4 is fixedly connected to one end of the sampling screw 3, and a sampling piston 5 is rotatably connected to the other end of the sampling screw 3. An assembly frame 6 is fixedly sleeved on the outer wall of the sampling shell 1. An assembly barrel 7 is fixedly connected between the two sides of the inner wall of the assembly frame 6. The outer wall of the assembly barrel 7 has an external thread. The assembly cover 8 is threadedly connected, and a cleaning component is connected to the back of the assembly bucket 7. The cleaning component is used to rinse the outer wall of the sampling shell 1. The cleaning component includes a material extraction pipe 9 fixedly connected to the back of the assembly bucket 7. A material extraction pump 10 is fixedly connected to the end of the material extraction pipe 9. A material extraction hose 11 is fixedly connected to the outlet of the material extraction pump 10. A material extraction U-shaped pipe 12 is fixedly connected to the end of the material extraction hose 11. Both ends of the material extraction U-shaped pipe 12 are fixedly connected to their corresponding installation nozzles 16. The installation nozzles 16 are used to spray water to clean the outer wall of the sampling shell 1.
[0030] A mounting collar 13 is movably fitted onto the outer wall of the sampling housing 1. Multiple mounting bristles 14 are fixedly connected to the inner wall of the mounting collar 13. A mounting spring 15 is movably fitted onto the outer wall of the sampling housing 1. Both ends of the mounting spring 15 are fixedly connected to the side wall of the mounting collar 13 and the side wall of the mounting bracket 6, respectively. Mounting nozzles 16 are connected through and fixedly attached to both sides of the outer wall of the mounting collar 13. An adjusting block 19 is movably fitted onto the outer wall of the mounting nozzle 16. An adjusting groove is opened at the top of the adjusting block 19. Multiple adjusting hooks 21 are fixedly connected to the top of the mounting nozzle 16. An adjusting L-shaped plate 20 is fixedly connected to the surface of the adjusting block 19. An adjusting assembly is connected to the top of the adjusting block 19. The adjusting assembly includes a limiting recess 22 fixedly connected to the top of the adjusting block 19. A limiting shaft 23 is rotatably connected between the two sides of the inner wall of the recessed block 22. A limiting loop plate 24 is fixedly sleeved on the outer wall of the limiting shaft 23. The inner side of the limiting loop plate 24 is movably engaged with one of the adjusting hooks 21. Two limiting grooves are opened at the top of the limiting loop plate 24. A limiting slider 25 is slidably connected inside the limiting groove. A limiting spring 26 is fixedly connected to the inner wall of the limiting groove. The end of the limiting spring 26 is fixedly connected to the corresponding limiting slider 25. A limiting protrusion is fixedly connected between the two limiting sliders 25. A limiting ring 27 is rotatably connected between the two sides of the outer wall of the limiting protrusion. The limiting ring 27 is movably engaged with the adjusting hook 21. By movably engaging the limiting ring 27 with the adjusting hook 21, the adjusting sleeve block 19 is adjusted and limited.
[0031] A sampling branch pipe 17 is fixedly connected to the bottom of the sampling housing 1. A sampling valve is connected to the side wall of the sampling branch pipe 17. An internal thread is provided on the inner wall of one end of the sampling branch pipe 17, and a sampling bottle 18 is connected to the internal thread of one end of the sampling branch pipe 17. A connecting sleeve block 28 is fixedly connected to the end of the adjusting L-shaped plate 20. A connecting support plate 29 is movably fitted inside the connecting sleeve block 28. A connecting stop block and a connecting brush head 30 are fixedly connected to both ends of the connecting support plate 29, respectively. Multiple positioning holes are provided on the top of the connecting sleeve block 28. The positioning component includes a positioning insert 31 that passes through the top of the connecting sleeve block 28. One end of the positioning insert 31 is fixedly connected to a positioning pull block 32, and the other end of the positioning insert 31 is movably inserted into one of the positioning holes. A positioning spring 33 is movably sleeved on the outer wall of the positioning insert 31. The two ends of the positioning spring 33 are fixedly connected to the side wall of the positioning pull block 32 and the side wall of the connecting sleeve block 28, respectively. The positioning insert 31 is movably inserted into one of the positioning holes to limit the movement, thereby limiting the adjustment of the connecting support plate 29.
[0032] Working principle: In use, first rotate the sampling cover 2 to separate the sampling cover 2 from the threaded end of the sampling housing 1. Then pull the sampling cover 2 to separate it from the sampling housing 1. Subsequently, the sampling screw 3 and sampling piston 5 on the sampling cover 2 also separate from the sampling housing 1. Then pull the positioning block 32, which causes the positioning block 32 to move the positioning insert 31 and positioning spring 33 along the direction on the connecting sleeve block 28. Then, the positioning insert 31 separates from one of the positioning holes. Then pull the connecting support plate 29, which causes the connecting support plate 29 to adjust the connecting brush head 30 to a suitable distance. Then push the adjusting L-shaped plate 20, which causes the adjusting L-shaped plate 20 to move the adjusting sleeve block 19 along the direction on the mounting nozzle 16. Next, bend and flip the limiting ring plate 24 so that the inside of the limiting ring plate 24 is movably engaged with one of the adjusting hooks 21. Then pull the limiting convex plate so that the limiting convex plate drives the limiting slider 25 and the limiting spring 26 to slide inside the limiting groove. Next, bend and flip the limiting hanging ring 27 so that the limiting hanging ring 27 is movably engaged with the adjusting hook 21. Then push the connecting support plate 29 so that the connecting support plate 29 drives the connecting brush head 30 into the sampling housing 1 so that the connecting brush head 30 is adjusted to a suitable distance. Then release the positioning pull block 32, and the positioning spring 33 gives the positioning insert 31 a restoring force so that the positioning insert 31 is movably engaged with one of the positioning holes to ensure the adjustment and limiting effect.
