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首页> 外文期刊>Chinese science bulletin >The generation and accumulation of natural gas from Yinan 2 gas pool in Kuqa Depression
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The generation and accumulation of natural gas from Yinan 2 gas pool in Kuqa Depression

机译：库车De陷沂南2气藏天然气成藏

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摘要

By using the methods of hydrocarbon generation kinetics and carbon isotope kinetics, combined with geological background of natural gas pool formation, the generation and accumulation of natural gas from Yinan 2 gas pool was studied in Kuqa Depression of the Tarim Basin. Natural gas of Yinan 2 gas pool is mainly derived from Mid dle and Lower Jurassic coal-bearing source rocks, generally belongs to long time-accumulated gas. It is suggested that Yinan 2 gas is chiefly accumulated in the last 5 Ma, its R_0 ranges from 1.25 percent to 1.95 percent, the loss rate of natural gas is about 25 percent-30 percent. This work not only complements and reduces the deficiency of formation model of natural gas pools which traditionally depends on the matching relation ships between source rock, reservoir, cap rock, and trap, but also is a useful reference in the study of other gas pools.
机译：利用生烃动力学和碳同位素动力学方法，结合天然气藏形成的地质背景，研究了塔里木盆地库车De陷沂南2气藏天然气成藏规律。沂南2气藏天然气主要来源于中侏罗统和下侏罗统含煤烃源岩，一般属于长时间聚集的天然气。建议在最后5 Ma内主要聚集沂南2气，其R_0范围为1.25％至1.95％，天然气损失率约为25％-30％。这项工作不仅弥补并减少了天然气藏形成模型的不足，天然气藏传统上依赖于烃源岩，储集层，盖层岩和圈闭之间的匹配关系，而且对其他天然气藏的研究也有帮助。

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