RU2701268C1 - Method for measuring flow rate of oil wells - Google Patents

Method for measuring flow rate of oil wells Download PDF

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RU2701268C1
RU2701268C1 RU2018122190A RU2018122190A RU2701268C1 RU 2701268 C1 RU2701268 C1 RU 2701268C1 RU 2018122190 A RU2018122190 A RU 2018122190A RU 2018122190 A RU2018122190 A RU 2018122190A RU 2701268 C1 RU2701268 C1 RU 2701268C1
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wells
oil
devices
drainage
measuring
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RU2018122190A
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Анастасия Александровна Самбурова
Иван Юрьевич Сергеев
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Анастасия Александровна Самбурова
Иван Юрьевич Сергеев
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Abstract

FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry, in particular, to method of extracting parameters of operation of underground production wells, and can be used in information and measuring systems of mine development of oil for control of oil production process at mine method of extraction of high-viscosity oil. Method of measuring flow rate of oil wells involves installation of shutoff valves at the wellhead, installation of sensors to control temperature of underground wells at the mouths of underground wells with possibility of monitoring their parameters in a long time interval. At that, shutoff valves at the wellhead are equipped with drain devices providing drainage of wells. In addition to sensors for monitoring temperature meters are additionally installed flow meters, pressure sensors, thermomanometers, wherein installation of measuring instruments is carried out on automated devices for well drainage, as well as on devices preventing heat carrier outlet into mine workings. Information obtained from sensors is analyzed, while obtaining information can be carried out automatically in an online mode and periodically by an operator for oil and gas production in a given time interval, then, using data of measuring instruments and devices for drainage of underground wells and devices preventing heat carrier outlet into mine openings, control and control zones of thermal action over thickness and area of formation.
EFFECT: high accuracy of measurement data of the process and longer time interval for obtaining said data for enhancing control and control over the oil production process.
3 cl, 6 dwg

Description

The invention relates to the oil industry, in particular to methods for measuring the operating parameters of underground production wells and can be used in information-measuring systems for mine oil development to control the oil production process in a mine method for producing highly viscous oils, such as, for example, the Yareg field of highly viscous oil.

Known technical solution according to patent RU 2247239 C1 ЕВВ 47/10 (2000.01), publ. 02/27/2005, METHOD FOR MEASURING THE DEBIT OF A GROUP OF OIL WELLS, which relates to monitoring the state of development of an oil field by monitoring the operation of wells and accounting for total production based on the results of measuring their daily production rate. The technical result of the invention is the provision of adaptability in the selection of the survey period of each well from a group of wells. For this, the flow rate of a group of oil wells is measured by measuring the average value of the flow rate for an adequately selected time for each specific well of the group with alternate - according to a given program - connecting the wells to the meter and then recalculating the flow rate to the daily output.

Known technical solution according to the patent RU 2263208 C2 ЕВВ 47/00, ЕВВ 47/10 (2000.01), publ. 10.27.2005, METHOD FOR MEASURING PARAMETERS CHARACTERIZING MODES OF WELL OPERATION, AND A GROUP INSTALLATION FOR ITS IMPLEMENTATION, according to which at the same time, the measuring and pumping unit performs functions to determine the parameters characterizing the operation of the reservoir - well - equipment system, continuous monitoring of changes the effectiveness of its work, as well as the production of certain technological processes that increase the efficiency of oil production: pumping downhole products with a decrease in pressure at the mouths of wells less than the pressure in the collection system, or the pressure necessary for the re-injection of the individual components of the produced products into the wells during separate geological and technological measures, using two-section tube volumetric mass-pumping devices, which, if necessary, create high pressures stepwise, making up one multifunctional group measuring and pumping unit. Moreover, the installation consists of one, two or several two-section measuring and pumping devices, consisting of one or several sections, the main working bodies of which are cylinder-piston technological pairs. The pistons are connected to each other by a common rod passing through the separating sections of the chamber, with sealing stuffing boxes on both its opposite sides. The sections are also equipped with receiving and flow lines, position detectors, pressure and temperature sensors, which determine the values of the main parameters.

