RU185507U1 - DEVICE FOR COLLECTING OIL WELL PRODUCTS WITH HIGH GAS FACTOR - Google Patents

Abstract

The utility model relates to the oil and gas industry, in particular to devices for collecting oil and gas.

A device for collecting oil well products with a high gas factor includes an ejector, the entrance to the active nozzle of which is connected to the discharge pipe of the pump, the entrance to the rarefaction chamber to the annulus of the well, and the exit to the production line. The product withdrawal line is equipped with a constriction connected with the annulus of the well by a bypass pipe.

The proposed device for collecting oil well products with a high gas factor makes it easy and without long stops to install, adjust and repair the ejector due to the presence of the bypass pipe and quick-detachable connections of the ejector. 3 ill.

Description

Device for collecting oil wells with a high gas factor

The utility model relates to the oil and gas industry, in particular to devices for collecting oil and gas.

The well-known "System for collecting and transporting oil well products" (patent RU No. 2236639, F17D 1/00, publ. September 20, 2004 Bull. No. 26), including a network of prefabricated pipelines from wells, a pressure pipeline to an oil treatment plant, an ejector and a pump, mounted on the tubing and placed in the sump, which is equipped with a pipe with a plug at the lower end and wellhead equipment at the upper end, the outlet of the annular space of the sump and the linear outlet of the wellhead equipment in communication with the internal cavity of the tubing loss, characterized in that the system is additionally equipped with a separation unit having taps of gas-oil and water-oil separation products, an ejector is placed between the network of prefabricated pipelines and the pressure pipe, while the pipe for introducing the transported liquid into the ejector is connected to the network of prefabricated pipelines, the ejector nozzle is through a linear outlet of the wellhead the equipment is connected with the cavity of the tubing, and the ejector diffuser is connected to the inlet of the separation unit, and the outlet of the gas and oil separation products is soy dinene with a pressure pipe, and the discharge of oil-water separation products is connected via a bypass pipe to the outlet of the annular space of the sump, while the system contains an electric centrifugal pump as a pump.

The disadvantages of this system are the complexity of the design and, as a consequence, the high cost, the complexity of installation, adjustment and repair.

The closest in technical essence is the "Installation for the operation of an oil well" (patent PM RU No. 28375, E21B 43/00, publ. March 20, 2003 Bull. No. 8), containing a separator with lines for the removal of liquid and gaseous media, a pump, a suction pipe which is connected to the drain line of the liquid medium, and an ejector, the active nozzle of which is connected to the discharge pipe of the pump, passive to the source of the pumped medium and the output to the separator, characterized in that a gas ejector is installed in the drain line of the gaseous medium.

The disadvantages of this installation are the inability to install, adjust and repair without stopping for the entire period of these operations of the producing well.

The technical task of the proposed utility model is to create a device for collecting oil well products with a high gas factor, which makes it possible to install, adjust and repair the ejector simply and without long stops due to the presence of the bypass pipe and quick-detachable connections of the ejector.

This problem is solved by a device for collecting oil well products with a high gas factor, including an ejector, the entrance to the active nozzle of which is connected to the discharge pipe of the pump, the entrance to the passive nozzle is connected to the annulus of the well, and the output is to the production outlet line, while the ejector is configured to replacement with a technological branch pipe of an appropriate design using quick-connects.

What is new is that the product withdrawal line is equipped with a constriction communicated with the annulus of the well by the bypass pipe.

In FIG. 1 shows a diagram of a device.

In FIG. 2 is a diagram of a device during repair or replacement.

In FIG. 3 is a view A in FIG. 2 in longitudinal section.

A device for collecting oil well products 1 (Fig. 1) with a high gas factor includes an ejector 2, the inlet 3 of the active nozzle (not shown) of which is connected to the discharge pipe 4 of the pump (not shown), and the inlet 5 of the rarefaction chamber 6 is connected to the annulus of the well 1 by the nozzle 7, and the output 8 to the production line 9. The inputs 3 and 5 and the output 8 of the ejector 2 are equipped with quick-detachable connections 10 (Fig. 2). The annulus of the well 1 (Fig. 1) is also indicated by the bypass pipe 11 (Fig. 3) with a production line 9 in the place of its narrowing 12. In this case, the ejector 2 is made with the possibility of replacing the technological pipe 13 (Fig. 2) of the corresponding design using quick-detachable joints 10. The regulation of fluid and gas flows is carried out by valves 14, 15, 16, 17 and 18. The restriction 12 (Fig. 3) can be performed by introducing the bypass pipe 11 into the inside, an internal insert (not shown), a restriction at this point production lines 9 (not shown) or the like.

The device operates as follows.

The production of oil well 1 (Fig. 1) under the action of a pump lowered into the well 1, from the injection pipe 4 is fed through the inlet 3 into the active nozzle, a high-speed production stream from which creates a vacuum in the chamber 6 of the ejector 2, where the extracted from the product is intensively sucked through the pipe 7 and the inlet 5 gas from the annulus of the well 1 and is mixed with the products of the well 1, leaving through outlet 8 along the discharge line 9 to the collection point (not shown). In this case, the valves 14 (Fig. 2), 15, 16 and 17 are open, and the valve 18 is closed. In case of failure of the ejector 2 (Fig. 1) or clogging for its replacement or maintenance, all valves 14 (Fig. 2), 15, 16, 17, and 18 are moved to the closed position, the ejector 2 is disconnected via quick-release couplings 10 (Fig. 1). 1) and connect through connections 10 (Fig. 2) the corresponding process pipe 13. Then, at the time of repair, only valves 14, 15, 17 and 18 are opened and continue to work. At the point of narrowing 12 (Fig. 3), the flow rate of the products from well 1 increases, and gas from the annulus of the well 1 (Fig. 1) will be sucked through the bypass pipe 11 into the product exhaust line 9, albeit not as intensively as the ejector 2, but during repair and maintenance of the ejector 2 will not allow a large amount of gas to accumulate in the annulus of the well 1, greatly affecting the operation of the submersible pump. After preparation of the ejector 2, all valves 14 (Fig. 2), 15, 16, 17, and 18 are moved to the closed position, the process pipe 13 is disconnected by quick connectors 10 and the ejector 2 is connected via connections 10 (Fig. 1), only the valves 14 are opened (Fig. 2), 15, 16 and 17 continue to operate normally, sucking gas from the annulus of the well 1 (Fig. 1) with an ejector 2.

The proposed device for collecting oil well products with a high gas factor makes it easy and without long stops to install, adjust and repair the ejector due to the presence of the bypass pipe and quick-detachable connections of the ejector.

Claims (1)

A device for collecting oil well products with a high gas factor, including an ejector, the entrance to the active nozzle of which is connected to the discharge pipe of the pump, the entrance to the rarefaction chamber to the annulus of the well, and the output to the exhaust line, characterized in that the exhaust line is equipped the restriction communicated with the annulus of the well bypass pipe.

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