RU2610745C1 - Method of measuring flow rate of oil wells and device for its implementation - Google Patents

Abstract

FIELD: oil industry.

SUBSTANCE: invention relates to equipment used in oil industry and is intended for measuring and registering oil wells products. Method of measuring oil wells flow rate includes a continuous process of separating the oil-water mixture into components and comprises, first, separation of the gas phase from the liquid one by dispersion of the mixture flow and inertial impact on the gas flow, then the liquid phase separation into oil and water by settling in a gravitational field and a repeated measurement cycle including in series: reduction of the gas phase into a common line with simultaneous measurement of its consumption, accumulation of the liquid phase to a specified level and, therefore, shutoff of the gas phase reduction, accumulation of the gas phase to a preset pressure difference of the phase and the medium in the common line and, therefore, reduction of the liquid phase with a portion of a specified value into the common line with simultaneous measurement of its flow rate and opening the gas phase reduction, as well as maintaining pressure of the gas phase within specified limits by its release into the common line and reduction of the gas phase portion additionally supplied from wells with a gas "bubble", regardless of the liquid phase level of accumulation. Herewith determination of oil wells flow rate is performed by alternate filling with liquid taking into account the time of filling and by displacement of the liquid considering the time of displacement, fixed volume of the gas separator specified by means of sensors with fixed gate positions "open" and "closed" and the upper and the lower positions of the float, with successive separate measurement of gas flow rate by a controller as per the gas meter and of liquid flow rate as per the liquid meter or by gas flow rate measurement as per the liquid meter, or by liquid flow rate measurement as per the gas meter. In a device implementing the method on the gas line pressure and temperature sensors are installed connected to a controller, herewith the gas gate on the gas line and the float of the gas separator are interconnected with a lever-spring mechanism able to fix the gas gate position "open" or "closed", herewith the gas gate is equipped with connected to the controller sensors of the position "open" or "closed" of fixed volume of the gas separator of the liquid phase limited with the lower and the upper levels defined by the float positions.

EFFECT: technical result is improvement of quality and efficiency of oil wells flow rate measurement.

2 cl, 2 dwg

Description

The invention relates to equipment used in the oil industry, and is intended for measuring and accounting for the production of oil wells.

A device for measuring the flow rate of wells is known (patent for the Russian Federation No. 2199662, ЕВВ 47/10, May 29, 2001), comprising a gas separator with a float connected to the gas line damper, connected by a liquid line and, through the damper, gas lines with a common line, also including liquid meter, valve with a spring-loaded discrete stem with magnetic locking, valve seat, a washer made of magnetic material, mounted on the stem and located between ring magnets installed in the magnetic circuits, rigidly attached to the housing, interacting with the washer when the rod and its fixing in extreme positions, a choke mounted in the passage section of the valve seat and is rigidly connected to the rod of the latter. The method of preparing and measuring the production rate is that in a constant process of separating the oil-gas mixture from the well, by crushing its flow, the mixture is divided into two phases (separation products): gas and liquid: then, in a constantly repeating measurement cycle, the following operations: the gas phase is discharged into a common line, and the liquid phase is accumulated and separated into components by settling in a gravitational field, and the operation is carried out until the phase reaches a predetermined level, as a result why they block the discharge of the gas phase and accumulate it until a predetermined pressure drop of the gas phase in the gas separator and the medium in the common line is created, and, as a result, then the liquid phase is discharged into the common line, and its flow rate is measured and the gas phase discharge is opened.

The disadvantages of the known method and device are:

- discharge of the liquid phase in the form of an unordered sequence of alternating portions of settled components of an indefinite volume, which does not contribute to high-quality preparation before being served in the fleet;

- measuring the flow rate of only the liquid phase - a mixture of two components: oil and water;

- the lack of a method and means of removing gas released from the solution in the liquid phase when it is supplied by the liquid line from the gas separator to the liquid meter, which significantly reduces the measurement accuracy.

