High-precision oil three-phase automatic metering device and metering method thereof

Abstract

The invention discloses a high-precision oil three-phase automatic metering device. Through the separation function of an overflow cup, a separating umbrella and overflow holes at four sides beneath the separating umbrella, the gas and fluid separation can be fully performed on oil well output liquid, the separating effect is good, and separated gas is metered; a liquid level meter, a force measuring sensor, an electromagnetic valve and a measurement and control circuit can accurately meter oil and water under the condition of not separating; the metering device is compact and simple in structure; the sensor and the measurement and control circuit are easy to realize, and cost is low; the metering device is high in degree of automation, safe and reliable. The high-precision oil three-phase automatic metering device can be directly accessed to a 'digital oilfield system' constructed at present, so as to monitor the output of the production oil well precisely in real time. Compared with the prior art, the high-precision oil three-phase automatic metering device is compact and simple in structure; the metering device is high in degree of automation, safe and reliable; the metering device can be directly accessed to a 'digital oilfield system' constructed at present, so as to monitor the output of the production oil well precisely in real time.

Description

technical field [0001] The invention relates to the technical field of petroleum engineering, in particular to a high-precision petroleum three-phase automatic metering device. Background technique [0002] Metering plays a vital role in the oilfield development process. At present, the metering equipment or means mainly used for oil well production fluid include glass tube oil measurement, tipping bucket oil measurement, dynamometer diagram oil measurement software, etc. Among them, when the glass tube measures oil, it is necessary to separate the oil and water mixture before measuring. There are problems such as low measurement accuracy, high labor intensity for workers, many application devices, complicated process flow, and difficulty in adapting to the simplified and optimized requirements of the ground system. The technical equipment for measuring oil by tipping bucket is simple, but it only measures the mixture of oil and water which is initially separated from gas a...

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Problems solved by technology

Among them, when the glass tube measures oil, it is necessary to separate the oil and water mixture before measuring. There are problems such as low measurement accuracy, high labor intensity for workers, many application devices, complicated process flow, and difficulty in adapting to the simplified and optimized requirements of the ground system. The technical equipment for measuring oil by tipping bucket is simple, but it only measures the mixture of oil and water which is initially separated from gas and liquid. Wellhead data of pumping wells, pumping unit operating condition analysis and other data are solved by solving the wave equation, and the pump dynamometer diagram is obtained from the ground dynamometer diagram to realize the measurement of crude oil. Different methods for determining the damping coefficient of different oils lead to large errors in measurement results, especially for heavy oil wells, where the damping coefficient is relatively large, and the measurement accuracy is difficult to guarantee in practical applications

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