AU2020378113A1 - A gas-liquid separation device for co2 flooding produced fluid - Google Patents
A gas-liquid separation device for co2 flooding produced fluid Download PDFInfo
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- AU2020378113A1 AU2020378113A1 AU2020378113A AU2020378113A AU2020378113A1 AU 2020378113 A1 AU2020378113 A1 AU 2020378113A1 AU 2020378113 A AU2020378113 A AU 2020378113A AU 2020378113 A AU2020378113 A AU 2020378113A AU 2020378113 A1 AU2020378113 A1 AU 2020378113A1
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- 239000007788 liquid Substances 0.000 title claims description 81
- 238000000926 separation method Methods 0.000 title claims description 74
- 239000012530 fluid Substances 0.000 title claims description 39
- 239000003921 oil Substances 0.000 claims description 43
- 239000010779 crude oil Substances 0.000 claims description 29
- 239000006260 foam Substances 0.000 claims description 27
- 239000003595 mist Substances 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 230000006837 decompression Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 17
- 239000012071 phase Substances 0.000 description 16
- 239000007791 liquid phase Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1033—Oil well production fluids
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Gas Separation By Absorption (AREA)
Abstract
A CO
Description
A GAS-LIQUID SEPARATION DEVICE FOR C02 FLOODING
The present disclosure belongs to the technical field of oil and gas separation
equipment in oil and gas gathering and transportation systems, and in particular
relates to a gas-liquid separation device for CO 2 flooding produced fluid.
Information of the related art part is merely disclosed to increase the
understanding of the overall background of the present invention, but is not
necessarily regarded as acknowledging or suggesting, in any form, that the
information constitutes the prior art known to a person of ordinary skill in the art.
The principle of CO2 flooding is to inject CO2 into the oil layer as an oil
displacement agent, and improve crude oil recovery by reducing displacement
resistance, reducing crude oil viscosity and promoting crude oil volume expansion
and miscibility effect. A produced fluid ofCO 2 flooding contains oil and associated
gas including alkane, CO2 and a small amount of water. Compared with degassed
crude oil, the physical properties and rheological properties of dissolved gas crude oil
are obviously different, and changing with the changes of parameters such as
temperature and pressure, all of which bring great challenges to the existing oil and
gas gathering, transportation and processing technology systems.
In the process of metering, separation and transportation, the crude oil produced
by CO 2 flooding may be foamed due to CO 2 escape, resulting in difficult separation
and inaccurate metering. The existence of foam will occupy the gas phase space of
the three-phase separator, seriously affect the separation effect of oil, gas and water,
increase the separation time, and even the occurrence of tank oil-overs.
The existing separators are insufficient for efficient separation of gas-bearing
crude oil.
Therefore, it is necessary to propose a gas-liquid separation device for CO 2
flooding crude oil to solve the problems in the prior art.
In order to solve the above problems, the present disclosure proposes a
gas-liquid separation device for CO2 flooding produced fluid, for solving the
technical problem that the existing separators are insufficient for efficient separation
of gas-bearing crude oil.
According to some examples, the present disclosure adopts the following
technical solutions:
A gas-liquid separation device for CO 2 flooding produced fluid, comprising: a
main separation module, comprising a shell, and a rectifier component, a rotary
defoaming paddle, a conical defoaming plate and a foam buffer chamber are provided
sequentially from left to right inside the shell; the foam buffer chamber comprises a
defoaming net, an upper end of the defoaming net is provided with a liquid blocking
net, a right side of the liquid blocking net is provided with a first air outlet pipe which
is connected with a mist catcher, an upper end of the mist catcher is provided with a
second air conduit, a lower end of the foam buffer chamber is connected with a liquid
outlet pipe, an anti-vortex plate is provided between the conical defoaming plate and
the foam buffer chamber, a lower end of the anti-vortex plate is provided with an oil
outlet pipe, and the liquid outlet pipe is connected with the oil outlet pipe;
a pre-separation module, comprising a cylinder on a left side of the shell, an
inlet pipe is connected to a side of the cylinder, a gas-bearing crude oil enters the
cylinder through the inlet pipe in a rotating state, an upper end of the cylinder is
connected with a second air outlet pipe which is communicated with the mist catcher
through a first air conduit, one end of inside of the cylinder closed to the second air
outlet pipe is provided with a liquid baffle plate, a lower end of the cylinder is
provided with a swirl reducing component, and a lower end of the swirl reducing
component is provided with a liquid distribution component.
