CN202892983U - Oil-gas-water three-phase separation skid-mounted booster device - Google Patents

Abstract

The utility model relates to an oil-gas-water three-phase separation skid-mounted supercharging device, which mainly comprises a base (1), a three-phase separator (3) and a first external conveying pump (16), wherein the three-phase separator (3) and the first external conveying pump (16) are fixedly arranged on the base (1), and an oil discharge port (19) of the three-phase separator (3) is communicated with an inlet of the first external conveying pump (16); the outlet of the first output pump (16) is communicated with the oil pipeline (20); a safety valve is arranged on the three-phase separator (3); the first output pump (16) is equipped with an explosion-proof electric motor. The device integrates the oil-gas-water three-phase separator and the external pump, has compact equipment and reduces the back-and-forth conveying of water sources.

Description

Oil-gas-water three-phase separation skid-mounted booster device

technical field

The utility model relates to an integrated skid-mounted device for oil-gas-water separation and pressurized delivery of oil well output liquid.

Background technique

At present, in the surface gathering and transportation process of the oil field, the liquid produced by the oil well enters the separation buffer tank of the transfer station after being metered. The separated gas is either used in the station itself or exported to the natural gas processing station. After the pump is pressurized, it is exported to the union station.

In the plane layout of the conventional transfer station, the separation buffer tank is generally placed outdoors, and the outgoing pump is generally placed in the pump room. The two types of equipment are placed separately, which not only increases the construction period of the transfer station and the amount of on-site construction, but also increases This increases the footprint of the transfer station, which is very unfavorable for some oilfields at the edge of cities with tight land use, and hinders the development of urbanized oilfields.

The water-containing crude oil separated from the transfer station is transported to the joint station for dehydration treatment, and the sewage separated from the joint station is then transported back to the oil well for water mixing or re-injected into the formation after treatment. With the extension of oilfield development time, oilfield development has entered a period of high water cut, and a large amount of produced water in the oil well production fluid is first transported to the combined station, and then back to the oil well. The back and forth transport of water increases the construction cost and transport capacity of the water pipeline consumption, which does not meet the requirements of high-efficiency and energy-saving development of oilfields.

Therefore, it is necessary to provide an integrated skid-mounted device that integrates the functions of three-phase separation of oil, gas and water, in-situ water cutting, and pressurized transportation of crude oil (liquid).

Utility model content

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the utility model is to provide a skid-mounted supercharging device for oil-gas-water three-phase separation, which solves the problem that the oil-gas-water separation equipment and the external supercharging equipment are placed separately and occupy a large area. The problem of water injection or water mixing to and from the water source.

In order to solve the above technical problems, the utility model oil-gas-water three-phase separation skid-mounted booster device is mainly composed of a base 1, a three-phase separator 3, and a first external delivery pump 16. The above-mentioned three-phase separator 3, the first external delivery pump 16 is fixedly installed on the base 1, wherein, the above-mentioned three-phase separator 3 is provided with a gas-liquid inlet 6, an oil discharge port 19, an exhaust port 9 and a discharge port 17; the oil discharge port 19 of the above-mentioned three-phase separator 3 and The inlet of the first external delivery pump 16 communicates; the outlet of the first external delivery pump 16 communicates with the oil pipeline 20; the above-mentioned three-phase separator 3 is provided with a safety valve; the above-mentioned first external delivery pump 16 is equipped with an explosion-proof motor.

As a further preferred embodiment of the present invention, the angle between the axis of the three-phase separator 3 and the horizontal plane is 15°-35°.

As a further preferred embodiment of the present invention, the angle between the axis of the three-phase separator 3 and the horizontal plane is 20°-30°.

As a further preferred embodiment of the present invention, the angle between the axis of the three-phase separator 3 and the horizontal plane is 25°.

As another improvement of the present utility model, the above-mentioned three-phase separator 3 is in the form of a cylinder with non-equal diameters. From the bottom to the top, there are a large-diameter cylindrical section 5 , a variable-diameter conical section 7 , and a small-diameter cylindrical section 8 .

