RU2689103C1 - Multifunctional automatic digital intelligent well - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, in particular, to control of well fluid (WF) parameters and control in system of well operation optimization with installations of electric centrifugal pumps (ECP) according to well operation conditions and WF parameters. Disclosed is a multifunctional automatic digital intelligent well comprising submersible equipment consisting of a submersible centrifugal pump with a submersible electric motor, submersible heating cable line, electric communication line with submersible telemetry system, high-frequency generator with possibility of energy transfer to inductor and ground equipment station, comprising control device connected through inputs and outputs with ground and submersible equipment and possibility of controlling submersible electric motor, wireless and / or wire communication module with possibility to control, receive and transmit data via wireless and / or wire communication means, dosing pump, manometer, level gauge with possibility of transmitting information to a control device, a reagent flow meter with possibility of transmitting data on reagent consumption to a control device. At that well is additionally equipped with wellhead module (WM) having movable branch pipe and discharge branch pipe into main pipeline, and ground equipment is equipped with a voltage / frequency converter and a flow express analyzer of proton magnetic resonance (PMRA), which includes a magnet, a dielectric tube with an inductance coil of the PMR detector wound around it, output of coil is connected to power amplifier of radio-frequency pulses (transmitter) and useful PMR signals amplifier (receiver) of relaxometer by high-frequency cable with quarter-wave length, from receiver, through the module, information on the "smart well – proton magnetic resonance analyzer" multifunctional complex system is transmitted to the oil field monitoring and control dispatcher control panel.

EFFECT: technical result is expansion of functionality of multifunctional automatic digital intelligent well with heating of pumping and compression pipes and electromagnetic radiation of face with inductor.

4 cl, 1 dwg

Description

The invention relates to the field of oil production, in particular to the control system of a multifunctional automatic digital intelligent well (MACIS) for simultaneous control of the rotor speed of a submersible electric motor (SEM) of a centrifugal electric pump (ESP) installation according to the monitoring of flow rate and downhole fluid parameters (SCF), heating the pump compressor pipes (tubing) to eliminate the formation of asphalt-resin-paraffin deposits (ARPD), induction heating of the bottomhole formation zone to reduce the viscosity efti (natural bitumen) and / or separation performance of said action and can be used in the fields in the extraction of oil from wells.

Known control system ESP, containing the control station with a frequency converter and controllers, a system of submersible telemetry (control station "Electon-05" FC-TTPT-800-380-50-1-UHL1 TU 3416-003-43174012-2001).

The disadvantage of this system is that the PEM is controlled only according to a predetermined task; there is no automatic control of the plant's performance in accordance with changing oil production conditions, since the management does not take into account the actual dynamic characteristics of the reservoir-ESP system.

The system of optimal control of ESP by the patent of the Russian Federation No. 88167 dated 10.27.2009 by authors Sipailov V.A., Bukreev V.G. and Sipaylova N.Yu.

The utility model relates to the field of process control in the oil industry and is aimed at improving the quality of control of the ESP system due to the real-time capability to automatically change the plant performance indicators and tune to the mode of optimal operation according to technical and economic criteria.

This technical result is achieved by the fact that the system of optimal control of the ESP unit containing a submersible electric pump unit installed in a well with a cable supplying its electric motor, a submersible telemetry unit with sensors for well status parameters and an electropump unit, a liquid flow meter installed on the flow line and connected to the first one the input of the identification block, a frequency converter connected to the control station, the power output of which is connected to the cable supply line and the information output of the control station is connected to the second input of the identification unit, the operating mode setter, additionally includes an optimization unit and a buffer pressure sensor, the output of which is connected to the first input of the optimization unit and the third input of the identification unit, the fourth input of which is connected to the first the output of the unit mode of operation, the second output of which is connected to the information input of the control station, the third output is connected to the second input of the optimization block, the third input of which is connected to the output of the identification block, the output of the optimization block is connected to the control input of the frequency converter.

