RU2365750C1 - Method for measurements of debits, monitoring and control of oil well production technology and installation for its realisation - Google Patents

Abstract

FIELD: oil and gas production.

SUBSTANCE: group of inventions is related to oil and gas industry, in particular, to devices for measurement, calculation of flow rates, mass, volume of liquid, oil, water and gas, and also for control of composition of oil and gas wells produce. Installation for measurement of debits, monitoring and control of oil wells production technology includes reservoir-separator equipped with hatch and flanges. On pipe fittings devices are provided for measurement of medium parametres in the form of thermometer and manometer, and also devices for measurement of mass, level and volume. Besides, reservoir-separator is equipped with device of liquid level indicators with measuring rods. Reservoir-separator is oriented strictly horizontally, for this purpose it is located on at least two location supports with loading cantilevers and mass metres. Piping comprises inlet vertical pipeline, common pipeline header, drain pipeline, gas pipeline. Periodically produce in the form of gas-liquid mixture is supplied into measuring reservoir-separator, gas-liquid mixture is separated by gas. Mass of gas-liquid mixture is measured at metering levels in process of gas-liquid mixture separation by gas after creation of distinct border of gas-liquid interface. Temperature, pressure, gas debit, mass, level, interface and liquid volume are measured in process of pouring. Average liquid density is measured or calculated and compared to actual density produced by calculation method by analysis of product samples at the inlet before and after measurements and in process of measurements, as specified value of difference is achieved between readings of average and real densities below specified error. Using calculated average density of liquid and average densities of oil, gas and water obtained by analysis of liquid samples at the inlet to reservoir-separator, debit of liquid, water, oil and gas is calculated.

EFFECT: higher accuracy and validity of measurements, expansion of functional resources.

14 cl, 3 dwg, 2 ex

Description

The invention relates to the oil and gas industry and can be used to measure the flow rate of products, their components - oil, water and gas, to control the composition of products, as well as to control and manage the technology of production of wells in the processes of production, transportation, storage and sale of oil and other industries.

In the oil industry, it is difficult to achieve accurate and reliable measurements of well production rates by liquid, oil, gas and water, which is especially characteristic when introducing new methods of stimulating oil production in which persistent emulsions gas-oil, gas-oil-water, water-oil , for example, in the extraction of heavy oil with abnormal properties.

From the technical level there is a known method for determining the flow rate of liquid and gas in well production, including the separation of the gas-liquid mixture in the separation tank, setting the time for measuring the flow rate, periodic accumulation of liquid in the separation tank and its displacement under pressure, measuring the periods of accumulation and displacement.

To increase the accuracy and reliability of determining the flow rates during the accumulation period, the pressure is maintained lower than the saturation pressure and the gas volume and liquid mass are continuously measured until its predetermined maximum value is reached, and the liquid mass values for each subsequent period are compared with each other and the measurement is completed at the minimum specified difference value, and the flow rate of liquid and gas is determined taking into account changes in the mass of liquid and the time of accumulation and displacement for periods of accumulation and displacement [A.S. 1680966, BI No. 36, publ. l 09/30/91]. For the implementation of this method, there is also known an installation for collecting, measuring oil well production, comprising a container connected by pipelines to valves with nozzles for introducing a gas-liquid mixture, gas and liquid outlet, density, pressure, gas volume meters, and also a computing device. To increase the accuracy of measurements, expand operational capabilities, the tank is installed horizontally on the mass meters, equipped with level sensors placed on the wall of the tank at a level of 0.2-0.8 of its height, sampling devices installed outside the tank on height-adjustable supports and connected to pipelines through valves, and a lifting platform is installed on the upper surface of the tank in a plane passing through its center of gravity, and the nozzles for introducing a gas-liquid mixture and for discharging gas and liquid mounted vertically and made in the cylindrical part of the tank, the nozzle of the gas-liquid mixture inlet is connected to the outlet lines of the wells, the nozzle of the liquid outlet through the densitometer and the valve is connected to the manifold, the gas inlet port is connected to the gas pipeline, and a filter drop eliminator is installed on its flexible section, supported through the meter mass on the capacity, while the control valve inputs and outputs of all meters are connected respectively to the inputs and outputs of the measuring devices [A.S. 1652521, BI No. 20, publ. 05/30/1991].

The disadvantage of this method and its implementing device is the low accuracy of gas measurements, because do not take into account the residual gas in the foamy oil and emulsion, as well as the water content of the products before and during the separation process.

Also known installation of operational accounting of oil [Patent RU 2208158, BI No. 19, publ. July 10, 2003], in which the maximum separation of gas from a liquid by a hydrocyclone was applied to ensure the accuracy of its measurement by mass meters. The disadvantage of the analogue is that it provides for deep gas separation from the liquid phase by a hydrocyclone, which is difficult to carry out in collection systems in the presence of free and dissolved gas. This requires the preparation of liquid products for measurements, namely heating, degassing, and to increase accuracy, it is necessary to have backpressure, which is not enough in collection systems. In addition, in the analogue, the flow rate measurement is carried out during discharge and is not controlled during the loading and separation period.

There is also a method of measuring the flow rate of oil wells in liquid and a device for its implementation [Patent RU 2277635]. A method for measuring oil flow rates of oil wells, mainly for gas-oil mixtures prone to foaming, includes periodically supplying a gas-liquid mixture to the measuring tank, separating the gas-liquid mixture by gas, counting the time it takes for the gas-liquid mixture to reach the measuring levels of the said capacity and measuring the hydrostatic pressure of the gas-liquid mixture on the said measuring levels. The gas-liquid mixture is separated by gas until a pronounced liquid-foam interface is formed, after which a gas-liquid mixture is supplied to the measuring section of the measuring container, the speed of movement of the foam-gas interface and the speed of movement of the liquid-foam interface are determined separately from the characteristic times of reaching the said boundaries at least two measuring levels of the measuring capacity, and the flow rate of an oil well in liquid in units of mass flow rate is determined taking into account the mass of the liquid spine located in the foam.

Common disadvantages of the known methods and devices are the low sensitivity and accuracy of the method for measuring the hydrostatic pressure of complex foam and emulsion oil and gas mixtures of products in batch-group metering systems, the need for separation, in which it is possible to determine a clear interface. The device is a single-function measuring installation, the method does not provide for measuring the current flow rate to control the process of lifting and collecting products, but measures a portion of the product. To obtain a satisfactory accuracy in the measurement of flow rates, it is necessary to conduct complex studies and configure instruments and processing algorithms. The device requires tuning and calibration for certain parameters of the well production. The device uses block horizontal-vertical separators, the horizontal part is a gas separator, and the vertical part is a measuring separator, the dimensions of which are small for accurate measurement of well production by the hydrostatic method.

Thus, in analogs, the problem of composition control is partially solved by determining the interface by weight and hydrostatic methods when filling and calculating the determination of individual product components with the constant use of sample analysis results to determine oil, gas and water, which does not provide operational process control .

In this regard, at the known technical level, the closest analogue has not been selected both in terms of the set of essential features and in the achieved technical results.

The objective of the invention is to develop a multifunctional method that extends the range of measurements of flow rates of liquids or gas liquids from gas condensates to viscous oil, monitoring and controlling the production of wells.

Technical results that can be obtained by implementing the invention are:

- improving the accuracy and reliability of measuring the level, volume and mass of a liquid or gas-liquid;

- expansion of functionality;

- providing control and management of production technology for wells;

- control of the reliability of the measurement results of the mass, level / volume of products under operating conditions;

- improving the reliability, safety and usability of the measurement

flow rates of gas-liquid products.

