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火山岩气藏是当前松辽盆地北部天然气勘探的重要领域。在徐家围子地区发现的“庆深气田”火山岩气藏含气面积69.6km2,提交探明天然气储量1024.2×108m3,预示着松辽盆地深层火山岩储集层天然气资源丰富,有广阔的勘探前景。对火山岩储层进行了研究包括:①对火山岩储层形态、产状的预测;②火山岩储层孔隙、裂缝发育带与岩性、岩相的关系;③火山岩孔洞、裂缝发育带与构造的关系。给出了储层分类方法,建立了产层下限标准,在生产中使用收到良好效果。
Volcanic gas reservoir is an important area of natural gas exploration in northern Songliao Basin. In the Xujiaweizi area, the gas area of the “Qingshen Gas Field” volcanic gas reservoir is 69.6km 2, and the proven gas reserves are submitted at 1024.2 × 108m 3, indicating that the deep volcanic reservoirs in the Songliao Basin are rich in natural gas resources and have extensive exploration prospect. The research on volcanic reservoirs includes: (1) prediction of volcanic reservoir shape and occurrence; (2) relationship between volcanic reservoir porosity and fracture development zone and lithology and lithofacies; (3) relationship between volcanic rock pores and fracture development zone and structure . The method of reservoir classification is given, and the lower limit of the pay zone is established. Good results are obtained when used in production.