Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
The application is illustrated below with reference to Fig. 1 Fig. 2.
As shown in Figure 1, being a kind of structural framing that the embodiment of continuous automatic well-selecting metering system provides of the utility model
Schematic diagram, the system include: test separator 1, the first multiple-way valve 2, the second multiple-way valve 3, gas phase measurement loop group 4 and liquid phase meter
Measure loop sets 5.
The import of test separator 1 is for obtaining fluid to be batched, for example, the import of test separator 1 can be connected
In pipeline road.
Fluid to be batched refers to crude oil, associated gas or the two mixture etc..
The gas vent of test separator 1 is connect with the import of the first multiple-way valve 2, liquid outlet and the second multiple-way valve 3
Import connection.
The petroleum of input test separator 1 obtains crude oil and associated gas, wherein association after the separation of test separator 1
Gas leads to the first multiple-way valve 2, and crude oil leads to the second multiple-way valve 3.
Gas phase measurement loop group 4 includes: the mutually different gas phase measurement loop 41 of at least two measures ranges, each gas phase meter
The air inlet in amount circuit 41 is connect with the outlet of the first multiple-way valve 2 respectively.
It should be noted that the quantity and range of gas phase measurement loop 41 can be arranged according to actual needs.
For example, it is assumed that the flow of associated gas can be 100 to 200, then, gas phase measurement loop 41 can be 3, metering
Range is 90 to 130,120 to 160,150 to 190 respectively.
It should be understood that the range of each gas phase measurement loop 41 can have the part of overlapping, for example, two gas phase measurement loops
41 measures range can be respectively 100 to 150 and 120 to 160, wherein 120 to 150 be exactly the part being overlapped.Setting weight
Folded part can increase the measures range of each gas phase measurement loop 41, the minor change of associated gas is avoided to cause more than first
The frequent switching of port valve 2.
Similarly, the range of each gas phase measurement loop 41 can not also be overlapped, for example, two gas phase measurement loops 41
Measures range can be respectively 100 to 150 and 170 to 190.
It should be understood that the specific measures range of each gas phase measurement loop 41 can be arranged according to actual needs, each gas phase
The span of the measures range of measurement loop 41 can be mutually the same, can also be different.For example, the meter of 3 gas phase measurement loops 41
Measuring range can be respectively 100 to 200,200 to 300 and 300 to 500.Wherein, the metering of preceding 2 gas phase measurement loops 41
The span of range is identical, is all 100, and the span of the measures range of the 3rd gas phase measurement loop 41 is exactly 200, with preceding 2 gas phases
The span of the measures range of measurement loop 41 is different.
Preferably, the measures range of each gas phase measurement loop 41 covers the possible metering of whole of association throughput
Value.
It should be noted that possible variable refer to the flow of associated gas to be measured maximum value and minimum value it
Between in the range of, including maximum value and minimum value, any one value therein are exactly possible variable.
For example, it is assumed that the possible variable of the flow of associated gas is 100 to 400, measured back then 3 gas phases can be set
Road 41, the measures range of this 3 gas phase measurement loops 41 are respectively 100 to 200,200 to 300,300 to 400;Also it can be set
2 gas phase measurement loops 41, the measures range of this 2 gas phase measurement loops 41 are respectively 100 to 300,300 to 400.
Metering loop sets 5 include: the mutually different Metering circuit 51 of at least two measures ranges, each liquid phase meter
The inlet in amount circuit 51 is connect with the outlet of the second multiple-way valve 3 respectively.
For the explanation of this part of Metering loop sets 5, it is referred to above-mentioned saying to gas phase measurement loop group 4
It is bright, gas phase measurement loop group 4 is different only in that for measuring associated gas, and Metering loop sets 5 are for measuring crude oil, herein
It repeats no more.
It should be noted that the first multiple-way valve 2 can be according to manually or automatically controlling, by outlet and any one gas phase meter
It measures circuit 41 to be connected, the second multiple-way valve 3 can be according to manually or automatically controlling, by outlet and any one Metering circuit 51
Conducting, to realize the metering to different flow rank, to meet the needs of finely measuring.
Preferably, gas phase measurement loop group 4 may include that 2 measures ranges are different, and cover association to be measured
The gas phase measurement loop 41 of whole flow values of gas, Metering loop sets 5 may include that 2 measures ranges are different,
And the Metering circuit 51 of whole flow values of crude oil to be measured is covered, the first multiple-way valve 2 and the second multiple-way valve 3 can be with
For MOV valve, MOV valve can switch each gas phase measurement loop 41 or liquid phase in gas phase measurement loop group 4 according to the control of controller
Each Metering circuit 51 in measurement loop group 5.
It is illustrated by taking the metering to associated gas as an example, crude oil is similarly.