The solution of this problem and the achievement of the above results for the invention became possible due to the fact that:

- a method for measuring flow rates, monitoring and controlling the technology for producing oil well products, preferably for gas-oil mixtures with anomalous properties, is characterized by periodically supplying products in the form of a gas-liquid mixture to the measuring container-separator, separating the gas-liquid mixture by gas, counting the time the gas-liquid mixture reaches the measuring tank levels - a separator and measuring the mass of the gas-liquid mixture at measuring levels during the separation of the gas-liquid mixture by gas after the formation of a pronounced gas-liquid interface, while continuous measurement of the mass of the gas-liquid mixture is carried out during loading and during sludge and separation, the temperature, pressure, flow rate of gas, mass, level, phase separation and volume of the liquid during loading are measured at certain intervals time, followed by fixing, saving and comparing changes with each other, after the gas-liquid mixture is stopped, the parameters of the medium are controlled by measuring temperature, pressure, mass, phase separation , the gas flow rate and the volume of the liquid during the sludge period according to the average liquid density, and the quality of gas-liquid separation is estimated by measuring or calculating the average liquid density and comparing the results with the actual density of the liquid product obtained by calculating the analysis of the combined sample of the product at the inlet before measurements and during measurements, and when the specified value of the difference between the readings of the average and real density is less than the specified error, the degassing is completed, the mass flow rate is measured and the volume of liquid products and determining flow rates of gas, liquid, oil and water;

- the installation for measuring flow rates, monitoring and controlling the technology for producing oil wells is characterized by the presence of a separator tank equipped with a manhole and flanges, some of which are connected to piping of low rigidity, equipped with shut-off valves, taps, check valves controlled by valves and samplers, on the pipelines of which are devices for measuring environmental parameters in the form of a thermometer and pressure gauge, as well as devices of mass, level and volume, having conclusions to the instrument panels, cars At the same time, the unit’s separator is equipped with a liquid level indicator with metro rods, one of the flanges of the separator contains a level and phase separation level transmitter with a remote transmitter with a calibration table of the volume of the separator by level, and temperature sensors are installed on it and pressure, as well as thermometers and manometers, the separator tank is strictly horizontally oriented, for which it is located on at least two lodgement supports with load consoles and gauges SSA, and to ensure the possibility of regulating the uniformity of the load during operation and maintaining a horizontal position, it is installed on a strictly horizontally oriented platform in the form of a frame located below the separator tank, mass meters include built-in devices and load cells rigidly mounted on jacks for load distribution, based on supports made with the possibility of height adjustment of the separator tank, with hydraulic levels installed on them, mounted on a platform, and equipped with with jacks that regulate the horizontal position of these supports and the separator tank at hydraulic levels, the tank hatch is located along the vertical axis of symmetry of the tank, equipped with a cover on which a load jack is connected, connected via cables or slings to a loading device located under the separator tank, piping includes an inlet pipe on which a gas-liquid flow control device is installed and through which gas-liquid flow from a well or wells to a sept-tank is ensured arator through its horizontal flange along the horizontal inlet and through its vertical flange to the vertical inlet pipelines, a common manifold pipe from the separator tank on which a gas-liquid flow control device is installed, connected to gas-liquid, liquid and gas pipelines, a drainage pipeline, a gas pipeline connecting the gas part of the tank through a valve with a flare line equipped with a liquid filter installed at the inlet, a liquid indicator in the gas and a gas metering unit, as well as a bypass th line.

In particular examples of the method’s execution, before starting the measurements, the means of measuring the mass, level, phase and volume are calibrated on the product substitute fresh water using working standards of mass, level and volume, they additionally lower the pressure in the separator tank to atmospheric and measure the amount of gas, and also measure and control the parameters of the environment and products over time by measuring temperature, pressure, gas flow rate, mass of the level, phase separation and volume of liquid products and the calculated values of the average density of the liquid, during the gas-liquid mixture supply period, a demulsifier and / or coolant are introduced into the inlet vertical pipeline and the time of sedimentation and separation of components during the filling and sedimentation period is visually and calculated by the calculated average liquid density by moving the phase boundary.

In particular examples of the installation, it is additionally equipped with falsopores mounted on the axis of the inlet pipe, the platform is made of a metal frame, or channels, or corners, a demulsifying device with a dispenser and a supply tank for the demulsifier and coolant in the form of steam and / or water, a comb of flow-out pipelines of wells is connected to the inlet pipe, equipped with a three-way valve, the separator tank is additionally equipped with a droplet eliminator. In particular examples of the installation, the container-separator and pipelines can be coated with thermal insulation, and the devices and sensors are equipped with a temperature control device, the secondary device of the strain gauges can have at least 8 calibration points for linearizing the characteristics of the installation, an additional horizontal gas separator is installed on top of the container-separator, at the same time, a multichannel multiphase indicator or gas-liquid flow meter is installed in front of the comb of flow pipelines of the wells.

An inventive step is a fundamental transition from improving elements of known devices and measurement algorithms, which allows only slightly increasing the accuracy of measuring flow rates, to a method of directly measuring the mass and level / volume of a liquid and determining individual components during loading, sludge and discharge of products, as well as adaptive determination of time measurements of flow rates for gas, oil and water. A reliable measurement in mass units is carried out by direct dynamic weighing during loading and static during sludge and separation, rather than indirect hydrostatic. In the separator tank, the mass, level and volume of the product is measured and monitored during the period of filling, sludge and discharge, while the mass of the gas is much less than the mass of the liquid. This provides the possibility of operational process control.

Improving the accuracy and reliability of measuring mass, level, phase separation, volume is achieved by pre-calibration of means for measuring mass, level, phase separation and volume on a fresh water production substitute using working standards of mass and volume; the reliability and accuracy of measurements of the flow rates of the components of the product, gas, liquid, oil and water are achieved by the results of the measurements and the choice of the operating mode of the installation with an acceptable measurement error, as well as with known calculated average density of the liquid and average densities of oil, gas and water obtained by analysis liquid samples at the inlet to the separator tank, the well-known formulas are calculated flow rate of liquid, water, oil and gas.

A reliable determination of the time of measuring flow rates is achieved by measuring and controlling the increment of mass, level, phase separation and liquid volume, measuring temperature, pressure, gas flow rate during the loading period for certain time intervals and comparing their changes with each other; reliable measurement of the time of liquid degassing, production rates are ensured by venting to atmospheric pressure with measuring the amount of gas, measuring and controlling the parameters of the medium and products, namely temperature, pressure, mass flow rate, level, phase separation and volume of liquid products, in time and calculating average fluid density values.

The use of working standards of mass and level for periodic monitoring, preserving the characteristics of measuring instruments for mass, level, phase separation and volume provides control of the reliability of the results of measuring mass, level / volume of products under operating conditions.

Obtaining a technical result in the form of improving the accuracy and reliability of measuring the level, volume, mass and flow rate of a liquid or gas-liquid is as follows.

Improving the accuracy of measuring the mass and volume of products in a separator tank is provided by installing hydraulic levels on the supports of the separator tank for horizontal installation and uniform load on the sensors.

Improving the accuracy and reliability of measuring fluid volume by level is ensured by the fact that the gauge contains a calibration table for this capacity, obtained by the volumetric method, the zero of which is associated with zero scales of the level gauge and the device of the liquid level indicators.

