A crude oil dehydration device is used in an offshore oil drilling operation.

Abstract

This utility model discloses a crude oil dehydration device for offshore oil drilling, relating to the technical field of crude oil dehydration. It includes a mixing tank, with a diversion tank fixedly connected to its lower part. Multiple settling tanks are arranged outside the diversion tank. An internal mixing mechanism is installed in the mixing tank for mixing the crude oil. A blocking plate is slidably connected to the inner wall of the diversion tank, with its upper surface contacting the bottom of the mixing tank. A lifting mechanism is also provided below the blocking plate to drive its up-and-down movement. A connecting pipe is fixedly connected to the upper part of the settling tanks. This utility model has a reasonable design structure. By using multiple settling tanks in a cyclical manner, the mixing process continues, increasing efficiency. This solves the problem that existing methods typically involve directly setting the crude oil in the mixing device after mixing, rendering the device unusable for a period and resulting in low crude oil dehydration efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of crude oil dehydration, specifically to a crude oil dehydration device used in offshore oil drilling. Background Technology

[0002] Offshore oil drilling and extraction refers to the process of exploring and extracting oil in the marine environment. Offshore oil drilling and extraction provides an important energy source for the world. Oil is a major energy source in modern society and is widely used in transportation, industry, and households. When crude oil is first extracted, its water content is generally between 20% and 50%, and it cannot be used directly. It needs to be processed again before it can be used. This requires crude oil dehydration equipment to reduce the water content in crude oil.

[0003] Existing crude oil dehydration methods generally include sedimentation separation dehydration, electro-dehydration, chemical dehydration, and centrifugal dehydration. Among them, chemical dehydration generally involves adding chemical demulsifiers to crude oil to break down the emulsion structure and make water droplets easier to separate. After adding chemical demulsifiers to crude oil, the crude oil is usually stirred to ensure that the demulsifiers are evenly dispersed in the crude oil and that they can fully contact the emulsion water in the crude oil, thereby improving the demulsification effect. Oil and water cannot be separated during the stirring process. After stirring is completed, the crude oil needs to be allowed to stand to allow oil and water to separate.

[0004] However, existing methods typically involve leaving the crude oil to stand directly inside the mixing unit after mixing, which renders the mixing unit unusable for a period of time, resulting in low crude oil dehydration efficiency. To address this issue, we offer a crude oil dehydration device for offshore oil drilling to solve these problems. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] This utility model proposes a crude oil dehydration device for offshore oil drilling. By coordinating the mixing tank and the settling tank, the mixing process is continuous, thereby increasing efficiency. This solves the problem that existing devices are generally left to settle directly in the mixing device after mixing, which renders the mixing device unusable for a period of time and results in low crude oil dehydration efficiency.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a crude oil dehydration device for offshore oil drilling, comprising a stirring tank, a diversion tank fixedly connected to the lower part of the stirring tank, and multiple settling tanks arranged outside the diversion tank; a stirring mechanism is provided inside the stirring tank for stirring and mixing the crude oil; a blocking plate is slidably connected to the inner wall of the diversion tank, the upper surface of the blocking plate is in contact with the bottom of the stirring tank, and a lifting mechanism is also provided below the blocking plate for driving the blocking plate to move up and down; a connecting pipe is fixedly connected to the upper part of the settling tank, and the end of the connecting pipe away from the settling tank is fixedly connected to the diversion tank.

[0009] Furthermore, the stirring mechanism includes an electric motor, which is fixedly mounted on the upper surface of the stirring tank, and a rotating rod is fixedly connected to the output end of the electric motor.

[0010] Furthermore, the upper end of the rotating rod is rotatably connected to the mixing tank, and a mixing rod is fixedly connected to the outer surface of the rotating rod.

[0011] Furthermore, the lifting mechanism includes a support frame, the upper end of which is fixedly connected to the diversion tank, and an electric telescopic rod is fixedly installed in the middle of the support frame.

[0012] Furthermore, a fixed rod is fixedly connected to the telescopic end of the electric telescopic rod, and the outer surface of the fixed rod is fixedly connected to the blocking plate.

[0013] Furthermore, a heating rod is fixedly installed on the inner top wall of the diversion tank.

