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通过对建南地区上三叠统须家河组基本石油地质条件的分析,认为须家河组烃源岩有机质丰度高、类型好、热演化程度适中、横向展布稳定、储层致密,且区内油气显示丰富,多口井测试达到工业气流,测试获得高产和稳产,该区具有致密砂岩油气藏形成的地质条件。结合区内气藏分析,进一步明确了建南地区须家河组气藏为具有低孔、特低渗、气水分异不明显等特征的先成型致密砂岩油气藏,弄清了油气富集成藏主控因素,指明了该区下步勘探的主要方向。
Based on the analysis of the basic petroleum geological conditions of the Upper Triassic Xujiahe Formation in Jiannan area, it is considered that the source rocks of the Xujiahe Formation have high organic matter abundance, good type, moderate thermal evolution, stable horizontal distribution, tight reservoir, In addition, the oil and gas in the area show richness, and the test of multiple wells reaches the industrial gas flow. The test results in high yield and stable production. The area has the geological conditions for the formation of tight sandstone reservoirs. Based on the analysis of gas pools in the area, it is further clarified that the Xujiahe Formation gas reservoirs in Jiannan area are preformed tight sandstone reservoirs with low porosity, ultra-low permeability and little obvious gas-water difference, Main control factors, indicating the main direction of the next exploration area.