CN2480811Y

CN2480811Y - Three-phase flow mixing transfusion measurer

Info

Publication number: CN2480811Y
Application number: CN 01226959
Authority: CN
Inventors: 刘孟禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-12
Filing date: 2001-06-12
Publication date: 2002-03-06
Anticipated expiration: 2011-06-12

Abstract

The utility model relates to a three-phase flow hybrid metering mechanism of which is characterized in that one end of the flow counter is connected with a delivery conduit, the other end is connected with an annular conduit which is connected with a spiral pipe via a flange and a concentric reducer, the outer edge of the spiral pipe is welded with a branch pipe which is communicated with the spiral pipe, two capillary tubes which are connected with a differential pressure cell are arranged on the vertical direction of the annular conduit and the branch pipe separately. The complete mechanism is connected with the delivery conduit in series. The utility model has the advantages of simple structure, small volume, less accommodation area, which is capable of saving the investment of the oil field construction greatly, and further the utility model is convenient to operate, capable of measuring the output of the oil, gas and water of oil wells at any moment without hand sampling.

Description

A kind of three-phase flow mixing transfusion measuring apparatus

The utility model belongs to the metrology and measurement device, or rather, is a kind of three-phase flow mixing transfusion measuring apparatus.

The production of oil well is oil, gas, water three-phase mixture, and three's metering is the master data of this oil well, also is the basic foundation of formulating oilfield development program.The metering method of the oil of oil well, gas, water in the past: first usefulness gas, liquid/gas separator carry out gas, liquid separates, and measure gas, flow quantity respectively, manually adopt the liquid sample then, standing separation, obtain oil and water volume ratio in the liquid, again the liquid measure of every day of measuring is manually calculated, obtain the output of oil, water.Because the component of the oil of oil well output, gas, water is earthquake, and artificial sample every day for once or twice, therefore produces bigger error.

There is a kind of method of measuring the density of mixed flow thing with radio isotope technique to measure oil well oil, the water yield now.The principle of this method is: ray passes the material of different densities, its damping capacity difference, thus provide the material density value according to the different damping capacity that records.The shortcoming of the method is: demarcate difficulty, demarcate the oil, gas, the water mixed liquid that need the configuration different densities, workload is big, and precision is difficult to be higher than per mille, and the timing signal pipe is clean in addition, and during actual the use, tube wall has wax deposition, sand setting, makes the measurement misalignment; In addition, radioactive isotope is harmful, and normal the use is safe, but under the rugged environment of oil field, the difference of operator quality as producing faulty operation, will cause danger in addition.

The purpose of this utility model is the shortcoming that overcomes prior art, propose a kind of simple in structure, safe and reliable, demarcate calibration convenient, without artificial sample, oil, gas, the measuring apparatus of aquatic products amount of automatic gauge oil well in real time.

The utility model structure: be used to measure the end serial connection conveyance conduit of the flowmeter of oil, gas, aqueous mixtures total flow, its other end links to each other with back-shaped pipe; The other end of back-shaped pipe is connected with the spiral pipe that gas, liquid are separated, on the outer of spiral pipe, be welded with the arm that flows through oil, aqueous mixtures that communicates with it, on the vertical direction of back-shaped pipe and arm, two groups of capillary modules that are connected with differential pressure transmitter be housed respectively; Temperature sensor and the pressure transducer of measuring temperature and pressure are housed on back-shaped pipe.The connection of described each parts is selected flange, screw thread or is welded arbitrary mode, can select according to structure, caliber needs.

Major advantage of the present utility model:

The utility model device is actual to be made up of centrifuging, total flow measurement and density measure three parts, all parts are except that back-shaped pipe, spiral pipe, arm, complete is standard component and outsourcing piece, therefore simple in structure, make easily, volume is little, and floor area is few, can reduce the oilfield construction investment greatly.