Improving the accuracy of measurements of gas flow due to its drainage is ensured by the installation of drop eliminators in the tank, and a liquid filter is installed at the inlet of the gas pipeline, the bottom of which is connected by a drain valve to the tank.

Improving the accuracy of gas measurement in the gas pipeline is provided by supplying the gas pipeline with a gas metering unit consisting of a flow meter, temperature, pressure sensors, a sampler and signal processing devices, with remote output circuits whose signals are output to the instrument panel gas computing device.

Ensuring accuracy - calibration and verification and ease of operation are achieved by placing a hatch symmetrically to the vertical axis of symmetry of the separator tank and placing a load jack on its cover connected via cables or slings to the working mass standard located below the separator tank, for example, a load receiving platform with a set of weights or mass of material of a certain weight. To exclude pollution, product release into the atmosphere and ease of operation, the pipeline, the pressure relief valve of the tank and the pressure relief valve are connected to the flare line brought to the portable flare pipeline.

The horizontal installation of the separator tank and the uniformity of the load on the load cells is ensured by the fact that there are platforms and tuning jacks located near them and under them. The load cells are connected to the secondary device through the junction box and cables.

Replacing a portion of the load cells located opposite the inlet pipe with fake supports with a plug flow structure and a large gas factor eliminates the impact of product flow shocks on weighing.

The uniformity of the load on the load cells of the separator tank, reducing the influence of strapping is ensured by the location of the load cells and pipelines symmetrically with respect to the symmetry axes of the tank separator, with a certain length and configuration to create low rigidity.

Visual control, measurement of the level and phase separation, calibration, control of the processes of filling, sludge and discharge of products is ensured by the fact that in the separator, a device of liquid level indicators with a metro-rod located on it and placed on it in a vertical collector is led to a vertical collector sections of glass quartz tubes.

Monitoring the parameters of the collection and measurement system is achieved by removing all the circuits of sensors and devices of temperature, pressure, level, mass of liquid, composition of the liquid and gas flow to the instrument panel.

Monitoring the level and contamination of the liquid on the filter of the gas pipeline is provided by installing a liquid level indicator and the connection of the bottom of the filter with the separator tank.

To ensure operational control and measurement of the level and volume of the scale of the device, liquid level indicators located on the screen and in the level gauge are calibrated in units of length and volume.

Monitoring the composition of the liquid after filling and sludge is ensured by installing a flow meter, a multiphase flow indicator, a thermometer, a manometer and a controlled gate valve on the outlet pipeline, outputting sensor circuits and controlling the valve to the instrument panels and automation.

A reliable sample of the liquid is reached by installing on the vertical sections of the gas-liquid, gas and liquid pipelines of the container-separator slotted sector samplers with valves.

Registration, accumulation and processing is ensured by the fact that in the instrument cabinet there are power panels, secondary devices, controllers, an electronic recorder of measurement parameters, product and environment control with the possibility of their processing, accumulation over a long period and outputting them to computing devices in the form of flash memory, controller or computer.

The inlet pipe is made of sections, one of which is connected through a valve to the horizontal flange to the separator tank, and the other through a vertical flange from above through a shut-off valve, which ensures the input and separation of product gas.

A demulsifying device with a dispenser and a supply tank for the demulsifier and coolant in the form of steam or water is installed at the inlet pipe, which reduces the time of liquid separation and decomposition of the emulsion in the separator tank.

The preservation of the installation conditions, measurements and the collection system was achieved by removing the gas, liquid and bypass pipelines into a common manifold pipe of the collection system through check valves.

An exception to the effect of piping is ensured by the fact that the secondary device of the strain gauges has at least 8 calibration points for linearizing the characteristics of the installation.

The expansion of functionality is provided by determining the time of phase separation and gas separation, as well as by reducing the time of sludge when determining preparation modes with an increase in the reliability of measurement of product components.

Continuous measurement of the mass of products during the filling process allows you to get the current value of the flow rate, to determine the pattern of production and optimally select the change time for each well, as well as to control the technological process of production of well products.

Measuring the mass value during the period of sludge and separation allows you to get a more accurate integral value of the production rate during the filling of the tank and to control the preparation of oil during production.

The use of a large-capacity measuring tank with an inlet pipe allows you to connect several wells simultaneously for monitoring and measurement, as well as any of them.

The determination of the time of phase separation and gas separation is achieved by turning off the supply of products and controlling changes in the parameters of the medium, namely temperature, pressure, mass, level, phase separation and volume of liquid products, in time during the period of sludge according to the calculated values of the average liquid density under operating conditions .

Measurement of product parameters and characteristics of the process of collecting, preparing, separating, measuring and draining products with an estimate of the oil-water phase separation time is achieved by supplying a coolant with a demulsifier into the vertical flow of production from wells of the inlet pipeline.

Reducing the time of sludge and increasing the reliability of measuring the components of the product during the filling period is achieved by feeding a coolant with a demulsifier into the vertical flow of production of wells of the inlet pipeline, followed by determining the time of sludge and separation of the components in time during the loading and sludge period.

Carrying out measurements during loading, sludge and discharge of products during a change in the parameters of the technological process for separating gas, liquid, oil and water when changing conditions, temperature and pressure when introducing a demulsifier and supplying coolant - steam and relieving pressure - gas separation allows you to choose the optimal process mode collection and preparation of products.

Obtaining a technical result in the form of enhanced functionality is as follows.

Visual and remote measurement of product parameters and improving measurement accuracy, namely, calibration, calibration of liquid level and volume measurement instruments, provide installation of plugs for metro rod installation on one flange of the separator tank and placement of a level and phase separation level transmitter with a remote output converter with calibration a table of the capacity of the separator by level, the signals of which through the cable are output to the instrument panel, and through the vertical collector a pointer device is connected liquid level with a metrostock located on it.

The presence of a flange for connecting the gas pipeline, steam pipe on top of the separator tank, as well as the connection of a mobile unit or pumping unit at the outlet pipe, makes it possible to empty the separator tank.

Compensation of the effect of platform subsidence on measuring the mass of products is ensured by the rigid installation of strain gauges through jacks on the platform to control the uniformity of the load during operation.

The design of the separator tank and pipelines with thermal insulation, and devices and sensors in a frost-resistant design or with heating devices ensures the operation of the installation at subzero temperatures.

The heat removal device, consisting of a cylinder to which a coolant is connected - water, located between the sensor and the support of the tank ensures the operation of the installation at high temperatures.

The expansion of the installation functions when measuring the structure of the gas-liquid flow at the inlet and the liquid at the outlet is ensured by installing multiphase flow indicators on vertical pipelines, for example, multiphase flow meters.

The installation of valves and flanges with quick-detachable connectors on pipelines allows you to connect units used in the oil and gas industry.

Connecting a multi-channel multiphase indicator or flowmeter to a comb of flow pipelines in a well allows you to control the modes of technology and equipment for an individual well and the entire group of wells.

Ensuring control and management of production technology of well products is achieved as follows.

Data on the characteristics of measuring instruments for mass, level, phase separation and volume obtained during calibration of the installation using working standards of mass and level for periodic monitoring provide control of the reliability of the results of measuring mass, level (volume) of products under operating conditions.

Carrying out measurements during loading, sludge and discharge of products during a change in the parameters of the technological process for separating gas, liquid, oil and water when changing conditions, temperature and pressure when introducing a demulsifier and supplying coolant - steam and relieving pressure - gas separation allows you to choose the optimal process mode collection and preparation of products.

