Oil extraction wellhead detection device

Abstract

The invention relates to the technical field of oil extraction wellhead gas detection, in particular to an oil extraction wellhead detection device which comprises a fixed disc, a fixed boss is fixedly mounted at the upper end of the fixed disc, a storage barrel is fixedly mounted at the lower end of the fixed disc, and a detection assembly is arranged in the storage barrel; a supporting frame is fixedly installed at the upper end of the fixed disc, two installation plates are fixedly installed at the lower end of the supporting frame, and a control mechanism used for controlling the detection assembly to adjust the height is arranged between the installation plates. A high-precision detector, a flexible height adjusting control mechanism and a stable ground fixing device are integrated, accurate, efficient and safe detection operation on an oil well mouth can be achieved, an inlet is covered with the fixing disc, influences of natural factors such as wind power around the well mouth are reduced, and the detection efficiency is improved. The device can be quickly and stably fixed on the ground, so that displacement or toppling of the device caused by factors such as wind power, vibration and the like is effectively prevented, and safe detection operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection at oil production wellheads, and particularly to a detection device for oil production wellheads. Background Art

[0002] An oil production wellhead, as the name implies, is the open end of the well when extracting oil. It is not only the passage for crude oil to flow from underground to the ground, but also a key device for controlling the flow of oil and gas and ensuring the safety of production. An oil production wellhead is usually equipped with a wellhead device, also known as a Christmas tree, which has multiple functions such as hanging tubing, sealing the annular space, controlling and adjusting the oil well production, etc. During the production process, the crude oil is under pressure in the underground reservoir and flows to the ground through the wellbore and tubing. The valves in the wellhead device can be opened or closed as needed to control the flow rate and production of the crude oil. At the same time, monitoring devices such as pressure gauges record parameters such as the wellhead pressure in real time, providing data support for the production process.

[0003] Before oil extraction, the detection of the wellhead is a key link to ensure the safe and efficient operation of the oil well. However, most oilfields contain hydrogen sulfide that poses a serious threat to human health. At the same time, hydrogen sulfide also has a significant impact on the oilfield environment and production equipment. To address this issue, we not only need to control the generation of hydrogen sulfide at the source and maintain its concentration within a safe range, but also strengthen the management of the process, adopt a closed gathering and transportation process flow to effectively reduce the leakage risk.

[0004] With the development of oilfields containing hydrogen sulfide, timely detection of the generation and leakage of hydrogen sulfide has become a prerequisite for ensuring safe production. In the production and operation process, the wellhead, as the primary location where the liquid in the wellbore contacts the atmosphere, is the primary channel for hydrogen sulfide gas to diffuse into the atmosphere. Therefore, the wellhead has become a key area for hydrogen sulfide gas detection. However, when detecting hydrogen sulfide gas at the wellhead, due to the influence of natural factors such as wind around the wellhead, the hydrogen sulfide gas is easily diffused by the wind, resulting in the detector being unable to fully and accurately detect the hydrogen sulfide gas, thereby reducing the working efficiency of hydrogen sulfide gas detection at the oil wellhead. Summary of the Invention

[0005] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to propose a detection device for an oil production wellhead, which integrates a high-precision detector, a flexible height adjustment control mechanism, and a stable ground fixing device, can achieve accurate, efficient and safe detection operations for the oil wellhead, and covers the inlet through a fixed disc to reduce the influence of natural factors such as wind around the wellhead, and can quickly and stably fix itself on the ground, effectively preventing the device from shifting or toppling due to factors such as wind and vibration, ensuring the safe progress of the detection operation.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: An oil wellhead detection device comprises a fixed disc, a fixed boss is fixedly mounted on the upper end of the fixed disc, a storage cylinder is fixedly mounted on the lower end of the fixed disc, a detection assembly is arranged inside the storage cylinder; a support frame is fixedly mounted on the upper end of the fixed disc, two mounting plates are fixedly mounted on the lower end of the support frame, a control mechanism for controlling the height adjustment of the detection assembly is arranged between the mounting plates; two fixed ground nails are symmetrically arranged through the fixed disc, the fixed ground nails are threadedly connected to the fixed disc, and a driving mechanism for driving the two fixed ground nails to rotate and descend and insert into the ground is arranged on the support frame.

