In-pipeline non-intrusive temperature measuring system for thickened oil exploitation

Abstract

The invention discloses a non-intrusive temperature measuring system in a pipeline for thickened oil exploitation, which comprises a hardware system and a software system, and is characterized in that the hardware system comprises a single-chip microcomputer minimum system, a temperature detection module, an industrial transmitting module, a data interaction module, a power supply module and an isolation circuit; the software system comprises a single-chip microcomputer main program, a temperature detection program, a data processing program, an industrial transmitting program, a data interaction program and a temperature conversion program. The temperature detection module is independently supplied with power through the isolation circuit, the influence of noise on the temperature measurement circuit is reduced, the temperature measurement precision is prevented from being influenced by a system power supply, the working current of a hardware circuit is reduced by selecting a low-power-consumption component, the low-cost requirement is met, and the temperature detection error is reduced by performing sliding mean filtering processing on data. The corresponding relation between the temperature and the measured resistance value is obtained through fitting of the least square method, temperature calculation is facilitated, and compared with a traditional on-site temperature mode, the detection efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of heavy oil exploitation, in particular to a non-invasive temperature measurement system in a pipeline for heavy oil exploitation. Background technique [0002] According to the oil and gas industry standard SY / T 6169-1995 "Oil Reservoir Classification", crude oil with a viscosity greater than 50mPa·s under formation conditions is called heavy oil, and the composition of heavy oil is complex. The difference between heavy oil and crude oil is biological The degree of degradation, the degree of degradation of heavy oil is much higher than that of ordinary crude oil. Due to its high viscosity, heavy oil is very difficult to mine and transport. In the process of mining heavy oil, the most important thing is to reduce the viscosity of heavy oil. And to enhance fluidity, generally speaking, heavy oil recovery technology can be divided into thermal recovery and cold recovery. The main methods and ideas are to impr...

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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to propose a non-invasive temperature measurement system in the pipeline for heavy oil development, which can solve the problem of poor on-site temperature detection efficiency, and solve the problem of high power consumption, complicated installation process and potential safety hazards of the traditional temperature measurement system. Solve the problem that foreign non-invasive temperature transmitters are too expensive to be applied on a large scale

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