CN213725250U - Low-interfacial-tension efficient oil-gas-water separation device - Google Patents

Abstract

The utility model relates to an oil gas water separation technical field of oil and natural gas, a high-efficient oil gas water separator of low interfacial tension, it includes the washing room, the coalescence room, disengagement chamber and grease chamber, the washing room top is equipped with the inlet, the fixed intercommunication of entrance point of inlet has separator oil feed air water pipeline, the fixed intercommunication of exit end of inlet has the feed liquor pipe, the lower part is equipped with the liquid distributor in the washing room, the equal fixed mounting in bottom has the sand flushing and discharging ware in coalescence room and disengagement chamber, fixed mounting has the filler in the coalescence room, bottom fixed mounting has emulsified oil collector and water outlet ware in proper order in the disengagement chamber. The utility model has the advantages of reasonable and compact structure, convenient to use, it can effectively reduce the dehydration temperature, shorten the dehydration time, improve separation efficiency, has reached the size that reduces equipment simultaneously, has reduced the engineering investment, practices thrift the beneficial effect of operation energy consumption and improvement oil field development benefit, has safe, laborsaving, simple and convenient, efficient characteristics.

Description

Low-interfacial-tension efficient oil-gas-water separation device

Technical Field

The utility model relates to an oil gas water separation technical field of oil and gas is a high-efficient oil gas water separator of low interfacial tension.

Background

At present, the main principle of the oil-gas-water separation part of oil field produced liquid at home and abroad is gravity settling separation, and the oil-gas-water separation part is separated according to the process requirements by utilizing the density difference of oil-gas-water; the main principle of oil-water separation also includes separation methods such as thermochemical dehydration, electric dehydration, centrifugal dehydration and ceramsite, wherein thermochemical is to adsorb a demulsifier on an oil-water interfacial film at a certain temperature to reduce the tension of an oil-water interface, so that the stability of an emulsion is destroyed, the type of the emulsion is changed, and the purpose of oil-water separation is achieved; the electric dehydration is that water in the water emulsion is aggregated into large drops from micro drops under the action of an electric field, and then the water is precipitated by virtue of the density difference of oil and water; centrifugal dehydration mainly utilizes centrifugal force, oil moves towards an axis to form an inner-rotating oil flow nucleus, water moves towards a wall of the device to form an outer-rotating water flow ring, and oil and water are discharged from different parts respectively to realize oil-water separation; the dehydration of the ceramic particles mainly utilizes the surface hydrophilicity of the ceramic particles to enable water drops to coalesce on the surface of the ceramic particles, and the interface film of the water drops breaks and coalesces under the shearing force of liquid.

The time required by gravity settling dehydration is longer, and the separation efficiency is low; the thermochemical dehydration requires higher temperature and larger dosage of low-temperature demulsifier; the electric dehydrator has higher power consumption and higher cost than the common thermochemical dehydration; the centrifugal dehydration treatment capacity is small, and the dehydration effect on crude oil with high density and serious emulsification is poor; the ceramsite is easy to block and lose efficacy when used for processing dirty or high-wax-content crude oil. The conventional produced liquid oil-gas-water separation application has certain limitation in oil fields.

Disclosure of Invention

The utility model provides a high-efficient oil gas water separator of low interfacial tension has overcome above-mentioned prior art not enough, and it can effectively solve the problem that has the problem that process flow is complicated, dehydration cost and temperature height and separation effect are poor in oil, gas, the separation of water of current oil and gas.

