A flow regulator for oil extraction

 

The invention relates to the extraction of oil and is designed to regulate the flow of oil during operation of the well, and to transmit information about the parameters and the state of the well. The objective of the invention is to improve the accuracy of adjustment due to constant monitoring of the reservoir. For this purpose, the flow regulator when the oil includes a downhole tool and a surface control unit. The downhole tool is part of the telemetry system with hydraulic communication channel and contains the valve pulsator mounted above the diaphragm with the possibility of changing orifice. The control unit is configured to activate the downhole tool or mode of transmission of information about the parameters and the state of the well, or in the mode of flow control. In one well can be installed at least two downhole tool. The control unit can be made with the possibility of exposure to downhole devices by means of a flow control hydraulic signals, and hydraulic control signals intended for different downhole tools have different pulse sequence, and they downhole devices have the ability rasenia in the desired mode with its sequence of pressure pulses, created by the control unit. The downhole tool is mounted in the bore through the retainer and equipped in the upper part of the device for removal, which simultaneously performs the functions of unlocking the lock. 6 C.p. f-crystals, 2 Il.

The invention relates to the extraction of oil and is designed to regulate the flow of oil during operation of the well, and to transmit information about the parameters and the state of the well.

Known valve for controlling the flow of oil extraction on the patent of the Russian Federation 2094592.

Known flow regulator for U.S. patent 6182764 (prototype). This knob is used to adjust the flow of oil in multilateral wells with a common mouth. Such regulation is necessary to prevent the flow of oil from one reservoir to another. Overflow may occur due to the difference of pressure in the reservoir.

The disadvantage of this valve is limited functionality.

The task of invention - making downhole telemetry system of new non-core functions implementation of smooth adjustment in oil production on the basis of the received information about the parameters and condition of the well.

The decision of the EO and ground control unit, wherein the downhole tool is part of the telemetry system with hydraulic communication channel and contains the valve pulsator mounted above the diaphragm with the possibility of changing orifice, and a control unit configured to activate the downhole tool or mode of transmission of information about the parameters and condition of the well, or in the mode of flow control. In one well has at least one additional downhole telemetry system with hydraulic communication channel. The control unit is associated with downhole tools in hydraulic communication channel. The control unit is arranged to impact on the downhole tool by means of a flow control hydraulic signals, and hydraulic control signals intended for different downhole tools have different sequence of pulses. And they downhole instruments are made with the ability to recognize designed for them the signal. Each downhole tool configured to be included in the required mode of the sequence of pressure pulses generated by the control unit. The downhole tool is mounted in the well group performs the functions release the lock.

Conducted patent studies have shown that the proposed solution has novelty, inventive step and industrial applicability.

The invention is illustrated in Fig. 1 and 2, where Fig. 1 is a diagram of the application for ognizable multilayer wells; Fig. 2 - outline application for multilateral wells.

Valve pulsator 1 is part of the downhole tool 2 and is installed inside the casing 3, within which the tubing 4. On the surface of the casing in the zone of the oil reservoir is perforated. Ground complex downhole telemetry system consists of a pressure sensor 5, a receiver 6, the personal computer 7 and the printer 8. On the surface are also the control valve 9 and the control unit 10.

Valve pulsator 1 is part of the downhole tool 2, which contains the electronic unit 11 and the device for removal 12 with the latch 13. Oil reservoirs 14, 15 have different performance and separated by the packer 16. The pulsator valve 1 is mounted above the aperture 17 with the education variable in the process of adjustment of the annular gap. The downhole tool 2 is mounted above the reservoir, couples and multilayer deposits using ognizable wells (Fig. 1) or multilateral wells (Fig. 2).

When working in the mode of flow control valves pulsators 1 depending on the pressures in the reservoirs 15 and 16 change the flow area of annular channels between the pulsator valves 1 and orifice 17, which provides pressure equalization and eliminates the flow of oil from one reservoir to another.

For transmitting downhole data to the surface using the remote control 10 and the control valve 9 create a pressure wave with a specific sequence of pulses in pump-compressor pipe 3 by overlapping the control valve 9. This signal is received by the electronic unit 11 of the downhole tool 2 that is configured to enable exactly this sequence of pulses. The electronic unit 11 includes, respectively, in the operation of the flow regulator 1 mode pulsator valve. When this valve pulsator 1, for example using a stepper motor (shown in Fig. 1 and 2 is not shown), performs oscillatory motion and creates pressure pulsations of oil in the tubing 4, while these pressure pulsations are transmitted upwards by the pressure sensor 5. Connected to the pressure sensor 5 receiver 6 converts this signal and transmits it to the computer 7. Com is the temperature, and so on) corresponds to the current series of pulses, processes the information and displays it on the monitor screen of the computer 7, or print to the printer 8. As a result, the operator receives information about downhole parameters in each hole. After that, the electronic unit 11 is switched to the adjustment mode, when using a stepper motor exhibited the necessary clearance between the regulator valve and the diaphragm 17. After that, the electronic unit 11 can be put into sleep mode with minimal power consumption.

When maintenance is required on a special cable is lowered into the well the safety device to dock with the device for removal 12, produce the unfixing of the latch 13 and raise the device to the surface. After repair or replacement of the source of the downhole tool 2 is positioned and fixed by the clamp 13.

The application of the invention allowed: 1. To extend the functionality of the pulsator valve downhole tool telemetry system with hydraulic communication channel, giving it the function of a regulator of the flow of oil when the oil production of multilayer deposits.

2. To reduce system cost by combining the functions of two units: the pulsator valve and flow regulator in one.

oops monitoring equipment to service any number of faces of one well.

4. To improve the accuracy of adjustment due to constant monitoring of the reservoir.

Claims

1. The flow regulator if oil, including downhole and surface control unit, wherein the downhole tool is part of the telemetry system with hydraulic communication channel and contains the valve pulsator mounted above the diaphragm with the possibility of changing orifice, and a control unit configured to activate the downhole tool or mode of transmission of information about the parameters and the state of the well, or in the mode of flow control.

2. The regulator under item 1, characterized in that in one well has at least one additional downhole telemetry system with hydraulic communication channel.

3. The controller according to p. 2, characterized in that the control unit is associated with downhole tools in hydraulic communication channel.

4. The regulator under item 2 or 3, characterized in that the control unit is arranged to impact on the downhole tool by means of a flow control hydraulic signals, and hydraulic control signals intended for the RA is received with the ability to recognize designed for them the signal.

5. The regulator according to any one of paragraphs. 2-4, characterized in that each downhole tool configured to be included in the required mode of the sequence of pressure pulses generated by the control unit.

6. The regulator according to any one of paragraphs. 1-5, characterized in that the downhole tool is mounted in the bore through the retainer.

7. The regulator according to any one of paragraphs. 1-5, wherein the downhole device is equipped in the upper part of the device for removal, which simultaneously performs the functions of unlocking the lock.

 

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