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System for measuring oil content in water in petroleum production process

A production process, oil content technology, applied in the direction of color/spectral characteristic measurement, etc.

Pending Publication Date: 2020-07-07
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the existing technical defects, use the different optical and physical properties of oil and water, and adopt an optical method to conveniently realize the measurement of oil content in complex fluid conditions

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  • System for measuring oil content in water in petroleum production process

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Embodiment Construction

[0040] An infrared light source with a constant current of 880nm is used to emit incident light, which is transformed into approximately parallel light through a lens, and then enters the fluid to be tested through an anti-oil coating. After the fluid is stable, the background BKIR is saved. The reference beam uses 380nm UV light to record pure water fluid. Among them, the background value BKUV, at this time, the IR value reflects the situation of the particles in the fluid (when the particles are 0), it reflects the situation of oil in the fluid; add an appropriate amount of suspended matter, stir well, so that the suspended matter is evenly distributed in the fluid Among them, record the IR0, UV0 at this time; then replace the fluid in the optical cell, fill the optical cell with 100% oil, obtain the IRf, UVf at this time, and obtain the basic parameters through the above steps, you can get k1, K2, K3 value. When the absolute value change of ΔUV(UV-UV0) is greater than a cer...

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Abstract

The invention discloses a system for measuring the content of oil in water in a petroleum production process. The system comprises a first reference light beam, a second reference light beam and a detector, and further comprises a module for tracking the content of oil in water, and the tracking module monitors the content of oil in water by adopting the following steps: S1, carrying out quantitative analysis by utilizing scattering absorption of the content of oil in water of the first reference light beam; S2, recording a suspended matter content value IR and an oil body content value UV inwater by using a second reference light beam to track the background; S3, according to the suspended matter content value IR and the oil body content value UV, obtaining the absorption coefficient K of the oil layer through the Lambert-Beer law, tracking and uploading the suspended matter in real time by using the second reference light beam, and measuring the absorption scattering system of the main suspended matter during calibration, so the influence of the suspended matter is eliminated, and the real-time detection of the relationship between the oil content and the light intensity is realized.

Description

technical field [0001] The invention relates to the field of oil-water content detection in the oil production process, in particular to a system for measuring the oil content in water in the oil production process. Background technique [0002] The detection of oil content in water refers to the detection of liquid oil content in water. Since oil has a lower density than water and is insoluble in water, oil is not evenly distributed in the fluid in the oil-water two-phase or oil-water-gas three-phase state. Therefore, the detection of oil content in water, especially in complex pipeline fluids, is quite technically difficult. The detection of oil content has very important applications in petrochemical, environmental protection and other fields. Excessive oil content in water will not only cause waste of oil, but also seriously pollute the environment. Therefore, the accurate detection of oil content can provide a reliable basis for the control of various industrial and ...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 刘敏詹敏邹明华杨万有张凤辉沈琼郭沛文张成富
Owner CHINA NAT OFFSHORE OIL CORP
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