CN206554913U - A kind of oil field shaft mouth oil removing is removed sand skid integrated purification device - Google Patents

Abstract

The utility model discloses a skid-mounted integrated separation device for removing oil and sand at the wellhead of an oil field, comprising an oil-water-sand three-phase separation bin, an oil-water-sand three-phase separator arranged on the oil-water-sand three-phase separation bin, and an oil-water-sand three-phase separator It is fixed on the top of the oil-water-sand three-phase separation chamber through bracket support. The oil-water-sand three-phase separation chamber includes a sand chamber, an oil chamber and a water chamber. The warehouse; the oil-water-sand three-phase separator includes a desander, an oil-water separator and a fixed buffer tank, and the desander, the oil-water separator and the fixed buffer tank are respectively connected through various pipelines. The utility model integrates the oil-water-sand three-phase separation bin and the oil-water-sand three-phase separator into a whole, and at the same time, the sand bin, the oil bin and the water bin in the oil-water-sand three-phase separation bin are independent of each other, which not only ensures efficient separation of crude oil At the same time, the whole device has high integration, small footprint, low energy consumption, and reduces the high cost of product development.

Description

A skid-mounted integrated separation device for oil and sand removal at the wellhead of an oil field

technical field

The utility model belongs to the technical field of multiphase separation, in particular to a skid-mounted integrated separation device for removing oil and sand at the wellhead of an oil field.

Background technique

In the current crude oil extraction industry, there are only a handful of oil fields that have undergone primary extraction, while secondary and tertiary extraction technologies have been widely used. However, the oil produced by the secondary and tertiary mining technologies contains impurities such as water and sand particles, and the separation of impurities is a key technology for improving efficiency.

Most of the existing oilfield combined stations adopt the precipitation separation method to separate impurities such as water and solid particles in the crude oil. However, the large storage tanks used in the precipitation separation are expensive, occupy a large area, and take a long time to settle, while the economic benefits are not high.

Therefore, it is necessary to develop a new integrated separation device to separate impurities such as water and sand grains in the extracted oil, thereby improving economic benefits.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a skid-mounted integrated separation device for removing oil and sand at the wellhead of an oil field.

In order to achieve the above object, the utility model adopts the following technical solutions:

A skid-mounted integrated separation device for removing oil and sand at the wellhead of an oil field, comprising an oil-water-sand three-phase separation chamber and an oil-water-sand three-phase separator arranged on the oil-water-sand three-phase separation chamber, and the oil-water-sand three-phase separator is supported by a bracket It is fixed on the top of the oil-water-sand three-phase separation chamber. The oil-water-sand three-phase separation chamber includes a sand chamber, an oil chamber and a water chamber. An independent chamber; the oil-water-sand three-phase separator includes a desander, an oil-water separator and a fixed buffer tank, and the desander, the oil-water separator and the fixed buffer tank are connected through respective pipelines.

Preferably, the crude oil input pipeline is externally connected to the desander, the sand outlet of the desander is communicated with the fixed buffer tank, the oil-water separation port of the desander is communicated with the oil-water separator, and the The bottom of the oil-water separator is led out of the corresponding sand bin through a pipeline and provided with a sand outlet control port, and the bottom of the oil-water separator is led out through a pipeline to a corresponding water bin with a water outlet control port, and the top of the oil-water separator is drawn out through a pipeline. Oil outlet control port.

Preferably, the end sidewall of the sand bin is respectively provided with a sand discharge port, an oil discharge port connected to the oil bin through a pipeline, and a water discharge port connected to the water bin through another pipe.

Preferably, a water outlet for removing accumulated water in the sand bin is also provided on the end side wall of the sand bin.

Preferably, the sand discharge port, the oil discharge port and the water discharge port are all disposed close to the bottom of the end side wall of the sand bin, and the water outlet is disposed close to the upper middle of the end side wall of the sand bin.

Preferably, a discharge pipe is connected to the top of the oil-water separator, and a discharge valve is arranged on the discharge pipe.

Preferably, a pressure gauge is provided on the pipeline communicating between the desander and the oil-water separator.

Preferably, the fixed buffer tank is further provided with a drainage port, and the drain port is arranged near the upper part of the fixed buffer tank.

Preferably, a drainage groove is provided along the upper side wall of the sand bin leading to the water bin.

Preferably, an oil storage tank is connected to the oil discharge port.

Preferably, a water storage tank is connected to the water outlet.

