CN104265265B - A kind of direct metering method of single-well crude oil oil and gas production - Google Patents
A kind of direct metering method of single-well crude oil oil and gas production Download PDFInfo
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- CN104265265B CN104265265B CN201410436167.2A CN201410436167A CN104265265B CN 104265265 B CN104265265 B CN 104265265B CN 201410436167 A CN201410436167 A CN 201410436167A CN 104265265 B CN104265265 B CN 104265265B
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- 239000003921 oil Substances 0.000 title claims abstract description 137
- 239000010779 crude oil Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 235000019198 oils Nutrition 0.000 claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000007906 compression Methods 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000003129 oil well Substances 0.000 claims description 16
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 58
- 239000012071 phase Substances 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 238000005191 phase separation Methods 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000001746 atrial effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- -1 sandstone Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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
- E21B47/00—Survey of boreholes or wells
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a kind of direct metering method of single-well crude oil oil and gas production, the oil water mixture produced in individual well unit interval t is placed in compressible hermetic container, before and after measurement compression:The volume of hermetic container, compression front volume are V1, after compression, volume is V2；With the pressure of gas in hermetic container, the pressure before compression are P1, the pressure after compression is P2；With the temperature of gas in hermetic container, the temperature before compression are T1, the temperature after compression is T2；The volume of oil water mixture is V for the volume flow of individual well oil water mixtureLiquid/t.The method that the present invention is provided can obtain fast and exactly the volume flow of gas phase and liquid phase using the diversity before and after liquids and gases compression, and then obtain oil, the mass flow of gas and water three-phase by volume compression method.Measurement process need not carry out oil, gas and water three phase separation, and measuring method is easy, can also realize the cold defeated of crude oil during flow measurement simultaneously.
Description
Technical field
The present invention relates to crude oil measurement field, more particularly to a kind of direct metering method of single-well crude oil oil and gas production.
Background technology
Oil field oil production is the important indicator of oil field performance.For the metering of crude oil is the direct expression of field output.
Oil field is distributed different oil wells in zones of different and is recovered the oil.Domestic Oil-production Enterprises, most to adopt at present
Water flood recovery technology.Water flood recovery technology is to inject oil reservoir from water injection well using the water that water injection equipment meets the requirements quality, is protected
Formation pressure is held, displacement underground crude oil, to oil well, is that one kind is artificially injected water in oil reservoirs hole, using water as displacing agent
By more crude oil from oil reservoir a kind of displacement oil recovery technique out.Water filling can improve oil field development speed and recovery ratio,
And it is good in economic efficiency, therefore water flooding recovery has become the major way of numerous oil field developments.
From the crude oil that oil well is directly gathered, which contains the water injected during oil recovery, and has separate from oil natural
Gas, therefore be mixture of oil, water and gas, typically also containing impurity such as sandstone, wax, salt.Therefore, Oil-production Enterprises typically arrange treating stations,
Carry out operating except sandstone impurity, oil-water separation, desalination etc., and oil-water-gas isolated water is returned to into oil well injection ground
Under.
Therefore, current oil field fuel gauging mode to be taken collected by pipeline many mouthfuls of oil wells and is delivered to measuring station and united
One metering.
Crude oil measurement mainly has two ways：One kind is effusion meter measurement；Another kind is storage tank measurement.
Effusion meter measurement typically measures the volume flow of oil with flow measurement, then measures oil with corresponding method
Density value, moisture content and relevant temperature and pressure value, to obtain water-free oil and oil product in standard conditions i.e. temperature
It it is 20 DEG C, pressure is the oil mass under a normal atmosphere 0.101325MPa in units of quality, such as CN 103244099A are public
A kind of lever flowmeter is opened, compact conformation is easy for installation, strong antijamming capability, can realize under environment under high pressure that down-hole is flowed
The accurate measurement of amount.But, just the crude oil of extraction contains silt and oil gas, and the silt and oil gas are mixed in or are miscible in crude oil
In oil water mixture, therefore when directly being measured using effusion meter, such as spinner flowmeter, is waved silt in oil water mixture
The oil gas for sending can block, disturb the measurement of spinner flowmeter, and the measurement data is inaccurate, or even the effusion meter is blocked
So that can not work completely.
Storage tank measurement is the height that storage tank inner fluid position is measured with hand-dipping or liquid level instrument, calculates volume, together
When by relevant code specify, measure oil temperature, density value and moisture content, to obtain water-free oil and oil product in tank with quality be
The oil mass of unit.As CN 203672441U disclose a kind of measuring tank for oil measurement, artificial reading can be avoided completely
The error caused during the data of gauge glass, and greatly improve safety；CN 103471676A disclose a kind of non-stationary flow
The online flow measurement device of quantity of fluid, can fluid flow carry out correct measurement and regulation.
