RU67655U1 - GAS BURNER INSTALLATION - Google Patents

Abstract

The invention relates to the oil and gas industry and can be used for various operations in wells, the implementation of which requires the supply of high pressure gas, the utilization of low pressure gas with its supply to gas transmission networks, etc. The objective of the invention is to increase the structural and functional reliability of the device. The gas booster installation includes a low-pressure gas source, a piston or plunger-type pump with a drive, a reciprocating pump capacity for the piston fluid, a block of tube batteries connected by common collectors in the upper and lower parts, while the lower manifold is connected via a drain line to the receiving reservoir of the piston fluid pump and through the discharge line of the pump - with the pump, and the upper manifold is connected to the gas discharge line and the line from the source of low-pressure gas. Battery tubes have a bias towards the connection with the downstream pipe, the gas discharge line, the line from the low-pressure gas source and the discharge line from the pump are equipped with check valves and pressure gauges, and the gas discharge line, the line from the low-pressure gas source and drain line are equipped with high-pressure valves from pipes of larger diameter than pipes of tube battery blocks.

Description

The invention relates to the oil and gas industry and can be used in well development, as well as in other operations in wells or other facilities, the implementation of which requires the use of high pressure gas.

Known installation, which is a compressor (for example, UKP-80), connected by a manifold to the well. Using a compressor, gas (air) is supplied to the well, which replaces the borehole fluid, due to which the downhole pressure is reduced and the flow of formation fluid is called up - well development / 1 /.

However, the pressure developed by the compressor may not be sufficient to develop deep wells. In addition, according to current safety rules in the oil and gas industry, the development of gas wells using air is prohibited.

Also known is a tubing installation including a piston or plunger type booster pump, the compressor chambers of which are connected to

a source of gas-liquid mixture or gas, a feed pump, the discharge line of which is connected to the receiving manifold of the booster pump, and a drive, the booster pump and feed pumps being installed on the transport base, and a separator-water separator / 2 / can be installed on the discharge manifold of the booster pump.

The disadvantages of the device include its relative complexity due to the need to use special devices to convert pumps into booster units, as well as the limited discharge pressure.

Closest to the described device is a gas booster installation, including a low-pressure gas source, a piston or plunger-type pump with a drive, a pump receiving tank for a piston fluid, a pressure vessel having an upper and lower liquid level sensors and connected at the lower part to the pump discharge line and through the drain line - with the pump intake line, and in the upper part - with the gas discharge lines and the line from the gas source, gas discharge line, discharge line from the pump and l Outlets from the gas source have check valves and manometers, and the gas discharge line, drain line and the line from the gas source are equipped with high pressure valves, in addition, the line from the gas source has a constriction device located after the check valve from the side of the pressure vessel, while the vessel high pressure is made in the form of parallel coils of pipes connected to the upper and lower parts by common collectors, the line from the gas source and the gas discharge line are connected to the upper manifold, and the drain the first line and the discharge line from the pump are connected to the lower manifold, the coils of the pressure vessel have a bias towards the downstream pipe, the pressure vessel in the upper and lower parts is equipped with vertical pipe sections with the location of the liquid level sensors in the interval, and the upper and the lower collectors are connected to the lines through the corresponding vertical pipe sections / 3 /.

The disadvantages of the device include the fact that in the manufacture of the installation, when the diameters of the pipes of the collectors and coils (batteries) are equal, the place of their connection becomes a weakened node, in addition, due to the small diameter of the collectors and the high speeds of the piston liquid and gas, there is the possibility of gas the receiving tank of the pump, and the piston fluid into the gas discharge line.

The objective of the invention is to increase the structural and functional reliability of the device.

This object is achieved in that in a gas booster installation comprising a low-pressure gas source, a piston or plunger-type pump with a drive, a pump receiving tank for piston fluid, a pressure vessel made in the form of parallel tube batteries connected by common collectors in the upper and lower parts, the lower manifold is connected through the drain line to the receiving tank of the pump for the piston fluid and through the discharge line of the pump to the pump, and the upper collector is connected to the gas pump the gas line, the line from the low-pressure gas source and the discharge line from the pump are equipped with check valves and manometers, and the gas discharge line, the line from the low-pressure gas source and the drain line is equipped with high-pressure valves, the collectors are made of pipes of a larger diameter than the pipes of tube battery blocks.

The drawing shows a process diagram of a gas booster installation. The installation includes: 1 - a tube battery unit (one battery is shown in the drawing), 2 - a lower collector, 3 - an upper collector, 4 - tees, 5 - a gas discharge line, 6 - a line from a low-pressure gas source, 7 - a discharge line from a pump , 8 - drain line, 9 - pump, 10 - receiving tank of the pump, 11, - non-return valves, 12 - high pressure valves, 13 - manometers.

The use of the described installation is as follows.