The technical scheme of the utility model is realized through following measure: a low interfacial tension high-efficiency oil-gas-water separation device comprises a washing chamber, a coalescence chamber, a separation chamber and an oil chamber, wherein a right port of the washing chamber is fixedly communicated with a left port of the coalescence chamber, a right port of the coalescence chamber is fixedly communicated with a left port of the separation chamber, a right port of the separation chamber is fixedly communicated with a left port of the oil chamber, a liquid inlet pipe is fixedly installed in the washing chamber, an inlet at the top of the liquid inlet pipe extends out of the washing chamber, an inlet at the top of the liquid inlet pipe is fixedly communicated with a separator oil inlet gas-water pipeline, a liquid distributor is arranged at the lower part in the washing chamber, an outlet at the bottom of the liquid inlet pipe is fixedly communicated with an inlet at the top of the liquid distributor, sand flushing and discharging devices are fixedly installed at the bottoms in the washing chamber, the coalescence chamber and the separation chamber, fillers are fixedly installed at the bottom in the separation chamber, an emulsified oil collector and a water outlet are fixedly communicated with an emulsified oil collecting pipeline, top fixed mounting has mist catching net and oil-water interface to adjust the appearance in the separation chamber, be provided with the baffle that is less than the separation chamber top height between separation chamber and the grease chamber, the scrubbing chamber, the coalescence chamber, the bottom of separation chamber and grease chamber all is equipped with drain and sand discharge, the drain all is fixed the intercommunication has sand washing water branch pipeline, sand discharge all is fixed the intercommunication has sand discharge branch pipeline, grease chamber top fixed mounting has the gas collection package, gas collection package top is equipped with the gas outlet, grease chamber right-hand member lower part is equipped with the oil-out, the fixed intercommunication of oil-out has separation oil pipe.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the washing chamber, the separation chamber and the oil chamber are all fixedly provided with on-site liquid level meters, and the upper part of the left end outside the oil chamber is fixedly provided with a remote liquid level meter.

The drain outlet at the bottom of the oil chamber is fixedly communicated with an oil chamber drain pipeline.

The top parts of the coalescence chamber and the separation chamber are provided with manholes.

The top of the separation chamber is provided with a pressure gauge port, a safety valve port, a manual vent and an oil-water interface regulator port from left to right in sequence.

The pressure gauge port is fixedly communicated with an air outlet pressure stabilizing pipeline, and the safety valve port is fixedly communicated with a safety emptying pipeline.

The sampling port at the bottom of the separation chamber is fixedly communicated with a closed sampling and sewage discharging pipeline.

The outlet of the sand washing water branch pipeline is communicated with a sand washing water main pipeline, and the outlet of the sand discharge branch pipeline is communicated with a sand discharge main pipeline.

The utility model has the advantages of reasonable and compact structure, convenient to use, it can effectively reduce the dehydration temperature, shorten the dehydration time, improve separation efficiency, has reached the size that reduces equipment simultaneously, has reduced the engineering investment, practices thrift the beneficial effect of operation energy consumption and improvement oil field development benefit, has safe, laborsaving, simple and convenient, efficient characteristics.

Drawings

Fig. 1 is a schematic view of the sectional structure of the present invention.

Fig. 2 is a schematic view of the process flow of the present invention.

