(1) Manual sampling.
The operator takes a certain number of oil samples, so that the water content of the oil sample can be determined by distillation method, electroderegistration method, etc., so as to obtain the water content parameters of the oil well. This is the main detection method used in China's oilfields. It is not easy to take oil samples manually. The representativeness is not strong, which increases the error of the water content.
2) **Metering.
Installed on the pipeline, the meter uses a liquid density meter in the form of a vibrating tube to measure the density of the oil-water mixture, and calculates the water content according to its density.
1.The density meter measures the moisture content. The density of the oil-water mixture is measured using a liquid density meter in the form of a vibrating tube, and the water content is calculated based on its density.
2.The capacitance method measures the moisture content. The moisture content measurement of low water content is mostly based on coaxial barrel capacitive sensors, and the principle of dielectric constant and moisture content of emulsion is used to realize the measurement of water content.
3.Microwave method. According to the different absorption degree of ** and water to the microwave, the moisture content of the oil-water mixture is detected.
4.Y-ray and X-ray absorptiometry. As Y-rays and X-rays pass through the substance, the intensity of the rays is attenuated. Since the absorption coefficient of ** and water is different, the moisture content of the oil-water mixture can be calculated by measuring the intensity of the rays.