Water-diversion oil drawing tank

Abstract

The utility model provides a water-diversion oil drawing tank. The water-diversion oil drawing tank comprises an elevated tank body, a cyclone separator is arranged outside the upper part of the gas-liquid inlet of the elevated tank body and is used for separating oil and water; the cyclone separator is connected to the oil-water diverter through a first connecting pipe and a second connecting pipe, and the oil-water diverter is arranged in the gas-liquid inlet, communicated with the first water storage chamber and the oil storage chamber in the elevated tank body and used for conveying separated oil and water into the corresponding first water storage chamber and oil storage chamber. According to the device, oil-water separation can be realized, oil and water can be separately stored, and the separately stored oil can be independently heated, so that energy is effectively saved, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the petroleum industry, and more particularly to a water-separating oil tank. Background Technology

[0002] In crude oil production, oil wells that are remote or geographically restricted from having pipelines built are typically collected by using elevated tanks to store oil and water, which are then periodically heated and transported to the unloading point for entry into the system.

[0003] To ensure the smooth unloading of crude oil at the unloading point after long-distance transportation, elevated tanks need to continuously heat the oil and water to a relatively high temperature for a period of time before loading. There are two methods for supplying energy for heating: one is heating with associated gas in a heater, and the other is heating with an electric heater. Because collecting associated gas requires a large-scale gas separation and collection process, many elevated tanks currently use electric heating. This method consumes a significant amount of electricity, with most of the electricity used for heating the water supply, as water has twice the heat capacity of oil. Utility Model Content

[0004] One of the purposes of this application is to provide a water-separated oil tank, which aims to solve the problem of time-consuming and energy-intensive co-heating of oil and water in existing elevated tanks for storing crude oil.

[0005] The technical solution of this application is:

[0006] A water-separating oil tank includes an elevated tank body; a cyclone separator is provided on the upper part of the gas-liquid inlet of the elevated tank body, the cyclone separator being used to separate oil and water; the cyclone separator is connected to an oil-water separator through a first connecting pipe and a second connecting pipe, the oil-water separator being disposed inside the gas-liquid inlet and connected to a first water storage chamber and an oil storage chamber inside the elevated tank body, respectively, for conveying the separated oil and water into the corresponding first water storage chamber and oil storage chamber.

[0007] As one technical solution of this application, a first partition plate and a second partition plate are provided at intervals in the inner cavity of the elevated tank body. The first partition plate and the second partition plate divide the inner cavity of the elevated tank body into a first water storage chamber, an oil storage chamber and a second water storage chamber in sequence. The top of the first water storage chamber is connected to the top of the oil storage chamber. The top of the oil storage chamber is connected to the top of the second water storage chamber. The bottom of the first water storage chamber is connected to the bottom of the second water storage chamber. The oil diverter is located between the tops of the first water storage chamber and the oil storage chamber, and the water outlet is connected to the first water storage chamber and the oil outlet is connected to the oil storage chamber.

[0008] As one technical solution of this application, a second connecting pipe is connected between the bottom of the first water storage chamber and the bottom of the second water storage chamber. The two ends of the second connecting pipe pass through the opposite sides of the lower part of the oil storage chamber and are respectively connected to the bottom of the first water storage chamber and the bottom of the second water storage chamber.

[0009] As one technical solution of this application, the first partition plate is installed on the bottom plate of the elevated tank body, and its top is spaced apart from the top plate of the elevated tank body; the second partition plate is installed on the bottom plate of the elevated tank body, and its top is spaced apart from the top plate of the elevated tank body.

[0010] As one technical solution of this application, the first partition plate and the second partition plate are arranged in parallel at intervals.

[0011] As one technical solution of this application, an openable and closable sampling port is provided on the top of the oil storage chamber.

[0012] As one technical solution of this application, both the first water storage chamber and the second water storage chamber have manholes, and the top of the second water storage chamber is provided with an openable and closable vent, in which a flame arrester is installed; the bottom of the second water storage chamber is provided with an openable and closable water outlet.

