CN113550730B - Multiphase metering mixed transportation system and multiphase metering mixed transportation method - Google Patents
Multiphase metering mixed transportation system and multiphase metering mixed transportation method Download PDFInfo
- Publication number
- CN113550730B CN113550730B CN202111096025.2A CN202111096025A CN113550730B CN 113550730 B CN113550730 B CN 113550730B CN 202111096025 A CN202111096025 A CN 202111096025A CN 113550730 B CN113550730 B CN 113550730B
- Authority
- CN
- China
- Prior art keywords
- separation tank
- gas
- branch
- multiphase
- multiphase fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 287
- 239000012530 fluid Substances 0.000 claims abstract description 107
- 239000007788 liquid Substances 0.000 claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims 2
- 239000012071 phase Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007791 liquid phase Substances 0.000 abstract description 5
- 239000003129 oil well Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 172
- 238000005259 measurement Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention provides a multiphase metering mixed transportation system and a multiphase metering mixed transportation method, which relate to the technical field of oil well mixed transportation, and the multiphase metering mixed transportation method comprises the following steps: acquiring the water content of the multiphase fluid to be conveyed, and conveying the water content into a first separation tank so as to enable the liquid in the multiphase fluid in the first separation tank to be deposited in the first separation tank; converting the gas separated in the first separation tank into high-pressure gas, sending the high-pressure gas into a second separation tank, and discharging the high-pressure gas through the second separation tank; acquiring the water content of the multiphase fluid to be conveyed, and conveying the multiphase fluid to a second separation tank to enable the liquid in the multiphase fluid in the second separation tank to be deposited in the second separation tank; and converting the gas separated from the second separation tank into high-pressure gas, and sending the high-pressure gas into the first separation tank. The technical problem that the metering effect of gas phase and liquid phase in a mixed conveying device is not ideal in the oil and gas exploitation process of an oil field in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of oil well mixed transportation, in particular to a multiphase metering mixed transportation system and a multiphase metering mixed transportation method.
Background
In the oil and gas production process of oil fields, produced liquid contains a mixture of gas state and liquid state or a mixture of solid state, gas state and liquid state, and the mixture is difficult to pump directly. Therefore, a separation process is usually performed first to facilitate separate transportation.
In the separation technology of gas phase and liquid phase, the prior art can realize the separation of the gas phase and the liquid phase, but the metering effect of the gas phase and the liquid phase in a mixed conveying device is not ideal.
Disclosure of Invention
The invention aims to provide a multiphase metering and mixed conveying system and a multiphase metering and mixed conveying method, which are used for solving the technical problem that the gas phase and the liquid phase are not ideal in metering effect in a mixed conveying device in the oil and gas exploitation process of an oil field in the prior art.
In a first aspect, the present invention provides a multiphase metering and mixing system, comprising: the device comprises a first separation tank, a second separation tank, a multiphase fluid inlet branch, a first gas branch, a second gas branch, a collection element and a control element;
the multiphase fluid inlet branch is communicated with the first separation tank or the second separation tank and comprises a water content analyzer;
the first gas branch and the second gas branch are arranged in parallel and are both connected with the first separation tank and the second separation tank; a gas flowmeter is arranged on the first gas branch or the second gas branch;
a gas conveying device is connected in series between the first gas branch and the second gas branch and is used for converting gas into high-pressure gas;
the gas separated in the first separation tank can enter the second separation tank through the first gas branch, the gas conveying device, the second gas branch and the gas flowmeter; likewise, the gas separated in the second separation tank can enter the first separation tank through the second gas branch, the gas delivery device, the first gas branch and the gas flow meter;
the collecting element is used for collecting liquid information in the first separation tank or the second separation tank;
the multiphase fluid inlet branch, the first gas branch and the second gas branch are all electrically connected with the control element.
Further, the multiphase metering and mixing transmission system further comprises a balance branch, and the balance branch is electrically connected with the control element;
the balance branch is connected between the first separation tank and the second separation tank and is used for balancing air pressure between the first separation tank and the second separation tank;
the balancing branch comprises a balancing valve which can be opened or closed.
Further, the multiphase fluid inlet branch connects the first separation tank and the second separation tank;
the multiphase fluid inlet branch also comprises an inlet three-way valve, and the inlet three-way valve is used for controlling the connection or disconnection of the multiphase fluid inlet branch with the first separation tank and the second separation tank.
Further, the multiphase fluid inlet branch further comprises a pressure sensor and/or a temperature sensor.
Further, the first gas branch comprises a first reversing valve, a first one-way valve, a second one-way valve and a second reversing valve in sequence;
the second gas branch comprises a third one-way valve, a first gas flowmeter, a third reversing valve, a fourth reversing valve, a second gas flowmeter and a fourth one-way valve in sequence;
the inlet end of the gas conveying device is connected between the first one-way valve and the second one-way valve, and the outlet end of the gas conveying device is connected between the third reversing valve and the fourth reversing valve.