It is very convenient that the utility model is measured oil well oil, gas, aquatic products amount, its cardinal principle: the spiral pipe of device is by the centrifuging principle design, actual is a centrifugal separator, like this, the material of arm of flowing through is oil, the aqueous mixtures of the no gas after separating, by measuring pressure reduction, can (in the formula: ρ be a density, and H is the vertical range of pressure measurement between not good enough by formula ρ=Δ P/Hg; Δ ρ is a pressure differential, g is an acceleration of gravity) calculate density value, the density that the density of oil, gas, aqueous mixtures and oil, aqueous mixtures have been arranged, the density of known in addition oil, gas, water and the oil of actual measurement, gas, water total flow, just can obtain oil, gas, water flow separately, all calculate and finish, need not artificial calculating by computing machine.The measuring accuracy of this device reaches the requirement of SYJ4-84 " the oilfield collection is failed design specifications " fully.

Further specify the characteristics of the utility model structure below in conjunction with accompanying drawing.

Fig. 1 is the utility model structure front elevation.

Fig. 2 is the vertical view of Fig. 1.

By illustrated in figures 1 and 2, the utility model is mainly by flowmeter 2, back-shaped pipe 3, temperature sensor 4, pressure transducer 5, concentric reducer 6, arm 7, spiral pipe 8, A-B on the back-shaped pipe, E-F on C-D impulse point and the spiral pipe, four groups of kapillaries that the impulse point of J-K is provided with and be attached thereto the differential pressure transmitter (not marking) that connects and constitute, wherein be used for measuring oil, gas, one end of the flowmeter 2 of aqueous mixtures flow is connected with conveyance conduit 1 by flange, the other end of flowmeter 2 is with flange and flow through oil, gas, the back-shaped pipe 3 of aqueous mixtures is connected, impulse point A-B on back-shaped pipe 3 vertical direction, two groups of kapillaries that are connected with differential pressure transmitter are housed on the C-D, in back-shaped pipe 3 horizontal directions mounting temperature sensor 4 successively, pressure transducer 5 and the concentric reducer 6 that connects with flange, the other end of concentric reducer 6 connects spiral pipe 8 with flange.On spiral pipe 8 outers, be welded with the arm that flows through oil, aqueous mixtures 7 that communicates with it, four impulse point E-F, J-K in the vertical direction of arm 7 are equipped with two groups of kapillaries that link to each other with differential pressure transmitter, are connected with conveyance conduit 1 by concentric reducer 6, flange in the exit of spiral pipe 8.

The number of turns of described spiral pipe is a single-turn or multi-turn, can determine by known centrifuging principle design.

Described back-shaped pipe 3 is that oil, gas, aqueous mixtures flow into wherein, kapillary by impulse point A-B, C-D setting on it, to flow to differential pressure transmitter at a distance of the pressure differential of H1, H2, differential pressure transmitter is passed to computing machine with pressure signal, can obtain the differential static pressure of vertical range (H1+H2), by formula ρ=Δ P/ (H1+H2) g, obtain the density of oil, aqueous mixtures again.

Described arm 7 flows into oil, the aqueous mixtures that spiral pipe 8 centrifugings go out, and the kapillary by impulse point E-F, J-K on it are provided with will flow to differential pressure transmitter at a distance of the pressure differential of H3, H4, and computing method are the same, obtain the density of oil, aqueous mixtures.With total flow and the density and the given density of actual measurement, can calculate oil, gas, water flow separately, according to the temperature and pressure of actual measurement, the flow rate conversion that calculates is become numerical value under the standard state again.The measured data of whole flows, pressure differential, pressure, temperature by computer acquisition and processing, is given the output of producing well oil, gas, water at last.

Claims

1. three-phase flow mixing transfusion measuring apparatus, it is characterized in that primary structure is: measure oil, gas, one end of the flowmeter of aqueous mixtures total flow links to each other with conveyance conduit, its other end links to each other with back-shaped pipe, back-shaped pipe is provided with temperature sensor, pressure transducer, the other end of back-shaped pipe links to each other with spiral pipe by concentric reducer, on the outer of spiral pipe, be welded with the oil that flows through that communicates with it, the arm of aqueous mixtures, two groups of kapillaries that link to each other with differential pressure transmitter are housed respectively on the vertical direction of arm and back-shaped pipe, are connected with conveyance conduit by flange in the exit of spiral pipe.

2. according to the described measuring apparatus of claim 1, it is characterized in that described spiral pipe is a single-turn or multi-turn.

3. according to the described measuring apparatus of claim 1, it is characterized in that the connection of each parts is selected flange, screw thread or weld arbitrary mode by pipeline to connect.