Automatic separation of oil and water inflow controller

Abstract

The invention discloses a controller for automatic separation of oil and water. The device is mainly composed of two parts, the valve base (1) and the valve cover (2). The valve base (1) is provided with an inflow channel (3) to accelerate the swirling chamber (4) to accelerate the fluid. Under the action of the diversion groove (5), the fluid enters the swirling separation chamber (9) tangentially, and The water and oil are introduced into the water swirl chamber (7) and the oil flow chamber (12) enclosed by the shunt baffle 10 through the water guide groove (6) and the oil guide groove (11),and finally the oil and water are respectively discharged from the water outlet (8). The oil outlet (13) flows out. The device can automatically separate oil and water, and increase the pressure dropof the water phase through multiple resistance increasing structures to restrict the flow of the water phase. For the wells that have been seen, it can limit water production, achieve the purpose ofstabilizing oil and controlling water, and improve the life of oil wells. At the same time, the device does not have movable parts and can be applied to sand wells.

Description

technical field [0001] The invention belongs to the field of oil and gas field development, and in particular relates to an oil-water automatic separation inflow controller. Background technique [0002] Due to the influence of natural factors such as reservoir heterogeneity, reservoir anisotropy and natural fractures, and artificial factors such as workover, well completion and injection and production. During the development of reservoirs, the problem of water ridges is often prone to occur. This problem shortens the water-free recovery period of the reservoir, accelerates the rise of water cut in the entire well, and causes water breakthrough. However, it is very difficult to shut off water after water breakthrough. Seriously affecting the play of the advantages of oil well productivity and the realization of the comprehensive benefits of exploitation, it has become the key point restricting the efficient development of bottom water reservoirs. At present, common downhol...

AI Technical Summary

Problems solved by technology

During the development of reservoirs, the problem of water ridges is often prone to occur. This problem shortens the water-free recovery period of the reservoir, accelerates the rise of water cut in the entire well, and causes water breakthrough. However, it is very difficult to shut off water after water breakthrough. Seriously affecting the production of oil wells and the realization of comprehensive benefits of production, it has become the key to restricting the efficient development of bottom water reservoirs

At present, common downhole water control tools include two types of inflow controllers (ICD and AICD) and ICV, etc. Among them, ICV needs to be installed with optical fibers, sensors, etc., and the cost of tools is relatively high

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