[0007] As a further improvement of the present invention, the detection assembly includes a fixed column, a guide plate is fixedly installed on the upper end of the fixed column, a sealing cover is fixedly installed on the lower end of the fixed column, a counterweight plate is fixedly installed on the middle part of the lower end of the sealing cover, and a detector is fixedly installed on the middle part of the fixed column.

[0008] As a further improvement of the present invention, the upper end portion of the side wall of the guide plate is a conical surface.

[0009] As a further improvement of the present invention, a sealing groove is provided at the lower opening of the storage tube, the sealing groove corresponds to the sealing cover, and a sealing ring is embedded inside the sealing groove.

[0010] As a further improvement of the present invention, the control mechanism includes a second motor fixedly mounted on the side wall of one of the mounting plates, a winding roller is rotatably connected between the two mounting plates, the second motor is coaxially fixed with the winding roller, a pull rope is wound around the winding roller, and the other end of the pull rope is fixedly mounted on the upper end surface of the guide disk; a reciprocating mechanism for evenly winding the pull rope is arranged between the two mounting plates.

[0011] As a further improvement of the present invention, a through hole for the pull rope to pass through is provided at the upper end of the fixed boss, a groove is provided at the upper end opening of the through hole, and two guide wheels are symmetrically arranged on the inner side of the groove for limiting the position of the pull rope.

[0012] As a further improvement of the present invention, the driving mechanism includes two transmission rods rotatably connected to the inner top of the support frame, the upper ends of the transmission rods are fixedly mounted with a rotating shaft, the upper ends of the rotating shaft pass through the support frame and are fixedly mounted with a transmission wheel, and the two transmission wheels are connected by a transmission belt; a first motor is fixedly mounted on the inner top of the support frame, a first gear is fixedly mounted on the end of the output shaft of the first motor, a second gear is fixedly mounted on the upper end of one of the transmission wheels, and the first gear and the second gear are meshed with each other.

[0013] As a further improvement of the present invention, a baffle is fixedly installed at the upper end of the fixing ground nail, and a sliding hole adapted to the transmission rod is opened at the upper end of the fixing ground nail.

[0014] As a further improvement of the present invention, both the transmission rod and the sliding hole are of square structures.

[0015] As a further improvement of the present invention, the reciprocating mechanism includes two fixing plates respectively and fixedly installed at the lower ends of two mounting plates. A reciprocating lead screw is rotatably connected between the two fixing plates. A cross bar is fixedly installed between the two fixing plates. A reciprocating block is arranged between the reciprocating lead screw and the cross bar. The reciprocating block is threadedly connected to the reciprocating lead screw. The cross bar is slidably connected to the reciprocating block. A guiding ring is fixedly installed on the side wall of the reciprocating block; the winding roller is drivingly connected to the reciprocating lead screw through a transmission assembly.

[0016] Compared with the prior art, the advantages of the present invention are as follows: Through the detector, the device can achieve precise detection of the oil wellhead, ensuring the accuracy and reliability of the detection data. The design of the counterweight disk increases the stability of the detection assembly, enabling the detector to remain stable during the lifting and lowering process and improving the detection accuracy; The second motor is used to drive the winding roller to rotate, thereby controlling the retraction and release of the pulling rope and realizing flexible adjustment of the height of the detection assembly. This design enables the detection personnel to easily deliver the detector to the wellheads at different depths according to actual needs, improving the flexibility and adaptability of the detection work; Through the coordinated operation of the first motor in the driving mechanism to drive the transmission wheel, the transmission rod and the fixing ground nail, the device can quickly and stably fix itself on the ground. This design not only enhances the stability of the device during the working process but also effectively prevents the device from shifting or toppling due to factors such as wind force and vibration, ensuring the safe progress of the detection work; The design of the sealing groove at the lower end of the storage cylinder and the sealing cover, as well as the setting of the sealing ring embedded therein, this sealing performance also helps to protect the detector from damage and extend its service life.