Further, the multiphase metering and mixing transmission system further comprises a first measuring branch and a second measuring branch;
the first measuring branch comprises a first differential pressure sensor, one end of the first measuring branch is connected with the bottom of the first separation tank, and the other end of the first measuring branch is connected with the top of the first separation tank;
the second measuring branch comprises a second differential pressure sensor, one end of the second measuring branch is connected with the bottom of the second separating tank, and the other end of the second measuring branch is connected with the top of the second separating tank.
Further, the multiphase metering and mixing transportation system also comprises a multiphase fluid discharge branch;
the multiphase fluid discharge branch comprises an outlet three-way valve, and the outlet three-way valve is connected between the bottom of the first separation tank and the bottom of the second separation tank;
and one valve port of the outlet three-way valve is connected with a fifth one-way valve.
In a second aspect, the present invention is based on the multiphase metering and mixing method of the multiphase metering and mixing system described in the foregoing embodiment, and includes the following steps:
acquiring the water content of the multiphase fluid to be conveyed, and conveying the water content into the first separation tank so as to enable the liquid in the multiphase fluid in the first separation tank to be deposited in the first separation tank, wherein the gas in the multiphase fluid in the first separation tank is separated from the first liquid; converting the gas separated in the first separation tank into high-pressure gas, obtaining the gas quantity of the high-pressure gas, sending the high-pressure gas into the second separation tank, and discharging the high-pressure gas through the second separation tank;
acquiring liquid volume information of liquid in the first separation tank, and cutting off multiphase fluid to be conveyed into the first separation tank when the liquid volume information reaches a preset value;
acquiring the water content of the multiphase fluid to be conveyed, and conveying the water content into the second separation tank so as to enable the liquid in the multiphase fluid in the second separation tank to be deposited in the second separation tank, wherein the gas and the liquid in the multiphase fluid in the second separation tank are separated; converting the gas separated from the second separation tank into high-pressure gas, obtaining the gas quantity of the high-pressure gas, and sending the high-pressure gas into the first separation tank to push the liquid in the first separation tank to be discharged;
and liquid amount information of the liquid in the second separation tank is obtained, and when the liquid amount information reaches a preset value, the multiphase fluid to be conveyed is cut off and sent into the second separation tank.
Further, in the step of acquiring the liquid amount information of the liquid in the first separation tank and the second separation tank, the liquid pressure difference of the first separation tank or the second separation tank is acquired in real time.
Further, the step of equalizing the gas pressure between the first separation tank and the second separation tank is added when the multiphase fluid is switched between the first separation tank and the second separation tank.
The multiphase metering mixed transportation system and the multiphase metering mixed transportation method provided by the invention have the beneficial effects that:
the multiphase fluid inlet branch is communicated with the first separation tank or the second separation tank and comprises a water content analyzer, and the water content analyzer can measure water content in the multiphase fluid sent into the first separation tank or the second separation tank so as to obtain water amount in the multiphase fluid; the first gas branch and the second gas branch are arranged in parallel and are both connected with the first separation tank and the second separation tank; a gas conveying device is connected in series between the first gas branch and the second gas branch and is used for converting gas into high-pressure gas, so that after liquid and gas in multiphase fluid in the first separation tank or the second separation tank are separated, the liquid can be deposited in the corresponding tank body, and meanwhile, the gas can enter the corresponding second separation tank or the corresponding first separation tank through the gas branches and the gas conveying device and is discharged; specifically, the acquisition element is used for acquiring liquid information in the first separation tank or the second separation tank, the balance branch, the multiphase fluid inlet branch, the first gas branch and the second gas branch are electrically connected with the control element, and when liquid in the first separation tank (or the second separation tank) reaches a preset value, the control element can control the multiphase fluid inlet branch to be communicated with the second separation tank (or the first separation tank), so that gas in the first separation tank (or the second separation tank) enters the second separation tank (or the first separation tank) through the gas branch and the gas conveying device, and liquid in the second separation tank is pushed to be discharged. The oil quantity in the multiphase fluid can be obtained by collecting the liquid information of the first separation tank or the second separation tank; meanwhile, the gas flowmeter is arranged on the first gas branch or the second gas branch, and the gas quantity separated from the multiphase fluid can be obtained.
In addition, on the basis of realizing the separation of liquid and gas and on-line metering, the liquid can be deposited in the first separation tank (or the second separation tank), the gas can be discharged from the second separation tank (or the first separation tank), or the liquid can be deposited in the first separation tank (or the second separation tank), and the gas enters the second separation tank (or the first separation tank) to push the liquid in the second separation tank to be discharged, so that the mixed transportation of gas and liquid can be realized, and the uninterrupted transportation of the multiphase fluid can be ensured. Therefore, through the arrangement, the on-line measurement of the water quantity, the oil quantity and the gas quantity in the multiphase fluid in the mixed transportation system can be realized, and the measurement effect is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a multiphase metering and mixing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a multiphase metering and mixing system for inputting multiphase fluid into a first separation tank according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a multiphase metering and mixing system according to an embodiment of the present invention inputting multiphase fluid into a second separation tank.