Valves are respectively provided on the inlet pipe, the first air conduit, the liquid outlet pipe, the oil outlet pipe and the second air conduit.
In addition, the gas-liquid separation device for CO 2 flooding produced fluid
according to the example of the present disclosure may also have the following
additional technical features:
Preferably, the valves comprise a first valve, a second valve, a third valve, a
fourth valve, and a fifth valve. The first valve is located on the inlet pipe, the second
valve is located on the first air conduit, the third valve is located on the oil outlet
pipe, the fourth valve is located on the liquid outlet pipe, and the fifth valve is located
on the second air conduit.
Preferably, the liquid outlet pipe and the oil outlet pipe converge to form a
branch, and a vortex shedding flowmeter is provided on the convergent branch.
Preferably, an adsorption device, the fifth valve and a turbine flowmeter are
sequentially arranged on the second air conduit at the upper end of the mist catcher.
Preferably, an upper end of the rotary defoaming paddle is connected with a
motor which is located on an upper of the shell.
Preferably, a decompression valve is further provided on the upper of the shell.
Preferably, a heating belt is provided at a lower end of the shell.
Preferably, the defoaming net is located at an upper end of the foam buffer
chamber.
Preferably, the inlet pipe is obliquely cut into a side wall of the cylinder and is
communicated with the cylinder.
Preferably, the conical defoaming plate is provided with a plurality of through
holes arranged in a matrix.
Compared with the prior art, the beneficial effects of the present disclosure are:
According to the present disclosure, the inlet pipe of the pre-separation module
and the cylinder are communicated obliquely and tangentially. The tangential inlet
has the function of rotating the fluid entering the cylinder to generate a rotating flow
field, the gas phase moves toward the axis of the cylinder, and rises and rotates to the
second outlet pipe for export. The liquid phase moves towards the wall of the cylinder, forming a downward external swirl flow under the action of centrifugal force and gravity, which flows into the main separation module after being supperped by the swirl reducing component and then in the pre-separation module, the technical effect of the preliminary effective separation of gas and liquid is realized by rotating centrifugal force and rotating disturbance. The staggered arrangement of the liquid baffles in the cylinder can effectively block the upward movement of the liquid droplets in the gas but does not affect the flow of the gas phase. The swirl reducing component can block the tangential movement of the fluid to stabilize the flow and prevent the separated liquid from being re-involved in the gas phase. The liquid distribution component can prevent the fluid countercurrent and reduce the kinetic energy of the fluid. The pre-separation module has the technical effect of effectively separating gas and crude oil. The unstable flow of the fluid after entering the main separation module is further reduced by the rectifier component. The cone-hole defoaming paddle not only has the function of accelerating the separation of oil and gas, but also can effectively eliminate foam with the design of cone-hole. The small droplets contained in the gas are separated by the liquid blocking net. On the one hand, the conical defoaming plate can separate the bubbles when the fluid impacts the conical defoaming plate, and on the other hand, it can break the bubbles during the bubble climbing. The anti-vortex plate allows the separated liquid phase to smoothly flow out of the oil outlet pipe. The heating band increases the temperature in the separator, which has the effect of accelerating the separation rate of the separator, reducing the solubility of CO2 in the oil, and improving the separation efficiency. The shell of the separator is provided with a decompression valve, which can prevent the pressure in the separator from being too high and play a protective role, thereby realizing the effective separation of gas-bearing crude oil and gas. The patent has the technical effect of sufficient separation of gas-bearing crude oil.
The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary examples of the present invention and descriptions thereof are used to explain the present invention, and do not constitute an improper limitation of the present invention.
FIG. 1 is a structural diagram of a gas-liquid separation device for CO 2 flooding
produced fluid of the present disclosure.
Brief description of reference numbers of the drawings:
In FIG. 1, first valve 1; the second valve 2; the third valve 3; the fourth valve 4;
the inlet pipe 5; the cylinder 6; the liquid baffle plate 7; the second air outlet pipe 8;
the swirl reducing component 9; the liquid distribution component 10; the rectifier
component 11; the rotary defoaming paddle 12; motor 13; conical defoaming plate 14;
decompression valve 15; first air conduit 16; partition 17; liquid blocking net 18; mist
catcher 19; oil outlet pipe 20; liquid outlet pipe 21; defoaming net 22; shell 23; vortex
shedding flowmeter 24; turbine flowmeter 25; foam buffer chamber 26; adsorption
device 27; anti-vortex plate 28; fifth valve 29; heating band 30; the first air outlet
pipe 31; the second air conduit 32.
