近年来，随着勘探新理论、新认识及新成果的不断涌现，“十三五”资源评价结果已经与当前的勘探工作需求不相适应，亟需开展新一轮资源评价，为加快松辽盆地天然气勘探开发提供依据。通过分析松辽盆地北部天然气地质条件，围绕嫩江组、青山口组、营城组和沙河子组4套主要烃源岩，针对上部、中部、下部及深部4套含油气组合，建立基岩风化壳气藏、火山岩气藏、古隆起盖层气藏和源内致密气4种成藏模式。优选2大类5种类型刻度区，主要采用类比法开展天然气资源评价，估算得到松辽盆地北部天然气原地资源量为27 002×10⁸ m³，其中，常规气原地资源量为17 100×10⁸ m³，致密气原地资源量为9 902×10⁸ m³。基于资源量分布，结合天然气成藏富集地质条件分析，明确了下一步勘探方向，认为徐家围子断陷沙河子组致密气、莺山—古龙断陷营城组火山岩气以及中央古隆起带基岩潜山气是近期增储的主要领域。

In recent years, with the continuous emergence of new theories, understandings, and achievements in exploration, the results of the "13th Five-Year Plan" resource evaluation have shown an unsuitability to the current needs of exploration work, and a new round of resource evaluation is urgently needed to provide a basis for accelerating natural gas exploration and development in the Songliao Basin. By analyzing the geological conditions of natural gas in the northern Songliao Basin, focusing on four main source rocks of the Nenjiang Formation, Qingshankou Formation, Yingcheng Formation, and Shahezi Formation, and targeting four sets of oil and gas combinations in the upper, middle, lower, and deep parts， four reservoir formation models are established, including bedrock weathering crust gas reservoir, volcanic rock gas reservoir, paleouplift cap rock gas reservoir, and intra-source tight gas. Two major categories and five types of analog calibration areas are selected, and natural gas resource evaluation is mainly carried out using the analogy method. The estimated in-situ natural gas resources in the Songliao Basin are 27 002×10⁸ m³, including 17 100×10⁸ m³ of conventional gas and 9 902×10⁸ m³ of tight gas. Based on the distribution of remaining resources and combined with the analysis of geological conditions for natural gas accumulation and enrichment, the next exploration direction has been further clarified. It is believed that the tight gas of the Shahezi Formation in the Xujiaweizi Fault Depression, the volcanic gas of the Yingcheng Formation in the Yingshan-Gulong Fault Depression, and the buried-hill gas of the bedrock in the Central Paleo-uplift Belt are the realistic areas for increasing reserves in the near future.