A device for measuring the flow rate of oil wells (ed. Certificate of the USSR No. 1553661, ЕВВ 47/10, 03/30/1990), containing a vertical cylindrical separator with a hydrocyclone, level sensors, pressure and temperature sensors, a gas line with a discrete valve, inlet and outlet liquid lines, soothing grids, lower and upper, and microprocessor. The method of measuring the flow rate includes preparing oil well products for measuring the flow rate and the measurement itself, performed in the specified order: supplying the oil-gas mixture from the oil wells for separation, separating it in the hydrocyclone by inertial action, into the liquid and gas phases, discharging the gas phase into a common reservoir, accumulation of the liquid phase in the measurement cavity and its separation in this case into components by sedimentation in the gravitational field, smoothing out of the pulsations of the velocity field of its disordered movement, calculation of its volume volumetric and mass flow rates and the relative content of oil and water in it, according to their known densities, by measuring the time of filling the volume of the measurement cavity with the liquid phase and measuring the mass of this volume of the liquid phase by hydrostatic weighing of its column, then by filling the volume of the measurement cavity with the liquid phase to the specified level overlap of the discharge of the gas phase and its accumulation with the simultaneous measurement of pressure and temperature and, as a consequence of this, the displacement of the liquid phase into the collecting manifold by the pressure of the gas phase, in percent sse whose calculated production rate of gas phase by the displacement time.

The known method and device have several disadvantages:

- discharge of the liquid phase in the form of an unordered sequence of alternating batches of settled components of an indefinite volume, which does not contribute to its high-quality subsequent preparation before being delivered to the fleet;

- there is no direct measurement of the densities of water, gas and oil, the current values of the values of which are necessary for calculating the flow rate of the components of the well production by the microprocessor;

- the pressure and temperature changes during the displacement process are not taken into account when determining the gas phase flow rate;

- the pressure of the gas phase is not stabilized;

- there are no means to remove the gas released from the solution in the liquid phase when it passes through the outlet liquid line, which may adversely affect the operation of the latter as a siphon;

- the volume of the liquid phase, which additionally entered the separator during the displacement process, is not taken into account when determining the flow rate of the gas phase;

- the potential capabilities of the method, which are manifested as a result of the natural separation of the components of the liquid phase during its accumulation, are not used to measure the density of the components and maintain a stable state of separation of the liquid phase into components when it is fed to a common collector.

A device for differential measurement of oil flow rates (patent of the Russian Federation No. 2406823, ЕВВ 47/10, 09/14/2009) containing a gas separator, a hydrocyclone, a separator with drains and barrier hydraulic locks, discrete valves, volumetric meters, gas-liquid locks, gas line, sensors level, pressure, temperature, microprocessor, and a method for differentially measuring oil well flow rate, comprising supplying products from the wells in the form of an oil-gas mixture to a separator, separating it in a hydrocyclone into a liquid and gas phase PS, dumping the gas phase into a common collector while measuring its pressure and temperature, accumulating the liquid phase, separating it into components by sediment in the gravitational field, smoothing out the pulsations of the velocity field of the disordered movement of the liquid phase, determining its volumetric and mass flow rates, oil and water content in according to their known densities, then at the end of the accumulation of the liquid phase to a predetermined level, overlapping the discharge of the gas phase and accumulating it and, as a result of overlapping, displacing the liquid phase into a common collector, and at the end of its discovery of the discharge of the gas phase and the determination of its flow rate.

The known method and device have the following disadvantages:

- it takes a long time to determine the portion of the flow rate of water, oil and emulsion and each of these components with a large water cut of oil well products for more accurate measurement of portions of components of a certain volume:

- the hydraulic shutter of the device for gas does not work with a large gas factor of oil well production.