The present disclosure will now be further described with reference to the
accompanying drawings and examples.
It should be pointed out that the following detailed descriptions are all
illustrative and are intended to provide further descriptions of the present invention.
Unless otherwise specified, all technical and scientific terms used in the present
invention have the same meanings as those usually understood by a person of
ordinary skill in the art to which the present invention belongs.
It should be noted that the terms used herein are merely used for describing
specific implementations, and are not intended to limit exemplary implementations of
the present disclosure. As used herein, the singular form is also intended to include
the plural form unless the context clearly dictates otherwise. In addition, it should
further be understood that, terms "comprise" and/or "include" used in this
specification indicate that there are features, steps, operations, devices, components,
and/or combinations thereof.
For the purpose of description, if the words "upper", "lower", "left", "right"
appear in this application, they only means that they are consistent with the up, down,
left and right directions of the drawings themselves, and does not limit the structure,
but is only for the purpose of describing the invention and simplifying the description,
and does not indicate or imply that the equipment or components referred to must
have a specific orientation, be constructed and operated in a specific orientation, and
therefore cannot be construed as a limitation of this application. In addition, the terms
"first", "second", "third", "fourth" are used for descriptive purposes only and cannot
be construed as indicating or implying relative importance.
Explanation of terms: the terms "install", "connect with", "connect to", "fix" and
other terms in the present application shall be understood in a broad sense. For
example, it can be a fixed connection, a detachable connection, or an integrated one;
it can be a mechanical connection or an electrical connection, a direct connection or
an indirect connection through an intermediate medium, an internal connection of
two components, or an interactive relationship between two components. For those
skilled in the art, the specific meaning of the above terms in the invention can be
understood according to the specific situation.
As shown in FIG. 1, a gas-liquid separation device for CO 2 flooding produced
fluid comprises a main separation module comprising a shell 23, and a rectifier
component 11, a rotary defoaming paddle, a conical defoaming plate and a foam
buffer chamber 26 are provided sequentially from left to right inside the shell 23; the
foam buffer chamber 26 comprises a defoaming net 22, an upper end of the
defoaming net 22 is provided with a liquid blocking net 18, a right side of the liquid
blocking net 18 is provided with a first air outlet pipe 31 which is connected with a
mist catcher 19, an upper end of the mist catcher 19 is provided with a second air
conduit 32, a lower end of the foam buffer chamber 26 is connected with a liquid
outlet pipe 21, an anti-vortex plate 28 is provided between the conical defoaming
plate and the foam buffer chamber 26, a lower end of the anti-vortex plate 28 is
provided with an oil outlet pipe 20, and the liquid outlet pipe 21 is connected with the oil outlet pipe 20. And a pre-separation module comprises a cylinder 6 on a left side of the shell 23, a side of the cylinder 6 is connected to an inlet pipe 5, a gas-bearing crude oil enters the cylinder 6 through the inlet pipe 5 in a rotating state, an upper end of the cylinder 6 is connected with a second air outlet pipe 8 which is connected with the mist catcher 19 through a first air conduit 16, one end of inside of the cylinder 6 closed to the second air outlet pipe 8 is provided with a liquid baffle plate 7, a lower end of the cylinder 6 is provided with a swirl reducing component 9, and a lower end of the swirl reducing component 9 is provided with a liquid distribution component
10. Valves are respectively provided on the inlet pipe 5, the first air conduit 16, the
liquid outlet pipe 21, the oil outlet pipe 20 and the second air conduit 32.
The valves comprise a first valve 1, a second valve 2, a third valve 3, a fourth
valve 4, and a fifth valve 29; wherein, the first valve 1 is located on the inlet pipe 5,
the second valve 2 is located on the first air conduit 16, the third valve 3 is located on
the oil outlet pipe 20, the fourth valve 4 is located on the liquid outlet pipe 21, and
the fifth valve 29 is located on the second air conduit 32. The liquid outlet pipe 21
and the oil outlet pipe 20 converge to form a branch, and a vortex shedding
flowmeter 24 is provided on the convergent branch. An adsorption device 27, the
fifth valve 29 and a turbine flowmeter 25 are sequentially arranged on the second air
conduit 32 at the upper end of the mist catcher 19. An upper end of the rotary
defoaming paddle is connected to a motor 13 which is located on an upper of the
shell 23. A decompression valve 15 is further provided on the upper of the shell 23. A
lower end of the shell 23 is provided with a heating band 30. The defoaming net 22 is
located at an upper end of the foam buffer chamber 26. The inlet pipe 5 is obliquely
cut into a side wall of the cylinder 6 and is communicated with the cylinder 6. The
conical defoaming plate is provided with a plurality of through holes arranged in a
matrix.