Measurement and control of the mass, level and volume of production, taking into account the parameters of the environment, during loading, sludge and discharge, while the mass of gas is much less than the mass of liquid, provides the possibility of operational control of the process.

Registration, accumulation and processing is ensured by the fact that in the instrument cabinet there are power panels, secondary devices, controllers, an electronic recorder of measurement parameters, product and environment control with the possibility of their processing, accumulation over a long period and outputting them to computing devices in the form of flash memory, controller or computer.

Monitoring the level and contamination of the liquid on the filter of the gas pipeline is provided by installing a liquid level indicator and the connection of the bottom of the filter with the separator tank.

To ensure operational control and measurement of the level and volume of the scale, liquid level indicator devices located on the screen and in the level gauge are calibrated in units of length and volume.

Monitoring the composition of the liquid after filling and sludge is ensured by installing a flow meter, a multiphase flow indicator, a thermometer, a manometer and a controlled gate valve on the outlet pipeline, outputting sensor circuits and controlling the valve to the instrument panels and automation.

Connecting a multi-channel multiphase indicator or flowmeter to a comb of flow pipelines in a well allows you to control the modes of technology and equipment for an individual well and the entire group of wells.

Fast switching is ensured by the fact that instead of a controlled valve, a switching valve is installed on the liquid outlet pipe, controlled from the limit values of the liquid mass of the secondary device of the strain gauges.

The reliability control of the results of measuring the mass, level / volume of products under operating conditions is achieved as follows.

A reliable measurement in mass units is carried out by direct dynamic weighing during loading and static during sludge and separation, rather than indirect hydrostatic.

A reliable determination of the time of measuring flow rates is achieved by measuring and controlling the increment of mass, level, phase separation and liquid volume, measuring temperature, pressure, gas flow rate during the loading period for certain time intervals and comparing their changes with each other.

The use of working standards of mass and level for periodic monitoring, preserving the characteristics of measuring instruments for mass, level, phase separation and volume provides control of the reliability of the results of measuring mass, level / volume of products under operating conditions.

A reliable sample of the liquid is reached by installing on the vertical sections of the gas-liquid, gas and liquid pipelines of the container-separator slotted sector samplers with valves.

Visual control, measurement of the level and phase separation, calibration, control of the processes of filling, sludge and discharge of products is ensured by the fact that in the separator, a device of liquid level indicators with a metro-rod located on it and placed on it in a vertical collector is led to a vertical collector sections of glass quartz tubes.

Monitoring the parameters of the collection and measurement system is achieved by removing all the circuits of sensors and devices of temperature, pressure, level, mass of liquid, composition of the liquid and gas flow to the instrument panel.

Connecting a multi-channel multiphase indicator or flowmeter to a comb of flow pipelines in a well allows you to control the modes of technology and equipment for an individual well and the entire group of wells.

Obtaining a technical result in the form of improving safety, ease of use, reliability of measurement, level and phase separation control is achieved by installing in the separator tank on the upper flange of the liquid level gauge or phase separation, the device level gauges with a liquid meter under pressure and visual control of the level, pressure and temperature at the place of operation, as well as a removable flange for level control using a metro stock at atmospheric pressure.

The reduction in size and weight is ensured by the implementation of the platform in the form of a frame.

Automatic control of the measurement process is ensured by the installation of controlled valves in the gas-liquid, gas and liquid pipelines, the power supply circuits of which are connected by a cable to the automation panel, which is connected by a portable cable to the instrument and automation cabinet.

Operation safety at the installation is ensured by the implementation of all sensors, devices, controlled valves, electrical equipment in explosion-proof and intrinsically safe versions, the presence of gas control sensors connected to the alarm, the circuits are connected by cable to the instrument and automation panels connected to each other, and from the instrument and automation panels are displayed through connectors and a portable cable in a cabinet of devices and automation located at a safe distance.

The connection of the input and output pipelines of the separator liquid with the bypass pipeline with a valve allows you to disconnect the installation from the wells.

The convenience of operation during filling and draining of the liquid during operation, repair and calibration is ensured by the implementation of a container on the lower drainage flange, installation of two valves, one connected to the drainage system, and the other through the flange and quick-release connector serves to connect units and tankers.

The exclusion of the influence of the environment, temperature, wind, precipitation is ensured by the fact that the installation on both sides at an angle is protected by shields and installed under a canopy or placed in a container.

Improving the accuracy and ease of operation is provided by the location on the platform of metal structures, on which are placed height-adjustable capacity supports for installing strain gauges.

Fast switching is ensured by the fact that instead of a controlled valve, a switching valve is installed on the liquid outlet pipe, controlled from the limit values of the liquid mass of the secondary device of the strain gauges.

Automatic switching of wells for metering is provided by supplying a comb of wells with three-way controlled valves.

Reliability and safety of the process are ensured by constant monitoring of the environment - temperature and pressure, temperature and pressure sensors installed on the tank, whose signals are displayed on the instrument panel, as well as thermometers and manometers at the place of operation.

The claimed invention is illustrated by the following figures.

Figure 1 shows a schematic diagram of an installation for measuring, monitoring and controlling the technology of extraction of oil well products: a separator tank with nozzles and a manhole with a lid, land support legs with load consoles and mass meters, including attachment devices and strain gauges rigidly mounted on jacks for load distribution, platform, supports, hydraulic levels, cables, loading device, loading jack, piping from the inlet pipe, horizontal and vertical inlet pipes Dov, common manifold pipeline, gas-liquid, liquid and gas pipelines, drainage pipeline, gas pipeline, liquid filter, bypass pipeline, evacuation pump, shut-off valves, taps, check valves, controlled valves, samplers, thermometers, pressure gauges, mass, level devices and volume, instrument panels, automation and control systems, the installation of liquid level indicators with a metro rod, a level and phase separation level gauge, temperature and pressure sensors.

Figure 2 shows the claimed installation, further comprising a comb flow boxes of the wells, a demulsifying device, a shutter of the coolant; droplet eliminator in a separator tank.

Figure 3 shows the inventive installation, further comprising a horizontal gas separator, a multi-channel multiphase indicator or flow meter.

The claimed installation (figure 1) includes a separator 1 with an inlet pipe 2, which provides the supply of oil wells from the well (not shown). A shut-off valve or valve 3, a controlled valve 4 with valves 5, 6, 7 are installed on the input pipeline to connect a product flow control device — a multiphase indicator or flow meter 8, valve 9 to the horizontal input pipe 10 and the shut-off valve 11 to the vertical input pipe 12. On the flange (not shown) of the separator vessel 1 is located the valve 13 of the pressure gauge 14, the valve 15 of the pressure sensor 16, the pipeline of the safety valve 17 with a safety valve 18, a bypass valve 19 with a flare line 20. The separator tank 1 is equipped with a hatch 21. On the cover (not shown) of the hatch 21, a load jack 22 is installed, a temperature sensor 23, a level gauge 24. The gas outlet pipe 25 is equipped with a valve 26, a filter 27 with a liquid level indicator in the gas 28, and a liquid drain valve 29 , the valve of the gas meter 30, 31. The bypass gas line 32 is equipped with the valve 33 of the gas meter 34, a temperature sensor 35, a pressure sensor 36, a controlled valve 37, a gas sampler 38, a pressure gauge 39 and a thermometer 40, a gas outlet 41. piping liquid level indicator device 42 is provided with a valve 43, the lower liquid level indicator apparatus conduit 44 is provided with a valve 45, valve 46, manifold device 47 the liquid level indicator 48, upper gas valve 49, the lower drain valve 50, the device 51 metroshtoka liquid level indicators. The separator tank 1 is installed on the lodgement supports 52, load consoles 53. Registration unit 54. A liquid flow meter 56, valves 57, 58, 59 of the product composition 60, sampler 61, controlled valve 62, thermometer 63, valves are installed on the liquid outlet pipeline 55 into drainage 64, 65, pumping pump unit 66. Tank thermometer 67, sampler 68. Drain valve 69 with quick-detachable connector, valve 70 of the drain pipe to the drainage system. Mass meters (not shown in Fig.) Consist of devices 71, load cells 72 mounted on jacks 73, supports 74, mounted on a frame 75 with hydraulic levels 76, with jacks 77, a junction box 78 of load cells and a secondary device 79. Load device 80 A bypass line 81 with a valve 82. A common liquid and gas pipeline 83 with non-return valves 84 and 85 with an output common pipe 86, pressure sensors 16, temperature 23 and level gauge 24 are output to controller 87. Product flow control device 8 is output to controller 88. At The valve gate 4, 37 and 62 are displayed on the automation board 89, the instrument panel 90 and the instrument and automation cabinet 91. The device 34 meters, 35, 36 are displayed on the gas metering unit 92. Metro rod flange 93, gas-liquid sampler 94, drain line 95 connected to a drainage system or tank (not shown), a valve 96 for supplying gas from the metering line to the torch (not shown in the figure).

