吉南地区三叠系油气藏的油气源不足问题探讨

Discussion on Insufficient Oil and Gas Sources of Triassic Reservoirs in Jinan Area, Tarim Basin

利用岩心、分析化验、试油、油井生产等资料,分析了吉南地区三叠系Ⅰ油组厚层油水同层出现的原因;从油气藏的成藏特征、空间分布特征、油气藏充满程度等方面探讨了吉南三叠系油气源不足的问题。研究结果表明,无论是三叠系Ⅰ油组的油还是三叠系Ⅱ油组的天然气聚集,都存在油气源不足的问题。据此,对该区的下一步勘探方向提出了建议。

The core samples, lab analysis and formation testing and well production data are used to analyze the reason why oil and water occur in the same zone of Triassic oil layer-Ⅰ in Jinan area. The insufficient oil and gas sources found in the Triassic system are discussed in terms of petroleum accumulation feature, spatial distribution and degree of filling in oil-gas reservoirs. The results indicate that whether layer-Ⅰ oil accumulation or layer-Ⅱ gas accumulation of Triassic, both are lacking in enough oil and gas sources. Some advices on further exploration are also given in this paper.