KR20150121351A - Separator having sand filtering function - Google Patents

Abstract

Disclosed is a separator with a sand filtering function. The separator, which individually separates sand, water, oil and gas contained in introduced crude oil, comprises: a partitioned wall which is installed to a predetermined length in the longitudinal direction of the separator in an internal space of the separator so that a transport path for crude oil introduced through a crude oil injection pipe forms a U-shape, which at least consists of a first straight section, a curved section and a second straight section; and a first wear panel which is installed at a rear end portion of the curved section or a front end portion of the second straight section to separate and accumulate sand contained in the crude oil.

Description

Separator having sand filtering function "

The present invention relates to a separator having a sand removal function.

The offshore fluids, such as FPSO (Floating Production Storage and Offloading) developed to treat crude oil production, storage and unloading processes on the hull, are used to separate crude oil from gas reservoirs into gas, oil and water And a separator. Generally, the separator uses a specific gravity difference or cyclone to separate the crude oil into gas, oil and water, respectively.

FIG. 1 shows a structure of a separator to which a separation technique using a specific gravity difference is applied.

1, the separator 100 includes a crude oil inflow pipe 105, a weir panel 110, a water discharge pipe 115, a deformer pack 120, an oil discharge pipe 125, A mist extractor 130 and a gas discharge pipe 135. (See Non-Patent Document "Overview of 3-phase Separator" (http://cafe.naver.com/fk/49170).)

The crude oil introduced through the crude oil inlet pipe 105 is stored in the separator 100 and the water contained in the crude oil is separated from the oil component by the specific gravity difference and accumulated in the lower portion of the separator 100 over time.

In the separator 100, a defoamer pack 120 is installed to prevent bubbles on the surface of the crude oil. Oil separated and accumulated on the water component layer overflows the weir panel 110 and accumulates in the oil storage area .

Water and oil are accumulated in the lower part of each divided area with the weir panel 110 as a boundary, and the accumulated water and oil are discharged through the water discharge pipe 115 and the oil discharge pipe 125, respectively.

The gas components having a low volatile point pass through the mist extractor 130 and are discharged through the gas discharge pipe 135 after the water component is removed.

However, the crude oil collected from the reservoir may contain sand in addition to water, oil and gas, but the separator according to the prior art has a limitation in that it can not provide effective separation of sand.

"Overview of the 3-phase Separator" (http://cafe.naver.com/fk/49170)

The present invention is to provide a separator that can induce a meandering stream to effectively separate the sand contained in the imported crude oil and to separate the separated crude oil into water, oil and gas.

The present invention provides a separator having a sand removing function capable of increasing the reliability and service life of the equipment installed at the rear end of the separator by effectively removing the sand contained in the crude oil in the separator and enhancing the reliability of the entire system will be.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a separator for separating sand, water, oil and gas, respectively, contained in the introduced crude oil, wherein the transfer path of the crude oil introduced through the crude oil inflow pipe comprises at least a first straight section, A partition wall provided in the inner space of the separator so as to have a predetermined length in the longitudinal direction of the separator so as to form a U shape having a second straight line section; And a first weir panel mounted at a distal end of the curved section or at a front end of the second straight section so as to separate and accumulate the sand contained in the crude oil.

A first gas discharge pipe for discharging the gas separated from the crude oil is formed on one side of the first straight section and a gas inlet pipe for introducing the gas discharged from the first gas discharge pipe is formed on one side of the second straight section, Can be formed.

A second weir panel for blocking the flow of the crude oil so that water and oil are separated from the crude oil due to the difference in specific gravity; A water discharge pipe for discharging the separated water; And an oil discharge pipe for discharging the oil accumulated in the oil storage area over the first weir panel.

A deformer pack may be installed in each of the first straight line section and the second straight line section.

A mist extractor for removing the water component of the gas separated from the crude oil at the end region of the second straight line section; And a second gas discharge pipe for discharging the gas from which the water component has been removed.

The separating device may further include at least one partition disposed parallel to and spaced apart from the partition, and the transfer path of the introduced crude oil may have a meander shape by a plurality of partition walls provided in an inner space of the separator.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

According to the embodiment of the present invention, it is possible to effectively separate the sand contained in the introduced crude oil by inducing a meandering stream, and to separate the separated crude oil into water, oil and gas.

In addition, the sand contained in the crude oil can be effectively removed from the separator, thereby increasing the reliability and service life of the equipment installed at the rear end of the separator and improving the reliability of the entire system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a configuration of a separator to which a separation technique using a specific gravity difference is applied. FIG.
2 is a perspective top view of a separator according to one embodiment of the invention.
3 is a cross-sectional view of a first region of a separator defined by a partition according to an embodiment of the present invention.
4 is a cross-sectional view of a second region of a separator defined by a partition according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In addition, the terms "part," "unit," "module," "device," and the like described in the specification mean units for processing at least one function or operation, Lt; / RTI >

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a perspective view of a separator according to an embodiment of the present invention, FIG. 3 is a sectional view of a first region of a separator partitioned by a partition according to an embodiment of the present invention, FIG. Sectional view of a second region of a separator defined by a partition according to an embodiment. 3 and 4 illustrate the arrangement direction of the crude oil inflow pipe 105 in the same manner as in FIG. 2 for convenience of explanation and understanding. However, the left and right positions in which the crude oil inflow pipe 105 is disposed may vary depending on the observation direction will be.

