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本文通过对塔中地区现今工业性油气、稠油及储层沥青的微观今貌特征的研究，结合宏观地质背景，探讨了塔中地区油气成藏及演化模式。研究表明，本区现今油气藏主要形成于喜山成工藏期，而早期成藏的油气因受不同程度的破坏仅以储层沥青和氧化残留油的形态保存下来。来自西北方向海相为主的混源油和来自东北方向海相为主的凝析气、于气形成了现今的油气藏。
Based on the study of the microscopic appearance characteristics of present industrial oil and gas, heavy oil and reservoir asphalt in Tazhong area, this paper discusses the hydrocarbon accumulation and evolution pattern in Tazhong area with the macro-geological background. The research shows that the present oil and gas reservoirs in this area are mainly formed during the Himalayan period, while the oil and gas in the earlier period are only preserved in the form of reservoir bitumen and oxidation residual oil due to the different degrees of damage. The mixed source oil from the northwestern marine facies and the condensate from the northeastern marine facies form the present oil and gas reservoir in gas.