[0017] In the present invention, a high-precision detector, a flexible height adjustment control mechanism and a stable ground fixing device are integrated, which can achieve precise, efficient and safe detection operations on the oil wellhead. And by covering the inlet with a fixed disk, the influence of natural factors such as wind force around the wellhead is reduced. It can quickly and stably fix itself on the ground, effectively preventing the device from shifting or toppling due to factors such as wind force and vibration, ensuring the safe progress of the detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an oil wellhead detection device proposed by the present invention; Figure 2 Side view schematic diagram of an oil production wellhead detection device proposed by the present invention; Figure 3 Structural schematic diagram of a storage cylinder of an oil production wellhead detection device proposed by the present invention; Figure 4 Structural schematic diagram of a fixing ground nail of an oil production wellhead detection device proposed by the present invention; Figure 5 Structural schematic diagram of a reciprocating mechanism of an oil production wellhead detection device proposed by the present invention.

[0019] In the figure: 1 fixed disc, 2 fixed boss, 3 storage cylinder, 4 guide disc, 5 detector, 6 fixed column, 7 sealing cover, 8 counterweight disc, 9 support frame, 10 first motor, 11 first gear, 12 second gear, 13 transmission belt, 14 transmission wheel, 15 transmission rod, 16 baffle, 17 groove, 18 guide wheel, 19 pull rope, 20 fixing ground nail, 21 mounting plate, 22 winding roller, 23 second motor, 24 sealing groove, 25 sealing ring, 26 rotating shaft, 27 fixing plate, 28 reciprocating lead screw, 29 cross bar, 30 reciprocating block, 31 guide ring, 32 transmission component. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Refer to Figures 1 - 5, an oil wellhead detection device, comprising a fixed disc 1, a fixed boss 2 is fixedly installed on the upper end of the fixed disc 1, a receiving tube 3 is fixedly installed on the lower end of the fixed disc 1, a detection assembly is arranged inside the receiving tube 3, the detection assembly comprises a fixed column 6, a guide disc 4 is fixedly installed on the upper end of the fixed column 6, the upper end portion of the side wall of the guide disc 4 is a conical surface, which is used to guide the components in the receiving tube 3 to rise and fall smoothly, a sealing cover 7 is fixedly installed on the lower end of the fixed column 6, a sealing groove 24 is provided at the lower end opening of the receiving tube 3, the sealing groove 24 corresponds to the sealing cover 7, a sealing ring 25 is embedded in the inner side of the sealing groove 24, to ensure the sealing of the lower end opening of the receiving tube 3, a counterweight disc 8 is fixedly installed at the middle part of the lower end of the sealing cover 7, which is used to increase the stability of the detection assembly, and a detector 5 is fixedly installed at the middle part of the fixed column 6; A support frame 9 is fixedly mounted on the upper end of the fixed disc 1, and two mounting plates 21 are fixedly mounted on the lower end of the support frame 9. A control mechanism for controlling the height adjustment of the detection component is arranged between the mounting plates 21. The control mechanism includes a second motor 23 fixedly mounted on the side wall of one of the mounting plates 21. A winding roller 22 is rotatably connected between the two mounting plates 21. The second motor 23 is coaxially fixed with the winding roller 22. A pull rope 19 is wound around the winding roller 22. The other end of the pull rope 19 is fixedly mounted on the upper end surface of the guide disc 4. The pull rope 19 is retracted and released by rotating the winding roller 22, thereby controlling the lifting and lowering of the detection component. This design allows the detection personnel to easily deliver the detector to the wellhead of different depths for detection according to actual needs, thereby improving the flexibility and adaptability of the detection work. A reciprocating mechanism for evenly winding the pull rope 19 is arranged between the two mounting plates 21, and the reciprocating mechanism includes two fixed plates 27 respectively fixedly installed at the lower ends of the two mounting plates 21, a reciprocating screw 28 is rotatably connected between the two fixed plates 27, a cross bar 29 is fixedly installed between the two fixed plates 28, a reciprocating block 30 is arranged between the reciprocating screw 28 and the cross bar 29, the reciprocating block 30 is threadedly connected to the reciprocating screw 28, the cross bar 29 is slidably connected to the reciprocating block 30, and a guide ring 31 is fixedly installed on the side wall of the reciprocating block 30; The winding roller 22 and the reciprocating screw 28 are connected to each other through a transmission assembly 32. The transmission assembly 32 is composed of two transmission wheels and a transmission belt. The two transmission wheels are coaxially fixed to the winding roller 22 and the reciprocating screw 28, respectively, to play a transmission role. When the pull rope 19 is wound, the winding roller 22 rotates to drive the reciprocating screw 28 to rotate through the transmission assembly 32, thereby realizing the reciprocating motion of the reciprocating block 30. The pull rope 19 is evenly wound around the winding roller 22 during the winding process under the guidance of the guide ring 31. A through hole for the pull rope 19 to pass through is provided at the upper end of the fixed boss 2 to ensure that the pull rope 19 can pass through the fixed boss 2 smoothly. A groove 17 is provided at the upper end opening of the through hole. Two guide wheels 18 are symmetrically arranged on the inner side of the groove 17 to limit the position of the pull rope 19. An arc groove is provided in the middle of the guide wheel 18 to better limit the pull rope 19 and prevent the pull rope 19 from deflecting or getting stuck during the movement. Two fixed ground nails 20 are symmetrically arranged on the fixed disc 1, and the fixed ground nails 20 are threadedly connected to the fixed disc 1. A driving mechanism for driving the two fixed ground nails 20 to rotate and descend and insert into the ground is arranged on the support frame 9. The driving mechanism includes two transmission rods 15 rotatably connected to the top of the support frame 9. A baffle 16 is fixedly installed on the upper end of the fixed ground nail 20 to prevent the fixed ground nail 20 from falling off during the rotation process. A sliding hole adapted to the transmission rod 15 is opened on the upper end of the fixed ground nail 20. Both the transmission rod 15 and the sliding hole are square structures, ensuring that the transmission rod 15 can stably drive the fixed ground nail 20 to rotate. A rotating shaft 26 is fixedly installed on the upper end of the transmission rod 15. The upper end of the rotating shaft 26 penetrates the support frame 9 and is fixedly installed with a transmission wheel 14. The two transmission wheels 14 are connected by a transmission belt 13. A first motor 10 is fixedly mounted on the inner top of the support frame 9, a first gear 11 is fixedly mounted on the end of the output shaft of the first motor 10, a second gear 12 is fixedly mounted on the upper end of one of the transmission wheels 14, and the first gear 11 and the second gear 12 are meshed with each other.