But, the mode of measuring station unification metering cannot realize the metering of single port oil well yield, also cannot just understand single port
The oil-producing situation of oil well, and for the loss (oil leak etc.) of petroleum pipeline cannot be estimated, cause variable to have very with oil production
Big error.For newly making hole, due to being that single port oil well cannot realize centralized measure, and measuring station cost is individually set up
It is too high, it is uneconomical.Therefore, it is badly in need of realizing the device of single port oil well metering, and requires that flow measurement device is explosion-proof, accurately may be used
By, safeguard that simple and convenient, cost is relatively low, realization is easy etc..
Crude oil single well metering is always a global difficult problem, this is because the direct metering of crude oil has very big challenge
Property：Oil composition is complicated；Crude oil environment is complicated；Crude oil flow is complicated.Therefore, develop the crude oil that disclosure satisfy that oil extraction operating mode
Accurately metering device has very big technical difficulty.
The content of the invention
An object of the present invention is, for the deficiencies in the prior art, to propose that a kind of single-well crude oil oil and gas production is directly counted
Amount method and realize the device of the method.
The direct metering method of single-well crude oil oil and gas production of the present invention can measure what is existed efficiently against single-well crude oil
Difficulty, accurately and quickly measures oil, the flow of gas and water in crude oil.The measuring method that the present invention is provided is easy, measurement process without
Oil, gas and water three phase separation need to be carried out, and the transport of crude oil is not affected during metering, moreover it is possible to while realizing crude oil
It is cold defeated.
It is that, up to this purpose, the present invention is employed the following technical solutions：
The working media of method and device of the present invention is crude oil.Those skilled in the art knows, newly produces
Crude oil contain water, therefore be oil water mixture, hereinafter referred to as " liquid ".The crude oil for newly producing can volatilize generation gas, be former
Oily associated gas, hereinafter referred to as gas.Mixture containing oil-water-gas three in the compressible hermetic container.
On the one hand, the invention provides a kind of direct metering method of single-well crude oil oil and gas production：
Methods described is that the oil water mixture produced in individual well unit interval t is placed in compressible hermetic container, measurement
Before and after compression:
The volume of hermetic container, compression front volume are V1, after compression, volume is V2；With,
The pressure of gas in hermetic container, the pressure before compression are P1, the pressure after compression is P2；With,
The temperature of gas in hermetic container, the temperature before compression are T1, the temperature after compression is T2；
The volume of oil water mixture isThe volume flow of individual well oil water mixture
Measure as VLiquid/t。
Further, measure the density p of the oil water mixtureLiquid, the oil water mixture of production in individual well unit interval t
Quality is mLiquid=ρLiquidVLiquid；According to formula mOil=(VLiquidρWaterρOil-mLiquidρOil)/(ρWater-ρOil) calculate mOil, then the quality stream of single-well crude oil
Measure as mOil/ t, volume flow are VOil=mOil/ρOilT, the mass flow of water is (mLiquid-mOil)/t。
Preferably, the oil water mixture first carried out the pre- place for removing solid particle before compressible hermetic container is placed in
Reason, the solid particle is sandstone.
Times of the unit interval t of the present invention for needed for compressible hermetic container completes first compression, this area skill
Art personnel can be selected according to specific field condition and specific requirement, and typical but non-limiting example includes, the time
For 0.1s-120s, preferred 0.5s-10s, further preferred 0.8-3s, such as 0.9s, 1s, 1.5s, 2s, 2.5s or 2.9s.
Crude oil measurement method of the present invention is suitable for the working condition measuring of larger flow change in practice, and the unit interval, t was longer, institute
The flow of measurement crude oil is less；Conversely, unit interval t is shorter, the flow of measured crude oil is bigger.
Volume compression of the present invention can be compressed for one or many, many second compressions of preferably stable reciprocating motion.
Those skilled in the art knows that the crude oil for producing can volatilize gas, therefore the present invention in placement process
The direct metering of crude oil vapor yield adopts volume compression method, using the Incoercibility of the compressibility and liquid of gas, will
In individual well unit interval t, the oil water mixture of production is placed in hermetic container, and the hermetic container can be compressed, hermetic container compression
Front state is state 1, and the state after compression is state 2.Before compression, the volume of hermetic container is V1, wherein gas and profit be mixed
Compound volume is respectively VGasAnd VLiquid, the pressure and temperature of gas is respectively P1And T1；After compression can volume be V2, wherein gas and
Oil water mixture volume is respectively VAir pressure contractsAnd VLiquid, the pressure and temperature of gas is respectively P2And T2；For before compression and two after compression
Individual state has respectively：
V1=VLiquid+VGas (1)
V2=VLiquid+VAir pressure contracts (2)
Formula (2)-(1) has：
V2-V1=VAir pressure contracts-VGas (3)
V2With V1Can be obtained by measurement, therefore V2With V1For known.