Icon:
100-a first separation tank; 200-a second separation tank; 300-balance branch; 400-multiphase fluid entering the branch; 500-first gas branch; 600-a second gas branch; 700-a gas delivery device; 800-a first measurement branch; 900-a second measurement branch; 1000-multiphase fluid discharge branch;
310-a balancing valve;
410-moisture analyzer; 420-inlet three-way valve; 430-a pressure sensor; 440-a temperature sensor;
510-a first directional valve; 520-a first one-way valve; 530-a second one-way valve; 540-a second reversing valve;
610-a third one-way valve; 620-a first gas flow meter; 630-a third directional valve; 640-a fourth directional valve; 650-a second gas flow meter; 660-a fourth one-way valve;
810-a first differential pressure sensor; 820-a second differential pressure sensor;
1100-outlet three-way valve; 1200-fifth one-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The embodiment provides a multiphase metering mixed transportation method, which comprises the following steps:
acquiring the water content of the multiphase fluid to be conveyed, and conveying the water content into the first separation tank 100, so that the liquid in the multiphase fluid in the first separation tank 100 is deposited in the first separation tank 100, and the gas in the multiphase fluid in the first separation tank 100 is separated from the first liquid; converting the gas separated in the first separation tank 100 into high-pressure gas, obtaining the gas amount of the high-pressure gas, sending the high-pressure gas into the second separation tank 200, and discharging the high-pressure gas through the second separation tank 200;
acquiring liquid volume information of liquid in the first separation tank 100, and cutting off multiphase fluid to be conveyed into the first separation tank 100 when the liquid volume information reaches a preset value;
acquiring the water content of the multiphase fluid to be conveyed, and conveying the water content into the second separation tank 200, so that the liquid in the multiphase fluid in the second separation tank 200 is deposited in the second separation tank 200, and the gas in the multiphase fluid in the second separation tank 200 is separated from the liquid; converting the gas separated in the second separation tank 200 into high-pressure gas, obtaining the gas amount of the high-pressure gas, and sending the high-pressure gas into the first separation tank 100 to push the liquid in the first separation tank 100 to be discharged;
and acquiring the liquid volume information of the liquid in the second separation tank 200, and cutting off the multiphase fluid to be conveyed into the second separation tank 200 when the liquid volume information reaches a preset value.
By the multiphase metering mixed transportation method, the online metering of the water quantity, the oil quantity and the gas quantity in the multiphase fluid can be realized; meanwhile, when the multiphase fluid can be mixed and conveyed between the first separation tank 100 and the second separation tank 200, the separated gas can push the liquid to be discharged, and the uninterrupted conveyance of the multiphase fluid is ensured.
Further, in the step of acquiring the liquid amount information of the liquid in the first separation tank 100 and the second separation tank 200, the liquid pressure difference of the first separation tank 100 or the second separation tank 200 is acquired in real time.
In other embodiments, the level information in the first separation tank 100 or the second separation tank 200 may also be obtained in real time.
Furthermore, when the multiphase fluid is switched between the first separation tank 100 and the second separation tank 200, a step of balancing the air pressure between the first separation tank 100 and the second separation tank 200 is added, so that the air pressure between the first separation tank 100 and the second separation tank 200 can be balanced, the reversing impact is reduced, and the system can run stably.
In combination with the above multiphase metering and mixing transportation method, the present embodiment further provides a multiphase metering and mixing transportation system, referring to fig. 1 to fig. 3, the multiphase metering and mixing transportation system includes a first separation tank 100, a second separation tank 200, a multiphase fluid inlet branch 400, a first gas branch 500, a second gas branch 600, a collection element, and a control element; the multiphase fluid inlet branch 400 is connected with the first separation tank 100 or the second separation tank 200, and the multiphase fluid inlet branch 400 comprises an aquifer analyzer 410; the first gas branch 500 and the second gas branch 600 are arranged in parallel and both are connected with the first separation tank 100 and the second separation tank 200; a gas flowmeter is arranged on the first gas branch 500 or the second gas branch 600; a gas conveying device 700 is connected in series between the first gas branch 500 and the second gas branch 600 and is used for converting gas into high-pressure gas; the gas separated in the first separation tank 100 can enter the second separation tank 200 through the first gas branch 500, the gas conveying device 700 and the second gas branch 600; likewise, the gas separated in the second separation tank 200 can enter the first separation tank 100 through the second gas branch 600, the gas delivery device 700 and the first gas branch 500; the collecting element is used for collecting liquid information in the first separation tank 100 or the second separation tank 200; the balance branch 300, multiphase fluid inlet branch 400, first gas branch 500 and second gas branch 600 are all electrically connected to a control element.
