RU131069U1 - PUMPING PLANT FOR TRANSFER OF WATER IN A WELL FROM PLASTIC INTO PLAST - Google Patents

Abstract

A pumping unit for pumping water in a well, consisting of tubing, an electric motor, a pump, characterized in that the electric motor is located in the upper part of the pumping unit and is equipped with clamps to protect the communication lines of the metering unit for flow, pressure, vibration, temperature, docked to the bottom parts of the pump through a check valve, and the pump is made sectional, and the number of sections is interconnected with the discharge pressure.

Description

The utility model relates to the oil industry and can be used to pump water from one formation to another within the same well with poorly permeable reservoirs, for example, to organize selective focal water flooding.

Known pumping unit used for pumping water into the reservoir, including an injection well with a double production string, a submersible pump located in the interval of the aquifer, an injection pump for supplying fluid to the oil reservoir and a packer installed between the oil and aquifer (RF Patent No. 2211314 , BI No. 24, 08/27/2003)

The use of this installation requires a storage tank and other oilfield facilities; this installation cannot be used to pump water from the upper aquifer to the lower oil reservoir.

A well-known system for the development of a multilayer oil reservoir, providing for the possibility of downhole pumping of water from the underlying aquifer to the overlying oil reservoir and the selection of oil through production wells, and the pumping of water is provided due to the energy of the aquifer. (RF patent №2303125, BI No. 20, 07.20.2007)

This system is not effective in developing low permeability reservoirs.

The introduction of focal flooding in the development of upper unproductive formations posed the problem of switching to less productive equipment. At existing cluster pumping stations, connected injection wells have different injectivity (20 t - 600 m / day) and different required working pressure (13, 09-20.0 MPa). The grouping of wells by injectivity is limited by the capabilities of pumping equipment. Injection wells with low permeability reservoirs are usually not involved in the development process.

The technical task of the utility model is to increase the development efficiency by leveling the displacement front and involving low-permeability reservoirs in the development with savings on the construction and maintenance of pressure pipelines.

This problem is solved in that the pumping unit for pumping water in the well consists of tubing, electric motor, pump, and the motor is located in the upper part of the pumping unit and equipped with clamps to protect the communication lines of the metering unit for flow, pressure, vibration, temperature, docked to the bottom of the pump through a non-return valve, the pump is made sectional, and the number of sections is interconnected with the discharge pressure.

Figure 1 is a diagram of the pumping unit.

A pumping unit 2 was launched into the well 1 on the tubing string - tubing 3, which contains a compensator 4, a submersible motor 5 with cable 6, through a tread 7 connected to the sectional pump 8, a check valve 9, a metering unit for flow, temperature, vibration and pressure 10 with the communication line 11. Located below the docking unit 12 joins the pumping unit 2 with a packer 13 located above the roof of the oil reservoir. The flow rate, pressure, vibration, temperature is recorded by the metering unit 10 and transmitted through the communication line 11 to the electric motor 5. The clamps 14 serve to protect the communication line 11.

Pumping water from reservoir to reservoir provides for the possibility of taking water from the aquifer 15 to receive pump 8 and forcing it into the oil reservoir 16. In this case, water is pumped into the reservoir with the pressure necessary for pumping through the check valve 9 through tubing 3 through the borehole node for metering fluid, temperature, vibration, pressure 10.

During operation, under the required working pressure and depending on the pressure at the inlet of pump 8, the number of sections of the pumping unit 2 is selected, which makes it possible to cover the waterflood process in different sections of the areas depending on the injectivity of the oil reservoir 16 and the productivity of the aquifer 15. It is possible to improve regulation oilfield development processes. The operating mode of the injection well does not depend on other wells connected to the integrated pumping station - KNS. The rejection of pressure pipelines of the reservoir pressure maintenance system - PPD reduces capital expenditures and operating costs by several times. The solution allows to increase the efficiency of injection due to the partial automation of the injection well and the individual selection of the pump size for the injectivity of a particular well.

Claims (1)

A pumping unit for pumping water in a well, consisting of tubing, an electric motor, a pump, characterized in that the electric motor is located in the upper part of the pumping unit and is equipped with clamps to protect the communication lines of the metering unit for flow, pressure, vibration, temperature, docked to the bottom parts of the pump through a check valve, and the pump is made sectional, and the number of sections is interconnected with the discharge pressure.

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