As another improvement of the present utility model, the second external delivery pump 11 is installed on the above-mentioned base 1, the inlet of the second external delivery pump 11 communicates with the inlet of the first external delivery pump 16, and the outlet of the second external delivery pump 11 and the The outlets of the first external delivery pump 16 are connected, and the second external delivery pump 11 is equipped with an explosion-proof motor.

The above-mentioned three-phase separator 3 is equipped with an automatic liquid level control system.

The first external delivery pump 16 and the second external delivery pump 11 are equipped with a frequency conversion control system.

Compared with the current technical solution, the utility model has the beneficial effects of the oil-gas-water three-phase separation skid-mounted supercharging device: the oil-gas-water three-phase separation device and the external pump supercharging device are integrated together, the device is compact, and the medium-sized station is saved The floor area is small, which can realize standardized design and modular construction, and can shorten the design and construction period; at the same time, the three-phase separator has the function of cutting water, which can reduce the problem of round-trip transportation of water mixing or water injection.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

Fig. 1 is the front view of the elevation angle type oil-gas-water three-phase separation skid-mounted booster device of the utility model;

Fig. 2 is a top view of the utility model's elevation-type oil-gas-water three-phase separation skid-mounted supercharging device.

Detailed ways

As shown in Figures 1 and 2, the utility model oil-gas-water three-phase separation skid-mounted supercharger mainly includes a base 1, a three-phase separator 3 and two external pumps, that is, the first external pump 16 and the second external pump. Transport pump 11, wherein the base 1 is the carrier of the three-phase separator 3 and the external delivery pump, the three-phase separator 3 is placed on the left side of the base 1, and the first support 13 and the second support 15 support the three-phase separator 3 , the upper and lower ends of the support are respectively welded on the three-phase separator 3 and the base 1, and the central axis of the three-phase separator 3 is along the long side direction of the base 1. Field application shows that the central axis of the three-phase separator 3 and the When the angle between the horizontal plane is 15°-35°, the oil-gas-water separation effect is better, and when the central axis of the three-phase separator 3 forms an angle of 25° with the horizontal plane, the treatment effect is the best.

The three-phase separator 3 is in the form of a non-equal-diameter cylinder. From the bottom to the top, it is a large-diameter cylindrical section 5, a variable-diameter conical section 7, and a small-diameter cylindrical section 8. The safety valve above the three-phase separator 3 can control the three-phase separation. The pressure inside the device 3 is within the design pressure. In this embodiment, the design pressure of the three-phase separator 3 is 0.65 MPa, and the three-phase separator 3 is equipped with an automatic liquid level control system to realize the internal liquid level and oil-water level of the three-phase separator 3. Automatic control of the interface.

The three-phase separator 3 is provided with a manhole 4, a gas-liquid inlet 6, an oil discharge port 19, a drain port 17, and an exhaust port 9, wherein the gas-liquid inlet 6 communicates with the gas-liquid inlet pipeline 14, and the oil discharge port 19 communicates with the oil discharge pipeline. 18 communicates, the drain 17 communicates with the drain pipe 2, the exhaust port 9 communicates with the gas pipeline 10, and a flow meter is installed on the oil discharge pipeline 18 and the gas pipeline 10.

The first external pump 16 and the second external pump 11 are placed side by side on the pump foundation 12 on the right side of the base 1. The two external pumps are transported and the other prepared. The two external pumps are centrifugal pumps, and the two external pumps are centrifugal pumps. Both are equipped with a frequency conversion control system, the axes of the two external pumps are parallel to the long side of the base 1 and the two external pumps are arranged in parallel, the inlets of the two external pumps are connected to the oil discharge pipeline 18 of the three-phase separator 3, The outlets of the two external pumps are connected to the oil pipeline 20 .

The three-phase separator 3 is placed at a certain angle to the horizontal plane, which not only has the advantages of vertical and horizontal separators, but also can make up for the shortcomings of vertical and horizontal separators. Under the action of gravity, the liquid will automatically drain Port 17 moves, so that it is not easy to form a dead zone in the separator, so that the separation space can be fully utilized, which is conducive to improving the efficiency of oil-water separation. Compared with the vertical separator, the elevation three-phase separator increases the floating area of oil droplets , compared with the horizontal three-phase separator, the elevation-angle three-phase separator increases the distance between the outlet and the oil-water interface, which is conducive to improving the water quality of the discharged water. The three-phase separator 3 is placed at an elevation angle, which can reduce the base 1 The length of the device reduces the footprint of the device, and the diameter of the top of the three-phase separator 3 is small, which can reduce the overall height of the device, which is conducive to road transportation.

