RU93876U1 - SUCTION AND INTAKE DEPTH INSTALLATION - Google Patents

Abstract

 1. Pressure-suction deep installation containing chambers, interconnected, pipelines, float valves, shut-off mechanisms, characterized in that the installation contains a sealed oil receiving tank equipped with a pump, gas compressors equipped with a receiver and a pressure reducing valve, storage chambers communicated between a vacuum pipeline, an oil supply pipeline and a compressed gas supply pipe, which is equipped with upper and lower oil supply valves, and between the pipeline oil supply valves The od is made with a gap. ! 2. Pressure-suction deep installation according to claim 1, characterized in that the housing of the storage chamber is made of metal, and the float is equipped with upper and lower magnets.

Description

The technical solution relates to the oil and gas industry and can be used in the operation of oil wells with the removal of associated gas.

Known downhole installations using several sections (compressors) intended for placement in the well. (SU, No. 1101583, F04B 47/02, publ. 04/20/1983), (SU, No. 861730, F04B 47/08, publ. 06/21/76), (SU, No. 105115, F04B 47/12, Е21B 43 / 00, published April 30, 1983). The limitation of these devices is low productivity in oil production from low-producing wells, the difficulty of producing highly viscous oil, with a high content of mechanical impurities and natural bitumen.

The closest to the claimed technical solution is a device for operating a waterlogged gas well according to the patent SU, No. 1209831, E21B 43/00, F04B 47/12, publ. 04/12/1983, containing concentrically installed casing and lifting pipe strings, a flow line connected to the annular space by means of an outlet with a valve, a working chamber made in the form of sections installed in series and hydraulically interconnected, a gas pipeline made in the form of two pipelines with a switch, alternately communicating sections of the working chamber with annular space and flow line, check ball and float valves, which are installed in each section of the working chamber. In this technical solution, a column of lifting pipes and a gas pipe are placed inside the working chamber, forming annular chambers with a column of lifting pipes in even and odd sections, at the bottom of each of which are installed a float valve communicating with the annular chamber with a column of lifting pipes, and a check ball valve, mounted above it. The device serves to drain the liquid during gas production, and cannot be used for the production of viscous oil.

The objective of the proposed technical solution is to create an installation for the extraction of oil and other liquid heterogeneous mixtures with advanced technical, operational and functional capabilities, as well as increasing productivity, improving reliability in oil production from low-production wells, providing the possibility of continuous pumping of oil with high viscosity or with increased content of mechanical impurities and natural bitumen.

The problem is solved due to the fact that the pressure-suction deep installation contains a sealed oil receiving tank equipped with a pump, a gas compressor equipped with a receiver and a pressure reducing valve, storage chambers communicated between each other by a vacuum pipe, an oil supply pipe and a compressed gas supply pipe which is equipped with a top and the lower oil supply valves, and between the oil supply valves the pipeline is made with a gap, the housing of the storage chamber is made of metal, and float k is equipped with upper and lower magnets.

The essence of the technical solution is illustrated by drawings where: Figure 1 is a schematic diagram of a pressure-suction deep installation.

The pressure-suction depth installation (Fig. 1) contains storage chambers 1, a vacuum line 2, a pipeline for supplying oil 3, a pipeline for supplying compressed gas 4, a pump 5, a sealed container 6, a gas compressor 7 and 8, a pressure reducing valve 9, a receiver 10 , connecting pipe 11, 12, oil return pipe 13, float 14, vacuum line valve 15, compressed gas supply valve 16, oil supply valve 17, oil supply valve 18, magnets 19, float-operated liquid level regulator 20, valves 21, 22, 23 and 24.

The pressure-suction deep installation contains storage chambers 1 in an amount of from one to N pieces, each of which is made the same. The storage chamber 1 is equipped with floats 14, a vacuum line valve 15, a compressed gas supply valve 16, an oil supply valve 17 and 18. A valve 15 is installed on the pipeline 2, the valve 16 is installed on the pipeline 4, two oil supply valves 17 and 18 are installed on the pipeline 3 , the valve 18 is installed at the bottom of the accumulation chamber 1, and the valve 17 is directly below the float 14, and between the valves 17 and 18, the pipe 3 is made with a gap. The tank 6 is equipped with a float regulator of the liquid level 20, is connected by its upper part to the accumulation chamber 1 by a pipe 2 and 3, the upper part of the tank 6 is also connected by a pipe 11 to the inlet of the gas compressor 7, the output of the gas compressor 7 is connected to the input of the receiver 10. One output of the receiver 10 is connected with the pipeline 4 of the storage chamber 1, and the second output of the receiver 10 is connected through a pressure reducing valve 9 to the inlet of the gas compressor 8. The lower part of the tank 6 is equipped with a pipe 12, which is connected to the input of the pump 5, and the output of the pump 5 in turn, it is connected to the oil recovery pipeline 13. Supply of the float 14 with magnets 19 increases the switching speed of the valves of the storage chambers 1 for pumping oil, and consequently, the productivity of the pressure-suction depth installation is further increased. To ensure preventive maintenance, pipelines 2, 3, 4, and 13 are equipped with shutoff valves, for example, valves 21, 22, 23, and 24.