A known method of measuring the production rate of oil wells and a device for its implementation (RF patent No. 2541991, ЕВВ 47/10, 02/18/2014). In this method, pure water is extracted from the production of oil wells in the form of an oil-gas mixture by a siphon system by creating a hydraulic shutter for the passage of oil and emulsion. The oils and emulsions that have passed through the hydraulic lock are accumulated by switching and creating a hydraulic lock for the passage of clean water, for subsequent identification by a density meter and measurement by a volumetric flow meter. When accumulated to the appropriate level of fluid create a hydraulic shutter for the passage of gas. Under the action of increasing gas pressure with the opening of the combined flow controller, fluid is squeezed out of the settlers. With a drop in the liquid level in the sumps, the hydraulic shutter is eliminated and the gas begins to pass through the combined flow meter, combined flow regulator. Measure pressure and temperature while dumping it into a common collector. The volumetric flow rate of the components of oil, emulsion, water and gas is measured. Maintain the pressure of the medium in a given range of its values. The parameters of the measurement process and the flow rate of oil wells are calculated and, at the same time, they provide the selection of the cross-section in the hydraulic seal pipelines for the ratio of the flow rates of liquids or gas with the ascent rate of oil bubbles and emulsion in water or gas in liquid. A device in which a gas line comprises a gas flow meter and a gas flow regulator. The gas separator in the lower part is connected to the common collector by a combined flow meter, a combined flow regulator and densitometer through a buffer tank, which is connected to the separation tank by a gas pipeline and a liquid pipeline. The separation tank and the buffer tank connected by a gas pipeline form a direct and opposed siphon, while those connected by a liquid pipeline form an opposed siphon. The buffer tank is connected to a common collector by a measuring line. The separation tank is connected to the main gas line by a gas pipeline, and to the gas separator through a vertical sump, a vertical pipeline and pipelines forming two straight siphons and two opposite siphons. Partitions are installed between the zone of the vertical settler and the vertical pipeline in the gas separator. The microprocessor is connected to a gas flow meter, a gas flow regulator, a combined flow meter, a combined flow regulator and density meter.

The disadvantages of the analogue are:

- the lack of a clear separation of the liquid and gas phases of the measurement, since there is the possibility of passing through the gas meter gas-liquid mixture;

- the presence of errors in a wide range of measurement of the flow rate of the liquid and gas phases of the product in the presence of different flowmeters for liquid and gas.

The closest in technical essence and the achieved result to the claimed one is a method of measuring the production rate of oil wells and a device for its implementation (options) (RF patent No. 2351757, ЕВВ 47/10, 09/05/2007). The device consists of a gas separator with a product sampler and a float connected to a gas line damper communicating the gas separator through volumetric and mass flow meters and a valve with a common line. The gas separator is also in communication with the emergency capacity and is connected to the common line through a gravity separator with a siphon product collector, and through a volumetric and mass flow meters and valve, by a liquid line. The damper is equipped with a bypass, including a compensation tank and a valve. There is a unit for calculating, accounting for production, registration and analysis of measurement results. The valves are made with fixing the extreme positions and with the possibility of opening the passage in excess of face value. The method includes separating the gas phase from the liquid, measuring the flow rate and calculating its density, two-stage separation of the liquid phase: preliminary - in the process of its accumulation and final - by gravitational separation after throttling individual drops of oil into components, taking portions of each component in turn, then duplicated measurement of component costs and calculating their densities. According to the measurements, the production rate of the wells is determined separately for the components and the production is recorded.

The disadvantages of the closest analogue are:

- the use of liquid and gas flow meters of various types, which extends the range of measurement error;

- in the process of measuring the gas flow there is the possibility of passing and metering the gas meter with a gas-liquid droplet mixture;

- lack of calibration of the readings of the flow meters for gas and liquid with each other according to the error of their readings in the mode of their constant operation.

The objective of the invention is to improve the accuracy of measuring the flow rate of oil wells for individual components of their products.

The technical result of the claimed invention is to improve the quality and efficiency of measuring the flow rate of oil wells.

Improving the quality and efficiency of measuring the oil flow rate is ensured by the fact that the gas flow meter readings are confirmed by the liquid flow meter readings, and on the gas line the device is equipped with a gas damper with fixation by open and closed position sensors connected to the controller for separate determination of oil flow rate wells for individual components of their products, and a lever-spring mechanism connecting the gas separator float to the gas damper on the gas line provides ntirovannoe position of the gas valve in the "open" and "closed".

The problem is solved, and the technical result is achieved by the fact that by the method of measuring the flow rate of oil wells, which includes a continuous process of separating the oil-gas mixture into components, by which the gas phase is first separated from the liquid dispersion of the mixture stream and the inertial effect on the gas stream, then the liquid phase is divided into oil and water by the method of sludge in a gravitational field and repeat the measurement cycle, which includes sequentially the discharge of the gas phase into a common line with the simultaneous measurement of its flow rate, the accumulation of phase flow to a predetermined level and, as a result, blocking the discharge of the gas phase, accumulation of the gas phase up to a given pressure drop of its medium in the common line and, as a result, discharge of the liquid phase in a portion of a given value into the common line with simultaneous measurement of its flow rate and opening discharge of the gas phase, as well as maintaining the pressure of the gas phase within the specified limits by dumping it into a common line and dumping a portion of the gas phase, additionally received from the wells with a gas "bubble", regardless of the level of accumulation of the liquid phase, According to the invention, the production rate of oil wells is determined by alternately filling with liquid, taking into account the filling time, and displacing the liquid, taking into account the time of displacement, a fixed volume V _{about the} separator, set by the fixed positions of the open and closed shutter sensors and the upper and lower positions of the float , with the controller separately measuring the gas rate by the gas meter and the liquid rate by the liquid meter, either by measuring the gas rate by the liquid meter, or by measuring the rate liquid gas to the counter, wherein the fluid flow rate determined by the fluid meter readings, referred to the sum of the displacement time and the time of filling a fixed volume V _of the separator:

