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Study on Combustion Model of the Propellant used in Oil Composite Perforation

机译：油复合穿孔推进剂燃烧模型研究

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摘要

The new technology of composite perforation, which combines together the conventional perforation and the high energy gas fracturing, can effectively increase the hydrocarbon production and improve the enhancement of the oil/gas recovery. In recent years, the composite perforation technique has been widely used worldwide. However, this technology was not used extensively in Chinese oil filed because its research on the combustion characters of propellant is rare and the corresponding optimal perforation design is not practical. Based on a comprehensive analysis of the propellant's burning features, we establish a new combustion model for the propellant used in composite perforation, which takes into account that the combustion consists of the cylinder layer burning and circular burning along the perforation tunnels. Using the actual well data from oilfield and the conventional parameters of domestic propellant, we use this new model to perform numerical simulations and analyze in detail the process of related pressure change. The simulation results are accordance with the actual data from field operation, which further confirms the reliability of the model. The established model can provide better references for the optimum design of composite perforation.
机译：复合穿孔的新技术，它结合在一起的常规穿孔和高能量气体压裂，可有效地提高烃生产，提高了油/气回收的增强。近年来，复合穿孔技术已广泛应用于全球。然而，这种技术在中国石油中没有广泛使用，因为它对推进剂的燃烧特征的研究是罕见的，并且相应的最佳穿孔设计不实用。基于对推进剂的燃烧特征的全面分析，我们建立了一种用于复合穿孔的推进剂的新型燃烧模型，这考虑了燃烧由沿穿孔隧道燃烧和圆形燃烧的燃烧层。使用来自油田的实际井数据和国内推进剂的传统参数，我们使用这种新模型进行数值模拟，并详细分析相关压力变化的过程。仿真结果符合现场操作的实际数据，进一步证实了模型的可靠性。建立的模型可以为复合穿孔的最佳设计提供更好的参考。

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