An oil well pressure detector anti-collision device

Abstract

An anti-collision device for an oil well pressure detector belongs to the field of oil well detection equipment protection technology. The protective cylinder and protective seat are integrally formed. The protective seat has a sealing buffer pad with a through hole one, and the protective seat has a through hole two. The protective cylinder has multiple grooves, each with a protective mechanism. The inner wall of the protective cylinder has an internal thread one, and the top cover has a through hole three containing a threaded sealing ring. The top cover has an annular boss and two abutment mechanisms. The annular boss has an external thread one, which is threaded to the internal thread one. The protective cylinder has an external thread two, and the tubing has an internal thread two, which is threaded to the internal thread two. This utility model, through the design of "lateral elastic limiting + longitudinal elastic clamping + multi-layer sealing + probe-specific protection + structural reinforcement," achieves all-round anti-collision, sealing protection, and stable positioning of the detector. It is suitable for the complex and harsh working environment of oil wells, and can ensure the detection accuracy and service life of the detector, making it highly practical.

Description

Technical Field

[0001] This utility model belongs to the field of oil well detection equipment protection technology, specifically an anti-collision device for an oil well pressure detector. Background Technology

[0002] Oil well pressure monitoring is a crucial tool for reservoir development and production control. Downhole pressure detectors need to be lowered thousands of meters into the well, enduring complex and harsh operating conditions over long periods. During the lowering process, the detectors are prone to hard friction and scraping against the inner walls of the tubing and casing, or direct impact with the downhole tool string. During production operations, the detectors may also be damaged by tubing creep or debris impact from wellbore collapse. This not only affects the accuracy and continuity of pressure monitoring data but also significantly increases equipment maintenance and replacement costs.

[0003] Existing protection methods mostly rely on simply thickening the detector shell, which can only achieve basic physical protection. They cannot effectively buffer impact energy and have limited anti-collision effect. Some protective structures are also too large, affecting the downhole operation, and lack adaptability, making it difficult to meet the actual use needs of detectors of different specifications. Summary of the Invention

[0004] To address the problems existing in the background technology, this utility model provides an anti-collision device for oil well pressure detectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-collision device for an oil well pressure detector, comprising a protective cylinder, a protective seat, a sealing buffer pad, a top cover, a threaded sealing ring, an annular boss, a tubing string, a protective mechanism, and two top-supporting mechanisms; The lower end of the protective cylinder is integrally formed with the protective seat. The inner wall of the protective seat is provided with a sealing buffer pad. The sealing buffer pad is provided with a through hole one. The protective seat is provided with a through hole two corresponding to the through hole one. The inner wall of the protective cylinder is provided with multiple grooves arranged in a circumferential array. Each groove is provided with a protective mechanism. The inner wall of the upper end of the protective cylinder is provided with an internal thread one. The top cover is provided with a through hole three. A threaded sealing ring is provided in the through hole three. The lower end of the top cover is provided with an annular boss and two abutting mechanisms. The outer wall of the annular boss is provided with an external thread one. The external thread one is threadedly connected to the internal thread one. The two abutting mechanisms are symmetrically arranged and located in the annular boss. The outer wall of the protective cylinder is provided with an external thread two. The inner wall of the tube column is provided with an internal thread two. The external thread two is threadedly connected to the internal thread two.

[0006] Each of the aforementioned protective mechanisms includes a spring and a rubber ball; One end of the spring is fixedly connected to the bottom surface of the corresponding groove, and the other end of the spring is fixedly connected to the rubber ball, which matches the corresponding groove.

[0007] Each of the aforementioned top-supporting mechanisms includes a hollow tube, a sliding rod, a spring, a top plate, and a rubber plate; The upper end of the hollow tube is fixedly connected to the lower end of the top cover, the inner wall of the lower end of the hollow tube is slidably connected to the slide rod, the slide rod is fixedly connected to the top plate, the top plate is fixedly connected to the rubber plate, the second spring is fitted on the slide rod, one end of the second spring is fixedly connected to the lower end of the hollow tube, and the other end of the second spring is fixedly connected to the top plate.

