【摘要】 本文针对不同储集体类型、不同岩溶背景下的单井及单元注气递减规律展开研究，明确了单井和单元注气递减规律的主要影响因素。针对单井注气优选出了双曲递减模型作为单井注气周期递减模型，研究了不同岩溶背景的单元注气递减规律及其特点。通过优选单井和单元注气递减模型，可为今后注气增油效果评价及提高采收率指标测算提供依据，同时为中长远注气规划部署提供有力支撑。更多还原

【Abstract】 This paper studies the decline rate and life cycle of single well and unit gas injection under different reservoir types and different karst backgrounds, and clarfies the main influencing factors of the decline law of single well and unit gas injection.Aiming at single well gas injection, the hyperbolic decline model is selected as the cycle decline model of single well gas injection,and the law and characteristics of unit gas injection decline in different karst backgrounds are studied. The optimization of single well and unit gas injection decline model can provide a basis for evaluation of gas injection effect and calculation of enhanced oil recovery index in the future, and provide a strong support for medium and long term gas injection planning and deployment.更多还原