[0013] As one technical solution of this application, the oil-water separator includes a housing; an L-shaped oil-gas separation pipe, an L-shaped baffle, an L-shaped water separation pipe, and a horizontal baffle are sequentially and spaced apart in the cavity of the housing; the L-shaped oil-gas separation pipe and the L-shaped water separation pipe are arranged opposite to each other; the L-shaped baffle is arranged facing the L-shaped oil-gas separation pipe and its horizontal end is connected to an inner wall of the housing, and the L-shaped baffle is located obliquely below the L-shaped oil-gas separation pipe; the horizontal baffle is arranged horizontally and one end is connected to the middle of another inner wall of the housing; the depth of the bottom outlet of the L-shaped water separation pipe is... The depth is greater than the bottom outlet depth of the L-shaped oil-gas diversion pipe; the bottom of the shell has a first outlet located directly below the L-shaped oil-gas diversion pipe, the first outlet is connected to an upward-opening U-shaped pipe, the opening of the U-shaped pipe is connected to a regulating pipe for supplying water to the first water storage chamber, the regulating pipe is equipped with a regulating valve, the regulating valve is used to regulate the oil-water interface in the shell; a second outlet is opened at the upper part of the side wall of the shell near the L-shaped water diversion pipe, the second outlet is connected to the oil storage chamber; the oil outlet height of the second outlet is higher than the water outlet height of the regulating pipe.

[0014] As one technical solution of this application, a first inlet and a second inlet are provided at intervals on the top of the shell. The first inlet is connected to the oil and gas outlet of the cyclone separator through an oil and gas conveying pipe, and the second inlet is connected to the water outlet of the cyclone separator through a water conveying pipe. The L-shaped oil and gas diversion pipe is connected to the first inlet and is close to the same side of the shell as the first inlet. The L-shaped water diversion pipe is connected to the second inlet and is close to the same side of the shell as the second inlet. The L-shaped oil and gas diversion pipe and the L-shaped water diversion pipe are arranged opposite to each other.

[0015] The beneficial effects of this application are:

[0016] In the water-separating oil-carrying tank of this application, the internal structure of the elevated tank is designed with the energy-saving concept of heating the oil but not the water in mind. The incoming fluid from the well is first transported into a hydrocyclone separator for powerful centrifugal separation of oil, gas, and water. The separated oil and water then enter an oil-water separator, where they undergo rapid separation and settling via L-shaped oil-gas separation pipes, L-shaped baffles, L-shaped water separation pipes, and horizontal baffles. The L-shaped and horizontal baffles further accelerate the separation and settling of oil and water, achieving the effect of water entering the first water storage chamber and oil entering the oil storage chamber. Finally, the oil in the oil storage chamber is heated separately before being transported. Therefore, this device achieves the effect of oil-water separation and separate storage. It can heat the oil separately, and the hydrocyclone separator enables rapid separation of oil, water, and gas, preparing for the next step of automatic oil-water separation. Furthermore, the oil-water separator ensures that the separated oil and water automatically separate and enter their respective storage chambers. Furthermore, water is stored at both ends of the elevated tank body and connected to it by a second connecting pipe, while oil is stored in the middle. This ensures that the center of gravity remains stable regardless of the oil-water ratio, guaranteeing safe oil loading. Therefore, this device enables rapid oil-water separation, significantly reduces the cost of oil heating, saves time and labor, is energy-efficient, and lowers costs. It also ensures the stability of the elevated tank's center of gravity at all times when oil and water are present, guaranteeing safety and reliability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a water-separating oil tank provided in an embodiment of this application;

[0019] Figure 2A schematic diagram of a cyclone separator provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram showing the connection between the cyclone separator and the oil-water separator provided in the embodiments of this application.

[0021] Icons: 1- Elevated tank body; 2- First connecting pipe; 3- Cyclone separator; 4- Oil-water separator; 5- First water storage chamber; 6- Oil storage chamber; 7- Second water storage chamber; 8- First partition plate; 9- Second partition plate; 10- Second connecting pipe; 11- Sampling port; 12- Manhole; 13- Flame arrester; 14- Shell; 15- L-shaped oil-gas separation pipe; 16- L-shaped baffle; 17- L-shaped water separation pipe; 18- Horizontal baffle; 19- First outlet; 20- Second outlet; 21- Regulating valve; 22- U-shaped pipe; 23- Regulating pipe; 24- Second connecting pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this application and to simplify 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 application.