In a particular embodiment, the inventive installation is additionally equipped with a comb of flow lines for wells 97, a demulsifying device 98 installed on the inlet pipe 2, a shutter for the heat carrier 99, and a droplet eliminator 100 in the separator tank 1. This makes it possible to measure and analyze products.

To increase the measurement range of products to large gas factors, the claimed installation is additionally equipped with a horizontal gas separator 101, a multi-channel multiphase indicator or a flow meter 102.

Installation for implementing the method of measuring flow rates, monitoring and controlling the technology of production of wells works as follows.

In the installation, the condition of piping piping and valves (not shown) is checked so that all valves of the installation are in a closed state, the jacks 77 regulate the horizontal position of the supports 74 and the separator tank 1 with the lodgement supports 52 and the load console 53 at the hydraulic levels 76 installed on the supports 74 They supply power to all devices, signals from strain gauges 72 pass through box 78 to secondary device 79, readings are output to recording unit 54, information from which serves the operator to evenly distribute the load the ki to the load cells 72 using jacks to distribute the load 73. The signals from the load cells 72 also go to the controller 87. The load distribution jacks 73 regulate the uniform load on the load cells 72 from the lodgement supports 52 of the separator tank 1. Check the operation of the weighing device by lifting and removing the load device with a set of weights 80 and the load jack 22 on the hatch 21, while reading the readings of the devices in block 54.

Check the operation of the level gauge 24. They give signals, check the zero position of the controller 87 of the level gauge 24. Open the valves 43 of the upper pipeline of the device for liquid level indicators 43, the valves 45 of the lower pipeline of the device for liquid level indicators 44, valves 46, 47 on the device of the liquid level indicators 48. Lack of liquid they control by open valves 19 of the flare line 20 and drain valves 69 with a quick-detachable connector. A tank truck (not shown) is connected with fresh water of a certain density through a quick-detachable connector of the drain valve 69. A drain valve 69 is opened and a portion of fresh water is supplied to the separator vessel 1. The filling of the separator vessel 1 with water is monitored by the level gauge 24 and the device of the liquid level indicators 48. Additionally the liquid level in the tank-separator 1 is controlled through a flange 93 portable metrostock (not shown). Zero marks are set on the metro line on the device of the liquid level indicators 48 and the level gauge 24. The valve 50 is opened and when water appears in it, the zero operating point of the level gauge, the device of the liquid level indicators and the portable metro rod of the flange 93, the lower pipeline of the liquid level indicator 44, and the outlet pipeline are determined liquids 55.

To control and calibrate the level, as well as to calibrate the volume measuring device, the level gauge with the calibration table laid down and periodically calibrating the level gauge 24 use a liquid level indicator device 48, consisting of a metro rod 51, upper and lower pipelines 42, 44, valves 46, 47 of the gas phase separation -oil, oil-water, valves 43, 45, the collector of the device, liquid level indicators 48, the upper gas valve 49, the lower drainage valve 50, which with the separator tank 1 are a system for measuring and monitoring the level, phase separation and bemsya liquid products during loading and sludge. The installation is calibrated and verified by injecting reference portions of fresh water in units of water volume using a meter (not shown in Fig.) Through a valve 69 with level control by metro line 51 of a liquid level indicator device 48 and by using an exemplary, portable metro line inserted into a flange hole 93 of the separator tank 1, and compared with the readings of the level gauge 24 and the meter rod of the liquid level indicator device 51. Calibration is carried out to the maximum filling of the separator tank 1, equal to the limit value of 95% by volume EMA. The calibration results are recorded in the device level gauge 24 in the form of a calibration table of the main points. During the loading period, at the calibration points equal to 1/20 of the volume of the separator tank 1, the unit weighing device 72, 78, 79 is calibrated by loading with a set of standard weights 80, a load jack 22 on the hatch 21.

After calibration, the weighing devices and the level gauge device 24 of the separator 1 are calibrated by draining portions of water into a calibrated tank truck (not shown), weighed on a calibrated truck scale (not shown) until it is completely drained through the drain valve 69. The measurement error determines the mass measurement error and volume of production. After calibration and verification, the remaining water is drained into the drainage pipe through the valve 70 and the bypass valve 19 is closed to the atmosphere.

To supply products for measurement from the comb of the flow-out pipelines of wells 97, open the valve of one of the wells (not shown), open the shut-off valve 3 of the inlet pipe 2, the controlled valve 4, valves 5, 9, 11. To supply the products, all necessary devices are prepared and connected. : pressure sensor 16 through valve 15, manometer 14 through valve 13, temperature sensor 23 and gas metering devices: gas flow meter 34, thermometer 35, pressure sensor 36 through valves 30, 31, controlled valve 37, manometer 39, thermometer 40.

To measure gas, open the valves of the gas flow meter 30, 31 and the controlled valve 37. To relieve gas and relieve pressure, use the relief valve pipe 17, for this, open the bypass valve 19 of the flare line 20. At a critical pressure value, the relief valve 18 is activated.

The product enters through a horizontal inlet pipe 10 with a valve 9 and / or vertical inlet pipe 12 with a valve 11, into the separator tank 1, where its mass is measured using strain gauges 72, its temperature is controlled by a sensor 23 and a thermometer 67, pressure by a pressure sensor 16 and gauge 14, level gauge 24 measure the level. During installation, the level of liquid products is measured and monitored using a level gauge 24 and its volume is measured in the controller 87. The gas component of the product enters the gas outlet pipe 25 with a closed valve 26 and open valves 30, 31, passes through a filter 27, with a liquid level indicator 28, in which the liquid part is separated. The liquid component through the liquid drain valve 29 is returned to the separator tank 1, and the gas enters the gas meter 34, through the controlled valve 37, the gas outlet pipe 41 to the common liquid and gas pipe 83, through the check valves 84, 85 to the common pipe or collector 86 and further enters the transport system. In this case, the temperature and pressure sensors 36 monitor the temperature and pressure of the gas, and periodically take samples with the sampler 38. The signals from the devices 16, 23, 24 are sent to the controller 87, from the devices 34, 35, 36 of the gas line to the gas metering unit 92 , the data from which also go to the controller 87 of the instrument panel 90 and are recorded in block 54. For large gas factors, gas enters through a pipe 12 through a valve 11 to an additional horizontal gas separator 101 mounted on top of the separator tank 1 and then to the output gas pipeline 25 and gas measuring devices 30, 35, 36.