The first valve 1 is configured to control the opening and closing of the
gas-bearing crude oil entering the cylinder 6 from the inlet pipe 5, and the second
valve 2 is configured to control the convergence of the gas separated by the pre-separation module and the gas separated by the main separation module, and then together into the mist catcher 19 to remove the mist droplets and further separate the crude oil of the mist droplets contained in the gas, which has the technical effect of ensuring effective separation.
The third valve 3 is configured to control the opening and closing of the oil
outlet pipe 20, the fourth valve 4 is configured to control the opening and closing of
the liquid outlet pipe 21, and the fifth valve 29 is configured to control the opening
and closing of the second air conduit 32 to realize gas access from the adsorption
device 27 to the turbine flowmeter 25. The inlet pipe 5 realizes the injection of
gas-bearing crude oil into the cylinder 6, wherein the inlet pipe 5 is inclined and
tangentially communicated with the inner wall of the cylinder 6. The tangential inlet
has the function of rotating the fluid entering the cylinder 6 to generate a rotating
flow field, the gas phase moves toward the axis of the cylinder 6, and rises and
rotates to the second outlet pipe 8 for export. The liquid phase moves towards the
wall of the cylinder, forming a downward external swirl flow under the action of
centrifugal force and gravity, which flows into the main separation module after
being supperped by the swirl reducing component 9 and then in the pre-separation
module, the technical effect of the preliminary effective separation of gas and liquid
is realized by rotating centrifugal force and rotating disturbance. The gas in the
oil-liquid gap is squeezed out, and the principle of gas rising and liquid falling is used
to realize the gas is led out from the upper end, and the liquid is led out from the
lower end for further separation, so as to realize the effect of preliminary effective
separation of gas-bearing crude oil.
An upper end of the inside of the cylinder 6 is provided with liquid baffles 7
arranged in a staggered manner and having effect of effectively blocking the upward
movement of the liquid droplets in the gas, but does not affect the flow of the gas
phase, so as to ensure the blocking of water vapor in the process of centrifugal gas
upward export, so that the water vapor in the gas will be adsorbed on the liquid baffle
7. In addition, the staggered arrangement of the liquid baffle 7 extends the path of the water vapor export, so that the water vapor is changed back and forth during the export process, realizing effective separation of oil droplets in the gas, then the oil droplets in that gas are further removed by the mist catcher 19 through the first gas guide pipe 16, and then are further adsorbed by the adsorption device 27, so that the most effective separation of the oil droplets in the gas is realized
The swirl reducing component 9 can block the tangential movement of the fluid
to stabilize the inflow and prevent the separated liquid from being re-involved in the
gas phase, and can cooperate with the centrifugal to achieve the maximum extrusion
of the gas in the liquid droplet. The liquid distribution component 10 can prevent the
fluid countercurrent and reduce the kinetic energy of the fluid. The pre-separation
module has the technical effect of initially effectively separating gas and crude oil.
The rectifier component has the effect of further reducing the unstable flow of the
fluid after entering the main separation module.
The cone-hole defoaming paddle not only has the function of accelerating the
separation of oil and gas, but also can effectively eliminate foam with the design of
cone-hole. On the one hand, the gas-bearing crude oil is driven to move from left to
right by the rotation, and the gas in the gas-bearing crude oil is continuously
squeezed out through the stirring and beating of the paddle, thereby realizing the next
step of continuous separation.