Known methods describe obtaining information from wells on the surface and cannot be used in mine conditions, in addition, they are not applicable for the development of fields with high viscosity oil. Currently, in the development of oil fields by the mine method (for example, the Yaregskoye field of high-viscosity oil), the development and production of oil is carried out by heating the reservoir with coolant (steam) to temperatures that reduce the viscosity of the oil. Optimization of the technological process of production and injection of the coolant is required, for which a new approach is needed to collect information on the operating parameters of underground production and steam distribution wells.

Currently, the flow rate of underground mine wells is measured using a steelyard, a stopwatch, and a bucket with a crane in the bottom for draining the liquid (NSHU Yareganft). These measurements are carried out in a time interval from 5 to 30 seconds. Disadvantage: measurements are made manually, periodically with an uneven interval, with a low degree of accuracy and do not give an adequate picture of the real state of the wells. Accordingly, the process of injecting steam into the mine’s mine workings is carried out without taking into account the real state of the wells, is insufficiently controlled and ineffective.

Closest to the claimed one is the technical solution according to patent RU 2648793 C1 ЕВВ 43/24, E21C 41/24 (2006.01) with a priority date of January 9, 2017, according to which the METHOD FOR MINING HIGH-VISCOUS OIL DEPOSIT includes mining of mines, drilling of surface injection and underground production wells, equipment with optical sensors for monitoring the temperature of underground wells with the installation of sensors on the mouths of underground wells, steam injection into surface injection wells, termination of steam injection at higher temperatures s and oil extraction from underground wells. Moreover, at the mouth of underground production wells, a closed oil recovery system device is installed, oil is accumulated in the storage tanks of the closed oil recovery system with level meters and a signal is transmitted to reach the established upper limit of the oil level in the storage tank via a fiber optic cable to a computer, information is processed and a command is issued to opening of shut-off devices installed on drain pipes of storage tanks, oil discharge into the pipeline of a closed oil collection system and further gravity oil transportation through the pipeline of the closed oil collection system to the sump of the local storage device, the signal is transmitted to reach the lower oil level limit in the storage tank via a fiber optic cable to a computer, information is processed and a command is issued to close the shut-off device and stop oil draining from the storage tanks to pipeline of a closed oil recovery system. Then, the production rate of production wells is automatically calculated based on the difference in time of the signals from the oil level switches taking into account the previously entered data on the length, angle, diameter of the casing of the production well and the volume of the storage tank, followed by a decision on the feasibility of repair or on the continued operation of the well. The patent also includes a device for implementing the method.

Disadvantages: all production wells in this method are connected through a pipe to a device of a closed oil collection system, which is a storage tank made in the form of vertical vessels, oil is drained from the drive through an electronic ball valve with a shut-off device. Opening a ball valve with an electric drive is carried out after collecting, processing information by a computer and issuing a command to control the locking devices. In the case of steam breakthrough in oil in a saturated reservoir, a water blockage phenomenon may occur in production wells, which will reduce the amount of oil-containing liquid produced (hereinafter referred to as LFG). There is no way to automate the collection of information without putting the drilling panel into closed operation, draining production wells for use on existing wells in working deviation blocks and panels. It is also impossible to accurately account for the volume of fluid drained from underground production wells simultaneously at the time of discharge through open shutoff devices installed on the drain pipes of the storage tanks, when oil is drained into the pipeline of a closed oil recovery system, since when the set upper level of the liquid level in the storage tanks is reached, the system takes into account only the volume of liquid to which the storage tanks themselves are equal. And at the same time, the draining fluid drained from underground production wells through the reservoir is not taken into account. The accumulation and discharge of oil is presented as a cyclic procedure controlled by a level gauge, leading to a cyclic mode of operation of a shut-off device with an electric drive installed on the drain pipes of the storage tanks, where any malfunction due to the high frequency of operation in the control and control circuits will lead to exclusion from operation, monitoring and accounting the entire bush of underground production wells connected to the drive.

