Abstract
In the process of oil exploitation, the water level of an oil well can be predicted and the position of reservoir can be estimated by measuring the water content of crude oil, with reference for the automatic production of high efficiency in the oil field. In this paper, a visual measuring method for water content of crude oil is proposed. The oil and water in crude oil samples were separated by centrifugation, distillation or electric dehydration, and a water–oil layered mixture was formed according to the unequal densities. Then the volume ratio of water and oil was analyzed by digital image processing, and the water content and oil content was able to be calculated. A new method for measuring water content of crude oil based on IGAVD (image grayscale accumulated value difference) is proposed, which overcomes the uncertainty caused by environmental illumination and improves the measurement accuracy. In order to verify the effectiveness of the algorithm, a miniaturization and low-cost system prototype was developed. The experimental results show that the average power consumption is about 165 mW and the measuring error is less than 1.0%. At the same time, the real-time and remote transmission about measurement results can be realized.
Highlights
Crude oil moisture content is a vital parameter in the petroleum exploitation and petrochemical industries, and it has significant reference value to crude oil processing, storage, transportation, and pricing
Overviewscheme on measuring the water content in crude oil based on computer vision The technical presented in this paper is on shown in Figure and can be expressed ascomputer follows
The technical scheme measuring the1water content in crude oil based on vision order to promote the separation and water molecules, the crude samples were treated byFirst, electric presented in this paper is shownofinoilFigure
Summary
Crude oil moisture content is a vital parameter in the petroleum exploitation and petrochemical industries, and it has significant reference value to crude oil processing, storage, transportation, and pricing. By measuring the water content of crude oil, the position of reservoir can be estimated in time [1,2,3]. Chang et al studied a method of measuring water content in crude oil based on ultra-short-wave technology in 2008 [9]. In 2008, Zhao et al proposed spectral absorption method to measure water content of crude oil [10]. A high-resolution capacitive sensing system was proposed by Aslam et al in order to measure water content of crude oil in 2014 [11,12]. The methods mentioned above are online measuring methods They can measure water content accurately in crude oil samples in real and short time and reduce the labor intensity in the production process. They have stringent requirements on the measuring environment and devices, such as the alkanes and hydrocarbons in crude oil, and the temperature of the environment has a negative influence on the measurement results
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