The codes in the figures are respectively: the device comprises a liquid inlet pipe 1, a liquid distributor 2, a sand flushing and discharging device 3, a sand discharging port 4, an emulsified oil collector 5, a water outlet device 6, an in-situ liquid level meter 7, an oil outlet 8, a gas collecting bag 9, a partition plate 10, a manhole 11, an oil-water interface regulator port 12, a mist catching net 13, a manual vent 14, a safety valve port 15, a pressure gauge port 16, a remote liquid level meter 17, a filler 18, a separator oil inlet gas-water pipeline 19, an emulsified oil collecting pipeline 20, a separation water outlet pipeline 21, an air outlet pressure stabilizing pipeline 22, a sand flushing water branch pipeline 23, a sand discharging branch pipeline 24, a sewage discharge oil chamber pipeline 25, a safety vent pipeline 26, a closed sampling sewage discharge pipeline 27, a sand flushing water main pipeline 28, a sand discharging main pipeline 29, a separation oil outlet pipeline 30, a water washing chamber A, a coalescence chamber B, a separation chamber C and an oil chamber D.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in the attached figure 1, the low interfacial tension high-efficiency oil-gas-water separation device comprises a water washing chamber A, a coalescence chamber B, a separation chamber C and an oil chamber D, wherein the right port of the water washing chamber A is fixedly communicated with the left port of the coalescence chamber B, the right port of the coalescence chamber B is fixedly communicated with the left port of the separation chamber C, the right port of the separation chamber C is fixedly communicated with the left port of the oil chamber D, a liquid inlet is arranged at the top of the water washing chamber A, a liquid inlet pipe 1 is fixedly arranged in the water washing chamber A, the top inlet of the liquid inlet pipe 1 extends out of the water washing chamber A, the top inlet of the liquid inlet pipe 1 is fixedly communicated with a separator oil-gas-water pipeline 19, a liquid distributor 2 is arranged at the lower part in the water washing chamber A, the bottom outlet of the liquid inlet pipe 1 is fixedly communicated with the top inlet of the liquid distributor 2, sand flushers 3 are fixedly arranged at the inner bottoms of the water washing chamber A, the coalescence chamber B and the separation chamber C, a filler 18 is fixedly arranged in the coalescence chamber B, an oil collector 5 and an oil outlet 6 are sequentially and fixedly arranged at the inner bottom of the separation chamber C, the fixed intercommunication of 5 liquid outlets of emulsified oil collector has emulsified oil collecting pipe 20, the fixed intercommunication of 6 liquid outlets of water outlet device has separation outlet conduit 21, top fixed mounting has mist catching net 13 and oil-water interface adjustment appearance in the separator C, be provided with the baffle 10 that is less than separator C top height between separator C and the grease chamber D, wash chamber A, coalescence chamber B, separator C and grease chamber D's bottom all is equipped with drain and sand discharge port 4, the drain all is fixed the intercommunication has sand washing water branch pipeline 23, sand discharge port 4 all is fixed the intercommunication has sand discharge branch pipeline 24, grease chamber D top fixed mounting has gas collection package 9, gas collection package 9 top is equipped with the gas outlet, grease chamber D right-hand member lower part is equipped with oil-out 8, oil-out 8 fixed intercommunication has separation oil pipeline 30.

The utility model discloses utilize synergism such as breakdown of emulsion, physics coalescence, rectification to form low interfacial tension, for the low temperature breakdown of emulsion dehydration has created the condition, improves thermochemical dehydration effect by a wide margin, has reduced the dehydration temperature, has shortened the dehydration time to form a new low temperature, quick, efficient separator. The utility model is suitable for an in the oil and gas trade, need carry out oil, gas, separation of water or oil, separation of water's station such as oil transfer station, processing station, utilize the invention can effectively reduce the dehydration temperature, shortened the dehydration time, improve the efficiency of separation, reduce the size of equipment, reduce the engineering investment, practice thrift the operation energy consumption, improve the oil field development benefit.

According to the needs, the sand discharge ports 44 are arranged in the water washing chamber A, the coalescence chamber B, the separation chamber C and the oil chamber D, so that the equipment can be automatically and forcibly washed on line at regular time, on one hand, the blockage of the liquid distributor 2, the filler 18 and the separation bottom caused by the accumulation of silt is prevented from influencing the dehydration effect, and on the other hand, the manual labor intensity is greatly reduced.

The low interfacial tension high-efficiency oil-gas-water separation device can be further optimized or/and improved according to actual needs:

as shown in the attached figure 1, local liquid level meters 7 are fixedly arranged in the washing chamber A and the oil chamber D, and a remote liquid level meter 17 is fixedly arranged at the upper part of the left end outside the oil chamber D.