V _o = Q _{flow rate} ⋅t _{gas displacement} ;

V _o = Q _{flow rate} ⋅t _filling ,

Where:

V _o is the fixed volume of the gas separator;

Q _gas rate - gas rate;

Q _fluid flow rate - fluid flow rate;

t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator;

t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator.

Q _{fluid flow rate} = V _{fluid meter} / (t _filling + t _displacement ),

Where:

V _{fluid meter} - the volume of fluid measured by the meter;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _{o of the} separator;

and the gas flow rate is determined by the readings of the gas meter, related to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator:

Q _{gas flow rate} = V _{gas meter} / (t _filling + t _displacement ),

Where:

V _{liquid meter} - the volume of gas measured by the gas meter;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _{o of the} separator,

either the gas flow rate is determined by the fluid flow rate, taking into account the filling time, related to the time of displacement:

Q _{gas flow rate} = Q _{fluid flow rate} ⋅t _filling / t _displacement ,

Where:

P _{fluid flow rate} - the _fluid flow rate is determined by the readings of the fluid meter, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _o gas separator,

either the fluid flow rate is determined by the gas flow rate, taking into account the displacement time, related to the filling time:

Q _{fluid flow rate} = Q _{gas flow rate} ⋅t _displacement / t _filling ,

Where:

Q _{gas rate} - _gas rate according to the gas meter, referred to the sum of the time of displacement and filling a fixed volume V _o gas separator;

t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator;

t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator.

The problem is solved, and the technical result is also achieved by the fact that the device for measuring the flow rate of oil wells containing a gas separator with a float connected to the gas damper on the gas line, connecting the gas separator with a common line, liquid and gas flow meters, liquid and gas connected to the controller flow regulators mounted on a liquid, also communicating gas separator with a common line, and gas lines with the possibility of fixing them in two extreme positions "open" and "closed", according to According to the invention, pressure and temperature sensors connected to the controller are installed on the gas line, moreover, the gas damper on the gas line and the gas separator float are connected by a lever-spring mechanism that fixes the positions of the gas damper “open” or “closed”, while the gas damper is equipped with sensors connected to the controller open and closed positions of a fixed volume V _{o of a} gas phase separator of the liquid phase, limited by the lower and upper levels determined by the positions of the float.

The essence of the invention is illustrated by drawings. In FIG. 1 shows a diagram of a device with an open gas shutter. In FIG. 2 shows a diagram of a device with a closed gas shutter;

A device for measuring the flow rate of oil wells (hereinafter referred to as the “device”) comprises a gas separator 1 with a float 2 interacting with a gas damper 3 on a gas line 4 connected to a common line 5. On a gas line 4, after a gas damper 3, a gas flow meter 6 is installed in series , a pressure sensor 7, a temperature sensor 8 and a gas flow regulator 9, and a liquid flow meter 11 is installed on the liquid line 10 at the outlet of the gas separator 1 and followed by a liquid flow regulator 12 connected to a common line 5.

Installed on the gas line 4, a gas flow meter 6, a pressure sensor 7, a temperature sensor 8 and a gas flow controller 9, along with an open position sensor 13 and a closed position sensor 14 of the gas shutter 3, as well as a liquid flow meter 11 and a liquid flow regulator 12 on the liquid line 10 are connected to the controller 15, and the gas damper 3 is connected to the float 2 of the gas separator 1 by a lever-spring mechanism 16.

