RU94292U1 - SEPARATION EJECTOR INSTALLATION - Google Patents

Abstract

 1. Separation-ejector installation for stepwise separation of a gas-oil-water mixture containing a three-phase separator of a gas-oil mixture of a first separation stage with nozzles: mixture inlet, gas, oil and water outlet with oil residues, gas outlet nozzle connected to a gas pipeline going to the consumer , oil outlet pipe - with a pipeline connected through the first choke to a gas-liquid separator of the second stage, connected to the oil pipeline to the consumer and gas through the gas pipeline - with a pipe for gas inlet into the liquid-gas ejector , the outlet pipe of water with oil residues from the separator of the first stage is connected through a water line with suction to the pump unit, the discharge of the pump unit is connected to the pipe of the water inlet to the ejector, the diffuser of the latter is connected via a hydraulic line to the gas-liquid separator for separating the mixture after the ejector, equipped with water outlets to a pipeline for injecting water and gas into a gas pipeline to a consumer, characterized in that an intermediate water accumulator is installed through a second choke in the water line in front of the suction in the pump unit - a three-phase water-oil-gas mixture separator equipped with nozzles: mixture inlet, gas, oil and purified water, and a gas outlet pipe through a third choke and a gas pipeline connected to a gas pipeline going from the gas-liquid separator of the second stage to the gas inlet pipe to the liquid-gas the ejector, the oil outlet pipe is connected by a hydraulic line to the pipeline going from the oil outlet pipe from the three-phase separator of the first separation stage after the first throttle to the gas-liquid separator of the second stage, and the outlet pipe is cleaner

Description

The utility model relates to equipment for the preparation of: separation of a mixture of gas, oil and water and compression (compression) of gas and can be used in oil, gas and other industries.

A well-known analogue of the proposed utility model: pump-ejector installation according to the invention autosvid. No. 1439292, F04F 5/54, publ. 11/23/88, Bull. No. 43, comprising a supply pipe, a first separator, a liquid-gas ejector with a pipe for supplying a gaseous passive medium, a pump, the output of which is connected via an hydraulic nozzle to the active nozzle of the ejector, and the input to the first separator, and a second separator connected by a bypass pipe with a regulating element to the first separator and connected by gas to the pipe for supplying a gaseous passive medium of the ejector, the ejector output being connected to the first separator. The hydraulic line is equipped with a heat exchanger, and the supply pipe is connected to a bypass pipe.

Common to the analogue and the proposed device are signs:

- inlet pipe;

- high-pressure (first) and low-pressure (second) separators;

- liquid-gas ejector with a low-pressure gas supply pipe;

- a pump, the output of which is connected via a hydraulic line to the nozzle of a high-pressure liquid in a liquid-gas ejector.

The disadvantages of the prototype are:

- there is no separation of the gas-oil-water mixture in the first separator, from which water is used as a working fluid in a liquid-gas ejector;

- there is no re-separation of the water-oil-gas mixture in the second separator, which reduces the residual oil content in the water and allows you to recycle the water and accumulate it in the right amount by feeding from a separate source.

A known prototype of the proposed utility model: pump-ejector installation according to the invention autosvid. No. 1475276, F04F 5/48, according to the application 3844026 / 25-06 dated 11.26.84, a chipboard comprising a pump, a degassing separator, a liquid-gas vacuum ejector, the passive nozzle of which is connected to a source of pumped gaseous medium and a degassing separator, and a three-component separator with an outlet pipe connected to a degassing separator, an ejector outlet and, with a line, to a pump outlet. The installation is equipped with a second three-component separator and a liquid-gas injection ejector, the active nozzle of which is connected to the pump outlet, the passive nozzle to the pipeline, the diffuser to the second separator, the latter is connected to the degassing separator and the active nozzle of the vacuum ejector, and the supply and exhaust lines are connected to the main adsorbing liquid.

Common to the prototype and the proposed device are signs:

- pump;

- degassing separator;

- a liquid-gas ejector, the passive nozzle of which is connected to the source of the pumped gaseous medium;

- three-phase separator.

The disadvantages of the prototype is the lack of:

- re-separation of the water-oil-gas mixture in a three-phase separator, leading to additional purification of water from oil;

- recirculation into a three-phase separator of purified water after the ejector;

- cooling water by replenishing with cold water from a separate source.

The technical task of the utility model is the post-treatment of water from oil, the recirculation of water after a three-phase separator, and the partial replacement of water with increasing temperature from heating by the pump unit.