Since the measures range of 2 gas phase measurement loops 41 is different, then can be first by the outlet of MOV valve and a large amount of
It is a large amount of to find that the flow of associated gas is less than by the metering of the gas phase measurement loop 41 of wide range for the gas phase measurement loop 41 of journey
The measures range of the gas phase measurement loop 41 of journey, then controller after receiving metric results, judges to find itself and wide range
The measures range of gas phase measurement loop 41 be not inconsistent, be less than minimum, then control MOV valve and switch over, by with small-range
The outlet conducting that gas phase measurement loop 41 connects, closes the outlet connecting with the gas phase measurement loop 41 of wide range, switches to small
The gas phase measurement loop 41 of range measures the flow of associated gas.
It should be understood that can be with manual switching MOV valve.
A kind of continuous automatic well-selecting metering system provided in this embodiment is divided fluid to be batched by test separator 1
It for crude oil and associated gas, and measures, the yield of crude oil and associated gas can be measured simultaneously, and by respectively in gas respectively
More than two measures ranges mutually different measurement loop is set in phase measurement loop group 4 and Metering and loop sets, it can
So that measurement loop is coped with the metering of a variety of yield ranks, meets the metering requirements of a variety of yield, and the meter of each measurement loop
It is different to measure range, selects measures range measurement loop appropriate to be measured, can be improved the precision of metering, it is provided by the present application
Continuous automatic well-selecting metering system can satisfy the metering of oil, gas yield big for well yield and in the high situation of gas-oil ratio,
Also it is able to satisfy that well yield is small and the metering of oil, gas yield in the low situation of gas-oil ratio, practicability are stronger simultaneously.
As shown in Fig. 2, being a kind of structure that the other embodiments of continuous automatic well-selecting metering system provide of the utility model
Block schematic illustration is further described the application on the basis of above-described embodiment.
Optionally, in some embodiments, gas flowmeter 42 can be set on each gas phase measurement loop 41.
It should be understood that gas flowmeter 42 can be set and measure back in gas phase for measuring to the flow of associated gas
The measures range at any place in road 41, each gas phase measurement loop 41 is also determined by the measures range of gas flowmeter 42.
Optionally, in some embodiments, which can also include: the first controller 6, the
One controller 6 is connect with the control terminal of the first multiple-way valve 2, is also connect respectively with each gas flowmeter 42, for according to each gas
The outlet of first multiple-way valve 2 and any gas phase measurement loop 41 are connected the metric results of flowmeter body 42.
It should be noted that the first controller 6 is added in continuous automatic well-selecting metering system, can be realized automatically for
The control of first multiple-way valve 2 adjusts used gas phase measurement loop 41 automatically according to flow, this is continuous automatic in order to improve
The degree of automation for selecting well metering system keeps it more practical, it will be understood that, can also be with after the application removes the first controller 6
It realizes its function, and the function of only controlling the first multiple-way valve 2 that the first controller 6 executes, existing dress can be passed through
Set realization, that is to say, that the connection relationship and control planning of the first controller 6 and the first multiple-way valve 2 belong to the prior art, no
There are improvement.
For example, the first controller 6 can be programmable PLC controller.
Optionally, in some embodiments, fluid flowmeter 52 can be set on each Metering circuit 51.
It should be understood that fluid flowmeter 52 can be set for measuring to the flow of crude oil in Metering circuit
The measures range at any place in 51, each Metering circuit 51 is also determined by the measures range of fluid flowmeter 52.
Optionally, in some embodiments, which can also include: second controller 7, the
Two controllers 7 are connect with the control terminal of the second multiple-way valve 3, are also connect respectively with each fluid flowmeter 52, for according to each liquid
The outlet of second multiple-way valve 3 and any Metering circuit 51 are connected the metric results of flowmeter body 52.
It should be noted that in continuous automatic well-selecting metering system be added second controller 7, can be realized automatically for
The control of second multiple-way valve 3 adjusts used Metering circuit 51 automatically according to flow, this is continuous automatic in order to improve
The degree of automation for selecting well metering system keeps it more practical, it will be understood that, can also be with after the application removes second controller 7
It realizes its function, and the function of only controlling the second multiple-way valve 3 that second controller 7 executes, existing dress can be passed through
Set realization, that is to say, that the connection relationship and control planning of second controller 7 and the second multiple-way valve 3 belong to the prior art, no
There are improvement.
For example, second controller 7 can be programmable PLC controller.
Optionally, in some embodiments, between the gas vent of test separator 1 and the import of the first multiple-way valve 2
It is also provided with the first regulating valve 8, for adjusting the gas pressure in test separator 1.
For example, the first regulating valve 8 can be PV valve.
Optionally, in some embodiments, between the liquid outlet of test separator 1 and the import of the second multiple-way valve 3 also
The second regulating valve 9 can be set, for adjusting the liquid level in test separator 1.
For example, the second regulating valve 9 can be LV valve.
