RU184051U1 - DEVICE FOR GAS PUMPING FROM ANOTHER WELL SPACE - Google Patents

Abstract

The utility model relates to the oil industry and can be used to relieve excess gas pressure in the annulus of a well, lower the bottomhole pressure on the formation, or raise the dynamic level above the pump intake in wells with a low dynamic level when operating with electric centrifugal, electric screw and electro-diaphragm pumps. It provides increased efficiency of the technology for relieving excess gas pressure in the annulus of the well during operation by electric centrifugal, electric screw and electro-diaphragm pumps by sampling gas from the annulus of an oil well by means of a jet device and injecting it into the well sampling line, selecting and changing the nozzle of the jet device without stopping the operation of the well .

The essence of a useful model of a device for pumping gas from the annulus of wells consists in the fact that in wells with a large gas factor, equipped with electric centrifugal, electroscrew and electro-diaphragm pumps, after the wellhead shutoff valves are installed in the well, a jet device is installed on the flow line, with the workflow in which fluid raised by electric centrifugal, electric screw and electro-diaphragm pumps, the receiving chamber of which is connected to the annular space of the well zhiny separate gas feed line, on which the check valve, through tee or valve annulus. A bypass line with additional valves has been cut in parallel with the inkjet device to cut off the inkjet device and open the borehole fluid channel for the time of selecting and changing the nozzle of the inkjet device. The pressure in the lines is controlled by pressure gauges configured to transmit data to an automated control station. The connection scheme of the inkjet device and the bypass line is selected based on the design of the wellhead shutoff valves. The inkjet device can be installed on the bypass line, in which case, after putting into operation, the flow line serves as a bypass. The bypass line can be connected parallel to the inkjet device with the installation of two additional valves. In the presence of wellhead shutoff valves with a crosspiece, after the central valve, the bypass line can also be connected through a free lateral valve. In the case of installing wellhead shutoff valves with a tee, the bypass line can be connected through the flow line valve and the inkjet device through the upper, lubricator shutter of the wellhead shutoff valve and vice versa. In the presence of wellhead shutoff valves with two tees, the bypass line can be connected through the flow line valve and the inkjet device through the reserve flow valve of the wellhead shutoff valve and vice versa. The operation of the inkjet device is controlled by changing the pressure at its inlet by adjusting the nozzle orifice, or by changing the speed of the submersible electric motor, or by selecting the number of sections of electric centrifugal, electric screw, and electric diaphragm pumps to create the required pressure. At the same time, there is a decrease in excess gas pressure in the annulus of the well due to the selection of gas from the annulus of the oil well and forcing it into the line for selecting well products.

Description

The utility model relates to the oil industry and can be used to relieve excess gas pressure in the annulus of a well, lower the bottomhole pressure on the formation, or raise the dynamic level above the pump intake in wells with a low dynamic level, when operating with electric centrifugal, electric screw and electro-diaphragm pumps, by selection of gas from the annulus of the well and its injection into the line of selection of well products.

A known method of relieving excess gas pressure from the annular space of a well during operation by submersible electric pumps, (analog) (1), RF patent No. 2081998 ЕВВ 43/00, application filing date 09.11.1993, published on 06/20/1997. The way to relieve excess gas pressure from the annulus of the well during operation by submersible electric pumps is to install a jet pump on the tubing above the established dynamic level, which allows gas to be pumped out of the annulus of the well when the produced fluid passes through it. The disadvantage of this method is that annular gas bypass occurs in the underground part of the pumping unit, which causes difficulties in servicing and monitoring the operation. Known inkjet apparatus for by-pass gas bypass, (analog) (2), RF patent No. 2517287 Е21В, filing date 19.11. 2012, published May 27. 2014, which is installed above the dynamic level and communicates the annulus with the tubing string cavity through the check valve, and the annular gas bypass jet apparatus is made of two symmetrical halves in longitudinal section, one of which is mounted motionless with the check valve, and the second has the possibility of longitudinal movement inside the tubing string and connected through permanent magnets to a piston spring-loaded from below and placed in a cylinder parallel to the axis of the tubing string, the lower end of which is connected to the annulus space, and the upper - with the cavity of the tubing string. The disadvantage of this method is that annular gas bypass occurs in the underground part of the pumping unit, which causes difficulties in servicing and monitoring the operation.

