Sieve tube water control device

Abstract

The invention relates to the technical field of horizontal well oil extraction water control tools and discloses a sieve tube water control device. The sieve tube water control device comprises an oil collecting water control tube, a connecting core tube and a filtering device, wherein an oil collecting tube cavity is arranged inside the oil collecting water control tube, the lower end of the oilcollecting water control tube is provided with a water control liquid inlet, the oil collecting water control tube is internally provided with an oil collecting channel which can be used for communicating the water control liquid inlet with the oil collecting tube cavity, an oil collecting water control valve which can lead petroleum to pass through and water to be blocked is installed on the oilcollecting channel, the upper part of a cavity wall of the oil collecting tube cavity is provided with an upper connecting screw thread, and the lower part of the cavity wall of the oil collecting tube cavity is provided with a core tube fixing screw thread. The invention has reasonable and compact structure and convenient use; and the on-off state of the oil collecting channel is controlled through a water expansion rubber cylinder in the oil collecting water control valve. When a water cone forms and begins to flow water, the water expansion rubber cylinder expands and breaks the oil collecting channel, thereby being capable of completely stopping the generation of the water cone. The invention has the characteristics of safety and reliability as well as simplicity, convenience and highefficiency.

Description

technical field [0001] The invention relates to the technical field of oil production and water control tools for horizontal wells, and relates to a screen tube water control device. Background technique [0002] At present, during the production process of horizontal wells, due to the different suction pressures on the horizontal section, the heterogeneity of the primary and secondary formations, the difference in fluid mobility and other reasons, a dominant channel of water flow is formed in the formation, resulting in water Cone, water channeling, and water ridge advance have seriously affected the oil production of oil wells. However, the water control tools used in the existing horizontal well production have the following deficiencies in actual use: they can only delay the formation of water cones, but cannot completely eliminate them. Contents of the invention [0003] The invention provides a screen tube water control device, which solves the problem that the water...

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Problems solved by technology

[0003] The present invention provides a screen water control device, which solves the problem that the water control tools used in the existing horizontal well oil production can only delay the formation of water cones, but cannot completely eliminate them. the problems it generates

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