Substitutive internal part of oil chamber of three-phase or four-phase separator

Abstract

The utility model discloses a substitute internal part of an oil chamber of a three-phase or four-phase separator, which comprises an oil outlet formed at the bottom of a main body, a hollow pipe and a flexible pipe, a hole is formed on the hollow pipe, and two ends of the flexible pipe are respectively communicated with the hollow pipe and the oil outlet. According to the replacement internal part of the oil chamber of the three-phase or four-phase separator, the hollow pipe and the flexible pipe are arranged in the main body to replace the oil chamber, the hollow pipe can drive the flexible pipe to passively stretch or contract when floating along with the height of the liquid level, in the process, crude oil in an oil layer can be discharged out of the main body through the hole, the hollow pipe, the flexible pipe and the oil outlet, and the replacement internal part is convenient to use. By means of the arrangement, an oil chamber in the device is omitted, the effective oil-water separation space of the separator is enlarged, and then the processing load of the unit volume of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of separator technology, specifically to a replacement internal component for the oil chamber of a three-phase or four-phase separator. Background Art

[0002] In oil and gas field development and production, the produced fluid from oil wells is usually a mixture of oil, gas, water, and sand. Because they are immiscible and have density differences, three-phase or four-phase separators are often used in surface treatment processes to achieve separation.

[0003] For example, the patent document with authorization announcement number CN212347810U, authorization announcement date January 15, 2021, and titled "A High-Efficiency Three-Phase Separator," includes a housing. Inside the housing, at least two sieve plates perpendicular to the housing axis are fixed from left to right. A sealing plate is fixed inside the housing to the left of the sieve plates, and the internal space of the housing to the left of the sealing plate is an oil chamber. This utility model has a reasonable and compact structure, is easy to use, and the inverted U-shaped water collection pipe replaces the water chamber of existing three-phase separators, maintaining stable dehydration.

[0004] Separators are typically equipped with baffles and oil chambers, allowing crude oil that has crossed the baffles to be discharged through the oil chambers. However, the separate oil chambers not only increase the size and weight of the equipment but also reduce the processing load per unit volume. Utility Model Content

[0005] The purpose of this invention is to provide a replacement internal component for the oil chamber of a three-phase or four-phase separator to address the aforementioned shortcomings in the prior art.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] An alternative internal component for the oil chamber of a three-phase or four-phase separator includes an oil outlet constructed at the bottom of a main body, and also includes a hollow tube and a flexible tube, wherein the hollow tube is constructed with holes and the two ends of the flexible tube are respectively connected to the hollow tube and the oil outlet.

[0008] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator has a hollow tube density lower than that of crude oil.

[0009] The above-mentioned alternative internal component for the oil chamber of a three-phase or four-phase separator, wherein the hole is located at the bottom of the hollow tube.

[0010] The above-mentioned alternative internal component for the oil chamber of a three-phase or four-phase separator, wherein the hole is located within the oil layer.

[0011] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator, wherein the hollow tube is slidably connected within the main body.

[0012] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator includes a slide rod fixed inside the main body, a ring fixed at the end of the hollow tube, and the ring being sleeved on the slide rod.

[0013] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator has a manhole constructed on its main body.

[0014] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator has a produced fluid inlet constructed on its main body.

[0015] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator has a water outlet constructed on its main body.

[0016] The aforementioned alternative internal component for the oil chamber of a three-phase or four-phase separator has a gas outlet constructed on its main body.

[0017] In the above technical solution, the present invention provides a replacement internal component for the oil chamber of a three-phase or four-phase separator. A hollow tube and a flexible tube are set in the main body to replace the oil chamber. When the hollow tube floats with the liquid height, it can drive the flexible tube to passively extend or contract. During the process, the crude oil in the oil layer can be discharged from the main body through the holes, the hollow tube, the flexible tube and the oil outlet. With this setting, the oil chamber in the equipment is eliminated, the effective oil-water separation space of the separator is expanded, and the processing load per unit volume of the equipment is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the hollow tube structure provided in an embodiment of the present utility model;