When the utility model is used, the local level meters 7 are arranged in the washing chamber A and the separation chamber C, on one hand, the back washing filler 18 can be automatically reminded to be replaced according to the liquid level difference, and on the other hand, the liquid leakage in gas phase is prevented; an in-situ liquid level meter 7 is arranged in the oil chamber D to prevent gas phase oil leakage and gas leakage in oil; the separation chamber C is provided with an oil-water interface regulator for monitoring the height of an oil-water interface, and the height of the oil-water interface can be regulated according to different amounts and different water contents of the incoming liquid, so that the dehydration time is ensured, and oil leakage in water is prevented; separation chamber C emulsified oil automatic collection still can set up automatic control valve on the pipeline 20 is collected to emulsified oil, with the oil-water interface monitoring, the aqueous analysis appearance linkage cooperation automatic discharge emulsified oil of producing oil, reduces the too much influence dewatering effect of airtight processing emulsified oil.

As shown in the attached figure 1, a sewage discharge outlet at the bottom of the oil chamber D is fixedly communicated with a sewage discharge pipeline 25 of the oil chamber D.

As shown in figure 1, the top of the coalescence chamber B and the separation chamber C are both provided with a manhole 11.

As shown in the attached figure 1, a pressure gauge port 16, a safety valve port 15, a manual emptying port 14 and an oil-water interface regulator port 12 are sequentially arranged at the top of the separation chamber C from left to right.

According to the requirement, manholes 11 are arranged at the tops of the coalescence chamber B and the separation chamber C, and a pressure gauge port 16, a safety valve port 15, a manual emptying port 14, an oil-water interface regulator port 12 and the like are arranged at the top of the separation chamber C, so that the safe and stable operation of the device is ensured.

As shown in the attached figure 1, the pressure gauge port 16 is fixedly communicated with an air outlet pressure stabilizing pipeline 22, and the safety valve port 15 is fixedly communicated with a safety vent pipeline 26.

As shown in the attached figure 1, a closed sampling and sewage draining pipeline 27 is fixedly communicated with a sampling port at the bottom of the separation chamber C.

As shown in figure 1, the outlet of the sand washing water branch pipeline 23 is communicated with a sand washing water main pipeline 28, and the outlet of the sand discharge branch pipeline 24 is communicated with a sand discharge main pipeline 29.

The utility model discloses a set up on line and force to dash to arrange sand, emulsified oil automatic discharge, pack 18 and change auxiliary function such as back flush intelligence warning, both solved and aroused key parts such as 18 fillers to block up technical problem such as inefficacy, crude oil emulsification serious dehydration difficulty, pack 18 for high performance coalescence again and popularize and apply and provide new thinking, guaranteed the even running of system simultaneously.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

The utility model discloses best embodiment's use: the gas-producing liquid mixture of the oil well enters the washing chamber A, is pre-separated by a liquid distribution device at the lower part in the washing chamber A, the pre-separated gas flows at the upper part in the washing chamber A, enters the separation chamber C, and is discharged from a gas collection bag 9 at the top of the separation chamber C after the liquid phase carried in the gas is collected by a mist collection net 13; the pre-separated water-containing crude oil enters a coalescence chamber B, when the pre-separated water-containing crude oil flows through a filler 18 in the coalescence chamber B, the fluid is forced to continuously change the flow speed and the flow direction, the collision coalescence probability of water droplets and the collision coalescence probability of the oil droplets and the water droplets are increased, the surface of the filler 18 is continuously adsorbed and coalesced into fine water droplets to destroy an oil-water interface film, the oil-water interface film forms low interface tension under the synergistic action of a demulsifier, the flow field is stabilized by the water-containing crude oil through circular hole rectification and parallel rectification, and the kinetic energy transfer in the rear-end oil-water separation process is reduced; the rectified water-containing crude oil enters a separation chamber C, and oil-water separation is carried out by utilizing gravity settling; fourthly, the upper crude oil separated by the oil-water separation enters an oil chamber D after turning over a clapboard 10, the produced water separated from the lower part in the separation chamber C is discharged through a bottom water collecting pipeline, emulsion in the crude oil in the oil chamber D is discharged after being collected by an emulsified oil collector 5, and the purified crude oil is discharged through an oil outlet 8 of the oil chamber D.

