Plant for lifting gas-containing well fluid

FIELD: oil industry.

SUBSTANCE: plant comprises pump chamber with sucking and pressure passages, pressure pipe with sucking valve that connects the space downstream of the pipe with the space of the pump chamber, and cable. The top section of the pump chamber made of cupola for spraying and burning fuel receives batcher of oxygen and unit for controllable frequency of igniting. One of the faces of the pressure pipe is sealed hermetically. The pump chamber together with the batcher and igniting unit can be mounted inside and/or outside the pressure pipe. The gas of the fluid is used in the pump chamber as a fuel.

EFFECT: enhanced reliability and reduced cost.

5 cl, 1 dwg

 

The invention relates to the oil industry, namely the setting for lifting gas reservoir fluid (BPH) from the well.

Known device for lifting liquids from a well containing a lifting pipe with the suction pipe and concentric with the duct connected to a source of compressed air. In the suction pipe coaxially last set of the cavitation element, the back side of which is communicated with the atmosphere through the tube. Into the well through the duct serves the compressed air, which mixes with the liquid, forms a lifting pipe ridculously mixture rising to the surface. On the surface of the mixture emit the air, and the liquid collected in the reservoir (USSR Author's certificate No. 1488584, CL F 04 F 1/20, publ. bull. No. 23, 1989).

The disadvantage of this setup is the low efficiency and reliability due to the large consumption of compressed air and considerable complexity of capital equipment.

Closest to the invention is an installation for lifting gas reservoir fluid from a well, see USSR author's certificate No. 1193293, CL F 04 47/02, publ. bull. No. 43, 1985.

This installation for lifting BPH from wells is currently the most used in the oil industry and contains a pump rod connected to the Onna pumping pipes, in the cylinder which is placed a plunger. Through the rod string, the machine-rocking chair and gearbox plunger associated with the actuator, which is connected to the power supply. On the column of the pumping pipe check valve, indicating the well annulus with the cavity of the column pumping pipes. On the column of the pumping pipe below the check valve is additionally installed relief valve with a spring-loaded locking element and grooved outlet.

The disadvantage of this setup is the low efficiency due to the significant capital expenditures and costs against paraffins in lifting the pipe, which will lead to low efficiency of the reservoir, and low reliability due to its complexity and the large number of mechanical elements.

The objective of the invention is to create an installation that would allow to raise the liquid from the well at small energy and material costs.

The technical result is to increase the impact of the formation and performance of oil and water, as heat-, gas - and hydrodynamic effects will eliminate supervidovaya as the bottom zone and the discharge pipe, the simplification process will increase the reliability, and the use to lift the fluid energy of combustion of the gas will reduce the major capital and material costs.

This technical result is achieved by the fact that the installation for lifting gas reservoir fluid from a well includes a pumping chamber with intake and discharge valves, the discharge pipe chamber connected with the cavity of the pumping chamber and the cable in the upper part of the pumping chamber is made in the form of a dome for fuel atomization and combustion, a dispenser oxidizer fuel, which is used as the gas reservoir fluid, and the ignition unit with controlled ignition frequency. In addition, one of the ends of the discharge tube is sealed. A pump chamber with pump and ignition module can be installed inside and/or outside the discharge tube. In the pump chamber in use as a fuel gas reservoir fluid. Dispenser oxidant reported using the hose with the atmosphere.

Figure 1 shows schematically the proposed installation for lifting gas reservoir fluid from a well located with a pumping chamber within a pressure tube. Figure 2 shows the installation of stop pumping chamber outside the discharge pipe.

Installation (figures 1 and 2) contains the discharge tube 1, the hose oxidizer 2, associated with the dispenser 3, the ignition unit 4, the spout 3 and the ignition unit 4 are located in the upper part of the pumping chamber 5 in anywaysi valve 6 and the discharge valve 7, the ignition unit 4 through the cable 8 is connected to the ground control station (not shown), the casing 9. The annulus through the intake valve 6 pressure pipe 1 and the pumping chamber 5 is in communication with the internal cavity.

The device operates as follows.