The multiphase fluid inlet branch 400 is communicated with the first separation tank 100 or the second separation tank 200, the multiphase fluid inlet branch 400 comprises a water content analyzer 410, and the water content analyzer 410 can measure the water content in the multiphase fluid sent into the first separation tank 100 or the second separation tank 200 to obtain the water content in the multiphase fluid; since the first gas branch 500 and the second gas branch 600 are arranged in parallel and both connect the first separation tank 100 and the second separation tank 200; a gas delivery device 700 is connected in series between the first gas branch 500 and the second gas branch 600 for converting gas into high-pressure gas, so that after the liquid in the multiphase fluid in the first separation tank 100 or the second separation tank 200 is separated from the gas, the liquid can be deposited in the corresponding tank, and meanwhile, the gas can enter the corresponding second separation tank 200 or the first separation tank 100 through the gas branch and the gas delivery device 700 and be discharged.
Specifically, the collecting element is used for collecting liquid information in the first separation tank 100 or the second separation tank 200, the balance branch 300, the multiphase fluid inlet branch 400, the first gas branch 500 and the second gas branch 600 are all electrically connected with the control element, and when the liquid in the first separation tank 100 (or the second separation tank 200) reaches a preset value, the control element can control the multiphase fluid inlet branch 400 to be communicated with the second separation tank 200 (or the first separation tank 100), so that the gas in the first separation tank 100 (or the second separation tank 200) enters the second separation tank 200 (or the first separation tank 100) through the gas branch and the gas conveying device 700, and pushes the liquid in the second separation tank 100 to be discharged. Wherein, the oil amount in the multiphase fluid can be obtained by collecting the liquid information of the first separation tank 100 or the second separation tank 200; meanwhile, the first gas branch 500 or the second gas branch 600 is provided with a gas flowmeter, and can also obtain the gas amount separated from the multiphase fluid.
In addition, on the basis of realizing the separation of liquid and gas and on-line metering, the liquid can be deposited in the first separation tank 100 (or the second separation tank 200), the gas can be discharged from the second separation tank 200 (or the first separation tank 100), or the liquid can be deposited in the first separation tank 100 (or the second separation tank 200), and the gas enters the second separation tank 200 (or the first separation tank 100) to push the liquid in the second separation tank to be discharged, so that the mixed gas-liquid transportation is realized, and the uninterrupted transportation of the multiphase fluid is ensured. Therefore, through the arrangement, the on-line measurement of the water quantity, the oil quantity and the gas quantity in the multiphase fluid in the mixed transportation system can be realized, and the measurement effect is good.
In addition, silt in the mixture (i.e., multiphase fluid) produced by the well will settle at the lower portion of the separator due to gravity, and will not enter the gas branch, thereby not affecting the operation of the gas conveying device 700. Meanwhile, through control of the control element, unattended operation can be achieved.
Referring to fig. 1, the multiphase metering and mixing transmission system further comprises a balance branch 300, wherein the balance branch 300 is electrically connected with the control element; the balancing branch 300 is connected between the first separation tank 100 and the second separation tank 200 for balancing air pressure therebetween; the equalization branch 300 includes an equalization valve 310 that can be opened or closed.
The control element can control the opening or closing of the balance valve 310, for example, when the multiphase fluid is required to be switched between the first separation tank 100 and the second separation tank 200, the balance valve 310 can be opened first to balance the pressures in the two tanks, and after the balance, the balance valve 310 is closed. With continued reference to fig. 1, a multiphase fluid inlet leg 400 connects the first separation tank 100 and the second separation tank 200; the multi-phase fluid inlet bypass 400 includes an aqueous analyzer 410 and an inlet three-way valve 420, and the inlet three-way valve 420 is used to control the connection and disconnection of the multi-phase fluid inlet bypass 400 with the first and second separation tanks 100 and 200.
Specifically, referring to fig. 2, when the multiphase fluid is input into the first separation tank 100, the control element controls the inlet three-way valve 420 to communicate with the first separation tank 100, and at this time, the multiphase fluid is disconnected from the second separation tank 200, and after the water content is detected by the water analyzer 410, the multiphase fluid enters the first separation tank 100 through the inlet three-way valve 420.
Similarly, referring to fig. 3, when the multiphase fluid is fed into the second separation tank 200, the control unit controls the inlet three-way valve 420 to communicate with the second separation tank 200, and at this time, the multiphase fluid is disconnected from the first separation tank 100, and the multiphase fluid enters the second separation tank 200 through the inlet three-way valve 420 after the water content is detected by the water analyzer 410.
It should be noted that, when the liquid in the first separation tank 100 reaches a preset value, the balance valve 310 needs to be opened first to balance the pressures in the two tanks, then the inlet three-way valve 420 is controlled by the control element to be communicated with the second separation tank 200 and disconnected from the first separation tank 100, and then the multiphase fluid is fed into the second separation tank 200, at this time, the gas at the separation position in the second separation tank 200 can enter the first separation tank 100, and the liquid in the first separation tank 100 is pushed to be discharged.
With continued reference to fig. 1, the multiphase fluid inlet branch 400 further includes a pressure sensor 430 and a temperature sensor 440 for respectively collecting the pressure and temperature of the multiphase fluid.
