RU25530U1 - DEVICE FOR SUPPLYING HEATED WATER TO A PRESSURE WELL - Google Patents

Description

DEVICE FOR SUPPLYING HEATED WATER TO A PRESSURE WELL

The utility model relates to the oil industry, and specifically, to devices for intensifying oil production by preparing and supplying heated water to an injection well.

A device is known for supplying heated water to an injection well, comprising a pump at a water intake, pipes for supplying water from a pump to an injection well, a container and heaters therein for heating water supplied to an injection well (see, for example, A.Kh. Mirzanjanze, I .M. Ametov, KS Basniev, et al. Technologies for natural gas production. M., Nedra, 1987; international application “Method for the production of hydrocarbons from underground sources No. PCT / RU94 / 00136, IPC Е21В 43/18).

The disadvantage of this device is that it consumes a very large amount of fuel or electricity, since you have to heat all the water pumped into the reservoir.

This drawback is partially eliminated in another known device adopted as a prototype (see, for example, patent DE 3704935, class F 2413/08, 08/25/1988).

In the prototype, the device is lowered into a water well, thermal water is lifted by a jet pump to the surface and directed to a pressure well.

The prototype device comprises a pump at the mouth of a water well, a string of tubing, lowered into this well and connected by pipes to the pump and injection well.

The disadvantage of the prototype is that it is not designed to raise the water at the right temperature, and therefore the effectiveness of the effect of water through the injection well on the formation is reduced.

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M1ZHE21V 43/00

The objective of the utility model is to increase the efficiency of the impact on the reservoir with water supplied through injection wells.

The technical result of the implementation of the utility model is the ability to supply heated water of any desired temperature to the injection well.

The specified technical result is achieved by the fact that in the device for supplying heated water to the injection well, containing a pump at the mouth of the water well, a string of tubing, lowered into this well and connected by pipes to the pump and injection well, at the end of the tubing string in the water well, a jet pump with a packer is installed at a depth calculated by water temperature, the pump at the mouth is connected by a suction pipe to a column of pump and compressor pipes, and a discharge pump cutting - with the annulus of the water well, the inlet channel of the jet pump is connected to the annulus of the water well, and the outlet channel is connected to the internal volume of the tubing string.

The installation of a packer at the end of the string of tubing ensures that the annulus is cut off from the well, this reduces the pressure in the well by the pressure of the annular fluid column, and therefore reduces the cost of pump power.

The jet pump in the packer area captures hot water from the well beneath the packer and directs it up the tubing string. The pump performance does not depend on the depth of immersion, ensuring the reliability and efficiency of the device.

The device shown in the drawing, which shows:

1- heated water supplied to the injection well 2;

2- heated water at a depth in the water well 4; 5 - pump for pumping water 3;

6 - tubing for pumping water 3;

7-jet pump;

8- packer;

9- part of the pumped water;

10- annulus.

The device operates as follows. A water well 4 is equipped with a pump 5, a pipe string 6, a jet pump 7, a packer 8. A pipe string 6 is withdrawn from the water well 4 to the injection well 2. Then, the well 4 is filled with water to a level above pump 5. The pump 5 is turned on, taken from the pipes 6 part of the pumped water 9 and direct it into the annulus 10, and through it to the jet pump 7 and up the pipes 6.

Part of the pumped water 9, leaving the jet pump 7 at a high speed, captures the heated water 3 from under the packer 8 and transports the mixture of liquids 3 and 9 into the pipes, breaking the injection well 2. Pumping out part of the water 9 with the pump 5 from the pipes 6 does not affect the operation devices, since the volume of part of the water 9 is constantly circulating in the pump 5, the annulus 10, the jet pump 7, the pipes 6, again in the pump 5, etc., without increasing or decreasing.

Thus, the proposed device provides a stable, reliable and efficient supply of water of the required temperature to the injection wells.

Claims (1)

A device for supplying heated water to an injection well, comprising a pump at the mouth of a water well, a string of tubing lowered into the well and connected by pipes to the pump and injection well, characterized in that at the end of the tubing string in the water well calculated by the water temperature, a jet pump with a packer is installed, the pump at the mouth is connected by a suction pipe to a tubing string, and a discharge pipe is connected to a water intake annulus wells, the input channel of the jet pump is connected to the annulus of the water well, and the output channel is connected to the internal volume of the tubing string.