For pumping gas reservoir fluid from the well it is placed in the discharge pipe 1, which can be used one-piece flexible tube. Inside (1) or outside (figure 2) pressure pipe 1 is installed pumping chamber 5 with 6 suction and discharge 7 of the vehicle. The upper part of the pumping chamber 5, where the atomization of the fuel and its combustion is performed in the form of a dome, the volume of which is sufficient to create a pressure that raises the liquid. Here is the dispenser with 3 hose 2 of the supply of oxidant, the ignition unit 4 with controlled ignition frequency and the cable 8. Figure 1 shows the installation of the pumping chamber 5, with the spout 3 and the ignition unit 4 inside the discharge tube 1, the lower end of which is closed. Figure 2 presents the installation where the pump chamber 5 with the spout 3 and the ignition unit 4 is located outside the discharge tube 1. These plants are identical. Gassy reservoir fluid enters the pumping chamber 5 through the open suction valve 6 located in the top of the her part of the pumping chamber 5 and which is a common valve to the discharge pipe 1. At this time, the discharge valve 7 located in the lower part of the pumping chamber 5 is closed. The chamber 5 is filled with gas reservoir fluid. Gas, as a more lightweight and agile, rushes in the upper part of the chamber 5 and the reservoir fluid, the heavier the product, enters the lower part of the chamber. As filling of the chamber 5 by the liquid and gas automatically to the spout 3 and the ignition unit 4 the command to the injection of the oxidant in the accumulated gas and ignition of this mixture. As the oxidant used atmospheric air fed to the dispenser using the hose 2. As the ignition module used automotive thyristor system, principle of operation and design of its elements can be found on page 448 in the book "Automotive Handbook. - M.: JSC KZI "driving", 2002, - 896 S.". After ignition in the upper part of the pumping chamber 5 a mixture of the fuel with the oxidizer, the pressure in the upper part of the chamber 5 is intensively increased. Under the action of high-pressure intake valve 6 is closed and the discharge valve 7 is opened, and a portion of the gas reservoir fluid is ejected from the chamber 5 to the discharge tube 1. Simultaneously, due to the inertia of the liquid column in the lower part of the pumping chamber 5 and the discharge pipe 1 that is displaced when a sudden increase of gas pressure in the chamber,an area of low pressure, which leads to the closing of the injection valve 7, the opening of the suction valve 6 and the arrival of a new portion of the annulus, gassy reservoir fluid. The annulus located between the injection casing 1 and 9 tubes. Then the cycle of operation is repeated. The frequency of cycles depends on the specific system design and mode of reservoir performance. The ground portion of the plant (figure 1, 2 is not shown) is a conventional Delta valves and control station (see p.120 in the book. Ants V.M. Reference wizard oil. M "Nedra", 1975, s).

The combustion of gas in the pump chamber 5, there are the following processes.

Significantly increases the temperature of the gas reservoir fluid, therefore, the temperature rises, affecting surrounding the well producing formation. All this leads to the elimination of supervisionary as the bottom zone and the discharge pipe, which greatly increases the return reservoir and the performance of oil and water.

Gaseous products of the explosion contribute to increase the lifting force when lifting reservoir fluid.

Hydrodynamic effects and waves generated by the explosive nature of the combustion, also have a positive effect on the reservoir, increasing his returns.

The absence of p is Unger in the proposed installation can be used instead of a column composite tubing one-piece flexible discharge pipe, it will increase the performance tripping operation when the service is installed.

Thus, the proposed installation for lifting gas reservoir fluid easier known up to the present time, has high reliability due to the absence in it of complex mechanical structures. In addition, allows to significantly improve the efficiency of the lifting gas reservoir fluid by reducing capital costs, maintenance costs and energy costs, so as to lift the fluid is used, the energy of combustion of the gas, which is currently almost released into the atmosphere, causing irreparable damage to the environment.

1. Installation for lifting gas reservoir fluid from a well, comprising pumping chamber with suction and discharge valves and discharge pipe, a chamber connected with the cavity of the pumping chamber, and a cable, characterized in that the upper part of the pumping chamber is made in the form of a dome for fuel atomization and combustion, a dispenser oxidizer fuel, which is used as the gas reservoir fluid, and the ignition unit with controlled ignition frequency.

2. Installation according to claim 1, wherein one of the ends of the discharge tube is sealed.

3. Installation according to claim 1, distinguishing the I, what a pump chamber with pump and ignition module installed inside the discharge pipe.

4. Installation according to claim 1, characterized in that the pump chamber with pump and ignition module mounted outside the pressure tube.

5. Installation according to claim 1, characterized in that the dispenser oxidant reported using the hose with the atmosphere.



 

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