VGas=VAir pressure contracts+(V1-V2) (4)
Gas in hermetic container before compression after pressure P1、P2With temperature T before and after compression1、T2Passed by pressure respectively
Sensor is provided with temperature sensor, is given data.Substituting into the equation of gas state has：
P1VGas/T1=P2VAir pressure contracts/T2 (5)
Simultaneous formula (4) and (5) are so as to trying to achieve：
Thus volume V of oil water mixture can be calculatedLiquid, so as to obtain volume flow V of individual well oil water mixtureLiquid/t。
The density p of oil water mixture in hermetic container is measured by densityLiquid, water is, it is known that being respectively with the density of oil
ρWaterAnd ρOil, then according to equation below：
mLiquid=ρLiquidVLiquid (8)
mLiquid=mWater+mOil (9)
VLiquid=VWater+VOil (10)
VLiquid=mWater/ρWater+(m-mWater)/ρOil (11)
Can obtain
mOil=(VLiquidρWaterρOil-mLiquidρOil)/(ρWater-ρOil) (12)
Obtain mOil, then the mass flow of single-well crude oil is mOil/ t, the then matter of the water that single-well crude oil is taken out of in unit interval t
Amount mWater=mLiquid-mOilAlso just obtain, so as to the mass flow of water is mWater/ t, the volume flow of crude oil is VOil=mOil/ρOilt。
Under known standard state, the density of accompanying gas with crude oil is ρGas, sta, the standard state therapeutic method to keep the adverse QI flowing downwards can be obtained by the equation of gas state
Body volume is：
Then in hermetic container gas quality mGas=ρGas, staVGas, sta, then the mass flow of the gas that crude oil is volatilized is mGas/
t。
The above-mentioned calculating of the present invention, can be by manual calculation, it is also possible to by man-machine interaction, completed by computer.
As a kind of optimal technical scheme, present invention preferably employs sensor direct measurement above-mentioned parameter, the parameter is directly conveyed into
Computing unit, records each m respectively by computing unitOil、mWater、mGasValue, by corresponding software program, its mass flow also may be used
Directly obtain respectively.
The single-well crude oil metering method that the present invention is provided only need to be by computer recording crude oil during measurement oil flow
Flow into hermetic container in time, compression before and after gas in closed vessel pressure and temperature, compression before and after hermetic container body
Product and hermetic container in oil water mixture density, by default program in computer, directly can read crude oil and
The volume flow of its gas for volatilizing and mass flow.
The volume of compressible hermetic container of the present invention can indirectly measurement be obtained by grating scale, compressible hermetic container by
Motor or oil-engine driven toggle, linear electric motors or hydraulic system drive, and which is directly connected to oil well
On oil pipeline, connected mode is fixed or movable skid-mounted formula.
Flow measurement device of the present invention is movable skid-mounted formula, it is intended that the device can be moved from a bite oil well
To another mouthful of oil well, the crude output of different oil wells is convenient for measuring.
The compressible hermetic container arrival end is all connected on the petroleum pipeline of oil well with the port of export, and there is bypass to connect
It is logical.Pipeline of the bypass for the into or out compressible hermetic container of control oil water mixture.
Preferably, the arrival end for pressing hermetic container is connected to oil pipeline by controlling valve with the port of export.
Preferably, the control valve is by machinery and/or electric control.
Compressible hermetic container of the present invention, if its play it is of the present invention sealing and compressible function i.e.
Can, those skilled in the art can be chosen from the prior art, or spirit of the invention is voluntarily manufactured.
The volume compression of compressible hermetic container of the present invention is compressed for one or many, and preferably stable is reciprocal
The open circulation of motion continuous several times is compressed.The operation principle of open circulation of brief introduction below compression：
(1) feed liquor：The liquid inlet control valve valve for connecting compressible hermetic container with oil pipeline is opened, and crude oil is from petroleum pipeline
Road enters compressible hermetic container, and compressible hermetic container piston reaches motion stop, and feed liquor terminates, and liquid inlet control valve valve is closed
Close；
(2) compress：The discharge opeing control valve door that enters for connecting compressible hermetic container with oil pipeline is in closed mode, drives
Dynamic device drives the piston compression crude oil gas-liquid mixture of compressible hermetic container, is compressed to pressure preset or volume is default
Value；
(3) discharge opeing：After compression process terminates, discharge opeing control valve door is opened, and the crude oil gas-liquid mixture after compression is discharged.
