Multifunctional oil stealing prevention device for producing well

Abstract

The utility model relates to the technical field of oil theft prevention of oil production wells, in particular to a multifunctional oil theft prevention device of an oil production well. The multifunctional oil stealing prevention device for the producing well comprises a connecting steel ring and a plugging device, a sealing body is arranged in the center of the upper end face of the connecting steel ring, a liquid level testing opening is formed in the connecting steel ring, a through hole penetrating through the connecting steel ring is formed in the bottom of the sealing body, and the plugging device is arranged in the sealing body. The multifunctional oil stealing prevention device for the oil producing well is installed at the emptying position of an oil well casing through the connecting steel ring, sound wave transmission is conducted through the liquid level testing opening formed in the connecting steel ring to conduct liquid level testing, and normal operation of the oil producing well is guaranteed. When the emptying valve is opened, the plugging device can be rapidly closed under the action of internal and external pressure difference, the through hole penetrating through the bottom of the sealing main body and the connecting steel ring is sealed, crude oil is prevented from leaking in a large amount, the purposes of preventing oil theft and reducing environmental pollution are achieved, and meanwhile normal testing work of the oil producing well is not affected by arranging the liquid level testing opening.

Description

Technical Field

[0001] The utility model relates to the technical field of oil theft prevention for oil production wells, in particular to a multifunctional oil theft prevention device for oil production wells. Background Art

[0002] In the production process of oil field production system, the problem of oil theft in oil wells has always been a serious problem. Oil thieves usually obtain crude oil by opening the oil pipe or casing to vent it, resulting in a large amount of crude oil leakage. In order to prevent this behavior, relevant units have tried many methods, such as welding closure, installing blind plates, and installing anti-oil theft devices in the well. Although these measures have played a role in preventing oil theft to a certain extent, they have also brought some negative effects.

[0003] First, these anti-theft measures often hinder normal testing and maintenance work. For example, welding closures and installing blind plates can restrict technicians' access to oil well inspections and maintenance, increasing workload and employee intensity. Second, these measures can cause environmental pollution. If the anti-theft device is damaged or ineffective, crude oil can leak into the environment, causing serious ecological damage. Finally, these anti-theft measures can lead to production losses. Due to the presence of the anti-theft device, technicians may not be able to detect and repair oil well problems in a timely manner, resulting in reduced crude oil production. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] The utility model provides a multifunctional oil theft prevention device for an oil production well, so as to overcome the problem in the prior art that the daily maintenance and inspection work of the oil production well is affected after the oil theft prevention device is installed.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides a multifunctional anti-theft oil device for oil production wells, comprising: a connecting steel ring and a blocking device;

[0008] The connecting steel ring is a cylindrical structure, the upper end surface of the connecting steel ring is provided with a sealing body, and the connecting steel ring is provided with a liquid level test port;

[0009] The sealing body is a hollow cylindrical structure, and the sealing body is arranged at the center of the upper end surface of the connecting steel ring;

[0010] The bottom of the sealing body is provided with a through hole penetrating the connecting steel ring, and the sealing body is provided with a blocking device;

[0011] The blocking device comprises: a circular raised baffle, a connecting shaft, a block and a connecting seat, wherein the block is arranged on the inner wall of the sealing body;

[0012] The connecting seat is arranged at the upper end of the connecting steel ring, a connecting shaft is provided in the connecting seat, a circular raised baffle is provided on the connecting shaft, the circular raised baffle and the connecting shaft are made as one body, and the connecting shaft and the connecting seat are rotatably connected.

[0013] Preferably, an annular sealing groove is provided between the sealing body and the connecting steel ring.

[0014] Preferably, the liquid level testing port is a circular through hole provided on the annular sealing groove.

[0015] Preferably, the stopper is a cylindrical structure, and is obliquely arranged on the inner wall of the sealing body, and the stopper limits the rotation angle of the circular raised baffle.

[0016] Preferably, the lower end of the sealing body is made into one piece with the connecting steel ring.

[0017] Preferably, the connecting shaft consists of two parts, the lower end of the connecting shaft is a cylindrical structure, the cylindrical structure is embedded in the connecting shaft, and the upper end of the connecting shaft is a rectangular structure, one end of the rectangular structure is integrated with a circular raised baffle.

[0018] Preferably, the connecting seat consists of two parts, the upper end of the connecting seat is two symmetrical rectangular connecting shafts, the rectangular connecting shafts are provided with circular through holes, the lower ends of the two symmetrical rectangular connecting shafts are provided with a rectangular base, and the two symmetrical rectangular connecting shafts and the rectangular base are made as one piece.

