Production And Development Index Conversion Of Heavy Oil By Water Flooding Based On Physical Experiment

The petroleum resources in China is very short and the oilfield which has been put into development has entered high water cut stage,water content is above 80%.Increasing production is very difficult and the production efficiency is low.In order to improve oil production,the distribution of oil,gas and water must be described.Due to the high cost and time-consuming of physical simulation,it's important to evaluate the effect of reservoir quickly.A large number of experiment has been done in laboratory and the study only based on laboratory analysis,didn't taking these experimental data to the point of view of actual field.This article puts forward the conversion method of development indexes in water drive heavy oil reservoir,which is beneficial to establish laboratory and field contact and guide oilfield production and adjustment.In this paper,one-dimensional,two-dimensional mathematical model of water flooding in heavy oil reservoir are established.The similarity criterion of water flooding in heavy oil reservoir is derived;According to the experiment data of laboratory physical simulation,using grey correlation method,a filtering software based on indoor experimental data is compiled,so we get the main similarity criterion;Through the numerical experiment,the main similarity criterion based on seepage equation is obtained;analyzing these two methods to get the similarity criterion by the method of theoretical analysis;finally through analyzing the condition of actual field and the laboratory,we can determine the scale factor of each dimensionless similarity criterion.Using experimental data and the similarity criterion,we can obtain a set of production and development index conversion method based on indoor experimental data.The research result can convert the existing laboratory physical data to actual oilfield data,establishing the laboratory and the field actual contact,thus it's beneficial to guide the development of reservoir.