The key performance indicators of the ESP system — capacity (flow rate) and energy consumption — depend on the technical parameters of the pump and pipeline, the rotor speed of the electric motor, and the formation and buffer pressures. The operation of the ESP unit is controlled by changing the performance (flow rate) of an electric centrifugal pump by controlling the rotor speed of the electric motor of the electric pump unit by changing the voltage frequency and the output voltage of the frequency converter and voltage (FNP) in accordance with the optimum values calculated in the optimization unit on the technical and economic criteria for the operation of ESP.

Optimization is implemented using an object model by iterating over the solutions obtained within the specified technological constraints. The result of the work of the optimization unit is the calculation of control actions (voltage and frequency of the voltage at the output of the frequency converter), which determine the minimum deviation of the technical and economic efficiency of the ESP (profitability ratio for electricity) from the planned value. Optimal values of control actions (voltage frequency and voltage value from the output of the FNP are transmitted to the control station. As a result of its operation, the rotor speed of the electric motor is changed and the installation mode is set to be closest to the optimum. The operating mode setpoint can be implemented as an automated workplace technologist, and the identification and optimization units by software (digital) method using programmable controllers, for example, station controllers the board and the inverter.

A disadvantage of the known system is the insufficient set of control parameters of the ESP and SCW, which are used to optimize the operation of the well and the insufficient set of functions for the multifunctionality of the automatic integrated station of the intellectual well.

The last drawback of the analogue for the control of ESP in the production of highly viscous oils is eliminated in the multifunctional automatic complex station of the intellectual well according to the patent of Russian Federation №128894 from 10.06.2013, the authors Glebov VI, Skvortsova D.Е.

The system consists of a submersible installation of an electrical centrifugal pump (ESP) with a submersible electric motor (SEM), a submersible heating cable line, an electrical communication line and ground equipment consisting of an SEM control device and cable heating (KN), a high-frequency generator with the ability to transfer energy to the irradiator inductor at a distance of more than 1000 m from the generator.

The technical result achieved by the prototype system is to ensure the integrated work of one station for simultaneous or separate controlled process of pumping equipment operation, heating the tubing, induction heating of the bottomhole formation zone and / or pipelines, with the ability to archive data on the operation of each of the processes, remote control and transmitting data on the operation of each of the processes wirelessly and / or wired channel, as well as an increase in the time between failures of the well equipment tions by providing increase reliability, reduce time and labor for installation and operation of automatic intelligent well multifunction integrated station. Due to the fact that the prototype system is made in the same package, this makes it possible to deliver the assembled station and compactly place the station at the place of operation, which reduces the labor costs for assembling and launching into operation, as compared to the prototype.

The station has an additionally installed system for metering reagent and induction heating of the bottomhole formation zone and / or pipelines and has the ability to provide a complete process of optimization and intensification of production by ensuring optimal operation of pumping equipment by eliminating ARP and scaling at the well equipment and preventing an increase in fluid viscosity when lifting the tubing.

Due to the above, the possibility of formation of paraffin and scaling on submersible borehole equipment is eliminated, the installation, operation and maintenance of the station is simplified, the equipment-to-failure time is increased compared to the known prototype device.

During operation of problematic wells complicated by ARPD, it is necessary to warm up the bottomhole formation zone without raising the formation fluid (for example, when preparing a well for launch, to reduce the viscosity of the fluid due to heating and to provide milder conditions for the operation of the SEM) or to perform induction heating together with powering the SEM and heating the tubing, when the well has already entered the mode and it is necessary to maintain a stationary thermal field of the wellbore. Or to produce only the power supply of the SEM and the dosed supply of the reagent, when the production parameters allow to produce the liquid without heating for a certain period of time, and when the SEM is disconnected, it is possible to leave the well heated and the dosed supply of the reagent in operation (this situation occurs when the well is operated with a periodic mode Work on the pumping fluid). Thus, without readjusting the installation, in automatic mode, without lifting nodes from the wellbore, its functional and technological capabilities are expanded. All of these operations may be performed simultaneously in the complicated ARP and scaling wells.