If repeatedly open circulation, then next restart feed liquor-compression-discharge opeing circulation.
To be more beneficial for performing the single-well crude oil yield metering method of the present invention, more accurate result is reached, it is also more square
Just application target.The present invention goes back a kind of device for performing the single-well crude oil yield metering method of otherwise designed.This area
It will be clearly understood that the device is preferred device, which is not meant to the single-well crude oil yield metering side of the present invention to technical staff
Method has to rely on the device.
An object of the present invention is also resided in, there is provided a kind of metering dress for performing single-well crude oil yield metering method of the present invention
Put, described device includes：Power section, working portion and pipeline portions；
The power section is made up of master cylinder and bidirectional piston bar, and the piston of the bidirectional piston bar is located at master cylinder
Interior, the bar of bidirectional piston bar laterally passes master cylinder；
The working portion is positioned at the symmetrically placed of the master cylinder left and right sides：Plunger case and plunger, respectively with plunger
The measuring apparatus that cylinder and microcomputer are connected and the control device for controlling the inflow and discharge of crude oil in plunger case；It is described symmetrical
Two plunger cases are connected to the two ends of bidirectional piston bar by plunger；The control device is by the oil transportation that is connected with plunger case
Pipeline is connected with the plunger case；
The pipeline portions are the hydraulic circuit for driving master cylinder and control device, its one end and the master cylinder and described
Control device is connected, and the other end is connected to Hydraulic Station.
The pipeline portions are connected with Hydraulic Station by two-position four-way solenoid valve.
Fairlead and wear ring are installed between the plunger case and plunger.The effect of the fairlead and wear ring is
Prevent the crude oil impurity such as blocking plunger motion such as sandstone, wax.
The control device is into discharge opeing hydraulic cylinder and the discharge opeing control valve of entering being installed on the hydraulic cylinder, the hydraulic pressure
Two chamber of cylinder or so is connected with pipeline respectively, and the control valve passes perpendicularly through oil pipeline.
At least two sets of the control device is located at the master cylinder left and right sides respectively.
The pipeline portions are divided into two branch roads：Master cylinder left chamber branch road and master cylinder right chamber branch road, the master cylinder are left
One interface of chamber branch road connection master cylinder left chamber and two-position four-way solenoid valve, and it is right with the feed liquor hydraulic cylinder of the left and right sides or
Left chamber is connected, and the left or right chamber of discharge opeing hydraulic cylinder is connected；The master cylinder right chamber branch road connection master cylinder right chamber and two-position four-way
Another interface of electromagnetic valve, and being connected with the left or right chamber of the feed liquor hydraulic cylinder of the left and right sides, discharge opeing hydraulic cylinder it is right or left
Chamber is connected.
The pipe that the described medianly zygomorphic discharge opeing hydraulic cylinder right side or left chamber are connected with described master cylinder right chamber branch road
Check valve and pressure switch are connected on road, the described two ends of check valve are connected with two interfaces of two-position two-way solenoid valve.
When the check valve place hydraulic oil pipeline is path, discharge opeing control valve is closed or closing process.
The speed of plunger case described in the ram compression increases with the increase of surveyed oil pipeline Crude Oil flow.
The volume of the plunger case is obtained by optical grating ruler measurement plunger position.
Compared with prior art, the invention has the advantages that：
1st, the method for the present invention is simple, can quickly and accurately measure the flow of crude oil.
2nd, the method for the present invention defeated is integrated oil flow measurement cold with crude oil.
3rd, the inventive method can measure oil, the flow of gas and water in crude oil simultaneously respectively, and need not carry out oil, gas and water three-phase
Separate.
Description of the drawings
Fig. 1 is the principle sketch of the inventive method.
Fig. 2 is the structural representation of the crude oil metering device that the present invention is provided.
Wherein：Y1, discharge opeing control valve；Y2, liquid inlet control valve；Y3, compressible hermetic container；Y4, piston；Y5, connecting rod；
Y6, driving means；Y7, oil pipeline；1, left side feed liquor hydraulic cylinder and liquid inlet control valve；2, left side discharge opeing hydraulic cylinder and discharge opeing control
Valve processed；3, left side plunger case；4, left side fairlead and wear ring；5, left side plunger；6, master cylinder；7, bidirectional piston bar；8, it is right
Lateral column plug；9, right side fairlead and wear ring；10, right side plunger case；11, right side discharge opeing hydraulic cylinder and discharge opeing control valve；12, it is right
Side feed liquor hydraulic cylinder and liquid inlet control valve；13, right atrial pressure relay；14, right side two-position two-way solenoid valve；15, right one-way
Valve；16, left pressure relay；17, left side two-position two-way solenoid valve；18, left side check valve；19, two-position four-way solenoid valve；
20, left side oil pipeline；21, right side oil pipeline.