In this embodiment, the base 1 is the carrier of other equipment, and the oil, gas and water come into the three-phase separator 3 through the gas-liquid inlet pipeline 14 through the gas-liquid inlet 6 of the three-phase separator 3. According to the difference in the density of oil, gas and water, the Under the action of gravity, the oil, gas and water phases are separated in the three-phase separator 3. The inside of the large-diameter cylindrical section 5 and the variable-diameter conical section 7 is mainly an oil-water separation zone, and the inside of the small-diameter cylindrical section 8 is mainly a gas-liquid separation zone. , the manhole 4 is convenient for the staff to enter the internal maintenance of the three-phase separator 3, the gas released from the three-phase separator 3 is discharged into the gas pipeline 10 through the exhaust port 9, and the sewage released from the three-phase separator 3 is discharged through the drain port 17 into the drainage pipe 2, and then enter the water treatment device for re-injection after treatment, or for mixing with water, the oil phase released from the three-phase separator 3 is discharged into the oil discharge pipe 18 through the oil discharge port 19, and the other end of the oil discharge pipe 18 It is connected with the inlets of the first external pump 16 and the second external pump 11, and the two external pumps are placed on the pump foundation 12. The oil phase enters the external pump through the oil discharge pipeline 18, and is pressurized by the external pump. After entering the oil pipeline 20, it is transported to the centralized processing station, and the two external transport pumps are transported and prepared one by one during the production process.

Claims (8)

1. A skid-mounted supercharging device for oil-gas-water three-phase separation, mainly composed of a base (1), a three-phase separator (3), and a first external delivery pump (16). The three-phase separator (3), The first external delivery pump (16) is fixedly installed on the base (1), and is characterized in that: The three-phase separator (3) is provided with a gas-liquid inlet (6), an oil discharge port (19), an exhaust port (9) and a drain port (17); The oil outlet (19) of the three-phase separator (3) communicates with the inlet of the first external pump (16); The outlet of the first external delivery pump (16) communicates with the oil delivery pipeline (20); The three-phase separator (3) is provided with a safety valve; The first external delivery pump (16) is equipped with an explosion-proof motor. 2. The oil-gas-water three-phase separation skid-mounted booster device according to claim 1, characterized in that: the angle between the axis of the three-phase separator (3) and the horizontal plane is 15°-35°. 3. The oil-gas-water three-phase separation skid-mounted booster device according to claim 2, characterized in that: the angle between the axis of the three-phase separator (3) and the horizontal plane is 20°-30°. 4. The oil-gas-water three-phase separation skid-mounted pressurization device according to claim 3, characterized in that: the angle between the axis of the three-phase separator (3) and the horizontal plane is 25°. 5. The oil-gas-water three-phase separation skid-mounted pressurization device according to any one of claims 1-4, characterized in that: the three-phase separator (3) is in the shape of a cylinder with non-equal diameters, and from the bottom to the top are Large-diameter cylindrical section (5), variable-diameter conical section (7), and small-diameter cylindrical section (8). 6. The oil-gas-water three-phase separation skid-mounted booster device according to claim 1, characterized in that: the base (1) is equipped with a second external pump (11), and the second external pump (11) The inlet is connected to the inlet of the first external transfer pump (16), the outlet of the second external transfer pump (11) is connected to the outlet of the first external transfer pump (16), and the second external transfer pump (11) is equipped with an explosion-proof motor. 7. The oil-gas-water three-phase separation skid-mounted pressurization device according to claim 1, characterized in that: the three-phase separator (3) is equipped with an automatic liquid level control system. 8. The oil-gas-water three-phase separation skid-mounted pressurization device according to claim 6, characterized in that: the first external delivery pump (16) and the second external delivery pump (11) are equipped with a frequency conversion control system.