Comprehensive Regulation Technique Research And Application Of Stream Flooding In Qi40Block

Based on the practical production situation of Block Qi40in Liaohe mid-depth heavyoilfield, the development efficiency of steam flooding in pilot test area, enlarged test area andextended were evaluated in the paper, respectively, proposing the main problems. Productiondata showed that steam flooding applied successfully in Block Qi40,however,a lot ofproblems exposed in this process have been in need of proposal. These problems included thatthe4well groups in pilot test had been in the period of later stage of steam flooding and thatthe situation of more investment and less production was so serious that it should be covetedto other development methods. And steam breakthrough control techniques should be studiedin that the breakthrough happened in a percentage of45%of7well groups in enlarged testarea causing many problems in the process of production. Oil production also declined in theextended test area because of unequal employment of reservoir, poor effects of layinginjection, and breakthrough, which demonstrated new techniques should be studied toimprove development effect of steam flooding.Enter the flooding period flooding block Qi40steam, plane and interlayer longitudinalcontradiction, high temperature steam channeling phenomenon is serious, the steam floodingcomprehensive control technology research and application. Through the study of theoreticalinnovation, technology and field practice, the steam drive production of " three changes ",establish new idea form adjustment control, new ideas, through the research and applicationof the matching process measures, the effective protection of steam drive production runningsmoothly, play a significant effect of increasing oil production.