The disadvantages of the prototype is the lack of a set of control parameters ESP and SKZH, which is the optimization of the well and the absence of a device for measuring the flow rate of the well fluid, according to which the measurement of the flow rate of the IP; the lack of water concentration, density and viscosity meters, which determine the moment on the shaft of the SEM and regulates the frequency of the rotor of the engine, the absence of the SEM frequency converter.

These drawbacks of the analogs and the prototype can be eliminated in our multifunctional automatic digital intelligent well (MACIS) using a PMR analyzer (PMRA) and a voltage and frequency converter in the surface equipment.

The technical result of the invention is to expand the functionality of the claimed MACIS due to the additional use of PMRA and the FLL.

The technical result is achieved in that in a multi-functional automatic digital intellectual well, including a submersible equipment consisting of a submersible centrifugal pump with a submersible electric motor, a submersible heating cable line, an electrical communication line with a submersible telemetry system, a high-frequency generator with the ability to transfer energy to the inductor and a ground station equipment, including a control device connected via inputs and outputs with ground and submersible equipment and the ability to control the submersible motor, wireless and / or wired communication module with the ability to control, receive and transmit data by means of wireless and / or wired communication, metering pump, pressure gauge, level gauge with information transfer capability to the control device, reagent flow meter with transmission capability data on the flow of reagent to the control device according to the present invention, the well is additionally equipped with a wellhead module (PA), which has a movable port and a discharge pipe to the master The piping and ground equipment is equipped with a voltage / frequency converter and a flow proton magnetic resonance analyzer (PMRA), which includes a magnet, a dielectric tube with an PMR sensor inductance wound around it, the output of which is connected to a radio frequency power amplifier with a high-frequency cable pulses (transmitter) and amplifier useful signals PMR (receiver) relaxometer, from which through the module information about the multi-functional automatic complex th system "intellectual well - proton magnetic resonance analyzer" is transmitted to the control room monitoring and control oil production has.

While the MIND is made in the form of an expanding conical pipe section; flow-through PMRA is used to measure well performance and to measure the physicochemical parameters of the well fluid.

The invention is illustrated in the drawing, where in FIG. 1 shows the implementation scheme of the inventive system.

Designations in the drawing:

1 - well;

2 - ESP;

3 - SEM;

4 - immersion heating cable lines;

5 - communication line with the submersible telemetry system,

6 - high frequency generator

7 - inductor

8 - ground equipment station

9 - control device

10 - control module

11 - dosing pump

12 - manometer

13 - level gauge

14 - flow meter

15 - voltage / frequency converter,

16 — wellhead module;

17 - movable pipe

18 - discharge pipe

19 - the main pipeline

20 - flow-through rapid analyzer of proton magnetic resonance

21 - magnet

22 - dielectric tube

23 - coil sensor PMR,

24 is a quarter-wave RF cable,

25 - power amplifier radio frequency pulses (transmitter,

26 - amplifier useful signal PMR (receiver),

27 - relaxometer

28 - dispatching control and control of oilfield.

MATIS 1 includes a submersible equipment consisting of a centrifugal pump 2 with a submersible electric motor 3, a submersible heating cable line 4 tubing, an electrical communication line 5 with a submersible telemetry system, a high-frequency generator 6 with the ability to transfer energy to the inductor 7, placed a distance more 1000 m and ground equipment stations 8, including a control device 9, connected via inputs and outputs with ground and submersible equipment with the ability to control the SEM, module 10 is wireless Oh and / or wired communication with the ability to control, receive and transmit data by means of wireless and / or wired communication (not shown in Fig. 1), metering pump 11, pressure gauge 12, level gauge 13 with the ability to transmit information to the control device 9, Reagent flow meter 14 with the ability to transfer reagent consumption data to a control device, in which, according to the invention, the well is additionally equipped with a voltage / frequency converter 15 for controlling the rotor speed of the submersible electric motor 3 ESP 2 and the wellhead module ( M) 16, having a movable nozzle 17 for taking a sample from the PA and a discharge pipe 18 for ejecting SCZ into the main pipeline 19, and the ground equipment has a flow-through rapid proton magnetic resonance analyzer (PMRA) 20, which includes a magnet 21, in the interpolar the space of which passes the dielectric tube 22 with the coil 23 of the PMR sensor wound on it, the output of which is quarter-wave (λ / 4 = c / 4ν _o = 3⋅10 ₈ / 4⋅6⋅10, where c is the speed of light, ν _o = 6⋅ 10 ⁶ MHz - the resonance frequency of the PMR-relaxometer PMRA) cable 24, connected to the amplifier power 25 radio frequency pulses (transmitter) and amplifier useful signals PMR (receiver) 26 relaxometer 27, through the module 10 transmitting information about MAXIS-PMRA to the dispatching control panel 28 of the control and oilfield control.

