Research Of Oil-water Emulsion Flow Measurement Test

Multi-phase fluid is present in oil, chemical industry, metallurgical widely. Study of measurement parameter exploration, I have the importance of safety in the production of process control and industrial sources. The interest has been the subject of major national and international, this area is noted. When the certificate mixed flow process are the complex, the most important thing to be measured flow rate very difficult, by measuring the parameters is very difficult. In this paper, the construction of a two-stage differential pattern of pressure flow measurement based on optimal design for enterprise and numerical simulation, it is involved in studying the oil flow rate of water is measured using a Venturi. The test bench is established in order to calibrate the emission factor of the enterprise, calibration results in accordance with the design parameters.Study Course downhole flow measurement technique to achieve optimal utilization of a majority of reservoirs, intelligent completion system to extend the life of production wells to monitor multiple reservoir measuring horizontal and multilateral wells, determining the hierarchical simultaneous production can then be used in real time to evaluate the characteristics of the reservoir, to verify the effect of introducing incentives such as acidification, secondary oil recovery, for making decisions and monitoring of exploration provides the basis for design. The purpose of this paper is to study and equipment calibration experiments oil-water two-phase measurement. By establishing lay the foundation for the project follow-up, the test bed, the ultimate goal is to calibrate the venturi.Based on the foregoing, mainly carried out the following studies in this document:1) Found a lot of literature, analyzing methods and tools for testing the two-phase oil-water flow, studied the principles, structure and associated test bench flowmeter calibration and measuring key factors by analyzing four aspects of mixed phase flow in two phases. To the main points of the thesis, the corresponding measures should be taken to analyze the main factors. At the same time, take the idea of measuring the maturity of the gas-liquid two-phase flow, and established the basic principles for the measurement of oil-water Multiphase flow measurement using a flow model based on the homogeneous differential pressure method, providing basis for selecting the type of material and design of the test bench.2) Based on actual job requirements to make the calculation using numerical simulation software ANSYS-CFX fluid in the structure of a device for downhole flow measurement obtained Euler-Lagrange method. Analysis, simulate and calculate the base device of the measuring tube-venturi mixed phase flow, which provides a reliable reference for the optimization design of the venturi tube. Also make sure the computational analysis simulation SMV static mixed device using Fluent, which provides proof of the theory of static mixed selection device.3) Analysis of theoretical models and simulation software, select Venturi flow measurement test pressure at both ends of the micro-pressure sensors, mass flow measuring fluid flow tube, taking into account other important parameters to measure the impact and the final analysis of the data, selected mass flow meter capable of measuring flow rate to, but also to measure the temperature, density, etc. parameters. Compilation of relevant data acquisition and signal transmission system, pressure, density signal line collection, transmission and analysis, and methods of data processing integrated into the system for trial has brought great convenience.4) The principle experiments are described, the experimental program was designed and built water and preferred test bench, and on this basis were emulsified state miscible flow measurement experiments.This thesis work is done by major national special-flow measurement in the study of soil and groundwater in sand-oil separation device sub-project of the underground part of the study for flow measurement device is mainly established test bench. The main test bench is built on the Venturi-type test indoor applications, to lay the foundation for the progress of the project.