| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: invention group refers to operation of an underground well and in particular to variants of system of control of fluid mix flow from geologic bed to a well or from a well to geologic bed. Such control for example provides for minimising water and/or gas recovery and maximising oil and/or gas recovery with balancing the recovery between zones. The essence of the invention by one of the variants: The system of variable flow resistance contains the first flowing channel and the first network from one or few take-out channels crossing the first flowing channel. At that, the invention provides for possibility of taking part of fluid mix from the first flowing channel to the first network of take-out channels and its variation, depending at least of viscosity of fluid mix or flow rate of fluid mix in flowing channel. The first network of take-out channels is capable of directing fluid mix to the first control channel of a flow path switch, which is able to select one of a range of flow paths, by which after switching the prevailing portion of fluid passes, at least partially depending on proportion of fluid mix taken out to the first control channel.EFFECT: improving operating reliability of a system owing to its self-adjustment.16 cl, 10 dwg |