Specifically, referring to fig. 1, the first gas branch 500 includes, in order from left to right, a first direction changing valve 510, a first check valve 520, a second check valve 530, and a second direction changing valve 540; the second gas branch 600 comprises a third one-way valve 610, a first gas flow meter 620, a third reversing valve 630, a fourth reversing valve 640, a second gas flow meter 650 and a fourth one-way valve 660 from left to right in sequence; the inlet end of the gas delivery device 700 is connected between the first one-way valve 520 and the second one-way valve 530, and the outlet end of the gas delivery device 700 is connected between the third direction valve 630 and the fourth direction valve 640.
The gas delivery device 700 may be implemented by any conventional technique to convert a low pressure gas into a high pressure gas.
It should be noted that, in a time period before the multiphase fluid is switched between the first separation tank 100 and the second separation tank 200, the sum of the gases separated from the multiphase fluid in the time period can be detected by the first gas flowmeter 620 or the second gas flowmeter 650.
Further, the multiphase metering and mixing transmission system further comprises a first measuring branch 800 and a second measuring branch 900; the first measuring branch 800 comprises a first differential pressure sensor 810, one end of the first measuring branch 800 is connected with the bottom of the first separation tank 100, and the other end of the first measuring branch 800 is connected with the top of the first separation tank 100; the second measuring branch 900 includes a second differential pressure sensor 820, one end of the second measuring branch 900 is connected to the bottom of the second separation tank 200, and the other end of the second measuring branch 900 is connected to the top of the second separation tank 200.
It should be noted that the liquid pressure difference is actually the pressure generated by the weight of the liquid column in the separator acting on the cross-sectional area of the separator, and the mass of the liquid column in the separator can be calculated according to the pressure, the mass of the liquid column in the separator can be calculated in real time because the pressure difference is recorded in real time, and the change of the mass of the liquid column in unit time is the instantaneous flow rate of the liquid, and the accumulated yield of the liquid can be calculated according to the change of the mass of the liquid column in unit time.
Furthermore, the multiphase metering and mixing system further comprises a multiphase fluid discharge branch 1000; the multiphase fluid discharge branch 1000 includes an outlet three-way valve 1100, the outlet three-way valve 1100 is connected between the bottom of the first separation tank 100 and the bottom of the second separation tank 200, and a port of the outlet three-way valve 1100 is connected to a fifth check valve 1200 to prevent backflow.
Specifically, when the inlet three-way valve 420 is communicated with the first separation tank 100, the outlet three-way valve 1100 is communicated with the second separation tank 200 to ensure that the gas separated from the first separation tank 100 can enter the second separation tank 200 and be discharged through the outlet three-way valve 1100; alternatively, the gas entering the second separation tank 200 pushes the liquid therein to be discharged through the outlet three-way valve 1100.
When the inlet three-way valve 420 is communicated with the second separation tank 200, the outlet three-way valve 1100 is communicated with the first separation tank 100 to ensure that the gas separated from the second separation tank 200 can enter the first separation tank 100 and to push the liquid in the first separation tank 100 to be discharged through the outlet three-way valve 1100.
In summary, a separation step of the multiphase metering and mixing transportation system of the embodiment is as follows:
referring to fig. 2, the multiphase fluid enters the first separation tank 100 through the water content analyzer 410 and the inlet three-way valve 420, so that the liquid in the multiphase fluid is gradually deposited in the first separation tank 100, and meanwhile, the gas (low-pressure gas) separated from the multiphase fluid sequentially passes through the first reversing valve 510, the first one-way valve 520, the gas conveying device 700 (gas pressurization), the fourth reversing valve 640, the second gas flowmeter 650 and the fourth one-way valve 660, enters the second separation tank 200, and is discharged through the outlet three-way valve 1100; alternatively, as the gas in the second separation tank 200 increases, the liquid in the second separation tank 200 is discharged through the outlet three-way valve 1100.
When the control element receives the pressure difference information sent by the first differential pressure sensor 810 and reaches a preset value, the control element controls the inlet three-way valve 420 to be disconnected from the first separation tank 100, at the moment, the balance valve 310 is opened to balance the air pressure, then the balance valve 310 is closed, and the inlet three-way valve 420 is controlled to be communicated with the second separation tank 200; referring to fig. 3, the multiphase fluid enters the second separation tank 200 through the water content analyzer 410 and the inlet three-way valve 420, so that the liquid in the multiphase fluid is gradually deposited in the second separation tank 200, and simultaneously, the gas (low-pressure gas) separated from the multiphase fluid sequentially passes through the second directional valve 540, the second one-way valve 530, the gas delivery device 700 (gas pressurization), the third directional valve 630, the first gas flow meter 620 and the third one-way valve 610 to enter the first separation tank 100, and the liquid in the first separation tank 100 is discharged through the outlet three-way valve 1100.
