Research And Application Of Profile Control Technology On The High Water Cut Block Daqingzi Oilfield

CO₂ flooding technology refers to the CO₂ gas injection in reservoir,By producing formation of remaining oil and gas in order to improve reservoir recovery factor of tertiary oil recovery technology.In many improve oil recovery technology,CO₂ flooding technology has a wider application prospect and the more obvious technical advantages,It can not only effectively reduce the greenhouse gas emissions,but also can realize the maximization of energy exploitation,our country in recent years has carried out in-depth study and made great progress.Based on the physical and chemical properties of CO₂ and other basic knowledge on the basis of understanding and mastering,the oil displacement mechanism of CO₂ has carried on the detailed analysis.And according to the experience of foreign CO₂ miscible flooding,combination of jilin oil field geological conditions,design the temporary storage tank,pump pressure and injection pump and the technological process of CO₂ flooding parameters,such as system circulating reflux flow,and the entire injection,reflux system of monitoring and measuring technology,determine the selection of CO₂ miscible flooding reservoirs.In our country under the condition of lack of natural CO₂ gas reservoir of CO₂ flooding of CO₂ gas source can choose industrial CO₂ emission,loading solid CO₂ agent,sunlight greenhouse air fertilizer increased ShiQi.According to the CO₂ gas source,the construction cost,increased amount of oil,oil,etc.,for the economic evaluation of CO₂ flooding,provide theoretical basis for the scene to carry out the CO₂ flooding.