FIG. 2 is a top view of the inner structure of the separator 100. Inside the separator 100, a separator 100 is provided to feed the crude oil introduced through the crude oil inflow pipe 105 along a U- 100 are provided with a partition 205 having a predetermined length in the longitudinal direction.

That is, the crude oil introduced by the installed partition 205 is transported along the first straight section ①, the curved section ② and the second straight section ③, and the first weir panel 210 and the second Sand separating and oil separating are performed by the weir panel 220, respectively.

Referring to FIG. 3 showing a first region including a portion of a first straight line section (1) and a curved section (2), on one side of the first region, a defoamer pack 120 ) Can be installed.

The first straight section (1) is separated from the crude oil introduced through the crude oil inflow pipe (105) in order to introduce the gas again through the gas inflow pipe (235) formed on one side of the second straight section A first gas discharge pipe 230 for temporarily discharging the gas is formed.

The reason why the gas is temporarily discharged through the first gas discharge pipe 230 is that the gas separated from the first straight section (①) may excessively re-mix with the liquid phase in the process of passing through the crude oil curved section (2) .

4, in which a second region including a part of a curve section (2) and a second straight section (3) is shown, a second region is provided with a first region for preventing movement of sand along the flow of crude oil A weir panel 210, a defoamer pack 120 to prevent bubbles from forming on the surface of the crude oil, a water separator for separating water and oil from each other by preventing the movement of crude oil, And a mist extractor 130 for removing the water component contained in the gas. The accumulated sand that has been blocked by the first weir panel 210 may be removed by using, for example, a tore jet or the like.

A gas inlet pipe 235 for receiving the gas discharged from the first gas discharge pipe 230 formed in the first straight section ① and a second gas discharge pipe 234 for moving the second gas discharge pipe 235 by the second weir panel 220, A water discharge pipe 115 for discharging the water accumulated in the lower layer by the specific gravity separated from the blocked crude oil, an oil discharge pipe 115 for discharging the oil accumulated in the oil storage area divided and flowing over the second weir panel 220, A second gas discharge pipe 240 formed in an end region of the second straight section 3 for discharging the gas separated from the crude oil may be further formed. The lower part of the gas inlet pipe 235 may be provided with a preventive structure for preventing the flow of crude oil flowing in the curved section (2).

In the present embodiment, the partition wall 205 is provided in the longitudinal direction at the center position, and the crude oil transportation section is formed into a U shape. In the case of a meander (meander) in which water flows in an S shape, Is to exploit the property of eroding the walls of rivers and depositing the material that is transported on the inner side where energy is relatively small.

Although FIG. 2 illustrates an example in which one partition wall 205 is provided to form a U-shaped oil transportation section, it is possible to diversify the crude oil transportation section into an S shape by providing a plurality of partitions 205 Of course.

As described above, the separator 100 according to the present embodiment, to which the principle of the meander flows, is introduced into the crude oil flowing in the first straight section (1) and the curved section (2) through the crude oil inflow pipe (105) The collected sand is collected in the inner region of the curve section (2), and the collected sand is blocked by the first weir panel 210 to accumulate (see FIG. 3). It is natural that the accumulated sand can be removed through a separate procedure.

In this way, the separator 100 according to the present embodiment induces cereal so that the sand contained in the crude oil is accumulated in the inner region of the grain, and the accumulated sand is further moved by the first weir panel 210 It is possible to increase the reliability and the period of use of the equipment installed at the rear end of the separator 100 and to enhance the reliability of the entire system.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

100: separator 105: crude oil inlet pipe
110: Weir panel 115: Water discharge pipe
120: Deformer pack 125: Oil discharge pipe
130: mist extract tractor 135: gas discharge pipe
205: partition wall 210: first weir panel
220: second weir panel 230: first gas discharge pipe
235: gas inlet pipe 240: second gas outlet pipe

Claims (6)

A separator for separating sand, water, oil and gas, respectively, contained in the incoming crude oil,
A length of a predetermined length in the longitudinal direction of the separator is set in the inner space of the separator so that the transfer path of the crude oil flowing through the crude oil inflow pipe forms a U-shape comprising at least a first straight section, a curved section and a second straight section A partition wall; And
And a first weir panel mounted at a distal end of the curved section or at a front end of the second straight section to separate and accumulate sand contained in the crude oil. The method according to claim 1,
A first gas discharge pipe formed on one side of the first straight section to discharge gas separated from the crude oil; And
Further comprising a gas inlet tube formed on one side of the second straight section for receiving gas discharged from the first gas discharge tube. 3. The method according to claim 1 or 2,
In the second straight line section,
A second weir panel for blocking the flow of the crude oil to separate water and oil from the crude oil due to the difference in specific gravity;
A water discharge pipe for discharging the separated water; And
And an oil discharge pipe is formed for discharging oil accumulated in the oil storage area over the first weir panel. The method according to claim 1,
And a deformer pack is installed in each of the first straight line section and the second straight line section. The method according to claim 1,
In the end region of the second straight line section,
A mist extractor for removing water components of the gas separated from the crude oil; And
And a second gas discharge pipe for discharging gas from which the water component has been removed is formed. The method according to claim 1,
Further comprising one or more partition walls spaced apart in parallel to the partition wall,
Wherein the conveying path of the introduced crude oil by the plurality of partitions provided in the inner space of the separator has a meander shape.

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