[0014] (iii) Beneficial effects:

[0015] Compared with existing technologies, the crude oil dehydration device used in this offshore oil drilling operation has the following advantages:

[0016] I. This offshore oil drilling system employs a crude oil dehydration device. By setting up components such as a mixing tank and a settling tank, the crude oil, after being mixed inside the mixing tank, can flow directly into the settling tank for settling. New crude oil is continuously added to the mixing tank, and multiple settling tanks are used in a cycle to keep the mixing process running continuously, thereby increasing efficiency. This solves the problem that existing systems generally allow crude oil to settle directly inside the mixing device after mixing, which renders the mixing device unusable for a period of time, resulting in low crude oil dehydration efficiency.

[0017] Second, this offshore oil drilling rig uses a crude oil dehydration device. By setting up an overtime mechanism and heating rods, the motor can drive the rotating rod to rotate, which in turn drives multiple stirring rods to rotate. This allows the stirring rods to stir the crude oil inside the stirring tank, so that the demulsifier and crude oil are fully mixed. The heating rod is located in the path of the crude oil. After the crude oil flows into the inside of the diversion tank, it can heat the crude oil. Heating helps the water droplets in it to settle and separate more quickly under the action of gravity. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the mixing tank in this utility model;

[0021] Figure 3 This is a cross-sectional view of the blocking plate in this utility model;

[0022] Figure 4 This is a cross-sectional view of the diversion bucket in this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the static bucket in this utility model.

[0024] In the diagram: 1. Mixing tank; 2. Diverting tank; 3. Settling tank; 4. Mixing mechanism; 401. Electric motor; 402. Rotating rod; 403. Mixing rod; 5. Blocking plate; 6. Lifting mechanism; 601. Support frame; 602. Electric telescopic rod; 603. Fixed rod; 7. Heating rod; 8. Connecting pipe. Detailed Implementation

[0025] 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.

[0026] The electric motor 401 and the electric telescopic rod 602 in this utility model are common electrical devices in the prior art, and this application will not elaborate on their models or internal structures.

[0027] like Figure 1-5 As shown, this utility model provides a technical solution: a crude oil dehydration device for offshore oil drilling, including a stirring tank 1, a diversion tank 2 fixedly connected to the lower part of the stirring tank 1, and multiple settling tanks 3 arranged outside the diversion tank 2; a stirring mechanism 4 is arranged inside the stirring tank 1 for stirring and mixing the crude oil; a blocking plate 5 is slidably connected to the inner wall of the diversion tank 2, the upper surface of the blocking plate 5 is in contact with the bottom of the stirring tank 1, and a lifting mechanism 6 is also arranged below the blocking plate 5 for driving the blocking plate 5 to move up and down; a connecting pipe 8 is fixedly connected to the upper part of the settling tank 3, and the end of the connecting pipe 8 away from the settling tank 3 is fixedly connected to the diversion tank 2.

[0028] The mixing tank 1 has an inlet at its upper end, where crude oil and demulsifier can be added. The bottom of the mixing tank 1 has an opening, which is sealed by a plug plate 5, keeping the crude oil inside. The plug plate 5 is conical at the top and annular at the bottom. As the plug plate 5 moves downwards, it moves away from the bottom of the mixing tank 1, allowing the crude oil to flow into the diversion tank 2. A valve is installed on the connecting pipe 8; opening the valve allows the crude oil to flow into the corresponding settling tank 3. The settling tank 3 has an openable top cover, and a discharge pipe is connected to its lower part away from the connecting pipe 8. After oil-water separation, the crude oil can be discharged through the discharge pipe, first releasing the water and then the crude oil for separate collection. By setting up multiple settling tanks 3, the crude oil, after being mixed inside the mixing tank 1, can flow directly into the settling tank 3 for settling. New crude oil is continuously added to the mixing tank 1, keeping the mixing process ongoing and increasing efficiency.

[0029] The stirring mechanism 4 includes a motor 401, which is fixedly installed on the upper surface of the stirring tank 1. The output end of the motor 401 is fixedly connected to a rotating rod 402, the upper end of which is rotatably connected to the stirring tank 1. A stirring rod 403 is fixedly connected to the outer surface of the rotating rod 402. The motor 401 can drive the rotating rod 402 to rotate, and the rotating rod 402 in turn drives multiple stirring rods 403 to rotate, thereby causing the stirring rods 403 to stir the crude oil inside the stirring tank 1, so that the demulsifier and crude oil are fully mixed. The bottom stirring rod 403 is Y-shaped to facilitate stirring of the crude oil near the blockage plate 5.