The stated technical problem is solved in that a separation-ejector installation for stepwise separation of a gas-oil-water mixture, containing a three-phase separator of the first separation stage with nozzles: mixture inlet, separate outlet of gas, oil and water with oil residues, the gas outlet nozzle is connected to the gas pipeline going to the consumer, the oil outlet pipe - with a pipeline going to the gas-liquid separator of the second stage through the first throttle, oil in the gas-liquid separator of the second stage is degassed and sent through the pipe to the consumer, and the gas is directed through the gas pipe to the gas inlet port to the liquid-gas ejector, the water outlet pipe with oil residues from the first stage separator is directed through the water line to the pump unit connected to the water inlet port to the ejector, the diffuser of the latter is connected by hydraulic lines with a separator for separating the gas-liquid mixture after the ejector, water from it is sent to the hydraulic line for injection into the reservoir and into the gas pipeline to the consumer. In the water line in front of the pumping unit, an intermediate water accumulator is installed through the second choke, a three-phase separator equipped with pipes: the inlet of the water-oil-gas mixture, separate gas, oil and purified water, and the gas outlet pipe is connected to the gas pipeline through the third choke and gas pipeline, going from the gas-liquid separator of the final separation stage to the gas inlet port to the liquid-gas ejector, the oil branch pipe is connected by a hydraulic line to the pipeline going from the three-phase oil branch pipe the separator of the first stage of separation into the gas-liquid separator of the second stage after the first throttle, and the outlet for purified water is connected through a pipeline to the pump unit and with a hydraulic line for pumping water into the reservoir, water from the separator for separating the gas-liquid mixture after the ejector is connected by a water recirculation line to the nozzle for the water- oil-gas into the water accumulator is a three-phase separator and is connected with the hydroline for pumping water into the reservoir. For water supply of the pump unit, a separate container is used containing cold purified water and connected by a pipeline to the pump unit. To supply water from a separate tank to the pump suction unit inlet, a gas-liquid mixture separation separator after the ejector is connected through gas to a separate tank by a gas pipeline.

The figure shows a separation-ejector installation for stepwise separation of a gas-oil-water mixture. The installation contains a three-phase separator 1 of the first separation stage with nozzles: 2 - mixture inlet, 3 - gas outlet, 4 - oil and 5 - water with oil residues. The pipe 3 of the gas outlet is connected to the gas pipeline 6 to the consumer, the pipe 4 of the oil outlet is connected to the pipe 7, connected through the first throttle 8 with a gas-liquid separator 9 of the second stage. The oil output from the separator 9 of the second stage is connected to the pipeline 10 to the consumer, and the gas is connected to the gas pipe 11 to the pipe 12 of the gas inlet to the liquid-gas ejector 13. The pipe 5 of the water outlet with oil residues from the separator 1 of the first stage is connected via a water line 14 to by the inlet 15 of the pump unit 16, the water outlet 17 connected to the pipe 18 of the water inlet to the ejector 13, the diffuser 19 of the latter is connected via a hydraulic line 20 to the gas-liquid separator 21 for separating the mixture after the ejector 13, provided with water outlets into the formation and gas injection pipe 22 in the pipeline 23 to the consumer. In the water line 14 in front of the inlet 15, an intermediate water accumulator — a three-phase separator 25, equipped with nozzles: 26 —inlet of the water-oil-gas mixture, outlet 27 —gas, 28 — oil and 29 — purified water, is installed through the second choke 24 into the pump unit 16 moreover, the gas outlet pipe 27 through the third throttle 30 and the gas pipe 31 is connected to the gas pipe 11, which goes from the gas-liquid separator 9 of the second stage to the gas pipe 12 of the gas inlet to the liquid-gas ejector 13. The oil pipe 28 is connected by a hydraulic line 32 to the pipeline 7, which goes from nipple 4 outlet and one of the three phase separator of the first separation stage after the first throttle 8 in the gas-liquid separator second stage 9, and the purified water outlet conduit 29 is connected via conduit 33 with the suction 15 of the pump unit 16 and to the conduit 34 water injection. The pipe 22 for water outlet from the gas-liquid mixture separation separator 21 after the ejector 13 is provided with a water recirculation line 35 into the pipe 26 of the inlet of the water-oil-gas mixture into the water accumulator — a three-phase separator 25. A separate tank 36 containing water is used to feed water to the pump unit 16 connected by pipeline 37 to the inlet 15 of the pump unit 16. To supply water from a separate container 36 to the inlet 15 of the pump unit 16, a gas-liquid mixture separation separator 21 after the ejector 13 is connected to a separate gas tank 36 gadfly 38.

Separation-ejector installation works as follows.

