Three-phase metering device for medium and small liquid volume and large volume oil wells

Abstract

The invention relates to a three-phase metering device for oil wells with small and medium liquid volume and large volume, which mainly includes a gas-liquid cyclone separator, a flow stabilizer, a gas path buffer tank, a gas path metering flowmeter, a tipping bucket flowmeter, and a differential pressure transmitter . The main function of the gas-liquid cyclone separator is to complete the gas-liquid separation of incoming liquid from the oil well; the main function of the flow stabilizer is to realize gas-liquid buffering and steady flow, and to separate residual gas from oil and water; the main function of the gas circuit buffer tank is to realize the The oil and water in the gas are separated for the second time; the main function of the gas path metering flowmeter and the tipping bucket flowmeter is to measure the flow rate of the gas path and liquid path medium in real time; the main function of the differential pressure transmitter is the online measurement of the water content. The invention is suitable for accurate measurement of three-phase metering and online water content measurement of oil and gas wells with intermittent oil production, large gas volume and small liquid volume, solving the problem of large oil production measurement errors or being impossible to measure, and realizing accurate oil production of oil wells Automatic and accurate measurement, providing accurate data for refined reservoir management.

Description

technical field [0001] The invention relates to a three-phase metering for oil wells with medium and small liquid volume and large volume, in particular to three-phase metering of gas, water and oil for oil wells with intermittent oil output, large gas volume and small liquid volume. Background technique [0002] The fluid production rate of a single well is the basic data of oilfield development and an important basis for geological analysis and development plan design. Most old oilfields in my country have entered the middle and late stage of water flooding development, production decline is inevitable, oil well measurement is becoming more and more difficult, coupled with the fine analysis of production and the need to reduce costs and increase benefits, the requirements for single well measurement technology are also increasing. Therefore, the accuracy and reliability of single well measurement technology have become the focus of attention. [0003] At present, domestic ...

AI Technical Summary

Problems solved by technology

These oil measuring methods all have their limitations, and are not ideal for oil wells with intermittent oil production, large gas volume, and small liquid volume, and cannot perform online water cut measurement

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