[0008] The outer wall of the protective cylinder is provided with an anti-corrosion coating.

[0009] The lower end of the protective base is provided with an arc-shaped groove surrounding the second through hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. All-round anti-collision protection, effectively avoiding damage from multiple directions: Through the elastic limiting of the horizontal spring and the rubber ball, and the elastic compression of the longitudinal spring and the rubber plate, it can absorb the energy of lateral and longitudinal impacts. Combined with the arc-shaped groove of the protective seat, it provides a surrounding protection for the probe, preventing damage to the detector body and probe due to direct collision or concentrated force.

[0011] 2. Multi-layer sealing protection to isolate the erosion of harsh media: The cable threading sealing ring, sealing buffer gasket and threaded connection work together to form a sealing system, which seals the cable threading point, the mating point between the detector and the protective seat and the device connection point, respectively, to block the intrusion of oil, gas and water in the oil well in all directions and protect the internal components of the detector.

[0012] 3. Stable and reliable positioning, ensuring detection accuracy: The top positioning of the transverse rubber ball and the pre-tightening of the longitudinal spring ensure that the detector is firmly fixed in the device, avoiding the impact of shaking on the accuracy of detection data during oil well operations. At the same time, the elastic structure can accommodate slight dimensional deviations.

[0013] 4. Strong corrosion resistance and environmental adaptability: The outer wall of the protective cylinder is equipped with an anti-corrosion coating, which can effectively resist the erosion of corrosive media such as oil, gas and water in the oil well, improve the corrosion resistance of the device, ensure its stable use in complex oil well environments, and extend its service life.

[0014] 5. Convenient installation and operation, strong adaptability: The assembly and fixing of each component and the device are realized through threaded connection. The wiring, positioning and sealing process is integrated. The elastic adjustment of the spring structure can be adapted to oil well pressure detectors of different specifications. The operation is simple and efficient.

[0015] In summary, this utility model, through the design of "lateral elastic limiting + longitudinal elastic pressing + multi-layer sealing + probe-specific protection + structural reinforcement", achieves all-round anti-collision, sealing protection and stable positioning of the detector. It is not only suitable for the complex and harsh working environment of oil wells, but also ensures the detection accuracy and service life of the detector, making it highly practical. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention; Figure 2 This is a top view of the protective cylinder of this utility model. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0018] This embodiment describes an anti-collision device for an oil well pressure detector, including a protective cylinder 1, a protective seat 2, a sealing buffer pad 3, a top cover 6, a wire sealing ring 7, an annular boss 8, a tubing string 14, a protective mechanism, and two top-supporting mechanisms. The lower end of the protective cylinder 1 is integrally formed with the protective seat 2. The inner wall of the protective seat 2 is provided with a sealing buffer pad 3. The sealing buffer pad 3 is provided with a through hole 1. The protective seat 2 is provided with a through hole 2 corresponding to the through hole 1. The inner wall of the protective cylinder 1 is provided with multiple grooves arranged in a circumferential array. Each groove is provided with a protective mechanism. The inner wall of the upper end of the protective cylinder 1 is provided with an internal thread 1. The top cover 6 is provided with a through hole 3. A threaded sealing ring 7 is provided in the through hole 3. The lower end of the top cover 6 is provided with an annular boss 8 and two abutment mechanisms. The outer wall of the annular boss 8 is provided with an external thread 1. The external thread 1 is threadedly connected to the internal thread 1. The two abutment mechanisms are symmetrically arranged and located in the annular boss 8. The outer wall of the protective cylinder 1 is provided with an external thread 2. The inner wall of the tube column 14 is provided with an internal thread 2. The external thread 2 is threadedly connected to the internal thread 2.