A device for measuring the flow rate of oil wells works as follows: the production of oil wells in the form of an oil and gas mixture is fed to a gas separator 1, in which gas is separated from the liquid and gas from the gas separator 1 as it flows through the open gas damper 3, gas line 4, gas flow meter 6, pressure sensors 7 and temperature 8, gas flow regulator 9 fall into the common line 5.

As the fluid accumulates in the gas separator 1 and the float 2 reaches the maximum liquid level H, the gas shutter 3 takes a “closed” position under the influence of the lever-spring mechanism 16. A pressure differential is created between the gas separator 1 and the common line 5. Moreover, with the achievement of the pressure drop between the gas separator 1 and the common line 5 of the opening value of the liquid flow regulator 12, which opens and begins the movement of liquid from the gas separator 1 through the liquid flow meter 11, the liquid flow regulator 12 to the common line 5 along the liquid line 10. The liquid level in gas separator 1 falls and after the time of displacement (t _displacement ) with reaching the float 2 level h gas damper 3 connected with the float 2, takes the position of "open" under the influence of the lever-spring mechanism 16. In As a result, gas from the gas separator 1 through the gas damper 3, the gas flow meter 6, the pressure sensors 7 and temperature 8, the gas flow regulator 9 enters the common line 5. In this case, the liquid flow regulator 12 is closed and the gas separator 1 is filled with liquid, and the controller 15 starts the countdown filling (t _filling ) with a liquid of a fixed volume V _{o of the} gas separator 1 from the moment of receiving a signal from the sensor 13 "open" open position of the gas damper 3 and ends after filling a fixed volume V _{o of the} gas separator 1 with reaching the maximum level H and receiving a signal from the sensor 14 “closed” the closed position of the gas damper 3, after which the countdown begins for gas displacing the liquid phase of the fixed volume V _o . With the achievement of the minimum level h by the float 2, connected with the lever-spring mechanism 16, the gas shutter 3 will close. With the signal from the position sensor “open” 13, the time of the displacement (t _displacement ) of the liquid phase of the fixed volume of the gas separator 1 ends, the gas enters the total line 5 and the gas separator 1 is filled with liquid.

The liquid phase levels from the marks H and h determine the constant volume V of the measurement created by the positions of the float 2 and, accordingly, the positions of the gas damper 3 “open” - with the position sensor “open” 13 and “closed” - with the position sensor “closed” 14. Lever-spring mechanism 16 provides a guaranteed position of the gas damper 3 in the "open" and "closed" modes.

The time of the filling process (t _filling ) and the time of the displacement process (t _ousting ) of the gas separator 1 are measured by the controller 15 by the operation of the open sensors 13 and the closed sensors 14 of the gas shutter 3, respectively, “open” and “closed”. After the filling time (t _filling ), the liquid level in the gas separator 1 rises to the maximum level N. After which the cycle of the device is repeated. In this case, the fluid flow rate is determined by the readings of the fluid meter, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator:

V _o = Q _{flow rate} ⋅t _{gas displacement} ;

V _o = Q _{flow rate} ⋅t _filling ,

Where:

V _o is the fixed volume of the gas separator;

Q _gas rate - gas rate;

Q _fluid flow rate - fluid flow rate;

t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator;

t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator.

Q _{fluid flow rate} = V _{fluid meter} / (t _fill + t _displacement )

Where:

V _{fluid meter} - the volume of fluid measured by the meter;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _{o of the} separator,

and the gas flow rate is determined by the gas meter readings, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator

Q _{gas flow rate} = V _{gas meter} / (t _filling + t _{displacement)} ),

Where:

V _{liquid meter} - the volume of gas measured by the gas meter;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _{o of the} separator,

or the gas flow rate is determined by the fluid flow rate, taking into account the filling time, referred to the time of displacement.

Q _{gas flow rate} = Q _{fluid flow rate} ⋅V _{gas meter} / (t _filling + t _displacement )

Where:

Q _{fluid flow rate} - the _fluid flow rate is determined by the readings of the fluid meter, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator;

t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator;

t _displacement - time of displacement of the liquid phase of a fixed volume V _o gas separator,

either the fluid flow rate is determined by the gas flow rate, taking into account the displacement time, related to the filling time:

Q _{fluid flow rate} = Q _{gas flow rate} ⋅t _displacement / t _filling

Where:

Q _{gas rate} - _gas rate according to the gas meter, referred to the sum of the time of displacement and filling a fixed volume V _o gas separator;

t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator;

t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator.