[0033] Next, the pump 10 is started, which drives the pump pipe 9 to extract the cleaning fluid from inside the assembly tank 7. The cleaning fluid is then discharged through the installation nozzle 16 on the pump hose 11. Then, the installation collar 13 is pulled, which causes the installation collar 13 to move along the outer wall of the sampling housing 1. The installation brush bristles 14 on the installation collar 13 then clean the sampling housing 1. The installation collar 13 also moves the adjusting L-shaped plate 20, the connecting support plate 29, and the connecting brush head 30, so that the connecting brush head 30 also moves to clean the inside of the sampling housing 1, ensuring the cleaning effect.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A sampling device for an oil wellhead, comprising a sampling housing (1), characterized in that: The sampling housing (1) has an internal thread on one end of its inner wall. A sampling cover (2) is connected to the internal thread of one end of the sampling housing (1). A sampling screw (3) is threaded through the surface of the sampling cover (2). A sampling handle (4) is fixedly connected to one end of the sampling screw (3). A sampling piston (5) is rotatably connected to the other end of the sampling screw (3). An assembly frame (6) is fixedly sleeved on the outer wall of the sampling housing (1). An assembly bucket (7) is fixedly connected between the two sides of the inner wall of the assembly frame (6). An external thread is provided on the outer wall of the assembly bucket (7). An assembly cover (8) is threaded to the outer wall of the assembly bucket (7). A cleaning component is connected to the back of the assembly bucket (7). The sampling housing (1) has an installation ring (13) movably sleeved on its outer side wall. The inner wall of the installation ring (13) is fixedly connected with multiple installation bristles (14). The sampling housing (1) has an installation spring (15) movably sleeved on its outer side wall. The two ends of the installation spring (15) are fixedly connected to the side wall of the installation ring (13) and the side wall of the mounting bracket (6) respectively. Both sides of the outer side wall of the installation ring (13) are connected to the installation nozzle (16). The outer side wall of the installation nozzle (16) is movably sleeved with an adjustment block (19). The top of the adjustment block (19) is provided with an adjustment groove. The top of the installation nozzle (16) is fixedly connected with multiple adjustment hooks (21). The surface of the adjustment block (19) is fixedly connected with an adjustment L-shaped plate (20). The top of the adjustment block (19) is connected with an adjustment component. The bottom of the sampling shell (1) is fixedly connected to a sampling branch pipe (17), the side wall of the sampling branch pipe (17) is connected to a sampling valve, one end of the sampling branch pipe (17) has an internal thread, one end of the sampling branch pipe (17) is internally connected to a sampling bottle (18), the end of the adjusting L-shaped plate (20) is fixedly connected to a connecting sleeve block (28), the connecting sleeve block (28) is movably fitted with a connecting support plate (29), the two ends of the connecting support plate (29) are respectively fixedly connected to a connecting stop block and a connecting brush head (30), the top of the connecting support plate (29) has multiple positioning holes, and the top of the connecting sleeve block (28) is connected to a positioning component.
2. The sampling device for an oil wellhead according to claim 1, characterized in that: The cleaning assembly includes a material extraction pipe (9) fixedly connected to the back of the assembly barrel (7), a material extraction pump (10) fixedly connected to the end of the material extraction pipe (9), and a material extraction hose (11) fixedly connected to the outlet of the material extraction pump (10).
3. The sampling device for an oil wellhead according to claim 2, characterized in that: The end of the material extraction hose (11) is fixedly connected to a material extraction U-shaped tube (12), and both ends of the material extraction U-shaped tube (12) are fixedly connected to their corresponding installation nozzles (16).
4. The sampling device for an oil wellhead according to claim 1, characterized in that: The adjustment assembly includes a limiting recess (22) fixedly connected to the top of the adjustment sleeve (19). A limiting shaft (23) is rotatably connected between the two sides of the inner wall of the limiting recess (22). A limiting loop plate (24) is fixedly sleeved on the outer wall of the limiting shaft (23). The inside of the limiting loop plate (24) is movably engaged with one of the adjustment hooks (21).
5. A sampling device for an oil wellhead according to claim 4, characterized in that: The top of the limiting plate (24) has two limiting grooves. A limiting slider (25) is slidably connected inside the limiting groove. A limiting spring (26) is fixedly connected to the inner wall of the limiting groove. The end of the limiting spring (26) is fixedly connected to the corresponding limiting slider (25).
6. A sampling device for an oil wellhead according to claim 5, characterized in that: A limiting protrusion is fixedly connected between the two limiting sliders (25), and a limiting hanging ring (27) is rotatably connected between the two sides of the outer wall of the limiting protrusion. The limiting hanging ring (27) is movably hooked to the adjusting hook (21).
7. The sampling device for an oil wellhead according to claim 1, characterized in that: The positioning component includes a positioning insert (31) that runs through the top of the connecting sleeve (28). One end of the positioning insert (31) is fixedly connected to a positioning pull block (32), and the other end of the positioning insert (31) is movably inserted into one of the positioning holes. A positioning spring (33) is movably sleeved on the outer wall of the positioning insert (31), and both ends of the positioning spring (33) are fixedly connected to the side wall of the positioning pull block (32) and the side wall of the connecting sleeve (28), respectively.