The liquid blocking net 18 has the function of separating the small droplets
carried in the gas. The conical defoaming plate 14, on the one hand, can separate the
bubbles when the fluid impacts the conical defoaming plate 14, and on the other hand,
can break the bubbles during the bubble climbing. The anti-vortex plate 28 allows the
separated liquid phase to smoothly flow out of the oil outlet pipe 20. The heating
band 30 increases the temperature in the separator, which has the effect of
accelerating the separation rate of the separator, reducing the solubility of CO 2 in the
oil, and improving the separation efficiency. The shell 23 of the separator is provided
with a decompression valve 15, which can prevent the pressure in the separator from
being too high and play a protective role. The motor 13 is configured to provide rotary power for cone-hole defoaming paddle, the vortex shedding flowmeter 24 is used to detect the separated amount of the oil, the setting of the foam buffer chamber
26 realizes the treatment of the foam at a terminal, the defoaming net 22 ruptures the
foam, and then the oil enters the foam buffer chamber 26 and is exported through the
liquid outlet pipe 21 at the lower end, and the adsorption device 27 realizes the gas
for further adsorption, the second air conduit 32 is used to connect the mist catcher
19, the adsorption device 27 and the turbine flowmeter 25, and the turbine flowmeter
can detect the amount of the separated gas. The anti-vortex plate 28 is provided at
the inlet of the oil outlet pipe 20 behind the conical defoaming plate 14 to prevent
eddy currents from being generated. The turbine flowmeter 25 of gas-phase is
arranged behind the adsorption device 27, and the vortex shedding flowmeter 24 of
liquid-phase is arranged behind the oil outlet pipe 20 that converges in one channel,
which are respectively used to measure the separated gas-phase and liquid-phase flow
rates.
According to the present disclosure, the gas-bearing crude oil is separated
through a multi-stage, continuous and composite linkage type separation, wherein,
the gas in the gas-bearing crude oil is separate through a double-stage separation
mode of the centrifugal rotation and the rotary defoaming paddle, the oil drops
contained in the gas are separate through a multi-stage separation mode of the liquid
baffle plate 7, the mist catcher 19 and the adsorption device 27, and the foam are
broken through a multi-stage mode of the conical defoaming plate, the defoaming net
22 and the liquid blocking net 18, thereby realizing the effective separation of the
gas-bearing crude oil.
A working principle and using method: according to the present disclosure,
when the device is in use, the first valve 1 is opened, the CO 2 flooding crude oil
enters the cylinder 6 obliquely along the wall of the cylinder 6 through the inlet pipe
, the gas phase moves toward the axis of the cylinder 6, and rises and rotates to the
second outlet pipe 8 for export; the liquid phase moves toward the wall of the
cylinder, forming a downward external swirl flow under the action of centrifugal force and gravity, and then passes through the swirl reducing component 9 and the liquid distribution component 10 to reduce the kinetic energy of the fluid after entering the shell 23; after that, the liquid phase flows through the rectifier component from left to right to further reduce the unstable flow of the fluid, then passes through the rotary defoaming paddle 12 and the conical defoaming plate 14, and is discharged from the oil outlet at the bottom after stabilizing the flow by anti-vortex plate, wherein the upper liquid phase and a small amount of air bubbles cross the partition 17 of the foam buffer chamber 26 and flow into the foam buffer chamber 26 through the defoaming net 22, stay for 20 minutes, then flow out through the liquid outlet pipe 21 by opening the fourth valve 4, and flow to the vortex flowmeter 24 for metering the liquid phase flow rate after converging with the oil outlet pipe 20. At the same time, the upper gas phase is exported from the first air outlet pipe 31 after small droplets are separated out by the liquid blocking net 18, then passes through the mist catcher 19 after converging with the second air conduit
32, and then flow through the turbine flowmeter 25 for metering the gas phase flow.