[0021] Figure 3 A schematic diagram of the slide bar structure provided in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the ring structure provided in an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Main body; 2. Oil outlet; 3. Hollow pipe; 4. Flexible pipe; 5. Extended short pipe; 6. Slide rod; 7. Circular ring; 8. Manhole; 9. Produced fluid inlet; 10. Water outlet; 11. Gas outlet. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1-4 This utility model provides an alternative internal component for the oil chamber of a three-phase or four-phase separator, including an oil outlet 2 constructed at the bottom of the main body 1, and also including a hollow tube 3 and a flexible tube 4. The hollow tube 3 has holes constructed on it, and the two ends of the flexible tube 4 are respectively connected to the hollow tube 3 and the oil outlet 2.

[0027] Specifically, in oil and gas field development and production, the produced fluid from oil wells is usually a mixture of oil, gas, water, and sand. Because they are immiscible and have density differences, three-phase or four-phase separators are often used in surface treatment processes to achieve separation. The main body 1 is generally a tank, and a baffle is installed inside the main body 1 to divide the internal cavity of the main body 1 into an oil chamber and a water chamber. The oil-water mixture is located in the water chamber. In the oil-water mixture, the density of crude oil is less than that of water. After the oil-water mixture stabilizes, the oil layer is above the water layer, allowing the crude oil to pass through the baffle and be discharged through the oil chamber. The above are all existing technologies and will not be elaborated further. The innovation of this utility model embodiment lies in the fact that a hollow tube 3 and a flexible tube 4 are provided inside the main body 1 to replace the oil chamber. That is, no partition is provided inside the main body 1 to maintain a single chamber, in which the mixture of oil, gas, water, and sand is separated. The hollow tube 3 is hollow inside and can float on the oil layer. The hollow tube 3 is oil-resistant, water-resistant, and insoluble in crude oil and water. The flexible tube 4 is a flexible hose made of low-density lightweight material, which has sufficient flexibility, oil resistance, and water resistance. In this way, when the hollow tube 3 floats with the liquid level, it drives the flexible tube 4 to passively extend or contract. During the process, the crude oil in the oil layer can be discharged from the main body 1 through the holes, the hollow tube 3, the flexible tube 4, and the oil outlet 2. In this way, the crude oil located above the water layer can be discharged while eliminating the need for an oil chamber. The advantages are as follows: First, it eliminates the need for an oil chamber in the equipment, thus expanding the effective oil-water separation space of the separator; second, in a four-phase separator, the arrangement of the separator's sand flushing and cleaning internals is smoother, eliminating the need to set up separate chambers for different parts of the equipment, making the sand cleaning operation of the equipment more convenient; third, it saves the need for a separate maintenance manhole 8 for the oil chamber; and fourth, it saves the need for a separate low oil level safety instrument for the oil chamber.

[0028] This utility model provides an alternative internal component for the oil chamber of a three-phase or four-phase separator. A hollow tube 3 and a flexible tube 4 are installed inside the main body 1 to replace the oil chamber. When the hollow tube 3 floats with the liquid level, it can drive the flexible tube 4 to passively extend or contract. During the process, the crude oil in the oil layer can be discharged from the main body 1 through the holes, the hollow tube 3, the flexible tube 4 and the oil outlet 2. This configuration eliminates the need for an oil chamber in the equipment, expands the effective oil-water separation space of the separator, and thus increases the processing load per unit volume of the equipment.

[0029] In another embodiment of this invention, the hollow tube 3 has a density lower than that of crude oil. Specifically, the hollow tube 3 is made of a material with a lower density, which allows it and the flexible tube 4 to float with the liquid surface, thereby ensuring that the hollow tube 3 discharges the crude oil located above the water layer.