A device is known for discharging oil gas from an annulus, (prototype) (3), patent RU 2256779 C1 ЕВВ 43/00, application filing date 05.11.2003, published on July 20, 2005. The device comprises a tubing string, an electric centrifugal pump installation, wellhead shutoff valves, an ejector device and a check valve. According to the invention, an ejector device is located at the wellhead by means of a quick detachable connection with the possibility of creating a region of reduced pressure in the receiving chamber compared to the pressure in the annulus of the well, and the check valve contains a locking pin that prevents the outlet of the check valve from clogging at high flow rates - oil supply gas. The non-return valve seat is removable for inspection during repairs. The disadvantage of this device is that to select and change the nozzle of the ejector device, it is necessary to stop the operation of the well, and a breakdown of the device can lead to a stop of the work of the well and an emergency.

The technical problem of the utility model to be solved is to increase the efficiency of the technology for relieving excess gas pressure in the annulus of a well during operation by electric centrifugal, electric screw and electro-diaphragm pumps by taking gas from an annular space of an oil well and forcing it into a line for selecting well products by means of a jet device, the selection and change of which produced without stopping the operation of the well.

The technical result achieved by the utility model is solved by the proposed device for pumping gas from the annulus of the wells, during operation of which in wells equipped with electric centrifugal, electroscrew and electro-diaphragm pumps, after the wellhead shutoff valves of the well are closed, a jet apparatus is installed on the flow line, in which serves as a fluid raised by electric centrifugal, electric screw and electro-diaphragm pumps, the receiving chamber of which is connected to the annular the space of the well with a separate gas supply line, on which a check valve is installed, through a tee or annular valve. A bypass line with additional valves has been cut in parallel with the inkjet apparatus to cut off the inkjet apparatus and open the borehole fluid channel during the selection and change of the nozzle of the inkjet apparatus. The inkjet apparatus can be installed on the bypass line, in this case, after putting into operation, the flow line serves as a bypass. The connection diagram of the jet apparatus and the bypass line is selected based on the design of the wellhead shutoff valves.

The essence of a useful model of a device for pumping gas from the annulus of wells is that in wells with a large gas factor, equipped with electric centrifugal, electric screw and electro-diaphragm pumps, after the wellhead shutoff valves are installed in the well, a jet apparatus is installed on the flow line, with a working stream in which serves as a fluid raised by electric centrifugal, electric screw and electro-diaphragm pumps, the receiving chamber of which is connected to the annulus of the wells s a separate gas supply line, on which the check valve is installed, through a tee or annular valve. A bypass line with additional valves has been cut in parallel with the inkjet apparatus to cut off the inkjet apparatus and open the borehole fluid channel during the selection and change of the nozzle of the inkjet apparatus. The output of the inkjet apparatus is connected to the production line of the downhole production. The pressure in the lines is controlled by pressure gauges configured to transmit data to an automated control station. The connection diagram of the jet apparatus and the bypass line is selected based on the design of the wellhead shutoff valves. The inkjet apparatus can be installed on the bypass line, in this case, after putting into operation, the flow line serves as a bypass. The bypass line can be connected parallel to the inkjet apparatus with the installation of two additional valves. In the presence of wellhead shutoff valves with a crosspiece, after the central valve, the bypass line can also be connected through a free lateral valve. In the case of installing wellhead shutoff valves with a tee, the bypass line can be connected through the flow line valve and the inkjet apparatus through the upper, lubricator gate valve of the wellhead shutoff valve and vice versa. In the presence of wellhead shutoff valves with two tees, the bypass line can be connected through the flow line valve and the inkjet apparatus through the reserve flow valve of the wellhead shutoff valve and vice versa. The operation of the jet apparatus is controlled by changing the pressure at its inlet by adjusting the nozzle orifice, or by changing the rotational speed of the submersible electric motor, or by selecting the number of sections of electric centrifugal, electric screw, and electric diaphragm pumps to create the required pressure. At the same time, there is a decrease in excess gas pressure in the annulus of the well due to the selection of gas from the annulus of the oil well and forcing it into the line for selecting well products.

The proposed device for pumping gas from the annulus of the wells allows to increase the efficiency of the technology for producing reservoir fluid in wells with a large gas factor, inject a gas-liquid mixture into the production line, and in the event of equipment breakdown or selection and changing the nozzle of the jet apparatus, it does not affect the operation of the well due to work without stopping the operation of the well.

The drawing shows a layout explaining the operation of the device for pumping gas from the annulus of the wells.