[0019] Preferably, the outer diameter of the circular raised baffle matches the outer diameter of the through hole provided at the bottom of the sealing body and through which the connecting steel ring passes, and the circular raised baffle can completely close the through hole provided at the bottom of the sealing body.

[0020] (3) Beneficial effects

[0021] The utility model provides a multifunctional oil theft prevention device for an oil production well. The device can be installed at the venting position of the oil well casing by connecting a steel ring. The liquid level test port provided on the connecting steel ring is used to transmit sound waves to perform a liquid level test, thereby ensuring the normal operation of the oil production well. When the valve is opened, the circular raised baffle is closed under the action of the internal and external pressure difference to play a sealing role, so that a large amount of crude oil cannot be leaked, thereby achieving the purpose of preventing oil theft and reducing environmental pollution without affecting the normal testing work of the oil production well. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model shows a cross-sectional structural diagram of a multifunctional anti-oil theft device for oil production wells.

[0023] Among them: 1: connecting steel ring; 2: sealing body; 3: circular raised baffle; 4: connecting shaft; 5: stopper; 6: liquid level test port; 7: connecting seat. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “inside”, “outside”, “top”, “bottom”, etc. are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0026] like Figure 1 As shown, the utility model provides a multifunctional anti-theft oil device for oil production wells, comprising: a connecting steel ring 1 and a blocking device;

[0027] The connecting steel ring 1 is a cylindrical structure, and a sealing body 2 is provided at the center of the upper end face of the connecting steel ring 1. An annular sealing groove is provided between the sealing body 2 and the connecting steel ring 1. The annular sealing groove ensures the sealing effect and prevents oil leakage. A liquid level test port 6 is provided on the connecting steel ring 1. The liquid level test port 6 is a circular through hole provided on the annular sealing groove. The liquid level test port 6 can transmit sound waves to realize liquid level testing, monitor the liquid level height in the oil well in real time, and ensure the safety and efficiency of the oil production process.

[0028] The sealing body 2 is a hollow cylindrical structure. The sealing body 2 is arranged at the center of the upper end surface of the connecting steel ring 1. The bottom of the sealing body 2 is provided with a through hole that penetrates the connecting steel ring 1 to ensure communication between the inside and the outside. The lower end of the sealing body 2 is made into one with the connecting steel ring 1. The integrated design enhances the stability of the structure and improves the sealing performance.

[0029] The sealing body 2 is provided with a blocking device, which includes: a circular raised baffle 3, a connecting shaft 4, a stopper 5 and a connecting seat 7;

[0030] The stopper 5 is provided on the inner wall of the sealing body 2. The stopper 5 is a cylindrical structure. The stopper 5 is tilted on the inner wall of the sealing body 2. The stopper 5 limits the rotation angle of the circular raised baffle 3 to prevent the circular raised baffle 3 from rotating excessively and failing to close the bottom through hole of the sealing body 2 in time. The connecting seat 7 is provided on the upper end of the connecting steel ring 1. The connecting seat 7 consists of two parts. The upper end of the connecting seat 7 is two symmetrical rectangular connecting shafts. A circular through hole is provided on the rectangular connecting shaft. A rectangular base is provided at the lower end of the two symmetrical rectangular connecting shafts. The two symmetrical rectangular connecting shafts are made into one body with the rectangular base. A connecting shaft 4 is provided in the connecting seat 7. The connecting shaft 4 is connected to the circular raised stop The key components of the plate 3 and the connecting seat 7 are a circular raised baffle 3 on the connecting shaft 4, which consists of two parts. The lower end of the connecting shaft 4 is a cylindrical structure, which is embedded in the connecting shaft 4. The upper end of the connecting shaft 4 is a rectangular structure, and one end of the rectangular structure is integrated with the circular raised baffle 3. The circular raised baffle 3 is integrated with the connecting shaft 4, and the connecting shaft 4 is rotatably connected to the connecting seat 7 so that the circular raised baffle 3 can rotate flexibly. The outer diameter of the circular raised baffle 3 matches the outer diameter of the through hole provided at the bottom of the sealing body 2 and passing through the connecting steel ring 1. The circular raised baffle 3 can completely close the through hole provided at the bottom of the sealing body 2 to prevent liquid leakage.

[0031] It should be noted that the multifunctional oil theft prevention device for oil wells is usually installed at the venting location of the oil well casing during use. The venting valve is directly clamped with a clamp or screwed into the inside of the venting valve. When the valve is opened, the circular raised baffle 3 in the sealing device rotates under the action of the internal and external pressure difference and fits with the through hole provided at the bottom of the sealing body 2 to quickly close the oil flow channel, thereby playing a sealing role and preventing a large amount of crude oil from leaking out, thereby achieving the purpose of preventing oil theft.

