Downhole repeater power supplying device

Abstract

The invention provides a downhole repeater power supplying device. The downhole repeater power supplying device is characterized in that firstly, the repeater power supplying device supplies a groundhigh-voltage direct-current power supply to a downhole repeater, then the ground high-voltage direct-current power supply is converted into a low-voltage direct-current power supply by the repeater tobe used by intelligent injection allocation devices, the downhole repeater is mounted on the upper part of the intelligent injection allocation device on the uppermost layer, the downhole repeater isconnected with a ground control system and the intelligent injection allocation devices, and the ground high-voltage direct-current power supply is firstly supplied to the downhole repeater and thenis converted into the low-voltage direct-current power supply by the repeater to be used by intelligent injection allocation devices. According to the downhole repeater power supplying device, the ground high-voltage direct-current power supply is firstly supplied to the downhole repeater and then converted into the low-voltage direct-current power supply by the repeater to be used by intelligentinjection allocation devices, and thus the long-term working reliability of an intelligent injection allocation device system is improved.

Description

technical field [0001] The invention belongs to the technical field of downhole instrument structures, and in particular relates to an downhole relay power supply device and method. Background technique [0002] After the oil field is exploited in the middle and later stages, the method of water injection or polymer flooding into the formation is generally used to ensure the crude oil production. The injection well layered measurement and adjustment technology has been promoted and implemented in oilfields for many years, and has played a significant role in improving the economic benefits of oilfields. Water injection wells are generally divided into multiple layers, and precise control of water injection in each layer is the key to ensuring output. [0003] At present, the oil field mainly uses a direct-reading seal inspection device to run into the well to check the seal of each layer, and a direct-reading water volume adjustment device to run into the well to adjust the...

AI Technical Summary

Problems solved by technology

The internal resistance of the long cable causes a large power loss. The direct power supply on the ground needs to increase the voltage, and the direct power supply from the ground high-voltage power supply is easy to cause damage to the downhole circuit. The downhole intelligent dispenser has a short life and low reliability.

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