[0019] Each of the aforementioned protective mechanisms includes a spring 4 and a rubber ball 5; One end of the spring 4 is fixedly connected to the bottom surface of the corresponding groove, and the other end of the spring 4 is fixedly connected to the rubber ball 5, which matches the corresponding groove.

[0020] Each of the aforementioned top-supporting mechanisms includes a hollow tube 9, a slide rod 10, a spring 11, a top plate 12, and a rubber plate 13; The upper end of the hollow tube 9 is fixedly connected to the lower end of the top cover 6. The inner wall of the lower end of the hollow tube 9 is slidably connected to the slide rod 10. The slide rod 10 is fixedly connected to the top plate 12. The top plate 12 is fixedly connected to the rubber plate 13. The second spring 11 is fitted on the slide rod 10. One end of the second spring 11 is fixedly connected to the lower end of the hollow tube 9, and the other end of the second spring 11 is fixedly connected to the top plate 12.

[0021] The outer wall of the protective cylinder 1 is provided with an anti-corrosion coating.

[0022] The lower end of the protective base 2 is provided with an arc-shaped groove surrounding the through hole 2.

[0023] This utility model achieves comprehensive anti-collision sealing protection and stable use of oil well pressure detectors through an integrated design of "lateral elastic limiting + longitudinal elastic clamping + multi-layer sealing + probe-specific protection + structural reinforcement," as detailed below: In use, the oil well pressure detector is first inserted into the upper part of the protective cylinder 1. During insertion, the outer wall of the detector simultaneously compresses the rubber balls 5 arranged circumferentially on the inner wall of the protective cylinder 1, causing the rubber balls 5 to retract into the corresponding grooves and compress the spring 4. This continues until the detector's test probe passes through the through-hole 1 of the sealing buffer pad 3 (made of nitrile rubber, 5-8mm thick) and the through-hole 2 of the protective seat 2. At this point, the spring 4 releases its elastic potential energy, pushing the rubber balls 5 tightly against the outer wall of the detector. This not only completes the lateral positioning of the detector but also allows the elastic deformation of the spring 4 to absorb impact energy when the device is subjected to lateral impact, while the flexible contact of the rubber balls 5 disperses the force. To prevent lateral damage to the detector, the arc-shaped groove at the lower end of the protective seat 2, surrounding the through hole 2, precisely encloses the protruding probe in the center. When the device is lowered or comes into contact with objects such as well walls or rock cuttings during operation, the arc-shaped inner wall of the groove will bear the impact force before the probe. The arc-shaped curved surface disperses the impact force, forming a surrounding physical barrier to prevent the probe from being damaged by direct impact. Then, the detector's output wire is passed through the wire-passing sealing ring 7 (such as oil-resistant silicone rubber) on the top cover 6. This not only enables the cable to be threaded and fixed, but also helps to isolate oil, gas, and moisture intrusion through its own sealing properties. Then, the output wire is threaded into the tubing 14, and the annular boss 8 of the top cover 6 and the protective cylinder 1 are tightened first. The threaded connection is then tightened between the protective cylinder 1 and the tubing string 14. This connection not only secures the device, but its threaded fit also enhances the sealing performance, further preventing the intrusion of media from the oil well. As the top cover 6 continues to move downwards, the rubber plate 13 in the top-mounted mechanism will first come into contact with the top of the detector. Further tightening compresses the second spring 11 through the sliding contact between the slide rod 10 and the hollow tube 9 (the preload of the second spring 11 is controlled by tightening the top cover 6 until the spring compression is 1 / 3-1 / 2 of its original length, and can be flexibly adjusted according to the detector specifications). This generates a continuous longitudinal preload in the second spring 11, ensuring that the bottom of the detector fits tightly against the sealing buffer pad 3. The elasticity of the sealing buffer pad 3 further buffers the longitudinal impact; on the other hand, when the device is subjected to longitudinal impact, the extension and contraction of the second spring 11 can directly absorb the impact force, and the flexible contact of the rubber plate 13 avoids the force concentration at the top of the detector. The threaded connection of the wire sealing ring 7, the sealing buffer pad 3, the protective cylinder 1 and the tubing string 14 together form a multi-layer sealing protection system: the wire sealing ring 7 seals the cable threading point, the sealing buffer pad 3 seals the mating point between the bottom of the detector and the protective seat 2, and the threaded connection seals the connection point between the protective cylinder 1 and the tubing string 14, which comprehensively isolates the oil well from the corrosion of the detector by oil, gas and moisture. At the same time, the elasticity of the sealing buffer pad 3 can also help buffer the impact.