The reservoir mixture, gas-oil-water, enters the three-phase separator 1 of the first separation stage through the nozzle 2 of the mixture inlet, in the separator 1 the mixture is divided into three phases: gas that exits through the nozzle 3 of the gas outlet, oil that exits through the nozzle 4 of the outlet oil, and water that exits through the outlet pipe 5 of the water outlet. Gas from the pipe 3 enters through the pipeline 6 to the consumer. Oil after pipe 4 enters through pipeline 7 through the first throttle 8 to the gas-liquid separator 9 of the second stage, oil in the gas-liquid separator 9 of the second stage, is degassed and sent through the pipeline 10 to the consumer. And the gas is directed through the gas pipeline 11 to the pipe 12 for entering the gas into the liquid-gas ejector 13. The pipe 5 for leaving the water with oil residues from the separator 1 of the first stage is sent through the water line 14 to the inlet 15 of the pump unit 16, discharge 17 connected to the pipe 18 for entering the water into the ejector 13. High-pressure water is mixed with low-pressure gas, intermediate pressure is established in the diffuser 19 of the ejector 13, and the gas-liquid mixture through the diffuser 19 enters the hydraulic line 20, from it to the separator 21, where it is separated into water and gas. Water and gas from the separator 21 are sent respectively to the hydraulic line 22 for injection into the reservoir and through the gas pipeline 23 to the consumer. In the water line 14, in front of the inlet 15 of the pump unit 16, a second choke 24 is installed, through which a three-phase mixture passes, consisting mainly of water, where the pressure decreases, remaining higher than after the first choke 8. Next, an intermediate water accumulator is installed - a three-phase separator 25 of the water mixture -oil-gas, where the mixture entering the pipe 26 is separated into 3 phases, the outlet pipes: 27 - gas outlet, 28 - oil outlet and 29 - purified water outlet. The gas through the third throttle 30 and the gas pipe 31 is connected to the gas pipe 11 coming from the gas-liquid separator 9 of the end separation stage. The mixture enters through the nozzle 12 into the liquid-gas ejector 13, the separator 21, from there the liquid flows into the pipeline 23 into the reservoir, and the gas flows into the gas pipeline 23 to the consumer. From the separator 25, through the pipe 28, the oil is sent to the hydraulic line 32 into the pipeline 7, after the first throttle 8. Through the pipe 29 and the pipe 33, purified water is sent to the inlet 15 of the pump unit 16 and the excess water to the hydraulic line 34 of the water injection into the reservoir. The water heated in the pump unit 16 is from the separator 21 and is sent to the water recirculation hydraulic line 35 to the pipe 26 of the inlet of the water-oil-gas mixture into the water accumulator 25, where it is mixed with the incoming liquid from the separator 1, being cooled by it. From a separate tank 36 connected with the suction to the pump unit 16, the purified, cooled water is fed through the pipeline 37. The feed is made to reduce the heating of the water in the pump unit, by the signal of the temperature sensor located in the water zone in the three-phase separator 25, when the water temperature is exceeded , over the established norm, for example, 60 ° C, and stops when lowering to the established norm, for example, 30 ° C. The displacement of water from the tank 36 occurs by squeezing the gas from the separator 21, through the pipe 38.

Thus, by introducing a three-phase separator of the water-oil-gas mixture between the three-phase gas-oil-water separator of the first separation stage and the pump supplying water to the liquid-gas ejector, the water is additionally purified from oil and gas. Due to the recirculation of water from the gas-liquid separator, located at the outlet of the ejector, to the three-phase separator, the separator is replenished with water, which is necessary in case of less water consumption at the outlet of the three-phase separator than the flow rate of the pump unit. By feeding purified, chilled water from a separate tank, the temperature of the water heated in the pump unit is regulated. The displacement of water from a separate tank occurs due to the gas having a higher pressure than the liquid coming from the separator.

Claims (3)

1. Separation-ejector installation for stepwise separation of a gas-oil-water mixture containing a three-phase separator of a gas-oil mixture of a first separation stage with nozzles: mixture inlet, gas, oil and water outlet with oil residues, gas outlet nozzle connected to a gas pipeline going to the consumer , oil outlet pipe - with a pipeline connected through the first choke to a gas-liquid separator of the second stage, connected to the oil pipeline to the consumer and gas through the gas pipeline - with a pipe for gas inlet into the liquid-gas ejector , the outlet pipe of water with oil residues from the separator of the first stage is connected through a water line with suction to the pump unit, the discharge of the pump unit is connected to the nozzle of the water inlet to the ejector, the diffuser of the latter is connected via a hydraulic line to the gas-liquid separator for separating the mixture after the ejector, equipped with water outlets to a pipeline for pumping water and gas into a gas pipeline to a consumer, characterized in that an intermediate water accumulator is installed through a second choke in the water line in front of the suction in the pumping unit - a three-phase water-oil-gas mixture separator equipped with nozzles: mixture inlet, gas, oil and purified water, and the gas outlet pipe through the third choke and gas pipe is connected to a gas pipeline going from the gas-liquid separator of the second stage to the gas inlet pipe to the liquid-gas the ejector, the oil outlet pipe is connected by a hydraulic line to the pipeline going from the oil outlet pipe from the three-phase separator of the first separation stage after the first throttle to the gas-liquid separator of the second stage, and the outlet pipe is cleaned water is connected through a pipeline with an inlet to the pumping unit and with a pipeline for pumping water into the reservoir, the water outlet pipe from the gas-liquid mixture separation separator after the ejector is equipped with a water recirculation line to the inlet of the water-oil-gas mixture into the water accumulator - a three-phase separator. 2. The separation and ejector installation according to claim 1, characterized in that it is equipped with a separate tank containing water, connected by a pipeline to the suction of the pump unit. 3. The separation and ejector installation according to claim 2, characterized in that the gas-liquid separator is connected to a separate gas container by a gas pipeline.