Research And Development On Automatic Metering Device For Liquid Output Of Selected Oil Well

The well productivity measurement of fluid is an important work in the oilfieldproduction management. It has important guiding significance to achieve metering stationautomation management, downsizing to improve efficiency, save human resources, improveproduction reliability and Increase the level of automation. In order to improve single wellmeasurement’s reliability and reduce costs, improve liquid production, and achieve thedynamic, accurate, real-time measurement of liquid production.The topics put forwardassembly election wells liquid production metering device.Automatic metering device R&D project assembly election well liquid production ismainly controlled by multi-way valve, displacement sensors, dynamic weighing sensor andPC monitoring software. The multi-way valve choose PLC as the control core. The PLCcontrol motor drives the multi-way valve rotation to achieve time-well selection through thepreparation process and the rotary encoder judge selected wells in place. What’s more, itcould work at manually select wells and automatic well selection mode, through research anappropriate the algorithm to distribution measurement time when it worked at automatic wellselection mode to improve the measurement accuracy. It also could achieve real-timemeasurement of temperature, pressure, liquid production and single quality, local display andremote data transmission. The volume sensor could achieve the vapor-liquid separator ofmultiphase flow and the volume of liquid can be measured in real time.Write a program to make dynamic weighing sensors can dynamically measure thequality of the produced fluid. Study the method of calculation of the moisture content tocalculate the water and oil quality of the produced fluid without moisture content analyzer. Inthe measurement process of dynamic weighing sensors, the acceleration mechanism vibration and line pressure and other factors make a greater fluctuation of the measurement data.Examine ways to improve the hardware devices and software filtering to improve theaccuracy of the data.Host computer monitoring software development, including preparation of Winsockprograms for the connection of GPRS DTU, design database, writing to the ADO.Netprogram access to the database.ASP.NET application development PC remote monitoring sitein order to achieve the automatic storage of measured data anddisplayed.Research and development of this article sets election well liquid production automaticmetering devices to achieve well liquid production of accurate and timely measurement. Weachieved the desired goals in experiments of field.The technical indicators meet the designrequirements, and the experiments verify the feasibility of the design methods and ideas.