Well-head hydraulic signal generating device and operating method thereof

Abstract

The invention relates to a well-head hydraulic signal generating device and an operating method thereof. The well-head hydraulic signal generating device is characterized by comprising a hydraulic oil source, power units, overflow valve banks and pressure test systems. The hydraulic oil source comprises an oil tank, wherein, the side wall of the oil tank is equipped with a temperature sensor and a liquid level sensor, the oil tank is internally equipped with an oil pipeline with a hydraulic oil filter, and the other end of the oil pipeline is connected with the power units; each power unit comprises a hydraulic pump driven by a variable frequency motor, wherein, an input terminal of the hydraulic pump is connected with the oil pipeline, an output terminal of the hydraulic pump is connected with a hydraulic signal pipeline, and the hydraulic signal pipeline is sequentially equipped with a check valve, a pipeline oil filter and a pipeline stop valve; and each overflow valve bank comprises an overflow pipeline, wherein, the overflow pipeline is connected on the hydraulic signal pipeline between the corresponding check valve and pipeline oil filter, an output terminal of the overflow pipeline is connected with a two-position two-way solenoid directional valve and a pilot overflow valve in parallel, an output terminal of the pilot overflow valve is connected with an H-type two-position four-way solenoid directional valve, and an output terminal of the two-position four-way solenoid directional valve is connected with two overflow valves in parallel.

Description

technical field [0001] The present invention relates to a signal generating device and its operating method, in particular to a wellhead hydraulic signal generating device that can provide hydraulic power and control signals for downhole hydraulic control tools, and cooperate with downhole hydraulic decoders to realize various working states of downhole tools. its method of operation. Background technique [0002] Intelligent well completion technology can control the production of multiple oil and gas layers downhole on the ground by obtaining downhole production layer parameters. At present, ground hydraulic power is mainly used to transmit ground power to the downhole through hydraulic pipelines to realize the control of downhole actuators, such as sliding sleeves. If only oil and gas layers are switched on and off, the oil and gas layer can be switched on and off by driving the downhole sliding sleeve through ground pressure, or the target layer can be switched on and o...

AI Technical Summary

Problems solved by technology

However, it is difficult to control the opening degree of the downhole target layer only by simple ground pressure; it is even more inconvenient to adopt conventional production adjustment measures such as tubing / steel wire operations, and may need to stop production operations, affecting normal production

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