Using the invention allows to increase the accuracy and quantity of measuring the flow rate of gas and liquid of oil wells and to create a reliable device with the choice of the optimal measurement method with the selection of the optimal composition of measuring instruments.

The claimed invention provides improved accuracy in measuring the flow rate of oil wells for individual components of their products, as well as improving the quality and efficiency of measuring the flow rate of oil wells.

Claims (32)

1. A method of measuring the flow rate of oil wells, including the continuous process of separating the oil-gas mixture into components, by which the gas phase is first separated from the liquid dispersion of the mixture flow and the inertial effect on the gas stream, then the liquid phase is separated into oil and water by the sedimentation method in a gravitational field and repeated measurement cycle, which includes sequentially the discharge of the gas phase into a common line with the simultaneous measurement of its flow rate, the accumulation of the liquid phase to a predetermined level and, as a consequence, the overlap of the gas discharge phase, the accumulation of the gas phase to a predetermined differential pressure of it and the medium in the common line and, as a result, the discharge of the liquid phase by a portion of a given value into the common line with the simultaneous measurement of its flow rate and the opening of the discharge of the gas phase, as well as maintaining the pressure of the gas phase in the specified limits by dumping it into a common line and dumping a portion of the gas phase, additionally received from wells with a gas "bubble", regardless of the level of accumulation of the liquid phase, characterized in that the production rate of oil wells is determined alternately filling with liquid, taking into account the filling time, and displacing the liquid, taking into account the time of displacement, a fixed volume V _{o of the} gas separator, set, with the help of sensors, the fixed positions of the valve “open” and “closed” and the upper and lower positions of the float, with alternate separate measurement a gas flow rate controller for a gas meter and a liquid flow rate for a liquid meter, either measuring a gas flow rate for a fluid meter, or measuring a fluid flow rate for a gas meter, wherein the fluid flow rate is determined according to the readings of the liquid counter, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator:

;

, Where: V _o is the fixed volume of the gas separator; Q _gas rate - gas rate; Q _fluid flow rate - fluid flow rate; t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator; t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator.

, Where: V _{fluid meter} - the volume of fluid measured by the meter; t _filling - the time of filling the liquid phase of a fixed volume V _o gas separator; t _displacement - the time of displacement of the liquid phase of a fixed volume V _{o of the} gas separator, and the gas flow rate is determined by the gas meter readings, related to the sum of the time of displacement and time of filling a fixed volume V _{o of the} gas separator:

, Where: V _{liquid meter} - the volume of gas measured by the gas meter; t _filling - the time of filling the liquid phase of a fixed volume V _o gas separator; t _displacement - time of displacement of the liquid phase of a fixed volume V _o gas separator, either the gas flow rate is determined by the fluid flow rate, taking into account the filling time, related to the time of displacement:

Where: Q _{fluid flow rate} - the _fluid flow rate is determined by the readings of the fluid meter, referred to the sum of the time of displacement and the time of filling a fixed volume V _{o of the} separator; t _filling - the time of filling the liquid phase of a fixed volume V _{o of the} separator; t _displacement - time of displacement of the liquid phase of a fixed volume V _o gas separator, either the fluid flow rate is determined by the gas flow rate, taking into account the displacement time, related to the filling time:

Where: Q _{gas rate} - _gas rate according to the gas meter, referred to the sum of the time of displacement and filling a fixed volume V _o gas separator; t _displacement - the time of displacement of the liquid phase of a fixed volume V _o gas separator; t _filling - the time of filling with the liquid phase of a fixed volume V _o gas separator. 2. A device for measuring the flow rate of oil wells, containing a gas separator with a float associated with a gas damper on the gas line, communicating the gas separator with a common line, liquid and gas flow meters connected to the controller, liquid and gas flow controllers mounted on a liquid, also communicating gas separator with common line, and gas lines with the possibility of fixing them in two extreme positions "open" or "closed", characterized in that the gas line has pressure and temperature sensors connected connected with the controller, moreover, the gas damper on the gas line and the gas separator float are connected by a lever-spring mechanism with the possibility of fixing the position of the gas damper “open” or “closed”, while the gas damper is equipped with open or closed position sensors connected to the controller the volume of the gas separator of the liquid phase, limited by the lower and upper levels, determined by the positions of the float.

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