Optionally, in some embodiments, which can also include: 10 He of third multiple-way valve
Third controller 11, the import of third multiple-way valve 10 are connect at least one inlet line, and each inlet line is belonging respectively to difference
Oil field individual well, the outlet of third multiple-way valve 10 connect with the import of test separator 1, third controller 11 and third multiple-way valve
10 control terminal connection, the import for controlling third multiple-way valve 10 are connected with any inlet line.
It should be understood that third multiple-way valve 10 can also manually control, third controller 11 is added and is intended merely to improve it automatically
Change degree uses it more convenient.The function of only controlling third multiple-way valve 10 that third controller 11 executes, can pass through
Existing device is realized, that is to say, that the connection relationship and control planning of third controller 11 and third multiple-way valve 10 belong to existing
There is technology, there is no improve.
For example, third controller 11 can be programmable PLC controller.
For example, the import of third multiple-way valve 10 can connect 7 mouthfuls of individual wells, it can be according to the control selections of third controller 11
The individual well of required metering.
Optionally, in some embodiments, the gas outlet of each gas phase measurement loop 41 can be with the outlet of oil field individual well
Line connection.
Optionally, in some embodiments, the liquid outlet in each Metering circuit 51 can be with the outlet of oil field individual well
Line connection.
Below with reference to the scheme of the various embodiments described above, it is further described with a specific example.
By taking the measuring station in certain overseas oil field as an example, the measured well yield range of the measuring station is 100-9500BLPD, gas
Oil than range be 540-1000SCF/STB, entire metering device can be divided into multiple-way valve select well system, test separator system and
PLC control system.
PLC control system includes the PLC operation panel for selecting well, and the individual well that setting PLC operation panel measures needed for selecting leads to
Cross signal wire and signal reached into control cabinet beside multiple-way valve, control the rotation of multiple-way valve, make the suction line of multiple-way valve with to
The pipeline of well logging connects, to realize Intelligent Selection well.
Test separator 1 can be horizontal separator, internal diameter 2600mm, long 8000mm, have 1 to come wait log well on separator
Liquid import header, 1 gaseous phase outlet header, 1 liquid-phase outlet header, safety valve, 3 sewage draining exits, there are also pressure transmitter, liquid
The instrument devices such as position transmitter.
Selected well production fluid is entered by multiple-way valve outlet line from 1 top inlet of test separator, and gas-liquid two is separated into
Xiang Houzai is measured respectively.For liquid and gas there are two range circuit, big small-range covers all access well capacity predicted values,
And wide range and small-range have cross section.
It is 707-11210Nm3/h that a large amount of range loops of liquid phase, which can survey liquid yield range, and a small amount of range loops of liquid phase can survey liquid
Volume range is 64-1300Nm3/h;It is 6.6-62.9m3/h that a large amount of range loops of gas phase, which can survey gas yield range, and gas phase is a small amount of
It is 0.66-13.2m3/h that range loop, which can survey gas yield range,.
A range circuit is selected according to the prediction production capacity of access well first, wherein prediction production capacity can for Liquid output and
Gas-oil ratio, it is assumed that a small amount of range loops of liquid phase have been selected, the switch of circuit MOV valve is controlled further according to the data of flowmeter actual measurement,
If flow value is exactly in 0.66-13.2m3/h, meter reading is this well liquid phase flow rate, if being more than this circuit range model
It encloses, then MOV valve breakdown, another circuit MOV valve is opened, and another range circuit is automatically switched to.It can automatically switch also to cut manually
It changes, i.e., in addition to above-mentioned automatic switchover, suitable range circuit can also be selected in Central Control Room manual switching.
2 PV valves are provided on two range circuit of gas phase, 2 PV valves only use one simultaneously, to control test separation
Pressure is stablized in device 1 is provided with 2 LV valves on normal value, two range circuit of liquid phase, and 2 LV valves only use one simultaneously, use
To control in test separator 1 level stability in normal value.
Before different oil well rotations metering, automatic drain is first carried out in test separator 1, i.e., device liquid level to be separated is from normal value
Individual well is switched by PLC system again when dropping to low value, when amount of the upper a bite individual well in test separator is reduced to lower value, then
The lower a bite individual well of switching carrys out liquid and enters test separator, and the period of rotation metering is 2 hours, is enough this period adequately to empty
Upper a bite individual well in test separator remains associated gas, to reduce the back-mixing between each individual well medium.
Above-mentioned gas phase and liquid phase fluid import main header after being measured again.
In the description of this specification, reference term " embodiment one ", " embodiment two ", " example ", " specific example " or
The description of " some examples " etc. means that specific method, device or feature described in conjunction with this embodiment or example are contained in this reality
With at least one novel embodiment or example.
In the present specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.
Moreover, specific features, method, apparatus or the feature of description can be in any one or more of the embodiments or examples with suitable
Mode combines.
In addition, without conflicting with each other, those skilled in the art can be by difference described in this specification
The feature of embodiment or example and different embodiments or examples is combined.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.