The skid-mounted integrated separation device for oil and sand removal at the wellhead of the oil field provided by the utility model, the separation process is as follows:

The crude oil output from the wellhead of the oil field enters the desander through the crude oil input pipeline and reaches the desander for solid-liquid separation. The separated sand is transported to the fixed buffer tank through the sand outlet of the desander, and then discharged through the sand outlet control port. In the sand bin, after sedimentation and water removal, it is finally discharged from the sand outlet, and the water precipitated in the sand bin enters the water bin along the drainage groove during this process; while the liquid oil and water separated by the desander are passed through the sand removal The oil-water separation port of the oil-water separator is sent to the oil-water separator, and then through the centrifugal separation of the oil-water separator. The light component oil separated in this process is discharged from the oil outlet control port connected to the top of the oil-water separator to the oil tank. The separated heavy component water is discharged from the water outlet control port connected to the bottom of the oil-water separator to the water tank. Further, the oil in the oil tank is transported to the oil storage tank through the oil discharge port, and the water in the water tank passes through The drain port feeds into the water storage tank.

The skid-mounted integrated separation device for oil and sand removal at the wellhead of the oil field provided by the utility model integrates the oil-water-sand three-phase separation bin and the oil-water-sand three-phase separator into a whole, and at the same time the sand bin and the oil bin in the oil-water-sand three-phase separation bin The water tank and the water tank are independent of each other, which not only ensures the orderly separation of crude oil, but also the whole device has high integration, small footprint, low energy consumption, high reaction efficiency, and simple operation, which reduces the high cost of product development. Has high benefit.

Description of drawings

Fig. 1 is a side-view structure schematic diagram of a skid-mounted integrated separation device for removing oil and sand at the wellhead of the oilfield of the utility model;

Fig. 2 is a top view structure schematic diagram of the skid-mounted integrated separation device for removing oil and sand at the wellhead of the oilfield of the utility model.

Among them: 1. Crude oil input pipeline, 2. Desander, 3. Fixed buffer tank, 31 drainage port, 4. Pressure gauge, 5. Oil-water separator, 51. Empty pipeline, 6. Sand bin, 61. Sand output control Port, 7, oil tank, 71, oil outlet control port, 8, water tank, 81, water outlet control port, 9, sand discharge port, 10, oil discharge port, 11, drain port, 12, water outlet, 13, drainage groove.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1-2, a skid-mounted integrated separation device for removing oil and sand at the wellhead of an oil field includes an oil-water-sand three-phase separation chamber and an oil-water-sand three-phase separator arranged on the oil-water-sand three-phase separation chamber. Specifically, The oil-water-sand three-phase separator is supported and fixed on the top of the oil-water-sand three-phase separation bin, that is, the oil-water-sand three-phase separation bin and the oil-water-sand three-phase separator are an integrated body, and the oil-water-sand three-phase separation bin includes three bins The three chambers are sand chamber 6, oil chamber 7 and water chamber 8 from left to right, that is, sand chamber 6, oil chamber 7 and water chamber 8 are integrated into a whole and separated by partitions to form mutually independent The warehouse; the oil-water-sand three-phase separator includes a desander 2, an oil-water separator 5 and a fixed buffer tank 3, and the desander 2, the oil-water separator 5 and the fixed buffer tank 3 are respectively connected through pipelines.

Preferably, the crude oil input pipeline 1 communicates with the desander 2, the sand outlet of the desander 2 communicates with the fixed buffer tank 3, the oil-water separation port of the desander 2 communicates with the oil-water separator 5, and the outlet of the fixed buffer tank 3 The bottom of the oil-water separator 5 is led out of the corresponding sand bin 6 through a pipeline and is provided with a sand outlet control port 61. The bottom of the oil-water separator 5 is led out through a pipeline and the corresponding water bin 8 is provided with a water outlet control port 81. The top of the oil-water separator 5 is led out of the corresponding oil bin through a pipeline. 7 is provided with an oil outlet control port 71.

Preferably, a sand discharge port 9, an oil discharge port 10 connected to the oil tank 7 through a pipeline, and a water discharge port 11 connected to the water tank 8 through another pipeline are respectively provided on the end sidewall of the sand tank 6.

Preferably, the side wall at the end of the sand bin 6 is also provided with a water outlet 12 for removing accumulated water in the sand bin.

Preferably, the sand discharge port 9, the oil discharge port 10 and the water discharge port 11 are all arranged close to the bottom of the end side wall of the sand bin 6, and the water outlet 12 for removing accumulated water in the sand bin is located close to the upper middle of the end side wall of the sand bin 6 set up.

Preferably, a discharge pipe 51 is connected to the top of the oil-water separator 5 , wherein a discharge valve is arranged on the discharge pipe 51 .

Preferably, a pressure gauge 4 is provided on the pipeline communicating between the desander 2 and the oil-water separator 5 .

Preferably, the fixed buffer tank 3 is further provided with a drain port 31 , and the drain port 31 is arranged near the upper part of the fixed buffer tank 3 .

Preferably, a drainage groove 13 is provided along the upper side wall of the sand bin 6 leading to the water bin 8 .

Preferably, an oil storage tank is connected to the oil discharge port 10 .

Preferably, a water storage tank is connected to the water outlet 11 .