Specific embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
Fig. 1 is the principle sketch of the inventive method.As shown in figure 1, compressible hermetic container Y3 is installed on oil pipeline Y7
On, and be connected with oil pipeline Y7, liquid inlet control valve Y2 and discharge opeing control valve Y1 are additionally provided with its junction, it is defeated for controlling
Oil-piping Y7 Crude Oils flow in or out compressible hermetic container Y3：When liquid inlet control valve Y2 is moved to the left, liquid flowing valve is beaten
Open, crude oil enters compressible container Y3 from oil pipeline Y7；When liquid inlet control valve Y2 moves right, liquid flowing valve is closed；Row
Hydraulic control valve Y1 is in the same manner.Driving means Y6 are connected with the piston Y4 of compressible hermetic container Y3 by connecting rod Y5, can be made compressible
Hermetic container Y3 compresses or restores to the original state.
Fig. 2 is the structural representation of the crude oil metering device that the present invention is provided.As shown in Fig. 2 the device of the present invention is divided into
Power section, working portion and pipeline portions.
Power section is made up of master cylinder 6 and bidirectional piston bar 7, and the piston of bidirectional piston bar 7 is in master cylinder 6, double
Master cylinder 6 is passed laterally to the bar of piston rod 7.
Working portion is positioned at 6 left and right sides symmetric position of master cylinder：Plunger case 3,10 and pass through oil pipeline 20,21
Two hydraulic cylinders being connected with plunger case 3,10 and control valve and measuring apparatus；Symmetrical two plunger cases 3,10 by plunger 5,
8 two ends for being connected to bidirectional piston bar 7；Plunger case 3,10 is connected with oil pipeline 20,21, and each plunger case 3,10 is by defeated
Oil-piping 20,21 connects two hydraulic cylinders and control valve respectively：Feed liquor hydraulic cylinder and liquid inlet control valve 1,12 and discharge opeing hydraulic cylinder
And discharge opeing control valve 2,11, two chamber of left and right of hydraulic cylinder is connected with pipeline respectively, and control valve is installed in hydraulic cylinder, and vertically
Through oil pipeline 20,21；Measuring apparatus be connected with plunger case 3,10 and microcomputer respectively for measure pressure, temperature, density and
Volume.
Pipeline portions are used to control master cylinder 6 and control device, its one end and the master cylinder 6 and the control device phase
Even, the other end is connected to Hydraulic Station.
Pipeline portions are divided into two branch roads：6 right chamber branch road of 6 left chamber branch road of master cylinder and master cylinder, 6 left chamber branch road of master cylinder
One interface of connection 6 left chamber of master cylinder and two-position four-way solenoid valve 19, and the right side with the feed liquor hydraulic cylinder 1,12 of the left and right sides
Or left chamber is connected, the left or right chamber of discharge opeing hydraulic cylinder 2,11 is connected；6 right chamber branch road of master cylinder connects 6 right chamber of master cylinder and two
Another interface of four way solenoid valve 19, and be connected with the left or right chamber of the feed liquor hydraulic cylinder 1,12 of the left and right sides, discharge opeing hydraulic pressure
The right or left chamber of cylinder 2,11 is connected.
It is connected on the pipeline that 2,11 right side of medianly zygomorphic discharge opeing hydraulic cylinder or left chamber are connected with 6 right chamber branch road of master cylinder
Check valve 15,18 and pressure switch 13,16, the two ends of check valve 15,18 and two interfaces of two-position two-way solenoid valve 14,17
It is connected, and check valve 15,18 is path when discharge opeing control valve closes oil pipeline 20,21.
Embodiment 1
Compressible hermetic container is collected passing through for individual well production in 1s by the arrival end being connected with oil pipeline and is removed
The oil water mixture of sandstone, after collection is finished, is connected to pressure transducer on hermetic container, temperature sensor, densimeter
And volume measuring meter measure respectively obtain gas in hermetic container pressure be 0.3MPa, temperature is 30 DEG C, oil water mixture
Density is 900kg/m3And the volume of hermetic container is 0.001m3, record data or in data transfer to computer；Measure
After finishing, compression hermetic container to a certain extent, treat it is stable after, then measure the pressure of gas in hermetic container respectively and be
It is 0.0005m that 0.9MPa and temperature are the volume of 35 DEG C and hermetic container3, equally record or data transfer to computer
On.The density for taking former W/O is 1000kg/m3, in crude oil, the density of oil is 850kg/m3, under standard state, the density of gas is
1.5kg/m3.Calculated by technical staff or computer is through default program, show that the flow of liquid phase oil water mixture is
0.000244m3/ s, the mass flow of crude oil are 0.138kg/s, the volume flow of crude oil is 0.000163m3/ s and crude oil volatilization
The mass flow for going out gas is 0.003248m3/s.After measurement is finished, the port of export of the crude oil vapor by compressible hermetic container
Discharge, then measured next time.