[0026] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Example:

[0030] Please refer to Figure 1 (Refer to) Figures 2 to 3This application provides a water-separation oil-carrying tank, which mainly includes an elevated tank body 1. A cyclone separator 3 is installed above the gas-liquid inlet of the elevated tank body 1, used to separate oil and water. The cyclone separator 3 is connected to an oil-water separator 4 via a first connecting pipe 2 and a second connecting pipe 24. The oil-water separator 4 is located inside the gas-liquid inlet and is connected to a first water storage chamber 5 and an oil storage chamber 6 inside the elevated tank body 1, respectively, to transport the separated oil and water into the corresponding first water storage chamber 5 and oil storage chamber 6. By first transporting the well fluid into the cyclone separator 3 for powerful oil-gas-water centrifugal separation, the separated oil and water enter the oil-water separator 4 for rapid separation and sedimentation, thereby achieving the effect of water entering the first water storage chamber 5 and oil entering the oil storage chamber 6. Finally, the oil in the oil storage chamber 6 is heated separately before being transported. Meanwhile, a first partition plate 8 and a second partition plate 9 are spaced apart in the inner cavity of the elevated tank body 1, dividing the inner cavity of the elevated tank body 1 into a first water storage chamber 5, an oil storage chamber 6, and a second water storage chamber 7 in sequence; the top of the first water storage chamber 5 is connected to the top of the oil storage chamber 6; the top of the oil storage chamber 6 is connected to the top of the second water storage chamber 7; the bottom of the first water storage chamber 5 is connected to the bottom of the second water storage chamber 7; the oil diverter 4 is located between the tops of the first water storage chamber 5 and the oil storage chamber 6, with its water outlet connected to the first water storage chamber 5 and its oil outlet connected to the oil storage chamber 6. Furthermore, the first partition plate 8 and the second partition plate 9 are arranged parallel to each other; the first partition plate 8 is installed on the bottom plate of the elevated tank body 1, with its top spaced apart from the top plate of the elevated tank body 1; the second partition plate 9 is installed on the bottom plate of the elevated tank body 1, with its top spaced apart from the top plate of the elevated tank body 1. An openable and closable sampling port 11 is provided on the top of the oil storage chamber 6; manholes 12 are provided on both the first water storage chamber 5 and the second water storage chamber 7, and an openable and closable vent is provided on the top of the second water storage chamber 7, with a flame arrester 13 installed inside the vent; an openable and closable water outlet is provided at the bottom of the second water storage chamber 7.

[0031] It should be noted that in this embodiment, a second connecting pipe 10 connects the bottom of the first water storage chamber 5 and the bottom of the second water storage chamber 7. The two ends of the second connecting pipe 10 pass through opposite sides of the lower part of the oil storage chamber 6 and are connected to the bottoms of the first water storage chamber 5 and the second water storage chamber 7, respectively. Therefore, by storing water at both ends of the elevated tank body 1 and connecting them via the second connecting pipe 10, while storing oil in the middle, the center of gravity remains stable regardless of the oil-water ratio, ensuring safe oil loading of the elevated tank. Furthermore, the elevated tank body 1 only heats the oil, significantly reducing the electricity consumption and operating costs of the elevated tank.

[0032] It should be noted that the cyclone separator 3 can be replaced with different models to adapt to the on-site liquid flow rate.