In the controller 87 automatically process the data received from the devices. The flow rates of the mass G _f and the volume of liquid products Q _{f are} calculated. The gas flow rate Q _{g is} calculated in the gas device 92, while its temperature and pressure are monitored by instruments 39, 40 and periodically sampled by a sampler 38, its average density ρ _{g is} calculated from the mass and volume of the product. The value of the average density ρ _l obtained by calculation in the controller is compared with the value ρ _l obtained as a result of laboratory analysis. If the densities ρ _l and ρ _l coincide, then sediment and _{gas-freeing of} products are not required. Otherwise, sediment is carried out to isolate dissolved gas from the product (foam settling) and liquid degassing. With a difference in the values of the relative measurement error of the average density equal to the specified measurement error, the gas degassing is completed. If the difference is greater than the permissible error, then open the valve 19 to the flare line for degassing to atmospheric pressure. Using the known average density ρ _W and the densities ρ _n - oil and ρ _в - water obtained as a result of laboratory analysis of liquid samples, the flow rates of the mass of liquid are calculated

G _W , water G _in and oil G _n according to known formulas.

To accurately measure the gas flow rate after filling, the valve 96 opens, the valves 26, 37 must be closed, and the dissolved residual gas enters through the gas meter 34 to the flare line 20 until complete degassing - atmospheric pressure. All gas passed through the meter is summed up and divided by the time of loading of the product with recalculation into daily output - flow rate.

If it is necessary to control the composition and structure of the input product stream, the valve 5 closes, the valves 6, 7 open and the mixture enters the product flow control device — a multiphase indicator or flow meter 8. The signals from the device are sent to controller 88. To control the technology and equipment modes for a particular well or the entire group of wells, the product flow passes through a multi-channel multiphase indicator or flow meter 102 connected to a comb of flow lines.

When the products in the tank reach the set value, but no more than 90% of the tank volume, its flow stops by closing the controlled valve 4 from the control panel 89 and after opening the valve 62 and 69, the process of draining into the outlet pipe 55 begins. At the same time, the valve 82 opens and the products with combs 97 enters the bypass pipe 81. To control the composition of products at the outlet of the tank, the indicator of product composition 60 is used. To do this, the valve 59 must be in the closed state, and the valves 57, 58 are open. Sampler 61 takes samples of the output, thermometer 63 controls the temperature. The signals from the device 60 are fed to the controller 88. If there is no gas and it is impossible to displace liquid from the tank by closing the valve 37, an additional pump pump 66 is additionally connected, and if there is a gas source through the valve 26, products can be forced out of the separator vessel 1. If necessary, the remainder products in the tank-separator 1 is discharged through a valve 69 or 70 into a drainage pipe or system.

If there is no need to measure associated gas, the valves 30, 31 are brought into a closed state, the valve 33 opens and the gas passes through the bypass pipe 32.

To eliminate environmental pollution during breaks in flow lines of wells, products from them are discharged into a container under atmospheric pressure or into a drainage system.

The practical applicability of the claimed device is shown in the following examples of specific performance.

Example 1

Measurements of flow rates, control and management of production technology for oil wells are shown on the installation with a separator capacity of 50 m ³ .

Verification before measurements is carried out as follows:

- check the condition of piping piping and the performance of valves, valves;

- if necessary, adjust the horizontal position of the separator tank at the hydraulic levels installed on the supports;

- turn on and prepare for work sensors, transducers, measuring instruments, control and management;

- adjusting jacks clarify the distribution of the uniform load on the load cells, using a load device, check the weighing device;

- check the absence of gas in the installation by monitoring the pressure on the manometer, in the case of pressure, open the flare valve;

- check the absence of fluid in the tank by opening the valve in the drainage system, and then close the valve;

Measurement of products during the filling process is as follows.

To supply gas-liquid products for measurement at the inlet pipeline, a shut-off valve 3 and a controlled valve 4, a valve 5 are opened, a valve on a horizontal pipeline 9 and a vertical pipeline valve 11. A gas-liquid mixture from one of the producing wells (group of wells) at a pressure of 1.5 MPa, temperature 95 ° C, with a water content of 70%, a gas content of 2.0 nm ³ / t, a production density of 970 kg / m ³ , enters the separator tank.

The filling mode of the tank is controlled by the level gauge 24, the device of the liquid level indicators 51 and its volume is measured in the controller 87. The gas component of the product enters the gas outlet pipe 25 with the gate valve 26 closed and the gate valves open 30, 31, passes through a filter with a liquid level indicator 28, in which the liquid part is separated. The liquid component through the liquid drain valve 29 is returned to the separator tank, and the gas enters the gas meter counter 34 through the controlled valve 37, the gas outlet pipe 41 to the common liquid and gas pipe 83, through the check valves 84, 85 to the common pipe or manifold 86 and then enters the transport system.

In the controller 87, a dynamic mass measurement is carried out according to the data of the secondary device 79, data from the devices of the pressure sensor level 16, temperature sensor 23, level sensor 24. Calculate the flow rate of the mass G _W and the volume of liquid products Q _W. The gas flow rate Q _{g is} calculated in the gas device 92, the data from which also go to the controller 87, while its temperature and pressure are monitored by instruments 39, 40.

Periodically sampling with a sampler 94, 68, 38 for laboratory analysis of the composition,

The values of the mass and volume of production calculate its average density ρ _W

According to the known average density ρ _g and obtained by laboratory analysis of fluid densities ρ _n samples - ρ oil and _a - values of flow rates of water liquid mass calculated G _x, G _{in the} water and oil G _n.

When the product reaches the set value in the tank, but not more than 90% of the tank volume, its flow stops by closing the controlled valve 4 from the automation panel 89.

The value of the average density ρ _l obtained by calculation in the controller is compared with the value ρ _l obtained as a result of laboratory analysis. If the densities ρ _l and ρ _l coincide, then sediment and _{gas-freeing of} products are not required. Otherwise, the products are sedimented to separate the dissolved gas from the product (foam settling) and to dissolve the liquid, open the valve 19 to the flare line for degassing to atmospheric pressure.

Product measurements during sludge and discharge are as follows:

to accurately measure the gas flow rate after filling, the valve 96 opens, the valves 26, 37 must be closed, and the dissolved residual gas enters through the gas meter 34 to the flare line 20 until complete degassing - atmospheric pressure. All gas passed through the meter is summed up and divided by the time of loading of the product with recalculation into daily output - flow rate.

When the density ρ _g and ρ _g coincide, the valves 62 and 69 are opened, the discharge process to the outlet pipe 55 begins. At the same time, the valve 82 is opened and the products from the well enter the bypass pipe 81. To control the composition of the products at the tank outlet, the product composition indicator 60 is used. For this, the valve 59 must be in the closed state, and the valves 57, 58 are open. Sampler 61 samples the output, thermometer 63 controls the temperature. The signals from the device 60 are fed to the controller 88. If there is no gas and it is impossible to displace liquid from the tank by closing the valve 37, an additional pump pump 66 is additionally connected, and if there is a gas source through the valve 26, products can be forced out of the separator vessel 1. If necessary, the remainder products in the separator tank 1 are drained through a valve 69 or 70 into a drainage pipe or system.