Technical task: to propose a method of monitoring the flow rate of wells, in which the measurement, fixing the values of the parameters of oil production will be automatic in a long period of time (from one minute to several months) without the use of storage tanks for oil collection. In this case, in the event of steam breakthrough in oil in a saturated reservoir, the transfer of excess steam pressure from one of the production wells through the storage tank to the production wells connected to it is excluded, which will not allow the phenomenon of water trapping in production wells and will not reduce the volume of produced mud. Well drainage (discharge) is carried out irrespective of a possible malfunction of the shutoff valves, with electric or other types of drives with a third-party energy carrier, storage tank or electric drive chains of shutoff valves of the storage tank. The inventive method does not depend on the type of energy used in the mining block, which makes it universal. It allows you to automate, without putting the drilling panel into closed operation, the drainage of production wells and can be used on existing wells in working biased blocks and panels.

At the same time, in the technological process of oil production, the coolant is excluded from the mine’s mine workings, the production efficiency is improved and the working conditions of the workers involved in the oil production in the mine workings are improved. The result of applying this method is a process of controlled interaction (controlling the process of steam injection through steam injection wells into the formation, the amount of drilling fluid drained from production wells through automatic drainage (drain) devices of wells and pipelines and equipment for pumping drilling fluid from slopes) to increase the efficiency of operation of optimization equipment technological process, automation of measuring the flow rate of wells.

The purpose of the invention: to optimize the control of the production process, it is necessary to increase the accuracy and extend the time interval for measuring and receiving data from measuring devices, to automate the process of obtaining data for subsequent analysis.

To solve the technical problem, we propose a method for measuring the flow rate of wells, which allows you to obtain data on the volume of reservoirs over a long period of time (from one minute to several months), which positively affects the accuracy of the measurement data. In this method, it is possible to obtain other parameters of the wells, such as the pressure and temperature of the drilling fluid, which simplifies the process of monitoring and adjusting the injection of coolant into the required sectors of production slope blocks. Unlike the prototype, the inventive method eliminates the use of storage tanks for collecting oil through the use of automatic drainage devices. This, in combination with thermal control devices (steam cut-off, etc.), excludes the transfer of excess steam pressure from one of the production wells through the storage tank to production wells connected to it in the event of a steam breakthrough in the oil-saturated formation, which will not allow the occurrence of a hydraulic shut-off in production wells and will not reduce the volume of extracted HOF. Well drainage (discharge) is carried out regardless of the possible malfunction of valves, with electric or other types of drives with external energy. storage tank or electric drive circuits of shutoff valves of storage tank. The inventive method does not depend on the type of energy used in the production unit, which makes it universal, allows you to automate without draining the drilling panel into closed operation, draining production wells. Allows application on existing wells in working biased blocks and panels.

To obtain more complete information, sensors for monitoring, pressure, temperature, and an oil-containing fluid meter (OIL) from wells are installed on drainage devices. The prototype describes a method of closed operation and control of the volume and temperature of the injected steam and the temperature of the "LH" from underground wells. The inventive method of measuring the flow rate of oil wells is based on the control of a larger number of operating parameters of underground wells, which allows you to compile a complete picture of individual wells or sectors.

