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依南 2构造位于新疆塔里木盆地库车坳陷克—依构造带东段的依奇克里克背斜南部。通过天然气甲烷碳同位素、储集层有机包裹体均一温度、K—Ar同位素等方面的研究及其与天然气藏成藏过程关系的研究 ,确定了依南 2侏罗系气藏的形成期次和过程 ,建立了气藏的成藏模式。依南 2气藏的形成是一个连续过程 ,天然气藏的形成经历了早期有机包裹体形成和后期气藏形成两个阶段。天然气注入开始于吉迪克末期—康村期 ,该阶段是包裹体形成的主要时期。康村中期以后可能是气藏形成的主要时期。气源岩天然气进入储集层的排烃方式是直接排气 ,进入储集层形成气藏。天然气运移距离短 ,散失少 ;并有良好的煤系泥岩作为盖层 ,保存条件好 ;因而形成了依南 2侏罗系气藏 ,原生气藏的主要控制因素是储集层的物性
The YINAN 2 structure is located in the southern part of the Erkridge Creek anticline of the Kekei structural belt in the Kuqa Depression, Tarim Basin, Xinjiang. Based on the studies on the carbon isotopes of natural gas methane, the homogenization temperature of organic inclusions in reservoirs and the K-Ar isotope and its relationship with the process of gas accumulation in natural gas reservoirs, the formation stages and Process, the establishment of gas accumulation model. The formation of YINAN 2 gas reservoir is a continuous process. The formation of natural gas reservoir has experienced two stages, the formation of early organic inclusions and the formation of gas reservoirs in the latter period. Natural gas injection started in the end of the Guidic period - Kangcun period, which is the main period of the formation of inclusions. After the middle of Kang Village may be the main period of gas reservoir formation. Gas source rock Natural gas into the reservoir of hydrocarbon exhaust is directly discharged into the reservoir to form a gas reservoir. The natural gas has a short distance and little loss. There is a good coal-bearing mudstone as the cap rock with good preservation conditions. As a result, the Jurassic gas reservoirs in the Yanen-2 are formed. The main controlling factors of the gas reservoirs are reservoir physical properties