If there is no need to measure associated gas, the valves 30, 31 are brought into a closed state, the valve 33 opens and the gas passes through the bypass pipe 32.

When the lower mass value of 5 tons or the level / volume of 10% is reached, the electrified gate valve 62 is automatically closed and the measurement cycle is repeated again. The error in measuring the level is ± 1 mm, the volume is not more than 0.5%, the mass of the liquid is 0.5-1%.

Example 2

In Example 1, prior to measurement, calibration of the means for measuring the mass, level, phase and volume separation on a fresh water production substitute is carried out using working standards of mass, volume level, according to the results of verification, the measurement error of the mass and volume of production is determined, the results of verification in the form of calibration tables and correction factors introduced into the means of processing measurement data and calculation of flow rates.

A comb of flow out pipelines of the wells is connected to the input pipeline, equipped with a three-way valve, which automatically switches the wells to metering, a multi-channel multiphase indicator or flow meter for gas-liquid products installed in front of the comb of flow flow pipelines of the wells provides comprehensive control of the composition of the input production.

During the filling of gas-liquid products, a demulsifier and / or heat carrier in the form of steam or water is introduced into the separator tank through a demulsifying device with a batcher and a tank, and the settling and separation of the components during the filling and settling period is visually and calculated by moving the phase boundary average liquid density, which reduces the time of liquid separation and decomposition of the emulsion in the separator tank by tens of times.

A droplet eliminator additionally installed in the separator tank provides an increase in the accuracy of measuring the gas flow rate due to its dehydration by 5-10%.

An additional horizontal gas separator mounted above the separator tank provides 1.5 times better separation with a large gas factor.

To reduce the impact of fluid flow impacts on weighing with a cork flow structure and a large gas factor, the unit is equipped with falsion mounts installed opposite the inlet pipeline.

The separator tank and piping are thermally insulated, and the instruments and sensors are equipped with a temperature control device.

To linearize the installation characteristics, the secondary strain gauge device has at least 8 calibration points.

As can be seen from the presented examples 1 and 2, the combination of the claimed essential features allows us to solve the problem and achieve an increase in the measurement error of the level of ± 1 mm, the volume is not more than 0.5%, the mass of the liquid in static is 0.15-0.5%, in the dynamics of 0.5-1.0%, at this:

Improving the accuracy and reliability of measuring mass, level, phase separation, volume is achieved by pre-calibration of means for measuring mass, level, phase separation and volume on a fresh water production substitute using working standards of mass and volume; the reliability and accuracy of measurements of the flow rates of the components of the product, gas, liquid, oil and water are achieved by the results of the measurements and the choice of the operating mode of the installation with an acceptable measurement error, as well as with known calculated average density of the liquid and average densities of oil, gas and water obtained by analysis liquid samples at the inlet to the separator tank, the flow rate of liquid, water, oil and gas is calculated according to well-known formulas; reliable determination of the time of measuring flow rates is achieved by measuring and controlling the increment of mass, level, phase separation and liquid volume, measuring temperature, pressure, gas flow rate during the loading period for certain time intervals and comparing their changes with each other; reliable measurement of the time of liquid degassing, production rates are ensured by venting to atmospheric pressure with measuring the amount of gas, measuring and controlling the parameters of the medium and products, namely temperature, pressure, mass flow rate, level, phase separation and volume of liquid products, in time and calculating average fluid density values.

Improving the accuracy of measuring the mass and volume of products in a separator tank is provided by installing hydraulic levels on the supports of the separator tank for horizontal installation and uniform load on strain gauges.

Improving the accuracy and reliability of measuring liquid volume by level is ensured by the fact that a calibration table of this capacity is embedded in the level gauge,

obtained by the volumetric method, the zero of which is associated with the zero of the scales of the level gauge and the device of the liquid level indicators.

Improving the accuracy of gas measurement is ensured by draining the gas, supplying the gas meter with a gas metering unit consisting of a flow meter, temperature, pressure sensors, a sampler and signal processing devices with remote output circuits, whose signals are output to the instrument panel gas computing device.

Visual control, measurement of the level and phase separation, calibration, control of the processes of filling, sludge and discharge of products is provided by the device of liquid level indicators with a metropole and sections of glass quartz tubes located on it.

The expansion of functionality is provided by determining the time of phase separation and gas separation, as well as reducing the settling time when determining preparation modes with increasing reliability of measurement of product components, in particular:

Continuous measurement of the mass of products during the filling process allows you to get the current value of the flow rate, to determine the pattern of production and optimally select the change time for each well, as well as to control the technological process of production of well products.

Measuring the mass value during the period of sludge and separation allows you to get a more accurate integral value of the production rate during the filling of the tank and to control the preparation of oil during production.

The use of a large-capacity measuring tank with an inlet pipe allows you to connect several wells simultaneously for monitoring and measurement, as well as any of them.

The determination of the time of phase separation and gas separation is achieved by turning off the supply of products and controlling changes in the parameters of the medium, namely temperature, pressure, mass, level, phase separation and volume of liquid products, in time during the period of sludge according to the calculated values of the average liquid density under operating conditions .

Reducing the time of sludge and increasing the reliability of measuring the components of the product during the filling period is achieved by feeding a coolant with a demulsifier into the vertical flow of production of wells of the inlet pipeline, followed by determining the time of sludge and separation of the components in time during the loading and sludge period.

The design of the separator tank and pipelines with thermal insulation, and devices and sensors in a frost-resistant design or with heating devices ensures the operation of the installation at subzero temperatures.

The expansion of the installation functions of measuring the structure of the gas-liquid flow at the inlet and the liquid at the outlet is provided by installing multiphase flow indicators on vertical pipelines, for example, multiphase flow meters.

Connecting a multi-channel multiphase indicator or flowmeter to a comb of flow pipelines in a well allows you to control the modes of technology and equipment for an individual well and the entire group of wells.

The installation of valves and flanges with quick-detachable connectors on pipelines allows you to connect units used in the oil and gas industry.

The control and management of production technology for well products is ensured by taking measurements during loading, sludge and discharge of products during a change in the parameters of the technological process for separating gas, liquid, oil and water under changing conditions, temperature and pressure, when a demulsifier is introduced and a coolant is supplied - steam and pressure relief - gas separation allows you to choose the optimal mode of the collection process, product preparation and operational process control.

The reliability of the results of measuring the mass, level / volume of products under operating conditions is controlled by the use of working standards of mass and level for periodic monitoring, preserving the characteristics of measuring instruments for mass, level, phase separation and volume.

Monitoring the level and contamination of the liquid on the filter of the gas pipeline is provided by installing a liquid level indicator and the connection of the bottom of the filter with the separator tank.

To ensure operational control and measurement of the level and volume of the scale, liquid level indicator devices located on the screen and in the level gauge are calibrated in units of length and volume.

Monitoring the composition of the liquid after filling and sludge is ensured by installing a flow meter, a multiphase flow indicator, a thermometer, a manometer and a controlled gate valve on the outlet pipeline, outputting sensor circuits and controlling the valve to the instrument panels and automation.

Connecting a multi-channel multiphase indicator or flowmeter to a comb of flow pipelines in a well allows you to control the modes of technology and equipment for an individual well and the entire group of wells.

Automatic control of the measurement process is ensured by the installation of controlled valves in the gas-liquid, gas and liquid pipelines, the power supply circuits of which are connected by a cable to the automation panel, which is connected by a portable cable to the instrument and automation cabinet.