[0023] In the initial state of the present invention, the fixing column 6, the guide plate 4, the detector 5, and the sealing cover 7 are all located in the storage tube 3. In order to ensure the sealing inside the storage tube 3, the sealing cover 7 is tightly matched with the sealing groove 24 at the lower end of the storage tube 3. At the same time, the sealing ring 25 embedded in the inner side of the sealing groove 24 further enhances the sealing effect and effectively prevents interference from the external environment. When in use, firstly, the fixed ground nail 20 is inserted into the ground through the driving mechanism to fix the entire device, and the first motor 10 is started, and its output shaft drives the first gear 11 to rotate, and then drives the two transmission wheels 14 to rotate synchronously through the meshing second gear 12 and the transmission belt 13. The rotation of the transmission wheel 14 is transmitted to the fixed ground nail 20 through the transmission rod 15. Since the transmission rod 15 and the sliding hole are both square structures, it is ensured that the descent of the fixed ground nail 20 will not affect the rotation. As the fixed ground nail 20 descends, the fixed ground nail 20 is gradually screwed into the ground to fix the device; After the device is fixed, it is necessary to adjust the height of the detection component to meet different detection requirements. Start the second motor 23, and its output shaft drives the winding roller 22 to rotate, thereby releasing the pulling rope 19. As the pulling rope 19 is released, the detection component will descend. The setting of the guide pulley 18 ensures the stable position of the pulling rope 19 during movement, avoiding entanglement or jamming. When the detection component is adjusted to the appropriate height, the detector 5 starts to work and detects the target area; After the detection is completed, the second motor 23 rotates in the reverse direction to make the winding roller 22 wind up the pulling rope 19, causing the detection component to rise. Due to the conical surface design of the guiding disk 4, it is convenient for the detection component to slide into the storage cylinder 3. After the detection component is received into the storage cylinder 3, the fixing spike 20 can be retracted by reversing the driving mechanism, so as to facilitate the movement and reuse of the entire device.

