| 摘要 |
The present invention relates to a method and a device to stabilize the production of oil wells. The device is used in a tubing of an oil well and it is intended to overcome the harmful effects provoked by the unstable flow of multiphase flows which are produced by some oil wells. In an oil well producing by means of continuous gas lift a device is installed into the tubing, said device being provided with a first portion, which provides a progressive constraint in the area for the passage of the flow coming from the reservoir, a second medium portion, located above the first portion, located above the first portion, which makes said area for the passage of the flow coming from the reservoir to be substantially constant at this point and smaller than the original area of the tubing, and a third upper portion, located above the second medium portion, which provokes a progressive widening in said area for the passage of the flow coming from the reservoir, until such area for the passage of the flow is again equal to the original area of the tubing. Such device can be located in front of the gas lift valve through which the injection gas is injected.
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