It should be noted that the first separation tank 100 and the second separation tank 200 may have the same structure, and meanwhile, the preset pressure difference value is also the same, so that the liquid in the first separation tank 100 can reach the preset value and the liquid in the second separation tank 200 can be discharged; alternatively, the liquid in the first separation tank 100 can be discharged while the liquid in the second separation tank 200 reaches a preset value.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A multiphase metering and mixing system, comprising: a first separation tank (100), a second separation tank (200), a multiphase fluid inlet branch (400), a first gas branch (500), a second gas branch (600), an acquisition element and a control element;
the multiphase fluid inlet branch (400) is communicated with the first separation tank (100) or the second separation tank (200), and the multiphase fluid inlet branch (400) comprises a water content analyzer (410);
the first gas branch (500) and the second gas branch (600) are arranged in parallel and both connect the first separation tank (100) and the second separation tank (200); a gas flowmeter is arranged on the first gas branch (500) or the second gas branch (600);
a gas conveying device (700) is connected in series between the first gas branch (500) and the second gas branch (600) and is used for converting gas into high-pressure gas;
the gas separated in the first separation tank (100) can enter the second separation tank (200) through the first gas branch (500), the gas conveying device (700), the second gas branch (600) and the gas flowmeter; likewise, the gas separated in the second separation tank (200) can enter the first separation tank (100) through the second gas branch (600), the gas delivery device (700), the first gas branch (500) and the gas flow meter;
the collecting element is used for collecting liquid information in the first separation tank (100) or the second separation tank (200);
the multiphase fluid inlet branch (400), the first gas branch (500) and the second gas branch (600) are all electrically connected with the control element.
2. The multiphase metering and mixing system according to claim 1, further comprising a balancing branch (300), wherein the balancing branch (300) is electrically connected with the control element;
the balancing branch (300) is connected between the first separation tank (100) and the second separation tank (200) for balancing the gas pressure therebetween;
the balancing branch (300) comprises a balancing valve (310) that can be opened or closed.
3. The multiphase metered compound delivery system of claim 1, wherein said multiphase fluid inlet branch (400) connects said first separation tank (100) and said second separation tank (200);
the multiphase fluid inlet branch (400) further comprises an inlet three-way valve (420), and the inlet three-way valve (420) is used for controlling the connection or disconnection of the multiphase fluid inlet branch (400) with the first separation tank (100) and the second separation tank (200).
4. The multiphase metering system of claim 3, wherein said multiphase fluid inlet branch (400) further comprises a pressure sensor (430) and/or a temperature sensor (440).
5. The multiphase metered multiphase mixing delivery system of claim 1, wherein said first gas branch (500) comprises, in sequence, a first directional valve (510), a first one-way valve (520), a second one-way valve (530), and a second directional valve (540);
the second gas branch (600) sequentially comprises a third one-way valve (610), a first gas flow meter (620), a third reversing valve (630), a fourth reversing valve (640), a second gas flow meter (650) and a fourth one-way valve (660);
the inlet end of the gas conveying device (700) is connected between the first one-way valve (520) and the second one-way valve (530), and the outlet end of the gas conveying device (700) is connected between the third reversing valve (630) and the fourth reversing valve (640).
6. The multiphase metering and mixing system of claim 1, further comprising a first measuring branch (800) and a second measuring branch (900);
the first measuring branch (800) comprises a first differential pressure sensor (810), one end of the first measuring branch (800) is connected with the bottom of the first separation tank (100), and the other end of the first measuring branch (800) is connected with the top of the first separation tank (100);
the second measuring branch (900) comprises a second differential pressure sensor (820), one end of the second measuring branch (900) is connected with the bottom of the second separation tank (200), and the other end of the second measuring branch (900) is connected with the top of the second separation tank (200).
7. The multiphase metering system of claim 1, further comprising a multiphase fluid discharge branch (1000);
the multiphase fluid discharge branch (1000) comprises an outlet three-way valve (1100), the outlet three-way valve (1100) being connected between a tank bottom of the first separation tank (100) and a tank bottom of the second separation tank (200);
and one valve port of the outlet three-way valve (1100) is connected with a fifth one-way valve (1200).
8. A multiphase metering and mixing method based on the multiphase metering and mixing system as claimed in any one of claims 1 to 7, comprising:
acquiring the water content of the multiphase fluid to be conveyed, and sending the water content into a first separation tank (100) so that the liquid in the multiphase fluid in the first separation tank (100) is deposited in the first separation tank (100), and the gas in the multiphase fluid in the first separation tank (100) is separated from the first liquid; converting the gas separated in the first separation tank (100) into high-pressure gas, obtaining the gas quantity of the high-pressure gas, sending the high-pressure gas into a second separation tank (200), and discharging the high-pressure gas through the second separation tank (200);
obtaining liquid volume information of liquid in the first separation tank (100), and cutting off multiphase fluid to be conveyed to be sent into the first separation tank (100) when the liquid volume information reaches a preset value;
acquiring the water content of the multiphase fluid to be conveyed and sending the water content into the second separation tank (200) so that the liquid in the multiphase fluid in the second separation tank (200) is deposited in the second separation tank (200), and the gas in the multiphase fluid in the second separation tank (200) is separated from the liquid; converting the gas separated in the second separation tank (200) into high-pressure gas, obtaining the gas quantity of the high-pressure gas, and sending the high-pressure gas into the first separation tank (100) to push the liquid in the first separation tank (100) to be discharged;
and liquid amount information of the liquid in the second separation tank (200) is acquired, and when the liquid amount information reaches a preset value, the multiphase fluid to be conveyed is cut off and sent into the second separation tank (200).