[0032] The liquid level test port 6 provided on the connecting steel ring 1 is usually a 3mm round hole in actual application. The purpose of the liquid level test port 6 is to allow sound waves to be transmitted from the round hole into the well during the test to ensure the needs of the oil well dynamic liquid level test. Due to the design of the liquid level test port 6, the operator can monitor the liquid level height in the oil well in real time to ensure the safety and efficiency of the oil production process.

[0033] It can be understood that the above-mentioned embodiments mentioned in the present invention can be combined with each other to form combined embodiments without violating the principle logic. Due to space limitations, the present invention will not elaborate on them.

[0034] Those skilled in the art will understand that in the above-mentioned method of the specific implementation method, the writing order of each step does not mean a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0035] The utility model provides a multifunctional anti-oil theft device for oil wells. The device is installed at the venting position of the oil well casing by connecting a steel ring 1. The liquid level test port 6 provided on the connecting steel ring 1 is used to transmit sound waves to perform liquid level test, thereby ensuring the normal operation of the oil well. When the valve is opened, the circular raised baffle 3 is closed under the action of the internal and external pressure difference to play a sealing role, so that crude oil cannot leak out in large quantities, thereby achieving the purpose of preventing oil theft and reducing environmental pollution without affecting the normal testing work of the oil well.

[0036] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A multifunctional anti-theft oil device for oil production wells, characterized in that: include: Connecting the steel ring (1) and the blocking device; The connecting steel ring (1) is a cylindrical structure, and a sealing body (2) is provided on the upper end surface of the connecting steel ring (1). A liquid level test port (6) is provided on the connecting steel ring (1); The sealing body (2) is a hollow cylindrical structure, and the sealing body (2) is arranged at the center of the upper end surface of the connecting steel ring (1); The bottom of the sealing body (2) is provided with a through hole penetrating the connecting steel ring (1), and a blocking device is provided in the sealing body (2); The blocking device comprises: a circular raised baffle (3), a connecting shaft (4), a stopper (5) and a connecting seat (7), wherein the stopper (5) is arranged on the inner wall of the sealing body (2); The connecting seat (7) is arranged at the upper end of the connecting steel ring (1), a connecting shaft (4) is provided in the connecting seat (7), a circular raised baffle (3) is provided on the connecting shaft (4), the circular raised baffle (3) and the connecting shaft (4) are made into one piece, and the connecting shaft (4) and the connecting seat (7) are rotatably connected.

2. The multifunctional anti-theft oil device for oil production wells according to claim 1, characterized in that: An annular sealing groove is provided between the sealing body (2) and the connecting steel ring (1).

3. The multifunctional anti-theft oil device for oil production wells according to claim 2, characterized in that: The liquid level test port (6) is a circular through hole provided on the annular sealing groove.

4. The multifunctional anti-theft oil device for oil production wells according to claim 1, characterized in that: The stopper (5) is a cylindrical structure, and is obliquely arranged on the inner wall of the sealing body (2). The stopper (5) limits the rotation angle of the circular raised baffle (3).

5. The multifunctional anti-oil theft device for oil production wells according to claim 1, characterized in that: The lower end of the sealing body (2) and the connecting steel ring (1) are formed into one piece.

6. The multifunctional anti-oil theft device for oil production wells according to claim 1, characterized in that: The connecting shaft (4) is composed of two parts. The lower end of the connecting shaft (4) is a cylindrical structure, and the cylindrical structure is embedded in the connecting shaft (4). The upper end of the connecting shaft (4) is a rectangular structure, and one end of the rectangular structure is made into one piece with the circular raised baffle (3).

7. The multifunctional anti-oil theft device for oil production wells according to claim 1, characterized in that: The connecting seat (7) is composed of two parts. The upper end of the connecting seat (7) is two symmetrical rectangular connecting shafts, and the rectangular connecting shafts are provided with circular through holes. The lower ends of the two symmetrical rectangular connecting shafts are provided with a rectangular base. The two symmetrical rectangular connecting shafts and the rectangular base are made into one piece.

8. The multifunctional anti-oil theft device for oil production wells according to claim 1, characterized in that: The outer diameter of the circular raised baffle (3) matches the outer diameter of a through hole provided at the bottom of the sealing body (2) and penetrating the connecting steel ring (1), and the circular raised baffle (3) can completely close the through hole provided at the bottom of the sealing body (2).

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