When using a utility model of the device, the work is performed as follows. From the wellhead shutoff valves of the well 7, a jet apparatus 1 is installed through the valve 9, the working flow of which is liquid raised by electric centrifugal, electroscrew and electro-diaphragm pumps, the receiving chamber of which is connected to the annular space of the well by a separate gas supply line 13, on which the check valve 4 is installed, with a sealed adjustable pipe 2, through a tee 6, equipped with sealed adjustable flanges 5. The output of the jet apparatus 1 in front of the linear valve 8 is connected to the discharge line ora of well products 14. At the outlet of the jet apparatus 1, an additional valve 10 is installed, after which a bypass line 12 is cut from the wellhead shutoff valve 7, through the valve 11, to open the borehole fluid channel during the selection and change of the nozzle of the jet apparatus 1. The pressure in the lines is controlled manometers 3, configured to transmit data to an automated control station (not shown in the drawing). When the jet apparatus 1 is operating, the speed of the working stream moving through the pipe in a narrowed section increases, and the pressure drops, that is, an increase in the kinetic energy of the stream is accompanied by a decrease in its potential energy. Gas is sucked into the receiving chamber, which is carried away by the work flow due to the pressure difference and surface friction and mixes with it. In the mixing chamber, the flow rates of the media become equalized, usually accompanied by an increase in pressure. The mixed stream is directed to a diffuser, where a further increase in pressure occurs and the kinetic energy of the stream is converted into potential energy, which is necessary for pumping or transporting the mixture through the pipeline.

What is new is that in the proposed utility model of a device for pumping gas from the annulus of wells, in wells equipped with electric centrifugal, electroscrew and electro-diaphragm pumps, after the wellhead shutoff valves are installed in the well, a jet apparatus is installed on the flow line, in which the fluid serves as a working stream, lifted by electric centrifugal, electric screw and electro-diaphragm pumps, the receiving chamber of which is connected to the annulus of the well by a separate line along the gas duct on which the check valve is installed through a tee or annular valve. A bypass line with additional valves has been cut in parallel with the inkjet apparatus to cut off the inkjet apparatus and open the borehole fluid channel during the selection and change of the nozzle of the inkjet apparatus. The output of the inkjet apparatus is connected to the production line of the downhole production. The inkjet apparatus can be installed on the bypass line, in this case, after putting into operation, the flow line serves as a bypass.

The proposed utility model makes it possible to increase the efficiency of the formation fluid production technology in wells with a large gas factor, to inject a gas-liquid mixture into the production line, and in the event of equipment breakdown or selection and changing the nozzle of the jet apparatus, it does not affect the operation of the well due to non-stop operation wells. The technological and technical results when using a utility model of an inkjet device for pumping gas from the annular space of wells into the flow reservoir are achieved by increasing the efficiency of the technology for producing reservoir fluid by relieving excess gas pressure from the annular space of the well during operation with electric centrifugal, electric screw and electro-diaphragm pumps in wells with large gas factor by taking gas from the annulus of an oil well through a jet about the device and its injection into the line of selection of borehole products, selection and change of the nozzle of the jet apparatus without stopping the operation of the well.

The economic effect of the use of the invention can be achieved by increasing the time between failures, extending the life of the pumping unit and reducing the time it takes to carry out additional types of work.

References.

1. RF patent 2081998 Е21В, application filing date 09.11.1993, published on 06.20.1997.

2. RF patent №: 2517287 Е21В, the filing date of the application is 19.11. 2012, published May 27. 2014.

3. Patent RU 2256779 C1 Е21В, application filing date 05.11.2003, published on July 20, 2005.

Claims (4)

1. A device for pumping gas from the annular space of the wells, including shutoff valves of the well with a flow line, on which an inkjet apparatus is installed with the possibility of using as a working fluid stream lifted by well pumps, the receiving chamber of which is connected to the annular space of the well by a separate gas supply line, on which a non-return valve is installed through a tee, characterized in that in wells with a large gas factor, equipped with electric centrifugal, electric screw and electric a bypass line with additional valves for cutting off the inkjet device and opening the borehole fluid channel for the time of selecting and changing the nozzle of the jet device is cut in parallel with the jet device by the Iaphragm pumps, and the outlet of the jet device in front of the linear valve is connected to the well production sampling line, while the mentioned lines are equipped with pressure gauges pressure control, configured to transmit data to an automated control station. 2. The device according to claim 1, characterized in that in the presence of wellhead shutoff valves with a spider, after the central valve, the bypass line is connected through a free lateral valve. 3. The device according to claim 1, characterized in that in the case of installing wellhead shutoff valves with a tee, the bypass line is connected through the flow line valve and the inkjet device is connected through the upper, lubricator gate of the wellhead shutoff valve and vice versa. 4. The device according to claim 1, characterized in that in the presence of wellhead shutoff valves with two tees, the bypass line is connected through the flow line valve and the jet device is connected through the shutter of the spare flow line of the wellhead shutoff valve and vice versa.

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