The technical solution is implemented by installing meters (flow meters) of mechanical, ultrasonic and other types, temperature sensors, thermometers, pressure sensors, pressure gauges, thermomanometers and other metering units on devices for automatic drainage (discharge) of wells, on a steam cutter, and / or other devices for drainage (drainage) of underground wells, which allow to effectively control and regulate heat exposure zones by thickness and by area of the reservoir, taking into account all factors. The selection of counters (metering units, flow meters) is carried out according to the nominal flow parameters. Devices, sensors for measuring pressure and temperature of the liquid for correct and accurate data acquisition, are installed at the exit from automatic devices for drainage (discharge) of wells and in automatic devices for drainage (discharge) of wells with straight sections according to the passports of the used units. Installation of temperature sensors, thermometers should be carried out in such a way that the measuring body is constantly completely immersed in the medium to be measured for more accurate and correct readings of the coolant in the oil reservoir. Installation of pressure sensors, manometers is made as close as possible to the wellhead. The specified method also allows to eliminate the marking of steam supply wells with a marker to search for the front of the distribution of steam (coolant) in the formation and through the fractures of the formation.

The inventive method of measuring the flow rate of oil wells is intended to collect and analyze information on the operation of underground wells in the thermal mine method of producing highly viscous oil. According to the same principle, information can be collected both from one well and from a well cluster. The inventive method of collecting information is carried out during the installation of several production wells through devices for automatic drainage (discharge) of wells, such as a drainage device, a vapor cutter and other automatic devices and devices designed for drainage (discharge) of wells in a common reservoir. At the same time, the information obtained on the well sector in general allows to reduce the complexity and time spent on collecting information, increase accuracy and extend the time interval of measurements, and optimize the cost of installing measuring instruments.

To implement the proposed method, the installation of measuring instruments for automatic drainage (drain) of wells installed at the mouth of an underground well (well cluster) for subsequent reading, transmission and / or recording in special forms for further analysis is carried out.

Measurement is carried out according to several parameters, such as:

- temperature;

- pressure;

- the volume of liquid or gas flowing out;

- characteristics of associated gases;

- fluid density;

- mass content of water in the liquid.

This collection of information is possible on any underground wells to optimize control of their work.

Practical studies have shown the effectiveness of the method of collecting these parameters when using them in wells in the mine, where the thermal mine production method is conducted. The operation of the instruments for fixing the above parameters showed the effectiveness of this method. Thus, the inventive method of measuring the flow rate of wells, in which information is automatically collected to control the operation of wells, will significantly reduce the cost of producing energy (steam) for heating the formation and its efficient distribution among sectors and production blocks, and reduce the response time to change in the operating parameters of underground wells, which will positively affect oil production in connection with a more accurate maintenance of the required parameters of their work.

Also in the inventive method includes the possibility of supervisory control, collecting information from metering stations installed on automatic drainage (drain) devices, using automated control systems for equipment connected via communication lines to a mine server, optimizing and automating the collection and analysis of information from wells mine and other sites. In this case, measurement and fixing of the values of the parameters of the wells, characteristics of the state of the monitored equipment installed on the wells, and comparison of these values with predetermined boundaries and reporting of deviations are made, automated control systems of equipment (ACS) are used. Automatic collection of information and dispatch control leads to a significant increase in the efficiency of oil production process and infrastructure management, and allows a system analysis of both processes and management objects.

When organizing a closed loop for monitoring and controlling the oil production process (Fig. 4): information from automated control systems of equipment (ACS) is used according to the mass meters when pumping down the slurry from slopes, a priority analysis of the water cut of the slurry is performed, the information received from metering stations installed on automatic drainage (drain) devices (PZRU), a steam cutoff device for an underground well and other devices for drainage (discharge) of wells, injection of steam into steam injection wells. With an increase or decrease in the volume of LWG, water cut by well clusters, their temperature and pressure is subjected to further analysis. Based on this, measures are being taken to optimize the oil production process. The objective of this control method is the process of controlled interaction (controlling the process of steam injection through steam injection wells into the reservoir, the amount of drilling fluid drained from production wells through automatic drainage (drain) devices of wells and pipelines and equipment for pumping drilling fluid from slopes) to increase the efficiency of operation of technological optimization equipment process, measurement, fixing the values of the parameters of oil production.