Beneficial effects:
The inlet pipe 5 of the pre-separation module and the cylinder 6 are
communicated obliquely and tangentially. The tangential inlet has the function of
rotating the fluid entering the cylinder 6 to generate a rotating flow field, the gas
phase moves toward the axis of the cylinder 6, and rises and rotates to the second
outlet pipe 8 for export. The liquid phase moves towards the wall of the cylinder,
forming a downward external swirl flow under the action of centrifugal force and
gravity, which flows into the main separation module after being supperped by the
swirl reducing component 9 and then in the pre-separation module, the technical
effect of the preliminary effective separation of gas and liquid is realized by rotating
centrifugal force and rotating disturbance. The staggered arrangement of the liquid
baffles 7 in the cylinder 6 can effectively block the upward movement of the liquid
droplets in the gas, but does not affect the flow of the gas phase. The swirl reducing
component 9 can block the tangential movement of the fluid to stabilize the flow and prevent the separated liquid from being re-involved in the gas phase. The liquid distribution component 10 can prevent the fluid countercurrent and reduce the kinetic energy of the fluid. The pre-separation module has the technical effect of effectively separating gas and crude oil. The unstable flow of the fluid after entering the main separation module is further reduced by the rectifier component. The cone-hole defoaming paddle not only has the function of accelerating the separation of oil and gas, but also can effectively eliminate foam with the design of cone-hole. The small droplets contained in the gas are separated by the liquid blocking net 18. On the one hand, the conical defoaming plate 14 can separate the bubbles when the fluid impacts the conical defoaming plate 14, and on the other hand, it can break the bubbles during the bubble climbing. The anti-vortex plate 28 allows the separated liquid phase to smoothly flow out of the oil outlet pipe 20. The heating band 30 increases the temperature in the separator, which has the effect of accelerating the separation rate of the separator, reducing the solubility of CO2 in the oil, and improving the separation efficiency. The shell 23 of the separator is provided with a decompression valve 15, which can prevent the pressure in the separator from being too high and play a protective role, thereby realizing the effective separation of gas-bearing crude oil and gas. The patent has the technical effect of sufficient separation of gas-bearing crude oil.
The foregoing descriptions are merely preferred examples of the present
invention, but not intended to limit the present invention. A person skilled in the art
may make various alterations and variations to the present invention. Any
modification, equivalent replacement, or improvement made within the spirit and
principle of the present invention shall fall within the protection scope of the present
invention.
Although the specific examples of the invention are described above in
combination with the accompanying drawings, it is not a limitation on the protection
scope of the invention. Those skilled in the art should understand that on the basis of
the technical scheme of the invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the invention.
Claims (10)
1. A gas-liquid separation device for CO 2 flooding produced fluid, comprising:
a main separation module comprises a shell, and a rectifier component, a rotary
defoaming paddle, a conical defoaming plate and a foam buffer chamber are provided
sequentially from left to right inside the shell; the foam buffer chamber comprises a
defoaming net, an upper end of the defoaming net is provided with a liquid blocking
net, a right side of the liquid blocking net is provided with a first air outlet pipe which
is connected with a mist catcher, an upper end of the mist catcher is provided with a
second air conduit, a lower end of the foam buffer chamber is connected with a liquid
outlet pipe, an anti-vortex plate is provided between the conical defoaming plate and
the foam buffer chamber, a lower end of the anti-vortex plate is provided with an oil
outlet pipe, and the liquid outlet pipe is connected with the oil outlet pipe;
a pre-separation module, comprising a cylinder on a left side of the shell, an inlet
pipe is connected to a side of the cylinder, a gas-bearing crude oil enters the cylinder
through the inlet pipe in a rotating state, an upper end of the cylinder is connected
with a second air outlet pipe which is communicated with the mist catcher through a
first air conduit, one end of inside of the cylinder closed to the second air outlet pipe
is provided with a liquid baffle plate, a lower end of the cylinder is provided with a
swirl reducing component, and a lower end of the swirl reducing component is
provided with a liquid distribution component;
valves are respectively provided on the inlet pipe, the first air conduit, the liquid
outlet pipe, the oil outlet pipe and the second air conduit.
2. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein the valves include a first valve, a second valve, a third valve, a
fourth valve, and a fifth valve, the first valve is located on the inlet pipe, and the
second valve is located on the first air conduit, the third valve is located on the oil
outlet pipe, the fourth valve is located on the liquid outlet pipe, and the fifth valve is
located on the second air conduit.
3. The gas-liquid separation device for CO 2 flooding produced fluid according to claim 1, wherein the liquid outlet pipe and the oil outlet pipe converge to form a branch, and a vortex shedding flowmeter is provided on the convergent branch.
4. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein an adsorption device, the fifth valve and a turbine flowmeter are
sequentially arranged on the second air conduit at the upper end of the mist catcher..
5. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, further comprising a rotary defoaming paddle, the upper end of the rotary
defoaming paddle is connected to a motor and the motor is located on the upper of the
shell.
6. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein a decompression valve is further provided on the upper of the shell.
7. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein a heating belt is provided at the lower end of the shell.
8. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein the defoaming net is located at the upper end of the foam buffer
chamber.
9. The gas-liquid separation device for CO 2 flooding produced fluid according to
claim 1, wherein the inlet pipe is obliquely cut into the side wall of the cylinder and
connects with the cylinder.