[0024] Finally, the device is fixed by the threaded connection between the protective cylinder 1 and the tubing string 14. The protective cylinder 1, made of high-strength aluminum alloy (the material can be flexibly selected according to the actual working conditions) and the anti-corrosion coating on the outer wall (such as epoxy zinc-rich coating) ensure the overall structural strength and weather resistance. The components work together to achieve comprehensive protection for the detector body, probe and cable entry points, ensuring its stable operation and service life in complex oil well environments.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An anti-collision device for an oil well pressure detector, characterized in that: It includes a protective cylinder (1), a protective seat (2), a sealing buffer pad (3), a top cover (6), a threaded sealing ring (7), an annular boss (8), a pipe column (14), a protective mechanism, and two top support mechanisms; The lower end of the protective cylinder (1) is integrally formed with the protective seat (2). The inner wall of the protective seat (2) is provided with a sealing buffer pad (3). The sealing buffer pad (3) is provided with a through hole one. The protective seat (2) is provided with a through hole two corresponding to the through hole one. The inner wall of the protective cylinder (1) is provided with multiple grooves arranged in a circumferential array. Each groove is provided with a protective mechanism. The inner wall of the upper end of the protective cylinder (1) is provided with an internal thread one. The top cover (6) is provided with a through hole three. The through hole three is provided with a thread sealing ring (7). The lower end of the top cover (6) is provided with an annular boss (8) and two top-supporting mechanisms. The outer wall of the annular boss (8) is provided with an external thread one. The external thread one is threadedly connected to the internal thread one. The two top-supporting mechanisms are symmetrically arranged and located inside the annular boss (8). The outer wall of the protective cylinder (1) is provided with an external thread two. The inner wall of the pipe column (14) is provided with an internal thread two. The external thread two is threadedly connected to the internal thread two.

2. The anti-collision device for an oil well pressure detector according to claim 1, characterized in that: Each of the protective mechanisms includes a spring (4) and a rubber ball (5); One end of the spring (4) is fixedly connected to the bottom surface of the corresponding groove, and the other end of the spring (4) is fixedly connected to the rubber ball (5). The rubber ball (5) matches the corresponding groove.

3. The anti-collision device for an oil well pressure detector according to claim 1, characterized in that: Each of the aforementioned top-mounting mechanisms includes a hollow tube (9), a slide rod (10), a second spring (11), a top plate (12), and a rubber plate (13); The upper end of the hollow tube (9) is fixedly connected to the lower end of the top cover (6), the inner wall of the lower end of the hollow tube (9) is slidably connected to the slide rod (10), the slide rod (10) is fixedly connected to the top plate (12), the top plate (12) is fixedly connected to the rubber plate (13), the second spring (11) is fitted on the slide rod (10), one end of the second spring (11) is fixedly connected to the lower end of the hollow tube (9), and the other end of the second spring (11) is fixedly connected to the top plate (12).

4. The anti-collision device for an oil well pressure detector according to claim 1, characterized in that: The outer wall of the protective cylinder (1) is provided with an anti-corrosion coating.

5. The anti-collision device for an oil well pressure detector according to claim 1, characterized in that: The lower end of the protective seat (2) is provided with an arc-shaped groove surrounding the through hole 2.

Images