Single-core power supply underground power supply redundancy design system and method for logging

Abstract

The invention relates to a single-core power supply underground power supply redundancy design system and method for logging. The single-core power supply underground power supply redundancy design system comprises at least two identical power supply circuit A and power supply circuit B, wherein the power supply circuit A and the power supply circuit B are connected through an isolation processingcircuit, and the power supply circuit A and the power supply circuit B use a same single-core cable for power supply, so that when a core wire of the cable is positive and a shell is negative, the power supply circuit A normally works to supply power to an underground non-power supply circuit; and when the core wire is negative and the shell is positive, the power supply circuit B normally worksto supply power to the underground non-power supply circuit. The single-core power supply underground power supply redundancy design system and method have the advantages that the realization is simple, the service life of an underground power supply for logging can be doubled under the condition that the cost is slightly increased, and the long-term reliability of an underground power supply circuit is effectively improved; and the problem of insufficient service life of a power supply circuit of an intelligent water distributor caused by a high temperature environment is effectively solved.

Description

technical field [0001] The invention relates to a redundant design system and method for downhole power supply of a single-core power supply for well logging. Background technique [0002] Well logging instruments are commonly used equipment in the process of oilfield exploitation. Through the reasonable use of logging instruments, the production efficiency can be effectively improved, the unreasonable energy consumption can be reduced, and high economic benefits can be brought to the oilfield production side. [0003] There are many types of logging instruments, one of which is a permanent logging instrument; this type of instrument is powered by a single-core cable, and goes downhole with the string through operation; the installation or replacement process during its use is expensive; therefore, the oil field Users have higher requirements on the long-term reliability and service life of this type of logging equipment. In addition, the logging tool works downhole, and t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a redundant design system of single-core power supply downhole power supply for well logging, which effectively solves the problem of insufficient service life of the power supply circuit of the intelligent water distributor caused by the high temperature environment

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