10. The gas-liquid separation device for CO 2 flooding produced fluid according
to claim 1, wherein the conical defoaming plate is provided with a plurality of through
holes arranged in a matrix.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067679.5 | 2019-11-04 | ||
| CN201911067679.5A CN110747007B (en) | 2019-11-04 | 2019-11-04 | CO (carbon monoxide)2Gas-liquid separation device for produced fluid |
| PCT/CN2020/126254 WO2021088828A1 (en) | 2019-11-04 | 2020-11-03 | Co 2 flooding produced fluid gas-liquid separation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2020378113A1 true AU2020378113A1 (en) | 2022-06-23 |
| AU2020378113B2 AU2020378113B2 (en) | 2023-11-23 |
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ID=69282085
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020378113A Active AU2020378113B2 (en) | 2019-11-04 | 2020-11-03 | A gas-liquid separation device for co2 flooding produced fluid |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110747007B (en) |
| AU (1) | AU2020378113B2 (en) |
| WO (1) | WO2021088828A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747007B (en) * | 2019-11-04 | 2021-10-12 | 中国石油大学(华东) | CO (carbon monoxide)2Gas-liquid separation device for produced fluid |
| CN114289091B (en) * | 2022-01-18 | 2023-03-28 | 四川沃文特生物技术有限公司 | Buffer tank for refrigeration system of automatic analysis equipment |
| CN114751111B (en) * | 2022-05-07 | 2023-05-05 | 蚌埠艾普压缩机制造有限公司 | Recovery device for oil field large tank gas |
| CN116870640A (en) * | 2023-09-06 | 2023-10-13 | 浙江百能科技有限公司 | Built-in defoaming device and method applied to separator |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778494A (en) * | 1987-07-29 | 1988-10-18 | Atlantic Richfield Company | Cyclone inlet flow diverter for separator vessels |
| CN2500366Y (en) * | 2001-09-07 | 2002-07-17 | 北京华油惠博普科技有限公司 | Oil gas separator for thickened oil and special thickened oil |
| JP2003210908A (en) * | 2002-01-18 | 2003-07-29 | Makoto:Kk | Cyclone type filter apparatus |
| GB2440726B (en) * | 2006-08-12 | 2011-05-18 | Caltec Ltd | Cyclonic separator and a method of separating fluids |
| CN202012339U (en) * | 2011-03-31 | 2011-10-19 | 西安长庆科技工程有限责任公司 | Oil-water-gas three-phase separating device for oil field |
| CN105176572B (en) * | 2015-10-09 | 2016-10-26 | 中国石油天然气股份有限公司 | A kind of frothy crude oil three phase separator |
| CN205077011U (en) * | 2015-10-09 | 2016-03-09 | 中国石油天然气股份有限公司 | Frothy crude oil three -phase separator |
| CN105457338B (en) * | 2016-01-05 | 2017-09-12 | 中国海洋石油总公司 | Multitube gas-liquid-solid three-phase eddy flow pre-separating system and its application process |
| CN105909229B (en) * | 2016-05-06 | 2018-12-21 | 中国石油大学(北京) | Oil field gas-liquid separator |
| US10683741B2 (en) * | 2017-05-16 | 2020-06-16 | Nextstream Emulsifier Enhancer, Llc | Surface-based separation assembly for use in separating fluid |
| CN208279571U (en) * | 2018-05-18 | 2018-12-25 | 北京大漠石油工程技术有限公司 | A kind of viscous crude defoaming separator |
| CN110747007B (en) * | 2019-11-04 | 2021-10-12 | 中国石油大学(华东) | CO (carbon monoxide)2Gas-liquid separation device for produced fluid |
-
2019
- 2019-11-04 CN CN201911067679.5A patent/CN110747007B/en active Active
-
2020
- 2020-11-03 WO PCT/CN2020/126254 patent/WO2021088828A1/en active Application Filing
- 2020-11-03 AU AU2020378113A patent/AU2020378113B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2020378113B2 (en) | 2023-11-23 |
| CN110747007B (en) | 2021-10-12 |
| CN110747007A (en) | 2020-02-04 |
| WO2021088828A1 (en) | 2021-05-14 |
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| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ A GAS-LIQUID SEPARATION DEVICE FOR CO2 FLOODING PRODUCED FLUID |
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| FGA | Letters patent sealed or granted (standard patent) |