Registration, accumulation and processing is ensured by the fact that in the instrument cabinet there are power panels, secondary devices, controllers, an electronic recorder of measurement parameters, product and environment control with the possibility of their processing, accumulation over a long period and outputting them to computing devices in the form of flash memory, controller or computer.

The reliability of the results of measuring the mass, level / volume of products under operating conditions is achieved by the use of working standards of mass and level for periodic monitoring, preserving the characteristics of measuring instruments for mass, level, phase and volume separation provides control of the reliability of the results of measuring mass, level / volume of products under operating conditions.

A reliable measurement in mass units is carried out by direct dynamic weighing during loading and static during sludge and separation, rather than indirect hydrostatic.

Liquid sampling is performed by slotted sectorial samplers with valves.

Visual control, measurement of the level and phase separation, calibration, control of the processes of filling, sludge and discharge of products is ensured by the fact that in the separator, a device of liquid level indicators with a metro-rod located on it and placed on it in a vertical collector is led to a vertical collector sections of glass quartz tubes.

Monitoring the parameters of the collection and measurement system is achieved by removing all the circuits of sensors and devices of temperature, pressure, level, mass of liquid, composition of the liquid and gas flow to the instrument panel.

Reliability, process safety is ensured by constant monitoring of the environment - temperature and pressure, temperature and pressure sensors installed on the tank, the signals of which are displayed on the instrument panel, with thermometers and manometers at the place of operation, as well as the implementation of all sensors, devices, controlled valves, electrical equipment in explosion-proof and intrinsically safe performance, the presence of gas monitoring sensors, output to the alarm, the circuit brought the cable to the interconnected instrument panels and automation, and from dashboards and automation are output through connectors and a portable cable to the instrument and automation cabinet, located at a safe distance.

Convenience of operation, reliability of measurement, level and phase separation control is achieved by means of a liquid level gauge or phase separation, the installation of liquid level indicators with a pressure gauge and visual control of the level, pressure and temperature at the place of use, as well as a removable flange for level control using a meter gauge atmospheric pressure.

Thus, the implemented invention allows to expand the arsenal of known devices by a device for measuring flow rates, monitoring and controlling the technology of oil production of oil wells, which has accuracy, reliability, safety, versatility and ease of use.

Claims (14)

1. The method of measuring flow rates, monitoring and controlling the technology of production of oil wells, preferably for gas-oil mixtures with anomalous properties, is characterized by periodically supplying products in the form of a gas-liquid mixture to the measuring container-separator, separating the gas-liquid mixture by gas, counting the time the gas-liquid mixture reaches the measuring levels a separator tank and measuring the mass of a gas-liquid mixture at measuring levels during the separation of a gas-liquid mixture by gas after the formation of a pronounced gas-liquid interface, while continuous measurement of the mass of the gas-liquid mixture is carried out during loading and during sludge and separation, the temperature, pressure, flow rate of gas, mass, level, phase separation and volume of the liquid during loading are measured at certain intervals time, followed by fixing, saving and comparing changes with each other, after the gas-liquid mixture is stopped, the parameters of the medium are controlled by measuring temperature, pressure, mass, level, phase separation , the gas flow rate and the volume of the liquid during the sludge period according to the average liquid density, and the quality of gas-liquid separation is estimated by measuring or calculating the average liquid density and comparing the results with the actual product density obtained by calculating the analysis of the combined product sample at the inlet before measurements and measurement time, and when the specified value of the difference between the readings of the average and real density is less than the specified error, the gas is finished degassing, the flow rate is measured by mass and volume mu liquid products and determining flow rates of gas, liquid, oil and water. 2. The method according to claim 1, characterized in that before the start of the measurements, the means for measuring the mass, level, phase and volume are calibrated on the product substitute - fresh water using working standards of mass, level and volume. 3. The method according to claim 1, characterized in that they lower the pressure in the separator tank to atmospheric and measure the amount of gas, and also measure and control the parameters of the medium and production over time by measuring temperature, pressure, gas flow rate, mass, level, section phases and volume of liquid products; and calculated values of average liquid density. 4. The method according to claim 1, characterized in that during the period of supply of the gas-liquid mixture, a demulsifier and / or coolant are introduced into the vertical inlet pipe and the time of sedimentation and separation of the components during the filling and sedimentation period is visually and calculated by the average density calculated by moving the interface liquids. 5. The installation for measuring flow rates, monitoring and controlling the technology of oil well production is characterized by the presence of a separator tank equipped with a manhole and flanges, some of which are connected to a piping of low rigidity, equipped with shut-off valves, taps, check valves controlled by valves and samplers, on the pipelines of which there are devices for measuring environmental parameters in the form of a thermometer and manometer, as well as devices of mass, level and volume having conclusions to the instrument panels, cars mathematics and control of the installation, while the separator tank is equipped with a liquid level indicator with metro rods, one of the flanges of the separator tank contains a level and phase separation level transmitter with a remote transmitter with a calibration table of the volume of the separator by level, and temperature sensors are installed on it and pressure, as well as thermometers and manometers, the separator tank is strictly horizontally oriented, for which it is located on at least two lodgement supports with load consoles and meters SSA, and to ensure the possibility of regulating the load uniformity during operation and maintaining a horizontal position, it is installed on a strictly horizontally oriented platform in the form of a frame located below the separator tank, mass meters include built-in devices and strain gauges rigidly mounted on jacks for load distribution, based on supports made with the possibility of height adjustment of the separator tank, with hydraulic levels installed on them, mounted on a platform, and equipped with equipped with jacks that regulate the horizontal position of these supports and the separator tank at the hydraulic levels, the separator manhole is located along the vertical axis of symmetry of the separator tank, is equipped with a cover on which a load jack is connected, connected via cables or slings to a loading device located under the tank with a separator, piping includes an inlet vertical pipeline on which a gas-liquid flow control device is installed and through which a gas-liquid supply is provided from a well or wells to a separator tank through its horizontal inlet along the horizontal inlet and vertical inlet through its vertical flange, a common manifold from the separator tank, on which a gas-liquid flow control device is installed, connected to gas-liquid, liquid and gas pipelines, drainage pipeline, gas pipeline connecting the gas part of the tank through the valve to the flare line, equipped with a liquid filter installed at the inlet, a liquid indicator in g Aze and gas metering unit, as well as a bypass pipeline, a pumping pump is installed on the liquid outlet pipeline. 6. Installation according to claim 5, characterized in that the platform is made of a metal frame in the form of either channels, or pipes, or corners. 7. Installation according to claim 5, characterized in that it is additionally equipped with falshopory mounted along the axis of the inlet pipe. 8. Installation according to claim 5, characterized in that a demulsifying device with a dispenser and a supply tank for the demulsifier and coolant in the form of steam and / or water is installed on the inlet pipe. 9. Installation according to claim 5, characterized in that a comb of flow-out pipelines of the wells is connected to the inlet pipe, equipped with a three-way valve. 10. Installation according to claim 5, characterized in that the separator tank is additionally equipped with a droplet eliminator. 11. Installation according to claim 5, characterized in that the separator tank and pipelines are coated with thermal insulation, and the devices and sensors are equipped with a temperature control device. 12. Installation according to claim 5, characterized in that the secondary device of the load cells has at least 8 calibration points for linearizing the characteristics of the installation. 13. Installation according to claim 5, characterized in that an additional horizontal gas separator is installed on top of the separator tank. 14. Installation according to claim 9, characterized in that a multichannel multiphase indicator or flow meter for the flow of gas-liquid products is installed in front of the comb flow wells.

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