[0033] Furthermore, the oil-gas separator 4 includes a housing 14; wherein, a first inlet and a second inlet are spaced apart on the top of the housing 14, and L-shaped oil-gas separation pipes 15, L-shaped baffles 16, L-shaped water separation pipes 17 and horizontal baffles 18 are sequentially spaced apart in the cavity; simultaneously, the first inlet is connected to the oil-gas outlet of the cyclone separator 3 through an oil-gas conveying pipe, and the second inlet is connected to the water outlet of the cyclone separator 3 through a water conveying pipe; furthermore, the L-shaped oil-gas separation pipes 15 and 16 are connected to the first inlet, and the L-shaped oil-gas separation pipes 17 and 18 are connected to the water outlet of the cyclone separator 3. The first inlet and the second inlet are both located on the same side of the housing 14; the L-shaped water diversion pipe 17 is connected to the second inlet, and both the L-shaped water diversion pipe 17 and the second inlet are located on the same side of the housing 14; the L-shaped oil-gas diversion pipe 15 is arranged opposite to the L-shaped water diversion pipe 17; and the L-shaped baffle 16 is arranged facing the L-shaped oil-gas diversion pipe 15 and its horizontal end is connected to one inner wall of the housing 14, and the L-shaped baffle 16 is located diagonally below the L-shaped oil-gas diversion pipe 15; the horizontal baffle 18 is arranged horizontally and one end is connected to the other inner wall of the housing 14. The middle part is located between the lower part of the L-shaped water diversion pipe 17 and the top of the shell 14; the depth of the bottom outlet of the L-shaped water diversion pipe 17 is deeper than the depth of the bottom outlet of the L-shaped oil and gas diversion pipe 15; the bottom of the shell 14 has a first outlet 19 located directly below the L-shaped oil and gas diversion pipe 15, the first outlet 19 is connected to an upward-opening U-shaped pipe 22, the opening of the U-shaped pipe 22 is connected to a regulating pipe 23 for conveying water into the first water storage chamber 5, the regulating pipe 23 is equipped with a regulating valve 21, the regulating valve 21 is used to adjust The oil-water interface inside the casing 14 is designed to ensure that oil and water are fully separated, allowing water to continuously separate and enter the first water storage chamber 5, and oil to continuously separate and enter the oil storage chamber 6. A second outlet 20 is provided on the side wall of the casing 14 near the L-shaped water flow pipe 17, and the second outlet 20 is connected to the oil storage chamber 6. Furthermore, the oil outlet height of the second outlet 20 is much higher than the water outlet height of the regulating pipe 23, so as to ensure that oil can continuously separate and enter the oil storage chamber 6, and water can continuously separate and enter the first water storage chamber 5.

[0034] The oil and gas flowing out of the hydrocyclone separator 3 enter the inner cavity of the shell 14 through the L-shaped oil and gas diversion pipe 15, and the water flowing out of the water outlet of the hydrocyclone separator 3 enters the inner cavity of the shell 14 through the L-shaped water diversion pipe 17. Due to the different specific gravities of oil and water, and because the depth of the bottom outlet of the L-shaped water diversion pipe 17 is greater than the depth of the bottom outlet of the L-shaped oil and gas diversion pipe 15, and because an L-shaped baffle 16 is installed diagonally below the L-shaped oil and gas diversion pipe 15, the water diversion pipe... The horizontal baffle 18 of the 17 allows for rapid separation and sedimentation of oil and water. The separated oil flows out from the second outlet 20 into the oil storage chamber 6, while the separated water flows from the first outlet 19 at the bottom of the shell 14 through the U-shaped pipe 22 and the regulating pipe 23, and then flows out into the first water storage chamber 5. Furthermore, by adjusting the oil-water interface through the regulating valve 21, the oil and water can be fully separated, and water can be continuously separated and enter the first water storage chamber 5, while oil can be continuously separated and enter the oil storage chamber 6.

[0035] In summary, the water-separation oil tank of this application addresses the energy-saving concept of heating the oil but not the water by designing the internal structure of the elevated tank. The incoming fluid from the well is first transported into a hydrocyclone separator 3 for powerful centrifugal separation of oil, gas, and water. The separated oil and water then enter an oil-water separator 4 for rapid separation and sedimentation, achieving the effect of water entering the first water storage chamber 5 and oil entering the oil storage chamber 6. Finally, the oil in the oil storage chamber 6 is heated separately before being transported. Therefore, this device achieves the effect of separating and storing oil and water separately. It can heat the oil separately, and the hydrocyclone separator 3 achieves rapid separation of oil, water, and gas, preparing for the next step of automatic oil-water separation. Furthermore, the oil-water separator 4 ensures that the separated oil and water can automatically separate and enter their respective storage chambers. In addition, water is stored at both ends of the elevated tank body 1, connected by a second connecting pipe 10, while oil is stored in the middle. This ensures that the center of gravity remains stable and stable even with different oil-water ratios, guaranteeing safe oil loading in the elevated tank. It is evident that this device can achieve rapid separation of oil and water, and greatly reduces the cost of heating oil. It saves time and effort, is energy-saving and cost-effective, and can ensure the stability of the center of gravity of the elevated tank when oil and water are present, making it safe and reliable.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water-separating oil tank, characterized in that, The system includes an elevated tank body; a cyclone separator is installed on the upper part of the gas-liquid inlet of the elevated tank body, the cyclone separator being used to separate oil and water; the cyclone separator is connected to an oil-water separator via a first connecting pipe and a second connecting pipe, the oil-water separator being installed inside the gas-liquid inlet and connected to a first water storage chamber and an oil storage chamber inside the elevated tank body, respectively, for conveying the separated oil and water into the corresponding first water storage chamber and oil storage chamber.