Communication lines of metering stations for automatic drainage (drain) devices (Fig. 5) are mounted in the mine’s mine communication network, where, through fiber optic and other lines, data from metering stations are sent to the mine server (central dispatch (technological) computer) and after processing and constructing analytical Tables and graphs give recommendations on the distribution of steam and its injection rate, the intensity of operation of sump wells. Also, according to the data obtained after analysis from the control nodes of production wells, if necessary, recommendations are given for visual inspection of wells and their output to the schedule of well workover (KRS). In the absence of automated processing of information coming from borehole metering stations, this analysis can be carried out by a specialist who, according to the approved parameters of the technological process, will distribute the list of wells and sectors to which first of all should be paid attention to the departments (oil production and geological service).

The inventive method of collecting and analyzing information will reduce the response time to changes in operating parameters of underground wells and instantly respond to these changes by adjusting the injection of steam through the well clusters of wells of production blocks. The parameters of the wells are analyzed such as the volume of drilling fluid produced from the well, its temperature and overpressure in the well, and periodic measurement of water cut in accordance with the approved schedule.

The main result of the proposed method, which increases the efficiency of the oil production process, is to increase the accuracy of measuring the flow rate of wells compared to the current measurement method (using manual labor, a bucket, steelyard and stopwatch) since the measurement time increases from 5-120 seconds, up to several hours and even days in a long time interval, for example, several months. In connection with such a long time measurement of well production, the accuracy of measurements increases many times, because the measurement made in the interval of several seconds gives an error of 2-3 times from the actual readings, which significantly increases the accuracy of diagnostics of the condition of the wells and the mine as a whole, and allows you to accurately adjust the parameters of the entire technological process of thermal mining of high viscosity oil

The collection of information on the operating parameters of underground wells during the development of oil fields by the mine method is achieved by installing means for measuring such parameters as the volume of fluid, its temperature and overpressure in the well. To do this, install a liquid meter (flow meter), a thermometer, a manometer or a combined thermomanometer at the mouth of an underground production well (wellbore). Then the data obtained from these measuring instruments are consolidated and a real picture of the state of the wells is obtained for a particular sector of the oil reservoir with a full description of the operating parameters of the wells and the rate of selection of oil-containing fluid.

An essential feature and fundamental difference of this method is the use of automatic drainage devices instead of storage tanks for oil collection (as in the prototype) and the installation of sensors on drainage devices (at the inlet and outlet) installed at the wellheads and constant monitoring of their parameters (such as flow rate, LWG temperature, overpressure) in a long (unlimited) time interval, which significantly increases the measurement accuracy and allows you to effectively adjust the parameters of the entire process the process of thermal mining of highly viscous oil. When using the claimed technical solution, the coolant is excluded from the mine workings of the mine, which positively affects the production efficiency and the working conditions of the workers involved in the process of oil production in the mine workings.

The installation of an oil-containing liquid meter (NLF) - a flow meter, a thermometer and a manometer is performed on automated well drainage devices (for example, www.fmdpatent.ru/byowners/262331/ drain valve PZRU 27.14, valve www.findpatent.ru/byowners/23 3604 / ), as well as on devices that prevent the release of coolant (steam) into the mine workings. Information can be obtained automatically (online) and / or periodically (information is collected by the operator for oil and gas production at a specified time interval). The information obtained is collected in the analytical center (programs on the PC, specialized servers, etc.) for further processing and analysis. Upon receipt and processing of the information, the deviation of the parameters of the ICF, in-situ pressure, etc., is analyzed. from optimal, thereby allowing you to quickly adjust them using drainage devices and steam cut-off devices. Thus, the installation of measuring instruments at the wellheads for continuous monitoring of their parameters will significantly increase the quality of the information received for their further processing and adoption of technological decisions on oil production processes.

The technical result is to increase the accuracy of the measurement data of the technological process and increase the time interval for their receipt to expand the capabilities of control and regulation of the oil production process.