To the lower manifold 2 of the gas booster installation (GDU) through a tee 4, a piston or plunger type pump 9 is connected via a discharge line 7, as well as a pump receiving tank 10 through a drain line 8. A low-pressure gas source and a gas discharge are connected to the upper manifold 3 also through a tee 4 line 5 The line from the gas source 6, the gas discharge line 5 and the discharge line from the pump 7 are equipped with check valves 11 and pressure gauges 13, and lines 5, 6 and 8 with high pressure valves 12.

Close the high pressure valve 12 on the drain line 8, open the valve 12 on line 5, turn on the pump 9 and displace air from the entire structure of the tube battery pack 1 with piston liquid from the receiving tank 10 Then turn off the pump 9, connect the high-pressure gas consumer to the gas discharge line 5

(for example, a well), open taps 12 on the line from the low-pressure gas source and on the drain line, displacing the piston liquid with gas from the low-pressure gas source into the receiving tank 10, fill the tube battery unit with low-pressure gas from its source and close the tap on the drain line. After that, the pump 9 is turned on and the piston liquid from the receiving tank 10 is compressed and the gas is displaced from the tube battery unit 1 to the consumer of high-pressure gas. In the process of gas displacement, the check valve 11 on the line from the low-pressure gas source is closed, and the check valves on the gas discharge line and the discharge line from the pump are in the open state. After filling the tube battery pack and the upper manifold with piston fluid, the pump is turned off and the tap on the drain line is opened. When the pressure in the tube battery pack decreases, the check valves on the gas discharge line and discharge line from the pump close, the check valve on the line from the low-pressure gas source opens and the piston fluid is again forced into the receiving tank under pressure from the low-pressure gas source, and the tube battery block with collectors filled with a new portion of gas. By repeating the above operations, the required volume is pumped to the consumer of high-pressure gas with the achievement of the pressure of the required value.

The maximum pressure (P) developed at the installation is determined by the formula:

where is the ring. is the pressure in the source of low-pressure gas, n is the compression ratio of the gas in the installation.

The value of n is equal to the ratio of the volumes of gas per one tube battery at the beginning and end of the compression cycle, it structurally depends (directly proportional) mainly on the length of the battery tubes.

The productivity of the installation (the volume of gas per one cycle of its compression) depends on the volume of the entire design of the tube battery unit; it is directly proportional to the diameter of the pipes from which the batteries are made and their number.

When designing a gas booster installation, they are initially set by the pressure and productivity required for the work for which this installation is designed. At a given pressure, pipes (material, diameter, wall thickness) are selected for the manufacture of batteries and their length is determined by the known pressure in the low-pressure gas source and the required degree of gas compression. Based on a given installation performance and the volume of one battery, their required number is determined. In addition, the required pressure and performance

appropriate pump with drive is selected.

The pipes in the batteries are made with a slope towards connecting them to the downstream pipes in order to prevent erosion of the interface between the piston liquid and gas during their joint movement along the battery.

When carrying out any work in the well using the described gas booster unit, pumping units that are widely used in the oil and gas industry (for example, ЦА-320, ЦА-400, 2АН-500, 4АН-700, etc. can be used as a pump with a drive and a receiving tank) .).

To ensure the maneuverability of the installation, the entire design of the tube battery unit with the upper and lower collectors is mounted on a special frame or transport base (sleigh, trolley) using the necessary fasteners for the stability of the structure in working and transport conditions.

When operating the unit in low temperature conditions, a non-freezing solution, for example, diethylene glycol solution, sodium chloride or calcium chloride solution, can be used as piston fluid.

The described gas booster system allows you to:

- carry out various operations in wells, the implementation of which requires the supply of high-pressure gas, while achieving a gas pressure equal to the pressure developed by the pumping units used;

- to utilize low-pressure gases with their supply to gas transmission networks, etc.

Literature

1 Mineev B.P., Sidorov N.A. Practical Guide to Testing Wells M: Nedra, 1981, pp. 116-119.

2. Utility model of the Russian Federation No. 318, IPC 5: F04B 23/04, 06.21.93.

3. Utility model of the Russian Federation No. 13398, IPC 6: F04B 23/04, 04/10/2002.

Claims (1)

A gas booster system including a low-pressure gas source, a piston or plunger type pump with a drive, a reciprocating capacity of the pump for piston fluid, a pressure vessel made in the form of parallel tube batteries connected by common collectors in the upper and lower parts, while the lower collector is connected through a drain a line with the pump receiving tank for the piston fluid and through the pump discharge line to the pump, and the upper collector is connected to the gas discharge line and the line from the low source gas pipe, the battery pipes have a bias towards the connection with the downstream pipe, the gas discharge line, the line from the low-pressure gas source and the discharge line from the pump are equipped with check valves and manometers, and the gas discharge line, the line from the low-pressure gas source and drain line are equipped with high taps pressure, characterized in that the collector is made of pipes of a larger diameter than the pipe blocks of tube batteries.