Multiphase separator

 

The invention relates to the field of oil production and is designed for multiphase separation of gas-liquid mixtures containing mechanical impurities. To facilitate the design of the separator and improving the quality of separation of a multiphase mixture of gas, oil, water and mechanical impurities. The inventive separator includes a housing with connections for inlet of gas-liquid mixture and removal of oil, water, gas and mechanical impurities. Inside the housing has a hollow perforated auger installed obliquely to the axis of the screw spirals. They form a flow channel provided with slit grooves, the flow divider with water, mechanical impurities, which is mounted coaxially with the casing with the formation of an annular chamber for the withdrawal of mechanical impurities. On the upper end of the hollow perforated screw and the upper end of the flow divider of water with mechanical impurities equipped with a conical protective walls. They form the receiving cavity and serve to prevent entrainment of liquid with mechanical impurities and the supply of this fluid in the spiral auger. Between the pipes to drain the oil and water has a flow divider of the water with oil. The divider is made as guhagar>

The invention relates to the field of oil production and is designed for multiphase separation of gas-liquid mixtures containing mechanical impurities.

Known getopacity separator, comprising a housing, a container for solids, hollow perforated auger, pipe drain, forming a hollow auger channel for exhaust gas flow divider [Ed. mon. The USSR № 1677282, CL E 21 In 43/38, 1991].

The closest to the technical nature of the claimed object is a multiphase separator, comprising a housing with a device for supplying a gas-liquid mixture that is installed in the housing hollow perforated auger with spirals made with an inclination to the axis of the screw and forming a flow channel, a nozzle for discharge of liquid, made in the form of a hollow cylinder with a slit slits along generatrix of the cylindrical surface of the flow divider, provided the receiving cone of the camera to output mechanical impurities [ed. mon. The USSR № 1629507, CL E 21 In 43/38, 1991].

The disadvantage of this unit is the design complexity and low quality of separation.

The invention is aimed at simplifying the design of the separator and improving the quality of separation of a multiphase mixture of gas, oil, water and Mei entering the gas-liquid mixture and removal of oil, water, gas and mechanical impurities, which is installed inside the hollow perforated auger installed obliquely to the axis of the screw spirals, forming a flow channel provided with slit grooves, the flow divider with water, mechanical impurities, which is mounted coaxially with the casing with the formation of an annular chamber for the withdrawal of mechanical impurities, on the upper end of the hollow perforated screw and the upper end of the flow divider of water with mechanical impurities equipped with safety walls, between the pipes for removal of oil and water has a flow divider water with oil, made in the form of a blind glass, and in the lower part of these pipes are made slot of the slot.

Appropriate safety partitions to perform cone.

In addition, the spiral turns of the screw are made with decreasing diameter and step down.

Slot for withdrawal of mechanical impurities from the flow divider in the annular chamber is a spiral with a pitch angle of the slits is equal to the half angle of the spiral turns of the screw.

The drawing schematically illustrates a multiphase separator.

The separator includes a housing 1 with field installed drain the oil, water, gas and mechanical impurities, respectively, and placed inside a hollow perforated auger 7 forming a flow channel of the spiral coils 8. For a more complete spin flow and more efficient separation of gas-liquid mixture phase coils are made with decreasing diameter and step down. Between the pipe 3 to drain the oil and hollow perforated auger 7 is formed an annular channel 9 for removal of the gas. Spiral coils 8 are installed at an angle to the axis of the screw with the formation of pockets for trapping gases under the tilted coils, while the angle of the nozzle to enter SHC equal to the angle of inclination of the spiral turns to the axis of the separator. The separator is equipped with a flow divider fluid with mechanical impurities 10 in the form of a hollow cylinder with a spiral slits 11 to output mechanical impurities in the annular chamber 12 formed between the housing 1 and the flow divider 10, and the angle of inclination of these slots 11 is half of the angle of spiral coils 8 of the screw. Between the pipes to drain the oil and water has a flow divider of the liquid 13 in the form of a blind glass, with the nozzles 3 and 4 are slots 14 and 15 for withdrawal of oil and water. On top koncki 16 and 17, which form the receiving cavity of the housing of the separator, providing optimal incoming direction for separating gas-liquid mixture.

The separator operates as follows.

Gas-liquid mixture is injected at a set angle to the axis of the separator tangential inlet 2 into the housing 1 of the separator, and the stream SHC twists, safety partitions 16 and 17 forming the receiving cavity of the housing of the separator, to prevent entrainment of liquid with mechanical impurities and ensure its submission to the spiral coils 8 of the hollow perforated auger 7, where the centrifugal force caused by passing the mixture through a flow channel formed by the spiral coils 8 of the screw, there is a separation of phases: liquid and solids wrung out to the periphery of the flow channel and the gas rushes to the axis of the screw 7. This creates a vacuum, and the gas passes through the holes in the pockets formed under the inclined spiral screw up through the annular channel 9, is withdrawn from the separator through pipe 5. During the rotation of the fluid flow in the flow channel mechanical impurities are discarded by the centrifugal force set obliquely to the axis of the auger spiral input of mechanical impurities and the pipe 6 are removed from the separator. Fluid after exiting the flow channel of the screw 7 passes through the flow divider 13, while the bottom of the flow divider, made in the form of a blind glass, provides its separation into oil and water densities and directs the oil through slots 14 in the pipe 3, and the water - through slots 15 in the pipe 4.

The proposed multi-phase separator has a simple structure compared with the prototype and allow more effectively and efficiently separating a multiphase mixture of gas, oil, water and mechanical impurities.

Claims

1. Multiphase separator, comprising a housing with connections for inlet of gas-liquid mixture and removal of oil, water, gas and mechanical impurities, which is installed inside the hollow perforated auger installed obliquely to the axis of the screw spirals, forming a flow channel provided with slit grooves, the flow divider with water, mechanical impurities, which is mounted coaxially with the casing with the formation of an annular chamber for the withdrawal of mechanical impurities, characterized in that on the upper end of the hollow perforated screw and the upper end of the flow divider of water with mechanical impurities installed safety peregi the supply of this fluid in the spiral auger, between the pipes to drain the oil and water has a flow divider water with oil, made in the form of a blind glass, and in the lower part of these pipes are made slot of the slot.

2. Multiphase separator under item 1, characterized in that the safety partitions are made conical.

3. Multi-phase separator according to any one of paragraphs.1 and 2, characterized in that the spiral turns of the screw are made with decreasing diameter and step down.

4. Multi-phase separator according to any one of paragraphs.1-3, characterized in that the slot for withdrawal of mechanical impurities from the flow divider in the annular chamber is a spiral with a pitch angle of the slits is equal to the half angle of the spiral turns of the screw.

 

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EFFECT: higher efficiency.

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