[0024] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An oil wellhead detection device, comprising a fixed disc (1), characterized in that: A fixed boss (2) is fixedly mounted on the upper end of the fixed disc (1), a storage cylinder (3) is fixedly mounted on the lower end of the fixed disc (1), and a detection assembly is arranged inside the storage cylinder (3); a support frame (9) is fixedly mounted on the upper end of the fixed disc (1), two mounting plates (21) are fixedly mounted on the lower end of the support frame (9), and a control mechanism for controlling the height adjustment of the detection assembly is arranged between the mounting plates (21); two fixed ground nails (20) are symmetrically arranged through the fixed disc (1), the fixed ground nails (20) are threadedly connected to the fixed disc (1), and a driving mechanism for driving the two fixed ground nails (20) to rotate and descend and insert into the ground is arranged on the support frame (9).

2. The oil wellhead detection device according to claim 1, characterized in that: The detection assembly comprises a fixed column (6), a guide plate (4) is fixedly mounted on the upper end of the fixed column (6), a sealing cover (7) is fixedly mounted on the lower end of the fixed column (6), a counterweight plate (8) is fixedly mounted on the middle part of the lower end of the sealing cover (7), and a detector (5) is fixedly mounted on the middle part of the fixed column (6).

3. The oil wellhead detection device according to claim 2, characterized in that: The upper end portion of the side wall of the guide plate (4) is a conical surface.

4. The oil wellhead detection device according to claim 2, characterized in that: A sealing groove (24) is provided at the lower opening of the storage tube (3), the sealing groove (24) corresponds to the sealing cover (7), and a sealing ring (25) is embedded inside the sealing groove (24).

5. The oil wellhead detection device according to claim 2, characterized in that: The control mechanism comprises a second motor (23) fixedly mounted on a side wall of one of the mounting plates (21); a winding roller (22) is rotatably connected between the two mounting plates (21); the second motor (23) is coaxially fixed to the winding roller (22); a pull rope (19) is wound around the winding roller (22); the other end of the pull rope (19) is fixedly mounted on an upper end surface of the guide disk (4); and a reciprocating mechanism for evenly winding the pull rope (19) is provided between the two mounting plates (21).

6. The oil wellhead detection device according to claim 5, characterized in that: A through hole for the pull rope (19) to pass through is provided at the upper end of the fixed boss (2), a groove (17) is provided at the upper end opening of the through hole, and two guide wheels (18) are symmetrically arranged inside the groove (17) for limiting the position of the pull rope (19).

7. The oil wellhead detection device according to claim 1, characterized in that: The driving mechanism comprises two transmission rods (15) rotatably connected to the inner top of the support frame (9); a rotating shaft (26) is fixedly mounted on the upper end of the transmission rods (15); the upper end of the rotating shaft (26) passes through the support frame (9) and is fixedly mounted with a transmission wheel (14); the two transmission wheels (14) are connected to each other by a transmission belt (13); a first motor (10) is fixedly mounted on the inner top of the support frame (9); a first gear (11) is fixedly mounted on the end of the output shaft of the first motor (10); a second gear (12) is fixedly mounted on the upper end of one of the transmission wheels (14); the first gear (11) and the second gear (12) are meshed with each other.

8. The oil wellhead detection device according to claim 7, characterized in that: A baffle (16) is fixedly mounted on the upper end of the fixed ground nail (20), and a sliding hole adapted to match the transmission rod (15) is opened on the upper end of the fixed ground nail (20).

9. The oil wellhead detection device according to claim 8, characterized in that: The transmission rod (15) and the sliding hole are both square structures.

10. The oil wellhead detection device according to claim 5, characterized in that: The reciprocating mechanism comprises two fixed plates (27) respectively fixedly mounted on the lower ends of the two mounting plates (21); a reciprocating screw (28) is rotatably connected between the two fixed plates (27); a cross bar (29) is fixedly mounted between the two fixed plates (28); a reciprocating block (30) is arranged between the reciprocating screw (28) and the cross bar (29); the reciprocating block (30) is threadedly connected to the reciprocating screw (28); the cross bar (29) is slidably connected to the reciprocating block (30); a guide ring (31) is fixedly mounted on the side wall of the reciprocating block (30); and the winding roller (22) is transmission-connected to the reciprocating screw (28) via a transmission assembly (32).

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