9. The multiphase metered compound transfer method according to claim 8, wherein in the step of acquiring information on the liquid amounts of the liquids in the first separation tank (100) and the second separation tank (200), the liquid pressure difference of the first separation tank (100) or the second separation tank (200) is acquired in real time.
10. The multiphase metered multiphase flow method of claim 8, wherein the step of balancing the gas pressure between the first separation tank (100) and the second separation tank (200) is increased when multiphase fluid is switched between the first separation tank (100) and the second separation tank (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111096025.2A CN113550730B (en) | 2021-09-18 | 2021-09-18 | Multiphase metering mixed transportation system and multiphase metering mixed transportation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111096025.2A CN113550730B (en) | 2021-09-18 | 2021-09-18 | Multiphase metering mixed transportation system and multiphase metering mixed transportation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113550730A CN113550730A (en) | 2021-10-26 |
| CN113550730B true CN113550730B (en) | 2021-12-17 |
Family
ID=78134682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111096025.2A Active CN113550730B (en) | 2021-09-18 | 2021-09-18 | Multiphase metering mixed transportation system and multiphase metering mixed transportation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113550730B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542991B (en) * | 2022-04-27 | 2022-08-26 | 山东管辅能源科技有限公司 | Metering device and method for multiphase flow mixed transportation |
| CN115030886B (en) * | 2022-06-08 | 2023-05-23 | 广东管辅能源科技有限公司 | Feedback type mixed transportation pressurizing system applied to mixed transportation of oil and gas |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042304A (en) * | 2007-04-24 | 2007-09-26 | 胜利油田胜利工程设计咨询有限责任公司 | Oil gas and water mixed flow phase-splitting contimuous measuring equipment |
| CN101525995A (en) * | 2009-04-22 | 2009-09-09 | 西安三林能源科技工程有限公司 | Gas and liquid multiphase quantitative measuring device and method thereof |
| CN102854122A (en) * | 2012-03-05 | 2013-01-02 | 胜利油田胜利勘察设计研究院有限公司 | Multifunctional annular oil-gas-water multiphase flow corrosion simulation test device |
| CN203822283U (en) * | 2014-04-10 | 2014-09-10 | 兰州科庆仪器仪表有限责任公司 | Three-phase-metering mixed-transportation multifunctional integrated device |
| CN104180160A (en) * | 2014-09-01 | 2014-12-03 | 汉纬尔机械(上海)有限公司 | Oil-gas mixing transportation system for screw compressor |
| CN204782979U (en) * | 2015-07-14 | 2015-11-18 | 西安长庆科技工程有限责任公司 | Small -size heterogeneous measurement integrated device |
| CN205330651U (en) * | 2016-02-02 | 2016-06-22 | 吴茜 | Heterogeneous measurement in oil field is defeated device thoughtlessly |
| CN105840169A (en) * | 2016-05-30 | 2016-08-10 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Pried type oil-gas-separation single-well metering device and metering method thereof |
| CN107060729A (en) * | 2017-06-15 | 2017-08-18 | 上海诺仪表有限公司 | A kind of individual well multi-phase flow meter |
| CN107083950A (en) * | 2017-04-24 | 2017-08-22 | 延长油田股份有限公司 | Calibration system and its scaling method based on Weighing type single well metering device |
| WO2018003731A1 (en) * | 2016-06-28 | 2018-01-04 | 日曹エンジニアリング株式会社 | Method for transporting multiphase liquid and device for same |
| JP2018043221A (en) * | 2016-09-16 | 2018-03-22 | 旭化成株式会社 | Treatment method of produced water from oil filed and gas field |
| CN109488882A (en) * | 2016-10-08 | 2019-03-19 | 武汉齐达康能源装备有限公司 | A kind of gas-liquid delivery supercharging device and method with wire mesh demister |
| CN112762358A (en) * | 2020-12-28 | 2021-05-07 | 官天日 | Multiphase flow mixing and conveying device |
| CN213840500U (en) * | 2020-11-27 | 2021-07-30 | 北京星油科技有限公司 | Multiphase mixed transportation intelligent prying set |
| CN214171961U (en) * | 2020-12-31 | 2021-09-10 | 广东管辅能源科技有限公司 | Multiphase flow mixed transportation device and multiphase flow mixed transportation application system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682698A (en) * | 2020-12-28 | 2021-04-20 | 广东管辅能源科技有限公司 | Multiphase flow mixing and conveying method and multiphase flow mixing and conveying device |
| CN112682697A (en) * | 2020-12-28 | 2021-04-20 | 广东管辅能源科技有限公司 | Control method and system for multiphase flow mixed transportation |
| CN214171959U (en) * | 2020-12-28 | 2021-09-10 | 广东管辅能源科技有限公司 | Multiphase flow mixing and conveying device |
-
2021