Embodiment 2
Compressible hermetic container is gone by the process that the arrival end being connected with oil pipeline collects individual well production in 0.5s
Except the oil water mixture of sandstone, after collection is finished, pressure transducer on hermetic container, temperature sensor, density are connected to
Meter and volume measuring meter measure respectively obtain gas in hermetic container pressure be 0.1MPa, temperature be 20 DEG C, oil water mixture
Density be 960kg/m3And the volume of hermetic container is 0.01m3, record data or in data transfer to computer；Measure
After finishing, compression hermetic container to a certain extent, treat it is stable after, then measure the pressure of gas in hermetic container respectively and be
It is 0.005m that 0.25MPa and temperature are the volume of 25 DEG C and hermetic container3, equally record or data transfer to computer
On.The density for taking former W/O is 1000kg/m3, in crude oil, the density of oil is 850kg/m3, under standard state, the density of gas is
1.5kg/m3.Calculated by technical staff or computer is through default program, show that the stream of liquid phase oil water mixture is
0.000314m3/ s, the mass flow of crude oil are 0.7121kg/s, the volume flow of crude oil is 0.000838m3/ s and crude oil volatilization
The mass flow for going out gas is 0.0101kg/s.After measurement is finished, crude oil vapor is arranged by the port of export of compressible hermetic container
Go out, then measured next time.
Embodiment 3
Compressible hermetic container is collected passing through for individual well production in 2s by the arrival end being connected with oil pipeline and is removed
The oil water mixture of sandstone, after collection is finished, is connected to pressure transducer on hermetic container, temperature sensor, densimeter
And volume measuring meter measure respectively obtain gas in hermetic container pressure be 0.5MPa, temperature be 40 DEG C, oil water mixture
Density is 880kg/m3And the volume of hermetic container is 0.5m3, record data or in data transfer to computer；Measurement is finished
Afterwards, compress hermetic container to a certain extent, treat it is stable after, then measure respectively gas in hermetic container pressure be 1MPa and
It is 0.3m that temperature is the volume of 43 DEG C and hermetic container3, equally record or data transfer on to computer.Take in crude oil
The density of water is 1000kg/m3, in crude oil, the density of oil is 850kg/m3, under standard state, the density of gas is 1.5kg/m3.By
Technical staff calculates or computer is through default program, shows that the flow of oil water mixture is 0.0481m3/ s, crude oil
Volume flow be 0.03845m3/ s, the mass flow of crude oil are the mass flow that 32.684kg/s and crude oil volatilize gas
For 3.131kg/s.After measurement is finished, crude oil vapor is discharged by the port of export of compressible hermetic container, then is surveyed next time
Amount.
Embodiment 4
During the measurement device oil flow of the present invention, double piston-rod 7 is driven by master cylinder 6, driven symmetrical two sets
Plunger system.The compression and measurement of crude oil occurs in plunger case 3,10, pipeline portions connection Hydraulic Station, provides hydraulic pressure for system
Oil.
When two-position four-way solenoid valve 19 is in B positions：
Left side plunger case 3 starts feed liquor, specially：, by Hydraulic Station oil-feed, bidirectional piston bar 7 is to the right for 6 left chamber of master cylinder
Motion；At this moment, 1 right chamber of left side feed liquor hydraulic cylinder also simultaneously oil-feed, right chamber have pressure, and the 1 left chamber oil return of left side feed liquor hydraulic cylinder is extremely
Hydraulic Station, left side liquid inlet control valve valve are moved to the left, and left side liquid flowing valve is opened；Meanwhile, 2 left chamber of left side discharge opeing hydraulic cylinder is entered
Oil, has pressure, right chamber oil return, when the pressure in return line is less than constant-pressure set by left pressure relay 16, pressure after
Electrical equipment 16 disconnects, and left side two-position two-way solenoid valve 17 disconnects, then discharge opeing hydraulic cylinder right chamber in left side passes through 18 oil return of left side check valve,
Left side discharge opeing control valve 2 is closed.
Right side 10 Crude Oil of plunger case is compressed, and starts discharge opeing, specially：Piston rod 7 is moved right, right side plunger case
10 Crude Oils are compressed, and 6 right chamber oil return of master cylinder is to Hydraulic Station；At this moment, the also oil-feed simultaneously of 12 right chamber of right side feed liquor hydraulic cylinder, right
There is pressure in chamber, and the 12 left chamber oil return of right side feed liquor hydraulic cylinder to Hydraulic Station, close by right side liquid flowing valve；Meanwhile, right side discharge opeing control
Valve 11 receives 14 collective effect of right atrial pressure relay 13 and right side two-position two-way solenoid valve, with 10 Crude Oil quilt of right side plunger case
Further compress, the pressure in oil feed line is also gradually increasing, when in pipeline, pressure reaches the setting of right atrial pressure relay 13
During value, pressure switch 13 is closed, then right side two-position two-way solenoid valve 14 is closed, and the hydraulic oil in pipeline enters right side discharge opeing liquid
Cylinder pressure left chamber, left chamber have pressure, and right chamber oil return, right side discharge opeing control valve 11 move right, and right side discharge opeing control valve door is opened, former
Oil is discharged.
After plunger case 10 Crude Oil in right side is discharged, following two-position four-way solenoid valve 19 will switch gear to A positions.
When two-position four-way solenoid valve 19 is in A positions：
Right side 10 feed liquor of plunger case, specially：6 right chamber of master cylinder is transported to the left by Hydraulic Station oil-feed, bidirectional piston bar 7
It is dynamic；At this moment, 12 left chamber of right side feed liquor hydraulic cylinder also simultaneously oil-feed, left chamber have pressure, and the 12 right chamber oil return of right side feed liquor hydraulic cylinder is extremely
Hydraulic Station, right side liquid flowing valve are opened, and right side plunger case 10 starts feed liquor；Meanwhile, the 11 right chamber oil-feed of right side discharge opeing hydraulic cylinder is right
There is pressure in chamber, left chamber oil return, when the pressure in return line is less than constant-pressure set by right atrial pressure relay 13, pressure relay
Device 13 disconnects, and right side two-position two-way solenoid valve 14 disconnects, and 11 left chamber of right side discharge opeing hydraulic cylinder is by 15 oil return of right one-way valve, right
Side discharge opeing control valve is closed.
Left side 3 discharge opeing of plunger case, specially：, to left movement, 6 left chamber oil return of master cylinder is to Hydraulic Station for piston rod 7；At this moment,
The 1 left chamber also oil-feed simultaneously of left side feed liquor hydraulic cylinder, left chamber have pressure, and the 1 left chamber oil return of left side feed liquor hydraulic cylinder is to Hydraulic Station, left side
Liquid flowing valve is closed；Meanwhile, left side discharge opeing control valve 2 receives right atrial pressure relay 13 and right side two-position two-way solenoid valve 14 common
Effect, as plunger case 3 Crude Oil in left side is further compressed, the pressure in oil feed line is also gradually increasing, when pressure in pipeline
When power reaches the setting value of left pressure relay 16, pressure switch 16 is closed, then left side two-position two-way solenoid valve 17 is closed,
Hydraulic oil in pipeline enters 2 right chamber of left side discharge opeing hydraulic cylinder, and right chamber has pressure, and left chamber oil return, left side discharge opeing control valve are opened,
Left side 3 crude oil of plunger case is discharged.
Applicant states, the foregoing is only the specific embodiment of the present invention, but protection scope of the present invention not office
It is limited to this, person of ordinary skill in the field is it will be clearly understood that any belong to those skilled in the art and take off in the present invention
In the technical scope of dew, the change or replacement that can be readily occurred in, within the scope of all falling within protection scope of the present invention and disclosure.