[0030] The lifting mechanism 6 includes a support frame 601, the upper end of which is fixedly connected to the diversion tank 2, and an electric telescopic rod 602 is fixedly installed in the middle of the support frame 601. The support frame 601 is used to support and fix the diversion tank 2.

[0031] The telescopic end of the electric telescopic rod 602 is fixedly connected to a fixed rod 603. The outer surface of the fixed rod 603 is fixedly connected to the blocking plate 5. When the electric telescopic rod 602 extends or retracts, it can drive the blocking plate 5 to move upward or downward, thereby causing the blocking plate 5 to move closer to or away from the mixing tank 1.

[0032] A heating rod 7 is fixedly installed on the inner top wall of the diversion tank 2. The heating rod 7 contains a heating wire and adopts resistance heating. It can pass through the diversion tank 2 from above and be connected to an external power source. The heating rod 7 is located in the path of the crude oil. After the crude oil flows into the interior of the diversion tank 2, it can heat the crude oil. After flowing into the interior of the settling tank 3, the crude oil has a certain temperature. Heating reduces the viscosity of the crude oil. After the viscosity is reduced, the fluidity of the crude oil is enhanced, which is conducive to the faster sedimentation and separation of water droplets under the action of gravity. At the same time, the specific gravity difference between oil and water increases, which reduces the buoyancy of water droplets in crude oil and makes it easier for water droplets to sink under the action of gravity, thereby achieving oil-water separation.

[0033] Working principle: In use, crude oil and demulsifier are first injected into the mixing tank 1. After the crude oil is mixed by the mixing mechanism 4, the lifting mechanism 6 moves the blocking plate 5 downward, thereby opening the bottom of the mixing tank 1 and allowing the crude oil in the mixing tank 1 to flow into the distribution tank 2. Then, the valve on the corresponding connecting pipe 8 is opened, allowing the crude oil to flow into the settling tank 3 for settling. After that, the lifting mechanism 6 moves the blocking plate 5 back to its original position, sealing the bottom of the mixing tank 1. New crude oil is then added into the mixing tank 1, and the process is repeated. The settling tank 3 is different each time the crude oil is injected. By setting up multiple settling tanks 3, the crude oil can flow directly into the settling tank 3 for settling after being mixed in the mixing tank 1. New crude oil is then added to the mixing tank 1, keeping the mixing process continuous to increase efficiency. Multiple settling tanks 3 are used in a cycle, so that mixing and settling can be carried out simultaneously without affecting each other.

[0034] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A crude oil dehydration device for offshore oil drilling, comprising a mixing tank (1), characterized in that: The lower part of the mixing tank (1) is fixedly connected to the diversion tank (2), and multiple settling tanks (3) are provided on the outside of the diversion tank (2); The mixing tank (1) is equipped with a stirring mechanism (4) for stirring and mixing crude oil. The inner wall of the diversion tank (2) is slidably connected to a block plate (5). The upper surface of the block plate (5) is in contact with the bottom of the mixing tank (1). The lower part of the block plate (5) is also provided with a lifting mechanism (6) for driving the block plate (5) to move up and down. A connecting pipe (8) is fixedly connected to the upper part of the settling tank (3), and the end of the connecting pipe (8) away from the settling tank (3) is fixedly connected to the diversion tank (2).

2. The crude oil dehydration device for offshore oil drilling according to claim 1, characterized in that: The stirring mechanism (4) includes a motor (401), which is fixedly installed on the upper surface of the stirring tank (1), and a rotating rod (402) is fixedly connected to the output end of the motor (401).

3. The crude oil dehydration device for offshore oil drilling according to claim 2, characterized in that: The upper end of the rotating rod (402) is rotatably connected to the mixing tank (1), and a stirring rod (403) is fixedly connected to the outer surface of the rotating rod (402).

4. The crude oil dehydration device for offshore oil drilling according to claim 1, characterized in that: The lifting mechanism (6) includes a support frame (601), the upper end of which is fixedly connected to the diversion tank (2), and an electric telescopic rod (602) is fixedly installed in the middle of the support frame (601).

5. A crude oil dehydration device for offshore oil drilling according to claim 4, characterized in that: The telescopic end of the electric telescopic rod (602) is fixedly connected to a fixed rod (603), and the outer surface of the fixed rod (603) is fixedly connected to the blocking plate (5).

6. A crude oil dehydration device for offshore oil drilling according to claim 1, characterized in that: A heating rod (7) is fixedly installed on the inner top wall of the diversion tank (2).

Images