Claims (10)

1. A low interfacial tension high-efficiency oil-gas-water separation device is characterized by comprising a washing chamber, a coalescence chamber, a separation chamber and an oil chamber, wherein a right port of the washing chamber is fixedly communicated with a left port of the coalescence chamber, a right port of the coalescence chamber is fixedly communicated with a left port of the separation chamber, a right port of the separation chamber is fixedly communicated with a left port of the oil chamber, a liquid inlet pipe is fixedly arranged in the washing chamber, an inlet at the top of the liquid inlet pipe extends out of the washing chamber, an inlet gas-water pipeline of a separator is fixedly communicated with an inlet at the top of the liquid inlet pipe, a liquid distributor is arranged at the lower part in the washing chamber, an outlet at the bottom of the liquid inlet pipe is fixedly communicated with an inlet at the top of the liquid distributor, sand flushing and discharging devices are fixedly arranged at the bottoms in the washing chamber, the coalescence chamber and the separation chamber, a filler is fixedly arranged in the separation chamber, an emulsified oil collector and a water outlet are fixedly communicated with an emulsified oil collecting pipeline, the fixed intercommunication of water outlet ware liquid outlet has separation outlet conduit, top fixed mounting has mist catching net and oil-water interface regulator in the separator, mist catching net export is fixed to be communicated and is given vent to anger steady voltage pipeline, be provided with the baffle that is less than the separator top height between separator and the grease chamber, the washroom, the coalescence room, the bottom of separator and grease chamber all is equipped with drain and sand discharge outlet, the drain is all fixed to be communicated and is had sand washing water branch pipeline, sand discharge outlet all is fixed to be communicated and has sand discharge branch pipeline, grease chamber top fixed mounting has the gas collection package, the gas collection package top is equipped with the gas outlet, grease chamber right-hand member lower part is equipped with the oil-out, the oil-out is fixed to be communicated and is had separation oil pipeline.

2. The low interfacial tension high efficiency oil-gas-water separation device of claim 1, wherein the washing chamber, the separation chamber and the oil chamber are all fixedly provided with on-site level gauges, and the upper part of the left end outside the oil chamber is fixedly provided with a remote level gauge.

3. The low interfacial tension high efficiency oil-gas-water separating device as claimed in claim 1 or 2, wherein the drain outlet at the bottom of the oil chamber is fixedly communicated with an oil chamber drain pipeline.

4. The low interfacial tension high efficiency oil-gas-water separator as claimed in claim 1 or 2, wherein the top of the coalescence chamber and the separation chamber are provided with manholes.

5. The low interfacial tension high efficiency oil-gas-water separator as claimed in claim 3, wherein the top of the coalescence chamber and the separation chamber are provided with manholes.

6. The low interfacial tension high efficiency oil-gas-water separation device according to claim 1, 2 or 5, characterized in that the top of the separation chamber is provided with a pressure gauge port, a safety valve port, a manual vent port and an oil-water interface regulator port in sequence from left to right.

7. The low interfacial tension high efficiency oil-gas-water separation device according to claim 3, characterized in that the top of the separation chamber is provided with a pressure gauge port, a safety valve port, a manual vent port and an oil-water interface regulator port in sequence from left to right.

8. The low interfacial tension high efficiency oil-gas-water separation device according to claim 6, wherein the pressure gauge port is fixedly communicated with an air outlet pressure stabilizing pipeline, and the safety valve port is fixedly communicated with a safety vent pipeline.

9. The low interfacial tension high efficiency oil-gas-water separation device according to claim 1 or 2 or 5 or 7 or 8, characterized in that the sampling port at the bottom of the separation chamber is fixedly communicated with a closed sampling blow-off pipeline.

10. The low interfacial tension high efficiency oil-gas-water separation device according to claim 1 or 2 or 5 or 7 or 8, characterized in that the outlet of the sand washing water branch pipe is communicated with a sand washing water main pipe, and the outlet of the sand discharge branch pipe is communicated with a sand discharge main pipe.

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