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致密砂岩气藏的类型和勘探前景 被引量:105

TYPES OF TIGHT SAND GAS ACCUMULATION AND ITS EXPLORATION PROSPECT
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摘要 在总结前人研究基础上,对比分析了2种不同类型致密砂岩气藏的成藏条件及成藏特征:“原生型”深盆气藏,如加拿大阿尔伯达盆地、美国西部盆地及我国鄂尔多斯盆地的致密砂岩气藏;“改造型”致密砂岩气藏,如我国四川盆地西部中生界致密碎屑岩气藏。通过实例分析,指出了致密砂岩气藏研究方面存在的问题及勘探前景。 As one of the unconventional gas resources, tight sand gas reservoirs which have been found in dozens of basins worldwide, attract more and more attention currently and are deemed to be an important backup resource for conventional gas in future. Its types of formation and distribution are various. Based on the researches of predecessors, this paper analyzes the different forming conditions and characteristics of two types of tight sand gas reservoir respectively: one is "pre-exiting deep gas accumulation", such as those in Canada's Alberta Basin, western United States Basin and China's Ordos Basin; the other "subsequent tight band gas accumulation" such as the Cenozoic tight clastic gas pool of the western Sichuan Basin. The status quo and prospect of tight sand gas reservoirs are summarized through case studies.
出处 《天然气地球科学》 EI CAS CSCD 2007年第3期351-355,共5页 Natural Gas Geoscience
关键词 致密砂岩气藏 成藏条件 成藏特征 Tight sand gas accumulation Reservoir forming condition Accumulation characteristic.
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