The technical result is achieved due to the proposed method for measuring the flow rate of oil wells, including the installation of shutoff valves at the wellhead, equipment with sensors for monitoring the temperature of underground wells with the installation of sensors at the mouths of underground wells, with the possibility of monitoring their parameters in a long period of time, characterized in that the shutoff fittings at the wellhead are equipped with drainage (drainage) devices; in addition to sensors for temperature control, meters are additionally installed (by flow ry), pressure sensors, thermomanometers, while the installation of measuring instruments (LCR counter, thermometer and manometer) is carried out on automated devices with various types of actuators providing drainage (drainage) of wells, as well as on other devices of drainage (drainage) of wells that prevent the coolant from escaping (steam) to the mine workings, then the received information is analyzed, and the information can be obtained automatically (online) and periodically by the operator for oil and gas production at a given time interval Then, using the data of measuring instruments and devices for drainage (drainage) of underground wells and devices that prevent the coolant (steam) from entering the mine workings, they control and regulate the heat affected zones by thickness and by area of the reservoir area. Instruments and sensors for measuring pressure and temperature of the liquid for correct and accurate data acquisition are installed at the exit from the automatic devices for drainage (discharge) of wells and in the automatic devices for drainage (discharge) of wells with straight sections according to the passports of the components used, installation of temperature sensors, thermometers are produced in such a way that the measuring body is constantly completely immersed in the medium being measured. They receive information from automated control systems of equipment (ACS) according to mass meters when pumping down the slurry from slopes, conduct a priority analysis of the water cut of the slurry, analyze the information received from metering stations installed on automatic drainage (drain) devices, then inject steam into steam injection wells, with an increase or the reduction in the volume of the LWG is subjected to further analysis of the water cut in the well clusters, their temperature and pressure, on the basis of which measures are taken to optimize the technology eskogo process oil.

The essence of the technical solution is explained by the images in figures 1-6:

FIG. 1. The layout of underground production and steam distribution wells.

FIG. 2. Scheme of installation of shutoff valves at the wellhead

FIG. 3. The installation of control and metering units on automatic drainage devices and wellhead fittings of underground production wells in mining mining workings of mines.

FIG. 4. Closed loop control and management of the oil production process.

FIG. 5. The scheme for collecting information from wells on the dispatcher console.

FIG. 6. The scheme for collecting information from wells in the analytical center.

Where 1 - galleries and panels of the mine (mining):

2 - underground well in the thickness of the oil reservoir;

3 - shutoff valves;

4 - wellhead;

5 - drainage groove;

6 - tap, adapter from stop valves to an automatic drainage (drain) device;

7 - automatic drainage (drain) device;

8 - places for installing sensors and control elements for pressure and temperature in wells;

9 - counter (flow meter) mechanical, ultrasonic or other types;

10 - challenge;

11 - node metering steam;

12 - metering unit for oily liquid (NSG);

15 - fiber optic cables;

16 - computer surface control station;

17 - support mining;

18 - server control shaft;

19 - steam injection well;

20 - oil saturated formation;

21 - sump well;

22 - oily liquid (LFG)

23 - optical clutch;

24 - mine control switch.

CCP - steam generator;

PPSN - oil preparation and collection point.

An example implementation.

The inventive method is used in the development of oil fields by the mine method, for example, a highly viscous oil field. The development and production of oil is carried out by heating the reservoir with coolant (steam) to temperatures that reduce the viscosity of the oil. Therefore, to optimize the costs of production and injection of coolant, a new approach is required to collect information on the operating parameters of underground production 2 and steam distribution 19 wells. In the laid down drainage chambers of 1 mines, drilled wells diverging fan-shaped in the thickness of the oil reservoir 20 are used for oil selection (drainage) through the half-rising wells 2 drilled from production slopes and drill galleries, mine panels. Drainage from wells is carried out by oil and gas production operators located in the gallery and at the mine panels by opening shutoff valves 3 installed at the wellhead 4 until the oil-containing fluid 22 is completely drained (drained) from the wells to the bottom of the mine into the drainage grooves 5 In the process of field development, the operation of mining wells of a mine is characterized by their flow rate of the slurry, water cut of the slurry, excess pressure and temperature. Thus, the measurement of the amount of LFG, its temperature and pressure over the wells of the mining stock of mines is extremely important for the technology of data collection, analysis, control and management of the field development process.