2. The water-separating oil tank according to claim 1, characterized in that, The inner cavity of the elevated tank body is provided with a first partition plate and a second partition plate at intervals, which sequentially divide the inner cavity of the elevated tank body into a first water storage chamber, an oil storage chamber, and a second water storage chamber; the top of the first water storage chamber is connected to the top of the oil storage chamber; the top of the oil storage chamber is connected to the top of the second water storage chamber; the bottom of the first water storage chamber is connected to the bottom of the second water storage chamber; the oil diverter is located between the tops of the first water storage chamber and the oil storage chamber, and the water outlet is connected to the first water storage chamber and the oil outlet is connected to the oil storage chamber.

3. The water-separating oil tank according to claim 2, characterized in that, A second connecting pipe connects the bottom of the first water storage chamber and the bottom of the second water storage chamber. The two ends of the second connecting pipe pass through the opposite sides of the lower part of the oil storage chamber and are respectively connected to the bottom of the first water storage chamber and the bottom of the second water storage chamber.

4. The water-separating oil tank according to claim 2, characterized in that, The first partition plate is installed on the bottom plate of the elevated tank body, and its top is spaced apart from the top plate of the elevated tank body; the second partition plate is installed on the bottom plate of the elevated tank body, and its top is spaced apart from the top plate of the elevated tank body.

5. The water-separating oil tank according to claim 2, characterized in that, The first partition plate and the second partition plate are arranged parallel to each other at intervals.

6. The water-separating oil tank according to claim 1, characterized in that, The oil storage chamber is equipped with an openable and closable sampling port on its top.

7. The water-separating oil tank according to claim 2, characterized in that, Both the first and second water storage chambers have manholes, and the top of the second water storage chamber is provided with an openable and closable vent, in which a flame arrester is installed; the bottom of the second water storage chamber is provided with an openable and closable water outlet.

8. The water-separating oil tank according to claim 1, characterized in that, The oil-gas splitter includes a housing; within the cavity of the housing, L-shaped oil-gas splitting pipes, L-shaped baffles, L-shaped water splitting pipes, and horizontal baffles are sequentially and spaced apart; the L-shaped oil-gas splitting pipes and the L-shaped water splitting pipes are arranged opposite to each other; the L-shaped baffles face the L-shaped oil-gas splitting pipes and are horizontally connected to one inner wall of the housing, with the L-shaped baffles positioned diagonally below the L-shaped oil-gas splitting pipes; the horizontal baffles are horizontally arranged and one end is connected to the middle of another inner wall of the housing; the bottom outlet of the L-shaped water splitting pipes is deeper than the L-shaped... The depth of the bottom outlet of the oil-gas diversion pipeline; the bottom of the shell has a first outlet located directly below the L-shaped oil-gas diversion pipeline, the first outlet is connected to an upward-opening U-shaped pipe, the opening of the U-shaped pipe is connected to a regulating pipe for supplying water to the first water storage chamber, the regulating pipe is equipped with a regulating valve, the regulating valve is used to regulate the oil-water interface in the shell; the upper part of the side wall of the shell has a second outlet near the L-shaped water diversion pipeline, the second outlet is connected to the oil storage chamber; the oil outlet height of the second outlet is higher than the water outlet height of the regulating pipe.

9. The water-separating oil tank according to claim 8, characterized in that, The top of the shell is provided with a first inlet and a second inlet spaced apart. The first inlet is connected to the oil and gas outlet of the cyclone separator through an oil and gas conveying pipe, and the second inlet is connected to the water outlet of the cyclone separator through a water conveying pipe. The L-shaped oil and gas diversion pipe is connected to the first inlet and is close to the same side of the shell as the first inlet. The L-shaped water diversion pipe is connected to the second inlet and is close to the same side of the shell as the second inlet. The L-shaped oil and gas diversion pipe and the L-shaped water diversion pipe are arranged opposite to each other.

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