MATSIS 1 operates as follows: a centrifugal pump 2 with a submersible motor 3 pumps out a well fluid of viscous oil, which has a reduced viscosity after it is heated by a submersible heating cable 4, a high-frequency generator 6 by transferring energy from the inductor 7 to the annulus; in the ground equipment station 8, including a control device 9, connected via inputs and outputs with ground and submersible equipment with the ability to control the SEM through the control module 10 ESP + SEM, metering pump 11, control with pressure gauge 12, level gauge 13 flow meter 14 provides reagent the ability to transfer data on the flow of reagent to the control device, in which, according to the invention, the well is additionally equipped with a voltage / frequency converter 15 for control depending on the parameters of the SLE of the rotor of the submersible electric motor 3 ESP 2. In the wellhead module 16, the movable nozzle 17 carries out sampling in any cross section of the UM, through the discharge nozzles 18, part of the SKZ is pushed into the main pipeline 19, and a part of the sample through the movable nozzle 17 enters the flow express -an analyzer of proton magnetic resonance (PMRA) 20, namely in the dielectric tube 22 with the coil 23 wound on it in the interpolar space of the magnet 21 of the PMR sensor, the signal of which PMR through which a quarter-wave cable 24 serves ts into the amplifier of useful signals PMR (receiver) 26 of the relaxometer 27 and then through module 10 information about the parameters of the MACIS and the physico-chemical parameters of the SCZ according to GOST R 8.615-2005 GSI is transmitted to the dispatching control 28 of the oilfield control and management.

The performed model experiments on the bench and modeling of the flow rate control process showed the suitability of the MACIS-PMRA system for solving problems of optimizing the operation of an intelligent well.

Claims (4)

1. Multifunctional automatic digital intelligent well, including a submersible equipment consisting of a submersible centrifugal pump with a submersible electric motor, a submersible heating cable line, an electrical communication line with a submersible telemetry system, a high-frequency generator with the ability to transfer energy to the inductor and a ground equipment station that includes a control device connected via inputs and outputs with ground and submersible equipment and the ability to control the submersible electric motor, wireless and / or wired communication module with the ability to control, receive and transmit data via wireless and / or wired communication, metering pump, pressure gauge, level gauge with information transfer capability to the control device, reagent flow meter with the ability to transfer reagent consumption data to the control device, characterized in that the well is additionally equipped with a wellhead module (PA), which has a movable pipe and a discharge pipe into the main pipeline, and the ground equipment is equipped with voltage / frequency generator and proton magnetic resonance flow analyzer (PMRA), including a magnet, a dielectric tube with an inductor of a PMR sensor wound on it, the output of which is connected to a RF pulse power amplifier (transmitter) and useful amplifier with a high-frequency quarter-wave cable signals of the PMR (receiver) of the relaxometer, from which, through the module, information about the multifunctional automatic complex system “intelligent well - proton magnet The resonance analyzer is transmitted to the dispatcher console for control and management of the oilfield. 2. Multifunctional automatic digital intelligent well under item 1, characterized in that the MIND is made in the form of an expanding conical pipe section. 3. Multifunctional automatic digital intelligent well under item 1, characterized in that the flow through PMRA is used to measure the performance of the well. 4. Multifunctional automatic digital intelligent well under item 1, characterized in that flow-through PMRA is used to measure the physico-chemical parameters of the well fluid.

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