Multi-phase fluid measuring device for horizontal well

Abstract

The invention relates to a multi-phase fluid measuring device for a horizontal well. The multi-phase fluid measuring device comprises an underground visual imaging tester, a universal adapter, a releasing tool, an optical signal adapter, an electronic pressure gauge, a distributed optical fiber temperature sensor, an optical fiber connector, a coiled tubing connector and a central control unit; the underground visual imaging tester is used for measuring the output profile of underground fluid; the universal adapter is used for rotating the underground visual imaging tester; the releasing tool is connected with the universal adapter, and a weak point is arranged in the releasing tool; the optical signal adapter is used for converting a received electric signal into an optical signal and transmitting the optical signal through an optical fiber; the electronic pressure gauge is arranged below the optical signal adapter and is used for monitoring the flowing bottomhole pressure and transmitting monitored data to the optical signal adapter; the distributed optical fiber temperature sensor is used for measuring the temperature of a shaft and transmitting the measured temperature to the optical signal adapter; the optical fiber connector is connected with the optical signal adapter . The central control unit calculates injection-production parameters according to the flow velocity, the water holdup and the gas holdup to determine the water injection parameters of petroleum, the water injection efficiency is improved, and therefore the petroleum exploitation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum detection, in particular to a multiphase fluid measurement device for horizontal wells. Background technique [0002] Large-scale volume fracturing of horizontal wells with long horizontal sections is the most effective development method for low-permeability and ultra-low-permeability reservoirs such as tight oil and shale oil. The geological development and fracturing parameters of each fracturing section of a horizontal well are different, resulting in large differences in productivity of each fracturing section. In order to further optimize the fracturing process of horizontal wells and guide production, it is necessary to monitor the production profile of horizontal wells. At the same time, due to the complexity of the wellbore structure and completion method of the horizontal well, the flow pattern in the horizontal well is complex and changeable, and the production profile monitoring is ...

AI Technical Summary

Problems solved by technology

[0004] In summary, there is still a lack of a multiphase fluid measurement device for horizontal wells in the prior art that can measure flow velocity, water holdup, and gas holdup at the same time, and there is still a lack of a device that can measure the flow rate, water holdup, and gas holdup according to the flow rate, water holdup, and gas holdup. The water volume, water injection speed and water injection time can be adjusted differently, and the measuring device can improve the oil recovery efficiency while improving the monitoring ability of the device

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