• 责任者：Hu Zongfang (Institute of Geology ; No.1 Gas Production Plant ; Xinjiang Oilfield Company ; PetroChina ; Karamay 834000 ; China) ; Li Chen
• 刊名：Xinjiang Petroleum Geology
• 出版年：2013
• 卷期：34(2)
• 关键词：低渗透储集层 ; low permeability reservoirs ; 储层性质 ; reservoir properties ; 准噶尔盆地 ; Junggar Basin
• 页码：p.186-188
• 图表：illus., 1 table, 5 refs.
• 分类号：1003
• issnNo：ISSN1001-3873
• isbnNo：CN65-1107/TE

Qigu oilfield is located in the southern margin of Junggar basin with complex terrain and high-steep structures, in which Kara-may formation of Triassic belongs to lacustrine shoal-bar sand body sediments with wide distribution area, big thickness and some poten-tials for hydrocarbon exploration. Because the strata are relatively old and deep-buried in geologic history periods, they have strong diagen-esis and compaction, being characterized by seldom primary porosity and developed secondary porosity and fractures. The study shows that the Karamay formation belongs to a porous medium reservoir with super-low porosity and ultra-low permeability, smaller pore throat and high displacement pressure. And it is concluded that this reservoir belongs to a non-conventional and tight sandstone reservoir.