Continuous measuring moisture content meter by underground low-frequency dielectric method

Abstract

The invention relates to a continuous measuring moisture content meter by an underground low-frequency dielectric method, and mainly solves the problem that the prior moisture content meter cannot be used with a current collector to finish continuous measurement of moisture content of an underground thin layer and a thin sandwich oil layer of chemical oil displacement and fracturing oil displacement. The moisture content meter is characterized in that a connector post (1) is fixed at the upper end of a mounting arm (16), and the lower end of the mounting arm (16) is connected with a metal seal cover (8) and a rubber seal cover (13) in turn; a measuring electrode (14) of which surface is provided with an electrode insulating bush (15) is fixed in the rubber seal cover (13), the upper section of the measuring electrode (14) is connected with a sealed core (10) of which outside diameter is provided with an insulating bush (11), the upper section of the sealed core (10) is matched with an inner hole of the metal seal cover (8), the top end of the sealed core (10) passes through an electrode lead (5) and is connected with an integrated measuring circuit module (4) and a signal output line (3) in turn, and the signal output line (3) is connected with the connector post (1). The continuous measuring moisture content meter can be arranged at any position of a logging instrument, and the resolution of extra-high moisture content of over 95 percent can reach 1 percent.

Description

technical field [0001] The present invention relates to the water cut measuring function nipple in the annular production profile continuous logging combined instrument of the oil field production well, in particular to a joint which can be installed in any part of the new production profile continuous logging combined instrument, and can carry out continuous A water cut meter for downhole low frequency dielectric measurement of water cut. Background technique [0002] Annular liquid production profile logging can provide various technical parameters such as the layered content of each phase fluid in each liquid production layer downhole, the change of fluid parameters and properties, and provide accurate analysis data for oil production. In the process of water flooding development in oilfields, a flow-collecting point-measurement annular production profile logging tool with integrated design of vortex flowmeter and water holdup meter is commonly used. Through stuck-point m...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing water cut meter cannot be matched with the current collector, the present invention provides a downhole low-frequency dielectric method for continuous measurement of water cut meter, which can be flexibly installed at any position of the logging instrument. Continuously measure the water content of the chemical production fluid of each oil layer, and the resolution of the ultra-high water content above 95% can reach 1%

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