The skid-mounted integrated separation device for oil and sand removal at the wellhead of the oil field provided by the utility model, the separation process is as follows:

The crude oil output from the wellhead of the oil field enters the crude oil input pipeline 1 and reaches the desander 2 for solid-liquid separation. The separated sand is transported to the fixed buffer tank 3 through the sand outlet of the desander 2, and then passes through the sand outlet. The control port 61 is discharged into the sand bin 6, and then through sedimentation and dewatering, it is finally discharged from the sand outlet 9, and the water precipitated in the sand bin 6 enters the water bin 8 along the drainage groove 13 during this process; while the sand removal The liquid oil and water separated by the device 2 are sent to the oil-water separator 5 through the oil-water separation port of the desander 2, and then go through the centrifugal separation of the oil-water separator 5. The oil outlet control port 71 on the top of the separator 5 is discharged to the oil tank 7, while the separated heavy component water is discharged from the water outlet control port 81 connected to the bottom of the oil-water separator 5 to the water tank 8. Further, the oil tank 7 The oil in the tank is delivered to the oil storage tank through the oil discharge port 10, and the water in the water tank 8 is delivered to the water storage tank through the drain port 11.

The skid-mounted integrated separation device for oil and sand removal at the wellhead of the oil field provided by the utility model integrates the oil-water-sand three-phase separation bin and the oil-water-sand three-phase separator into a whole, and at the same time the sand bin and the oil bin in the oil-water-sand three-phase separation bin The water tank and the water tank are independent of each other, which not only ensures the orderly separation of crude oil, but also the whole device has high integration, small footprint, low energy consumption, high reaction efficiency, and simple operation, which reduces the high cost of product development. Has high benefit.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "bottom", "top", "upper", "middle", "lower", "left", "right" etc. are based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (10)

1. The skid integrated purification device 1. a kind of oil field shaft mouth oil removing is removed sand, it is characterized in that, including profit sand three phase separation storehouse and set The profit sand three phase separator on profit sand three phase separation storehouse is put, the profit sand three phase separator is supported by support and fixed Top in profit sand three phase separation storehouse, the profit sand three phase separation storehouse includes sand storehouse, bunker and sump, the Sha Cang, oil Storehouse and sump are to separate to form separate bin by dividing plate in the middle of one overall；The profit sand three phase separator includes Desander, oil water separator and fixed surge tank, the desander, oil water separator and fixed surge tank pass through each pipeline respectively Connection.
2. The skid integrated purification device 2. oil field shaft mouth oil removing as claimed in claim 1 is removed sand, it is characterized in that, outside the desander Crude oil input channel is connect, the sand export of the desander is connected with fixed surge tank, water-oil separating mouthful and the oil of the desander Separator is connected, and drawing correspondence sand storehouse by pipeline from the bottom of the fixed surge tank is provided with control mouth of shaking out, from institute The bottom for stating oil water separator is provided with water outlet control mouth by pipeline extraction correspondence sump, from the top of the oil water separator Correspondence bunker is drawn by pipeline and is provided with fuel-displaced control mouth.
3. The skid integrated purification device 3. oil field shaft mouth oil removing as claimed in claim 1 or 2 is removed sand, it is characterized in that, the sand storehouse End sidewalls on be respectively arranged with sand removing hole and oil discharge outlet by pipeline communication bunker and connected by another pipeline The discharge outlet in water flowing storehouse.
4. The skid integrated purification device 4. oil field shaft mouth oil removing as claimed in claim 3 is removed sand, it is characterized in that, the end in the sand storehouse The delivery port for excluding sand storehouse ponding is additionally provided with the wall of portion side.
5. The skid integrated purification device 5. oil field shaft mouth oil removing as claimed in claim 4 is removed sand, it is characterized in that, the sand removing hole, Oil discharge outlet and discharge outlet are close to set below the end sidewalls in sand storehouse, delivery port top in the end sidewalls in sand storehouse Set.
6. The skid integrated purification device 6. oil field shaft mouth oil removing as claimed in claim 1 is removed sand, it is characterized in that, the water-oil separating It is connected at the top of device on exhausting pipeline, the exhausting pipeline and is provided with atmospheric valve.
7. The skid integrated purification device 7. oil field shaft mouth oil removing as claimed in claim 1 is removed sand, it is characterized in that, the desander with Pressure gauge is provided with the pipeline connected between oil water separator.
8. The skid integrated purification device 8. oil field shaft mouth oil removing as claimed in claim 1 is removed sand, it is characterized in that, the fixed buffering Draining hole is additionally provided with tank, the draining hole is set close to fixed surge tank top.
9. The skid integrated purification device 9. oil field shaft mouth oil removing as claimed in claim 1 is removed sand, it is characterized in that, along the sand storehouse Above the wall of side drainage trough is provided with towards between sump.
10. The skid integrated purification device 10. oil field shaft mouth oil removing as claimed in claim 3 is removed sand, it is characterized in that, the oil discharge outlet Place's connection, which has to connect at oil storage tank, the discharge outlet, water tank.