RU119413U1 - TOP DRIVE PUMPING PLANT FOR PLASTIC WATER INJECTION - Google Patents

Abstract

An overhead pumping unit for pumping water into a reservoir, containing a drive motor, a sectional centrifugal pump mounted on a frame, an inlet module, a check valve, a docking unit, a packer and a shut-off valve, characterized in that the drive motor is installed at the wellhead and equipped with a sub-motor frame , rigidly articulated with the inlet module, which is rigidly articulated with a sectional pump installed in the well, while a flow, pressure, temperature and vibration metering unit and a packer are docked to the lower part of the pump, and anchors are installed above and below the docking unit.

Description

The utility model relates to pump engineering and can be used to pump water into the reservoir in a system for maintaining reservoir pressure in oil fields.

Known pit pumping unit for pumping water into the reservoir, including an electric motor, a sectional centrifugal pump mounted on a frame, a suction and discharge nozzles, an input module (RF patent for utility model No. 35389, BPM No. 1, 01/10/2004).

For the installation of this installation requires the construction of a pit, which greatly complicates the technology of its operation.

Also known is a horizontal pumping unit for pumping water into the formation, including an electric motor connected by means of couplings to two opposite centrifugal pumps, the suction and discharge pipes of which are connected to each other by a pipeline. The installation is mounted on a supporting frame with pedestals and sealed with mechanical seals (RF patent for the invention No. 2142067, 11/27/1999).

With a horizontal centrifugal pump, additional sections can be docked in order to increase the pressure only if there are additional support frames mounted at the wellhead. Therefore, these facilities cannot be used in a reservoir pressure maintenance system with limited fishing areas.

The objective of the utility model is to create an installation that provides a pressure range of 500-3000 m without increasing the axial dimension and installation of the installation directly into the well.

The technical result is achieved by the fact that in a top-drive pump installation for pumping water into a formation containing a drive motor, a sectional centrifugal pump mounted on a frame, an input module, a check valve, a docking unit, a packer and a shut-off valve, according to a utility model, the drive motor is mounted on the wellhead and is equipped with a submotor frame rigidly articulated with an input module, which is rigidly articulated with a sectional pump installed in the well, while the butt of the pump is attached there is a metering unit for flow, pressure, temperature and vibration, and a packer, and anchors are installed on the top and bottom of the docking unit.

This design allows to simplify the installation and operation of the overhead pumping unit in the well without additional capital costs for the construction of the pit, since the drive motor is mounted at the wellhead, and the sectional pump is submersible and installed in the well, which does not require additional field for its operation, since the additional pump sections necessary to increase the pressure of the injected fluid are mounted directly in the well.

In addition, the proposed technical solution allows the use of these pumping units in the system for maintaining reservoir pressure in wells with limited production areas and increases the efficiency of downhole equipment.

The drawing shows a diagram of an overhead pumping unit for pumping water into the reservoir.

The installation comprises an electric motor 1 mounted at the wellhead 2 by means of an under-engine frame 3. A centrifugal sectional pump 4 is installed vertically in the well 2 by means of a frame 5. The shafts of the electric motor 1 and pump 4 are coupled to the shaft of the input module 6, intended for supplying water from the supply line 7 to pump 4. The metering unit 8 is docked to the lower section of the pump 4 through a check valve 9, which helps prevent the reverse rotation of the pump shaft 4 when the motor 1 is turned off. Anchors 13 installed at the bottom and top forging assembly 10 intended for locking the packer 12 relative to the borehole 2. The safety valve 14 is designed to separate the zones from zones below the packer the pump outlet 4.

Top drive pump installation for pumping water into the reservoir works as follows.

The pumped liquid through the supply line 7 and the input module 6 is fed to the working stages of the pump 4, where it acquires the necessary discharge pressure, and then flows through the check valve 9 and metering unit 8 into the reservoir, ensuring the maintenance of reservoir pressure. The docking unit 10 separates the pumping unit from the packer 12 located above the top of the formation and serving to seal the annulus.

Thus, the proposed utility model allows to simplify the installation and operation of the installation in the well without additional capital costs for the construction of the pit. In addition, the proposed utility model allows the use of these pumping units in the system for maintaining reservoir pressure in wells with limited production areas and increases the efficiency of downhole equipment.

Claims (1)

A top-drive pumping unit for injecting water into a formation, comprising a drive motor, a sectional centrifugal pump mounted on a frame, an input module, a check valve, a docking unit, a packer and a shut-off valve, characterized in that the drive motor is installed at the wellhead and is equipped with a sub-motor frame rigidly articulated with an input module, which is rigidly articulated with a sectional pump installed in the well, while the metering unit for flow, pressure, temperature and Braz and packer, and the top and bottom of the docking station installed anchors.