The pressure-suction depth installation works as follows: A garland of storage chambers 1 is lowered into the well until the lower storage chamber 1 is completely immersed in oil. The storage chambers 1 are fastened together by pipelines 2, 3, 4, with an interval of, for example, 70 ÷ 80 m. A pump 5, for example a diaphragm, sealed container 6, two gas compressors 7 and 8, a pressure relief valve 9, and a receiver 10 are installed at a convenient distance from the well. . When you turn on the pump 5, the gas compressor 7 through the pipe 11 pumps the gases from the sealed container 6, while the gas compressor 7 compresses the pumped gases to 8 ÷ 10 kg / cm ² and pumps the sampled gases into the receiver 10. If there is an excess of gases or in the case of associated gas gas bleed It is supplied through a pressure reducing valve 9 to a gas compressor 8 and then fed to an oil return pipe 13 or to a gas manifold (not shown in the diagram) in this case, a pump 5, a sealed container 6, a gas compressor 7 and a receiver 10 additionally perform the functions of a gas separator. The storage chamber 1, due to the created vacuum by the gas compressor 7 and the external liquid column, is filled through the oil supply valve 18. As the chamber 1 is filled, the float 14, held back by the lower magnet 19, is immersed. There comes a time when the buoyancy force begins to prevail over the holding force of the magnet 19. The float 14 abruptly breaks up, closes the valve 15, opens the valve 16, and compressed gas from the receiver 10 through the pipe 4 through the valve 16 is supplied to the accumulation chamber 1. Valve 18 under the action the own mass of gas-compressed liquid closes, valve 17 opens, and oil is supplied through pipeline 3 through valve 18 to the next storage chamber 1, and then to the next to the highest storage chamber 1. From the upper storage chamber 1 eft enters the airtight container 6. As the accumulation of oil in the vessel 6, it is pumped through conduit 12 membrane pump 5 to the oil return conduit 13 to the destination. When filling the tank 6 to a certain level, the float regulator of the liquid level 23, overlaps the pipeline 11. As the emptying chamber 1 is emptied, the float 14 is held in the upper position, and as soon as the gravity of the float 14 exceeds the holding force of the upper magnet 19, the float 14 breaks and rushes down, valve 16 closes and valve 15 opens. The compressed gas from the storage chamber 1 rushes into the pipeline 2. The filling of the storage chamber 1 begins, and the cycle repeats. Thus, the pumping (lifting) of oil from one storage chamber 1 to another is carried out under the influence of compressed gas, the compressed gas in the receiver 10 is constantly ready to flow into the storage chambers 1 through valves 16, into the discharged space to a height of 70 ÷ 80 meters.

The set of features is new and allows pumping oil with high viscosity, improving reliability during oil production from low-producing wells, and providing the possibility of continuous pumping of oil with high viscosity or natural bitumen. Moreover, in the nodes of the storage chambers 1, pump 5, gas compressors 7 and 8, and receiver 10, in contact with the pumped product, there are no pair of pairs. In addition, there is no reaction to the “dry” mode of operation or a reaction to an increased content of solids.

Claims (2)

1. Pressure-suction deep installation containing chambers, interconnected, pipelines, float valves, shut-off mechanisms, characterized in that the installation contains a sealed oil receiving tank equipped with a pump, gas compressors equipped with a receiver and a pressure reducing valve, storage chambers communicated between a vacuum pipeline, an oil supply pipeline and a compressed gas supply pipe, which is equipped with upper and lower oil supply valves, and between the pipeline oil supply valves The od is made with a gap. 2. Pressure-suction deep installation according to claim 1, characterized in that the housing of the storage chamber is made of metal, and the float is equipped with upper and lower magnets.