- 2021-09-18 CN CN202111096025.2A patent/CN113550730B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042304A (en) * | 2007-04-24 | 2007-09-26 | 胜利油田胜利工程设计咨询有限责任公司 | Oil gas and water mixed flow phase-splitting contimuous measuring equipment |
| CN101525995A (en) * | 2009-04-22 | 2009-09-09 | 西安三林能源科技工程有限公司 | Gas and liquid multiphase quantitative measuring device and method thereof |
| CN102854122A (en) * | 2012-03-05 | 2013-01-02 | 胜利油田胜利勘察设计研究院有限公司 | Multifunctional annular oil-gas-water multiphase flow corrosion simulation test device |
| CN203822283U (en) * | 2014-04-10 | 2014-09-10 | 兰州科庆仪器仪表有限责任公司 | Three-phase-metering mixed-transportation multifunctional integrated device |
| CN104180160A (en) * | 2014-09-01 | 2014-12-03 | 汉纬尔机械(上海)有限公司 | Oil-gas mixing transportation system for screw compressor |
| CN204782979U (en) * | 2015-07-14 | 2015-11-18 | 西安长庆科技工程有限责任公司 | Small -size heterogeneous measurement integrated device |
| CN205330651U (en) * | 2016-02-02 | 2016-06-22 | 吴茜 | Heterogeneous measurement in oil field is defeated device thoughtlessly |
| CN105840169A (en) * | 2016-05-30 | 2016-08-10 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Pried type oil-gas-separation single-well metering device and metering method thereof |
| WO2018003731A1 (en) * | 2016-06-28 | 2018-01-04 | 日曹エンジニアリング株式会社 | Method for transporting multiphase liquid and device for same |
| JP2018043221A (en) * | 2016-09-16 | 2018-03-22 | 旭化成株式会社 | Treatment method of produced water from oil filed and gas field |
| CN109488882A (en) * | 2016-10-08 | 2019-03-19 | 武汉齐达康能源装备有限公司 | A kind of gas-liquid delivery supercharging device and method with wire mesh demister |
| CN107083950A (en) * | 2017-04-24 | 2017-08-22 | 延长油田股份有限公司 | Calibration system and its scaling method based on Weighing type single well metering device |
| CN107060729A (en) * | 2017-06-15 | 2017-08-18 | 上海诺仪表有限公司 | A kind of individual well multi-phase flow meter |
| CN213840500U (en) * | 2020-11-27 | 2021-07-30 | 北京星油科技有限公司 | Multiphase mixed transportation intelligent prying set |
| CN112762358A (en) * | 2020-12-28 | 2021-05-07 | 官天日 | Multiphase flow mixing and conveying device |
| CN214171961U (en) * | 2020-12-31 | 2021-09-10 | 广东管辅能源科技有限公司 | Multiphase flow mixed transportation device and multiphase flow mixed transportation application system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113550730A (en) | 2021-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113550730B (en) | Multiphase metering mixed transportation system and multiphase metering mixed transportation method | |
| CN100526814C (en) | Three-phase flow automatic measuring method and device for oil, gas and water | |
| CN107083950B (en) | Calibration system and calibration method based on weighing type single well metering device | |
| CN204782979U (en) | Small -size heterogeneous measurement integrated device | |
| CN203271708U (en) | Skid-mounted oil-gas separation metering tester | |
| CN101260802A (en) | Oil, gas and water three phase oil well continuous metering device and its measurement method | |
| CN201438122U (en) | Automatic crude oil liquid volume and water content metering device | |
| CN107587868B (en) | Oil well metering integrated device | |
| CN201635722U (en) | Single-well three-phase automatic metering device of oil field | |
| CN216952632U (en) | Multifunctional integrated system for metering and conveying oil gas on oil well site | |
| CN112593925B (en) | Oil field multiphase flow online measurement equipment and measurement method | |
| CN205558891U (en) | Binary formula oil well three -phase automatic measurement ware | |
| CN201554460U (en) | Multiphase flow gas real-time on-line dedicated gas sample collector | |
| CN210289739U (en) | Oil field oil recovery well head liquid production volume metering device | |
| CN106869903B (en) | Metering device | |
| CN108625848B (en) | Unpowered automatic liquid discharge metering device and metering method thereof | |
| CN215597055U (en) | External reverse unlocking integrated mixed transportation device | |
| CN215446046U (en) | Intelligent metering and monitoring integrated system for crude oil gathering and conveying line | |
| CN108387292A (en) | Gas well three phase metering separation control system and oil-water interfaces metering method | |
| CN212228187U (en) | Remove well head flow calibration device | |
| CN106289428B (en) | Cool down device and metering system | |
| CN109839154B (en) | Oil well metering system and method | |
| CN210798947U (en) | Single-well crude oil three-phase flow metering device | |
| CN202471466U (en) | Multiphase flow liquid online sampling device based on rotational flow | |
| EP1175614A1 (en) | Arrangement for improved water-oil ratio measurements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |