CN2771478Y - Fully-automatic weighing gas-liquid two-phase oil well metering device - Google Patents

Abstract

The utility model relates to a fully automatic weighing type metering device for a gas-liquid two-phase oil well. The utility model comprises a metering tank and a controlling circuit, wherein the metering tank comprises a tank body, a gas-liquid mixture outlet of a single well, a gas-liquid separator, a collecting hopper, a skip hopper, a weighing sensor, a liquid outlet of the single well, a gas-liquid mixture outlet of a multi-well, a heater, a multiple-way valve, a multiple-path oil well connector, a spline shaft, a photoelectric encoder, a single-phase asynchronous motor, a gas separation umbrella, a gas outlet of the single well, a gas flow meter and a float valve, and the controlling circuit comprises a single-phase asynchronous motor and a programmable controller PLC. The single-phase asynchronous motor is connected with the PLC. The PLC controls the electric motor to start and stop, and the single way of the multiple-way valve is conducted. The selected gas-liquid mixture of the single well is sent to the gas-liquid mixture outlet of a single well on the top of the tank body through a pipeline, and is weighed through the skip hopper after entering the gas-liquid separator, and then the liquid yield amount of the oil well is metered. The gas-liquid mixture of the single well sends the contained gas into the gas flow meter through the gas separation umbrella arranged on the top of the metering tank, and thus the gas yield mount of the oil well is metered.

Description

Full automatic weighing type gas liquid diphase oil well metering device

Technical field

The utility model belongs to the oil well metering device, particularly the multichannel oil well select well automatically, and carry out the metering of individual well gas-liquid output.

Background technology

Known a kind of Weighing type oil well measurement device, gas-liquid separator vertically is housed below the oil-in in its measuring tank, with the gas-liquid separator correspondence position hopper is housed, two tipping buckets are housed below the hopper, tipping bucket is contained in the rotating shaft, be provided with LOAD CELLS below the tipping bucket, by two tipping buckets upset mode real-time online metering oil well output of weighing in turn.The shortcoming of this batchmeter be during for the metering of a certain well yield in the multichannel oil well by manually selecting well, and gas contained in the oil is not measured.

The utility model content

At the deficiencies in the prior art, the utility model provides a kind of full automatic weighing type gas liquid diphase oil well metering device, promptly at the measuring tank side lower part multiple-way valve is installed, and each road binders gas well gas liquid mixture enters the oil well interface simultaneously by multiple-way valve.Import oily pound sign by computer, the control monophase machine opens, stops, and monophase machine drives the spool rotation, and photoelectric encoder is installed in the multiple-way valve as position probing, realizes the conducting of multiple-way valve single channel, thus realize well yield select the well metering automatically.At the measuring tank top gas is installed and is separated umbrella, be used for deriving gas so that carry out the metering of gas production.The automatic control of liquid adjuster is equipped with in the measuring tank bottom, is higher than the outlet of individual well gas liquid mixture to guarantee liquid level, and realization individual well production fluid amount and gas production are measured simultaneously.

The utility model metering device comprises measuring tank and control circuit, wherein measuring tank comprises tank body, the outlet of individual well gas liquid mixture, gas-liquid separator, aggregate bin, tipping bucket, LOAD CELLS, individual well liquid outlet, the outlet of many gas well gas liquid mixture, heater, with multiple-way valve, multichannel oil well interface, splined shaft, photoelectric encoder and monopole asynchronous motor, and gas separates umbrella, individual well gas vent, gas flowmeter and float-controlled valve.The tank body internal upper part is provided with the outlet of individual well gas liquid mixture, be provided with gas-liquid separator below the outlet of individual well gas liquid mixture, be provided with aggregate bin below the gas-liquid separator, the exit of aggregate bin is provided with the tipping bucket of two symmetries, tipping bucket is fixed together by turning cylinder, and the moving axis that can rotate is done upset, and the tipping bucket bottom is provided with LOAD CELLS, and gas-liquid separator, aggregate bin and tipping bucket all are fixed in the tank body by support; The tank body top has the individual well gas vent, and individual well gas vent end is provided with gas flowmeter, and the front of individual well gas vent is provided with gas and separates umbrella, and this gas separates umbrella and is fixed in the tank body by support; Below tank body one side, be provided with the outlet of individual well liquid outlet and many gas well gas liquid mixture, the other end of many gas well gas liquid mixture outlet directly is connected with multiple-way valve, heater is fixed on tank base by support, simultaneously on the individual well liquid outlet, float-controlled valve is installed, at the bottom of the float end of float-controlled valve floats over jar on the liquid, the valve end is installed in the individual well liquid outlet, is higher than the individual well liquid outlet to guarantee liquid level, and realization individual well production fluid amount and gas production are measured simultaneously; Multiple-way valve is welded on the opposite side of tank body after by bolt, and multiple-way valve is provided with multichannel oil well interface, is provided with photoelectric encoder in the multiple-way valve.Control circuit comprises monopole asynchronous motor, programmable logic controller PLC, and monopole asynchronous motor is connected with multiple-way valve by splined shaft, and monopole asynchronous motor control circuit and PLC link, and utilizes PLC to control the motor start and stop and makes the conducting of multiple-way valve single channel.

The utility model adopts the ancillary relief algorithm to be called for short the G method and liquid is weighed the current liquid measure G that connects of tipping bucket _tWith residual spray mixture G last time _T-1, the two subtracts each other and obtains a production fluid discharge curve relevant with the time, by can obtain accumulative total production fluid amount to this curvilinear integral computing $G^{\′}={\∫}_{t_0}^t(G_t-G_{t-1})\mathrm{dt},$ t ₀For measuring the initial moment.If f _MaxBe system's maximum machine frequency, V is the tipping bucket volume, G _tBe the liquid weight in a certain moment, tipping bucket is completely measured upsetting ratio k and is: k=G _tf _Max/ (24 * 3600V), then the G of the current production fluid amount of oil well is: G=kG '.

The individual well gas liquid mixture that selected individual well gas liquid mixture is delivered to the tank body top by pipeline exports, and enters gas-liquid separator then and also weighs through tipping bucket, calculates the production fluid amount of this mouthful oil well.The gas liquid mixture of all the other oil wells directly enters the outlet of many gas well gas liquid mixture through the pipeline outflow of tank base.The individual well gas liquid mixture is sent the gas that it contains into gas flowmeter by the gas separation umbrella at measuring tank top, calculates the gas production of this mouthful oil well.

The utility model metering device passes through multiple-way valve, utilize the start and stop of microcomputer controlled electro machine to make the conducting of multiple-way valve single channel, realize the automatic switchover of well yield metering, solved the problem of manually selecting well, gas is installed at the measuring tank top simultaneously separates umbrella, solved the problem of metering gas yield.

Description of drawings

Fig. 1 is the measuring tank structure principle chart of the utility model device;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is the B-B direction sectional view of Fig. 1;

Fig. 4 is the tipping bucket structure principle chart of the utility model device;

Fig. 5 is the flow chart of weighing of the utility model device;

Fig. 6 is the control circuit schematic diagram of the utility model device;

Fig. 7 selects well control system flow chart for the utility model device;

1 monopole asynchronous motor wherein, 2 splined shafts, 3 multiple-way valves, 4 multichannel oil well interfaces, 5 tipping buckets, the outlet of 6 individual well gas liquid mixtures, 7 gas flowmeters, 8 individual well gas vents, 9 gases separate umbrella, 10 tank bodies, 11 gas-liquid separators, 12 aggregate bins, 13 LOAD CELLSs, 14,15,16 float-controlled valves, 17 individual well liquid outlets, the liquid mixture of gas well gas more than 18 outlet, 19 heaters, liquid at the bottom of 20 jars, 21 bolts, 22 photoelectric encoders, 23 microcomputers (input pound sign).

The specific embodiment

As Figure 1-3, the utility model metering device comprises measuring tank and control circuit, wherein measuring tank comprises tank body 10, individual well gas liquid mixture outlet 6, gas-liquid separator 11, aggregate bin 12, tipping bucket 5, LOAD CELLS 13, individual well liquid outlet 17, many gas well gas liquid mixture outlet 18, heater 19, with multiple-way valve 3, multichannel oil well interface 4, splined shaft 2, photoelectric encoder 22 and monopole asynchronous motor 1, and gas separates umbrella 9, individual well gas vent 8, gas flowmeter 7 and float-controlled valve 14-15.Tank body 10 internal upper parts are provided with individual well gas liquid mixture outlet 6, be provided with gas-liquid separator 11 below the individual well gas liquid mixture outlet 6, be provided with aggregate bin 12 below the gas-liquid separator 11, the exit of aggregate bin 12 is provided with the tipping bucket 5 of two symmetries, tipping bucket 5 is fixed together by turning cylinder, and the moving axis that can rotate is done upset, tipping bucket 5 bottoms are provided with LOAD CELLS 13, wherein LOAD CELLS can adopt the DBZ-2C type, and gas-liquid separator 11, aggregate bin 12 and tipping bucket 5 all are fixed in the tank body by support; Tank body 10 tops have individual well gas vent 8, and individual well gas vent 8 ends are provided with gas flowmeter 7, and the front of individual well gas vent 8 is provided with gas and separates umbrella 9, and this gas separates umbrella 9 and is fixed in the tank body by support; Below tank body 7 one sides, be provided with individual well liquid outlet 17 and many gas well gas liquid mixture outlet 18, the other end of many gas well gas liquid mixture outlet 18 directly is connected with multiple-way valve 3, heater 19 is fixed on tank body 7 bottoms by support, float-controlled valve 14 is installed on individual well liquid outlet 17 simultaneously, at the bottom of the float end 15 of float-controlled valve floats over jar on the liquid 20, valve end 16 is installed in individual well liquid outlet 17 places, to guarantee that liquid level is higher than individual well liquid outlet 17, realization individual well production fluid amount and gas production are measured simultaneously; Be welded on the opposite side of tank body 7 after multiple-way valve 3 is fixed by bolt 21, multiple-way valve 3 is provided with multichannel oil well interface 4, is provided with photoelectric encoder 22 in the multiple-way valve 3.Control circuit comprises monopole asynchronous motor, programmable logic controller PLC, wherein monopole asynchronous motor can adopt the 90YYJ90-3 type, programmable logic controller PLC can select Siemens S7-200 type, monopole asynchronous motor is connected with multiple-way valve by splined shaft, monopole asynchronous motor control circuit and PLC link, and utilize PLC to control the motor start and stop and make the conducting of multiple-way valve single channel.

Each casinghead gas liquid mixture enters tank body from multiple-way valve, and the individual well gas liquid mixture that is measured upwards enters tipping bucket and measures through gas-liquid separator, aggregate bin through multiple-way valve, and the casinghead gas liquid mixture that need not measure closed conduit in jar directly flows out tank body.Gas in the oil upwards flows out through gas separation umbrella after gas-liquid separator separates and measures with gas flowmeter simultaneously.The production fluid of individual well is provided with independent individual well outlet, and the gas liquid mixture of all the other oil wells is directly walked header outlet through closed conduit by multiple-way valve in tank body, can avoid the aerogenesis of individual well and mixing of all the other oil well aerogenesis like this.Put a float controller with the control liquid level on the liquid level of measuring tank bottom.The effect of float-controlled valve is that the control liquid level is higher than the individual well liquid outlet all the time, avoids gas to discharge from the bottom.Gas flow is taken into account the outlet that control pressurer system is contained in gas, metering when having realized individual well production fluid amount, gas production.

The utility model adopts special tipping bucket design.For under motorless situation, finish the tipping bucket charge of oil, weigh, the automated procedure of emptying, adopt the upset metering in turn of two tipping buckets.The structural principle of tipping bucket as shown in Figure 4.The tipping bucket structure of the utility model design can be convenient to the discharge of oil plant, and fulcrum A is positioned at centre position, two tipping bucket bottoms, and B, C are respectively the position of centre of gravity of two tipping buckets.Because fulcrum A is in the bottom of two tipping bucket centers of gravity, therefore about two tipping buckets be positioned at never on the same horizontal plane, thereby they will admit the oil plant from aggregate bin in turn.When satisfying m ₂G * l ₂＞m ₁G * l ₁Tipping bucket upset, wherein m during condition ₁Be the quality of tipping bucket 1 and institute's holding liquid thereof, m ₂Be the quality of tipping bucket 2 and institute's holding liquid thereof, l ₁Be the vertical distance of fulcrum A to the center of gravity B place vertical line of tipping bucket 1, l ₂Be the vertical distance of fulcrum A to the center of gravity C place vertical line of tipping bucket 2.

The utility model adopts the ancillary relief algorithm to be called for short the G method liquid is weighed, and it weighs flow process as shown in Figure 5.Because viscosity of thickened oil is big, residual spray mixture alters a great deal, and therefore weighing is a dynamic process.What detection obtained through LOAD CELLS is a time dependent curve of weight.If there is not residual liquid, by can obtain accumulative total production fluid amount to this curvilinear integral computing.If residual liquid is arranged, can not directly obtain accumulative total production fluid amount by integral operation.It will be subjected to residual spray mixture what and completely measure the influence of upsetting ratio.

The G method mainly solves the correction problem of residual oil mass, and based on lever principle, in the moment of upset, LOAD CELLS imports the weight signal of upset into computer, according to this numerical value and tipping bucket roll over condition, has both known the current liquid measure G that connects of tipping bucket _tWith residual spray mixture G last time _T-1, the two subtracts each other and obtains a production fluid discharge curve relevant with the time, by can obtain accumulative total production fluid amount to this curvilinear integral computing $G^{\text{'}}={\∫}_{t_0}^t(G_t-G_{t-1})\mathrm{dt},$ t ₀For measuring the initial moment.

Owing to be subjected to the influence of temperature and oil viscosity, therefore residual oil mass needs G ' is revised in continuous variation.If f _MaxBe system's maximum machine frequency, V is the tipping bucket volume, G _tBe the current liquid measure that connects, tipping bucket is completely measured upsetting ratio k and is: k=G _tf _Max/ (24 * 3600V), then the G of the current production fluid amount of oil well is: G=kG '.

The utility model control circuit schematic diagram as shown in Figure 6, L, N and 220V AC power are joined, wherein N is a zero line.SA is a power on switch, and the two ends of relay coil KM11 join with the output of zero line and PLC respectively.When PLC output high level, KM11 gets electric, its corresponding contact KM1 closure, monopole asynchronous motor rotation; During output low level, the KM11 dead electricity, its corresponding contact KM1 disconnects, and motor stops.By computer input pound sign, motor rotation expression is selecting well, motor to stop to represent to have chosen according to the pound sign of input the oil well of desire metering.

Of the present utility modelly select well control system flow process as shown in Figure 7, oily pound sign i by the metering of microcomputer input desire, read in the position signalling j that photoelectric encoder returns then, judge whether i equates with j, judge that promptly multiple-way valve selects the current present position of well, if equate, illustrate that the current present position of multiple-way valve is exactly the oil well of desire metering, motor needn't rotate; If do not wait, illustrate that the current present position of multiple-way valve is not the oil well of desire metering, PLC needs output signal that relay coil is got, relay corresponding contacts closure, the position signalling j that photoelectric encoder returns is read in the motor rotation simultaneously, judge whether i equates with j, if equate, illustrate that the current present position of multiple-way valve is exactly the oil well of desire metering, motor stops the rotation.

Claims (3)

1, a kind of full automatic weighing type gas liquid diphase oil well metering device, it is characterized in that this device comprises measuring tank and control circuit, wherein measuring tank comprises tank body, the outlet of individual well gas liquid mixture, gas-liquid separator, aggregate bin, tipping bucket, LOAD CELLS, individual well liquid outlet, the outlet of many gas well gas liquid mixture, heater, with multiple-way valve, multichannel oil well interface, splined shaft, photoelectric encoder and monopole asynchronous motor, and gas separates umbrella, individual well gas vent, gas flowmeter and float-controlled valve; The tank body internal upper part is provided with the outlet of individual well gas liquid mixture, be provided with gas-liquid separator below the outlet of individual well gas liquid mixture, be provided with aggregate bin below the gas-liquid separator, the exit of aggregate bin is provided with the tipping bucket of two symmetries, tipping bucket is fixed together by turning cylinder, the tipping bucket bottom is provided with LOAD CELLS, and gas-liquid separator, aggregate bin and tipping bucket all are fixed in the tank body by support; The tank body top has the individual well gas vent, and individual well gas vent end is provided with gas flowmeter, and the front of individual well gas vent is provided with gas and separates umbrella, and this gas separates umbrella and is fixed in the tank body by support; Below tank body one side, be provided with the outlet of individual well liquid outlet and many gas well gas liquid mixture, the other end of many gas well gas liquid mixture outlet directly is connected with multiple-way valve, heater is fixed on tank base by support, simultaneously on the individual well liquid outlet, float-controlled valve is installed, on the liquid, the valve end was installed in the individual well liquid outlet at the bottom of the float end of float-controlled valve floated over jar; Multiple-way valve is welded on the opposite side of tank body after by bolt, and multiple-way valve is provided with multichannel oil well interface, is provided with photoelectric encoder in the multiple-way valve; Control circuit comprises monopole asynchronous motor, programmable logic controller PLC, and monopole asynchronous motor is connected with multiple-way valve by splined shaft, and monopole asynchronous motor control circuit and PLC link, and utilizes PLC to control the motor start and stop and makes the conducting of multiple-way valve single channel.

2, the described a kind of full automatic weighing type oil well metering device of claim 1 is characterized in that the tipping bucket of described two symmetries, when satisfying m ₂G * l ₂＞m ₁G * l ₁During condition, tipping bucket upset, wherein m ₁Be the quality of tipping bucket 1 and institute's holding liquid thereof, m ₂Be the quality of tipping bucket 2 and institute's holding liquid thereof, l ₁Be the vertical distance of fulcrum A to the center of gravity B place vertical line of tipping bucket 1, l ₂Be the vertical distance of fulcrum A to the center of gravity C place vertical line of tipping bucket 2.

3, a kind of full automatic weighing type oil well metering device as claimed in claim 1 is characterized in that this metering device adopts the ancillary relief algorithm that liquid is weighed, and design formulas is G=kG ', G is the current production fluid amount of oil well, G ' is accumulative total production fluid amount, and k is that tipping bucket is completely measured upsetting ratio, wherein $G^{\′}={\∫}_{t_0}^t(G_t-G_{t-1})\mathrm{dt},$ G _tBe the current liquid measure that connects of tipping bucket, G _T-1Be residual spray mixture last time, t ₀For measuring the initial moment; K=G _tf _Max/ (24 * 3600V), f _MaxBe system's maximum machine frequency, V is the tipping bucket volume.

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