The inventive method of measuring the flow rate of wells allows to obtain data on the volume of the reservoir oil (oil-containing fluid) (in contrast to the existing method of measurement in the time interval from 5 to 30 seconds) over a long period of time (from one minute to several months), which positively affects the accuracy measurement data. In this method, it is possible to obtain other parameters of the wells, such as the pressure and temperature of the drilling fluid, which simplifies the process of monitoring and adjusting the injection of coolant into the required sectors of production slope blocks. This closed process chain is shown in FIG. four.

The method includes the installation of mechanical, ultrasonic, and other types of 9 meters, temperature sensors, thermometers, pressure sensors, pressure gauges (installation site 8) and other metering units on automatic drainage (drainage) devices of 7 wells and devices with various types of drives providing drainage (drainage) of wells, a steam cutter, which allow to effectively control and regulate heat exposure zones by thickness and by area of the reservoir, taking into account all factors. The selection of counters 9 (metering units, flow meters) should be carried out according to the nominal flow parameters. Devices, sensors for measuring pressure and temperature of the fluid for correct and accurate data acquisition, are installed at the exit 8 from automatic drainage devices 7 (drain) with various types of actuators providing drainage (drainage) of wells and in the automatic devices for drainage (drainage) of wells with direct sections according to the passports of the used units 8. Installation of temperature sensors, thermometers should be carried out in such a way that the measuring body is constantly completely immersed in the medium being measured. Installation of pressure sensors, manometers is carried out as close to the wellhead as possible for more accurate and correct readings of the coolant in the oil reservoir. It also allows you to exclude the marking of steam supply wells 19 with a marker to search for the distribution front of steam (coolant) in the formation and through the fractures of the formation.

When conducting tests on the NSh-3 NShU “Yareganeft” “LUKOIL-Komi” in the 2T-1 slope block, this method of collecting information has shown its viability and can be used in the future to collect and analyze information on the operation of underground wells in the thermal mine method of producing highly viscous oil. It is also possible to collect both from one well and from a cluster of wells, this method of collecting information is also suitable for installing several production wells through automatic drainage (discharge) devices (for example, the drainage device according to patent RU 2632349, steam cutter according to patent RU 2625061 ) and other automatic devices and devices designed for drainage (discharge) of wells into a common reservoir 5, which allows you to take information on the well sector in general and reduce the complexity and time spent collecting information and optimize the cost of measuring instruments.

To collect information, measuring devices 8 are installed on the automatic drainage (drainage) devices of wells 7 installed on the mouth 4 of an underground well 2 for subsequent reading or entering in special forms for further analysis.

Also, this system provides a method of supervisory control, collecting information from metering stations installed on automatic drainage (drain) devices, using automated control systems for equipment connected via communication lines to a mine server, optimizing and automating the collection and analysis of information received from mine wells and other sites. The objectives of this method is to measure and record the values of the parameters of the wells, the characteristics of the state of the monitored equipment installed on the wells, and compare these values with predetermined boundaries and inform about deviations, automated control systems of equipment (ACS) are used. It leads to a sharp increase in the efficiency of managing the facility (infrastructure). Allows you to conduct a system analysis of both processes and control objects.

