Research and application of chemical viscosity reduction and cold recovery technology for ordinary heavy oil
In response to the problems of low thermal energy utilization,edge water influence,and ineffective water flooding in steam huff and puff and water flooding of ordinary heavy oil reservoirs,the developmentmethod was changed,and chemical cold recovery viscosity reducing agents were studied and evaluated,with a viscosity reduction rate of over 90% .The well closure reaction time and selection application conditions were optimized,and water plugging and gas energy enhancement processes werematched to improve the effectiveness and benefits of chemical cold recovery.The water content was reduced by 13 percentage points,and the operating cost was 2054 yuan/ton.This is to explore new directions for improving heavy oil recovery.
ordinary heavy oilsteam huff and puffChemical viscosity reductioncold recoveryimproving oil recovery rate
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