Claims (10)
1. a kind of direct metering method of single-well crude oil oil and gas production, it is characterised in that the profit that will be produced in individual well unit interval t
Mixture is placed in compressible hermetic container, before and after measurement compression:
The volume of hermetic container, compression front volume are V1, after compression, volume is V2；With,
The pressure of gas in hermetic container, the pressure before compression are P1, the pressure after compression is P2；With,
The temperature of gas in hermetic container, the temperature before compression are T1, the temperature after compression is T2；
The volume of oil water mixture isThe volume flow of individual well oil water mixture is
VLiquid/t；
The compressible hermetic container is directly connected on the oil pipeline of oil well；The arrival end for pressing hermetic container with go out
Mouth end is connected to oil pipeline by controlling valve；
The direct metering method of the single-well crude oil oil and gas production is carried out on the direct metering device of single-well crude oil oil and gas production, described
The direct metering device of single-well crude oil oil and gas production includes：Power section, working portion and pipeline portions；
The power section is made up of master cylinder and bidirectional piston bar, and the piston of the bidirectional piston bar is in master cylinder, double
Master cylinder is passed laterally to the bar of piston rod；
The working portion is included positioned at the symmetrically placed post in the symmetrically placed plunger case in the master cylinder left and right sides, the left and right sides
Plug, the measuring apparatus that are connected with plunger case and microcomputer respectively and set with the control of discharge for controlling the inflow of crude oil in plunger case
It is standby；Two symmetrical plunger cases are connected to the two ends of bidirectional piston bar by plunger；The control device by with plunger
The oil pipeline that cylinder is connected is connected with the plunger case；
The pipeline portions include the hydraulic oil pipeline for driving master cylinder and control device, described hydraulic oil pipeline one end with it is described
Master cylinder is connected with the control device, and the other end is connected to Hydraulic Station；
The control device be feed liquor hydraulic cylinder, discharge opeing hydraulic cylinder, the liquid inlet control valve being installed on the feed liquor hydraulic cylinder and
Two chamber of left and right of the discharge opeing control valve being installed on discharge opeing hydraulic cylinder, the feed liquor hydraulic cylinder and discharge opeing hydraulic cylinder respectively with pipeline
Part is connected, and the liquid inlet control valve and discharge opeing control valve pass perpendicularly through oil pipeline；
During the direct metering device measurement oil flow of the single-well crude oil oil and gas production, double piston-rod is driven by master cylinder, is driven
Symmetrical two sets of plungers；The compression and measurement of crude oil occurs in plunger case, and pipeline portions connection Hydraulic Station, is that device is carried
For hydraulic oil.
2. method according to claim 1, it is characterised in that the density p of the measurement oil water mixtureLiquid, individual well unit
In time t, the quality of the oil water mixture of production is mLiquid=ρLiquidVLiquid；According to formula mOil=(VLiquidρWaterρOil-mLiquidρOil)/(ρWater-ρOil) calculate
Draw mOil, then the mass flow of single-well crude oil is mOil/ t, the volume flow of single-well crude oil is VOil=mOil/ρOilT, the mass flow of water
For (mLiquid-mOil)/t。
3. method according to claim 1, it is characterised in that according to formula VGas=V1-VLiquid；Calculate
Go out VGas, sta, then in hermetic container gas quality mGas=ρGas, staVGas, sta, the mass flow of gas is mGas/t。
4. method according to claim 1, it is characterised in that before oil water mixture is placed in compressible container, right
The oil water mixture is removed the pretreatment of solid particle.
5. method according to claim 4, it is characterised in that the solid particle is sand particles.
6. method according to claim 1, it is characterised in that the volume of the compressible hermetic container is indirect by grating scale
Measurement is obtained.
7. method according to claim 1, it is characterised in that the compressible hermetic container is driven by motor or internal combustion engine
Toggle, linear electric motors or hydraulic system drive.
8. method according to claim 1, it is characterised in that the connection side of the compressible hermetic container and oil pipeline
Formula is fixed or movable skid-mounted formula.
9. method according to claim 1, it is characterised in that the compressible hermetic container arrival end is connected with the port of export
It is connected on the oil pipeline of oil well, and there is bypass.
10. method according to claim 1, it is characterised in that the control valve is by machinery and/or electric control.
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| CN104807518B (en) * | 2015-04-24 | 2016-11-30 | 深圳麦开网络技术有限公司 | A kind of measurement apparatus, container and the method for liquid in container volume |
| CN104929614B (en) * | 2015-05-07 | 2017-07-11 | 张睿怡 | Single-well crude oil meter and its metering method applied to oil pumper |
| CN104931110B (en) * | 2015-06-01 | 2018-02-27 | 深圳麦开网络技术有限公司 | Liquid volume measuring device, container and method in a kind of container based on air pressure sensing |
| CN106121625B (en) * | 2016-08-23 | 2023-06-23 | 陕西景行环保科技有限公司 | Gas, oil and water three-phase flowmeter special for pumping unit and flow calculation method |
| CN106950150A (en) * | 2017-03-24 | 2017-07-14 | 孙学军 | Liquid density measurement device and method |
| CN106979906B (en) * | 2017-04-13 | 2024-02-09 | 滨州学院 | Single-well crude oil water content online weighing measurement system and method |
| CN110965986B (en) * | 2019-11-01 | 2023-10-31 | 南京瑞路通达信息技术有限公司 | Measuring device and method for three-phase flow of produced liquid of oilfield production well |
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Denomination of invention: A Direct Measurement Method for Single Well Crude Oil and Gas Production Granted publication date: 20170405 Pledgee: Industrial and Commercial Bank of China Limited Jingzhou Branch Pledgor: JINGZHOU MIND SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2024980003591 |
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