Flow control device and method

Abstract

The invention relates to a flow control device used in the field of petroleum production. The flow control device comprises a first valve body which is provided with a fluid inlet, a second valve bodyconnected to the first valve body and provided with a plurality of fluid outlets, and a floating disk arranged between the first valve body and the second valve body, wherein a fluid passage communicating the fluid inlet with the fluid outlets is formed between the first valve body and the second valve body; and the floating disk is configured to float in the fluid passage so as to change the flow of fluid in the fluid passage. The flow control device can automatically adjust the size of the fluid passage according to different fluid properties, and has the characteristics of intelligent water control and oil increment, thereby effectively solving the problem of high water cut in oil wells and improving the recovery efficiency in oil reservoirs.

Description

technical field [0001] The invention relates to a flow control device and method, in particular to a water control and oil stabilization device used in the oil exploitation process. Background technique [0002] At present, most sandstone oilfields in my country have entered a period of ultra-high water cut as a whole, the remaining oil is highly dispersed, and the difficulty of recovery has increased significantly, and the situation of stabilizing oil and controlling water is very severe. There are many problems in the limited water control technology, especially the difficulty of water control in the later stage of horizontal wells, and there are serious heeling effects and unbalanced liquid supply phenomena, which lead to low-efficiency sections in horizontal well sections, which cannot be effectively and fully developed, and affect the oil field. recovery rate. The existing inflow control device can delay the outflow of water / gas, but due to its constant flow resistance...

AI Technical Summary

Problems solved by technology

There are many problems in the limited water control technology, especially the difficulty of water control in the later stage of horizontal wells, and there are serious heeling effects and unbalanced liquid supply phenomena, which lead to low-efficiency sections in horizontal well sections, which cannot be effectively and fully developed, and affect the oil field. recovery factor

The existing inflow control device can delay the outflow of water / gas, but due to its constant flow resistance rating (FRR), once a water / gas cone occurs, low-viscosity water / gas will occupy the entire wellbore and inhibit the flow of oil phase, resulting in a significant drop in oil well production

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