[0030] Preferably, the hole is located at the bottom of the hollow tube 3. The hole is located within the oil layer. Specifically, the hole is constructed on the side of the hollow tube 3 that contacts the oil surface, so that the hole can be located within the oil layer; multiple holes are constructed along the axial direction of the hollow tube 3, and the hole diameter is between 10mm and 40mm. The selection of the number of holes and the hole diameter needs to ensure that their equivalent area is greater than the area of ​​the oil outlet 2. This setting can guarantee the oil output of the three-phase or four-phase separator; when crude oil is directly discharged into the hollow tube 3 and the flexible tube 4 through the hole, "gas channeling" is likely to occur at the hole (that is, air will enter the hole and the hollow tube 3), which will cause gas to mix into the oil outlet 2. For this reason, an extended short tube 5 (such as...) can be constructed at the hole. Figure 2 As shown, the connection between the hollow tube 3 and the extended short tube 5 is the location of the hole. The extended short tube 5 is constructed on the hollow tube 3 and communicates with the hole, so that crude oil can be discharged into the hollow tube 3 and the flexible tube 4 through the extended short tube 5 and the hole. This setting allows the extended short tube 5 to extend into the oil layer (the length of the extended short tube 5 needs to be controlled within the thickness range of the oil layer in the separator, and the extended short tube 5 should be kept away from extending into the water layer as much as possible), and the "gas channeling" situation should be avoided as much as possible when crude oil is discharged through the hollow tube 3.

[0031] Furthermore, the hollow tube 3 is slidably connected within the main body 1. Specifically, when the hollow tube 3 floats with the liquid level, it is prone to rotation, which can cause the position of the orifice and the extended short tube 5 to shift, potentially affecting the discharge of crude oil. Therefore, the hollow tube 3 is slidably positioned within the main body 1. The sliding connection between the hollow tube 3 and the main body 1 can be achieved using a chute or slide rail structure. Preferably, a slide rod 6 is fixed within the main body 1, and a ring 7 is fixed to the end of the hollow tube 3, with the ring 7 fitted onto the slide rod 6. The outer diameter of the slide rod 6 matches the inner diameter of the ring 7, allowing the ring 7 to slide along the slide rod 6. Two sets of slide rods 6 and rings 7 are symmetrically arranged to simultaneously guide both ends of the hollow tube 3, thereby limiting the rotation of the hollow tube 3. This ensures that the hollow tube 3 does not move in other directions when it floats up and down with the oil level, thus ensuring that the extended short tube 5 remains within the oil layer as much as possible.

[0032] It should be noted that the flexible tube 4 has a certain range of extension and contraction, which is less than the length of the slide rod 6. That is, there is no need to set a limiting component at the top of the slide rod 6. The range of the hollow tube 3 sliding on the slide rod 6 can be limited by the flexible tube 4.

[0033] In another embodiment of this utility model, a manhole 8 is further provided on the main body 1. A produced fluid inlet 9 is provided on the main body 1. A water outlet 10 is provided on the main body 1. A gas outlet 11 is provided on the main body 1. Specifically, the manhole 8 is constructed on the outer wall of the main body 1, allowing for the inspection and maintenance of components within the main body 1; the produced fluid inlet 9 is used to discharge the produced fluid into the separator for separating the oil, gas, and water mixture; the water outlet 10 is located at the bottom of the main body 1, allowing water below the oil layer to be discharged through the water outlet 10; the gas outlet 11 is located at the top of the main body 1, allowing gas to be discharged through the gas outlet 11. This arrangement allows the separator to complete the separation of the oil, gas, and water mixture, and the main body 1 has only one chamber, thus saving the number of manholes 8 required.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A replacement internal part for the oil chamber of a three-phase or four-phase separator, comprising an oil outlet configured at the bottom of the main body, characterized in that: It also includes a hollow tube and a flexible tube. The hollow tube is provided with holes. Two ends of the flexible tube are respectively connected with the hollow tube and the oil outlet.

2. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The hollow tube has a density less than that of crude oil.

3. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The hole is located at the bottom of the hollow tube.

4. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The holes are located in the oil layer.

5. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The hollow tube is slidably connected in the main body.

6. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 5, characterized in that: A sliding rod is fixed inside the main body, a circular ring is fixed at the end of the hollow tube, and the circular ring is sleeved on the sliding rod.

7. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: A manhole is configured on the main body.

8. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The main body is provided with a produced liquid inlet.

9. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: The main body is configured with a water outlet.

10. A replacement internal part for the oil chamber of a three-phase or four-phase separator according to claim 1, characterized in that: A gas outlet is configured on the main body.

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