In FIG. Figure 4 shows a closed loop circuit for monitoring and controlling the oil production process: information from automated control systems of equipment (ACS) is used according to mass meter data when pumping down the slurry from slopes, a priority analysis of the water cut of the slurry is carried out, the information received from metering stations installed on automatic drainage (drain) is analyzed devices (PZRU) and other devices for drainage (discharge) of wells and devices with various types of drives providing drainage (drain) of wells, injection of steam into the steam production wells. With an increase or decrease in the volume of LWG, water cut by well clusters, their temperature and pressure is subjected to further analysis. Based on this, measures are being taken to optimize the oil production process. The result of implementing this control method is the process of controlled interaction (controlling the process of steam injection through steam injection wells into the formation, the amount of drilling fluid drained from production wells through automatic drainage (drain) devices of wells and pipelines and equipment for pumping drilling fluid from slopes) to increase the efficiency of operation of optimization equipment technological process, measurement, fixing the values of the parameters of oil production.

The data collection diagram from the wells to the dispatcher’s console (Fig. 5) and to the analytical center (Fig. 6) shows: communication lines of metering stations of automatic drainage (drain) devices 7 are mounted in the mine shaft communication network, where data is provided through fiber optic and other lines 15 from the installation sites of metering stations 8, 9, and metering stations 11, 12 (Fig. 4), they arrive at the mine server 18 in a central dispatch (technological) computer and, after processing and constructing analytical tables and graphs, recommendations are given on the distribution of steam and its injection intensity, the intensity of exploitation of sump wells 21. Also, according to the data obtained after analysis from control nodes of production wells 2, if necessary, recommendations are given for visual monitoring of wells and their output to the schedule of cattle. In the absence of automated processing of information coming from borehole metering stations, this analysis can be carried out by a specialist who, according to the approved parameters of the technological process, will distribute the list of wells and sectors to which first of all should be paid attention to the departments (oil production and geological service). This method of collecting and analyzing information will reduce the response time to changes in operating parameters of underground wells and instantly respond to these changes by adjusting the injection of steam through the well clusters of wells of production blocks. Well parameters are analyzed such parameters as the volume of oil produced by the well, its temperature and overpressure in the well and periodic measurement of water cut in accordance with the approved schedule.

Claims (3)

1. The method of measuring the flow rate of oil wells, including the installation of shutoff valves at the wellhead, the installation of sensors for monitoring the temperature of underground wells at the mouths of underground wells with the ability to control their parameters in a long period of time, characterized in that the shutoff valves at the wellhead are equipped with drainage devices, in addition to sensors for temperature control, flow meters, pressure sensors, thermomanometers are additionally installed, which provide well drainage, while the installation will measure The flax devices are produced on automated devices for well drainage, as well as on devices that prevent the coolant from entering the mine workings, then the information received from the sensors is analyzed, and information can be obtained automatically online and periodically by the operator for oil and gas production at a specified time interval , then, using data from measuring instruments and devices for drainage of underground wells and devices that prevent the coolant from entering the mine workings, polish and regulate heat affected zones by thickness and by area of the reservoir.
2. A method for measuring the flow rate of oil wells according to claim 1, characterized in that the measuring instruments use an oil-containing liquid meter, a thermometer, a manometer, instruments and sensors for measuring pressure and temperature of the liquid, which are installed at the outlet of the automatic well drainage devices and in automatic devices for drainage, with straight sections according to the passports of the used units, the installation of temperature sensors, thermometers is performed so that the measuring body is constant o completely immersed in a measured medium.
3. The method of measuring the flow rate of oil wells according to claim 1, characterized in that they use information from the automated control systems of the equipment according to the mass meters when pumping oily liquid from slopes, conduct a priority analysis of the water cut of the oily liquid, analyze the information received from metering stations installed on automatic drainage devices, then steam is injected into steam injection wells, while increasing or decreasing the volume of oil-containing liquid, They calculate the water cut in the well clusters, their temperature and pressure, on the basis of which measures are taken to optimize the technological process of oil production.
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