摘要
呼图壁气田位于准噶尔盆地南缘第三排构造 ,是该盆地目前发现的最大气藏。产层为下第三系紫泥泉子组 ,产凝析油气。油气源研究表明油气均来自侏罗系源岩 ,该源岩在白垩纪达到生烃高峰 ,而呼图壁构造形成于喜山晚期 ,晚于源岩的生烃高峰 ,时空关系不匹配。文章详细分析了气藏成藏过程 ,指出呼图壁构造之所以能形成中型气藏 ,是先期聚集于深层侏罗系或白垩系储层油气向上转移的结果 ,燕山晚期及喜山早期形成的古圈闭起到了油气运移中转站的作用 ,并提出该区近期的勘探方向。
Hutubi gas field is located at the third row of structures in the southern fringe of Zhunge′er Basin and it is the largest gas field found up to now in the basin. Condensate gas has been producing from the Ziniquanzi Formation of Paleogene in the field. Through hydrocarbon source correlation it was indicated that the oil and gas all came from Jurassic source rocks which peak hydrocarbon generation occurred in Cretaceous; and the Hutubi structure was formed in Late Himalayan Epoch being later than the peak hydrocarbon generation time of the source rocks, so that the time space relation was not coordinated. The process of gas reservoir formation is analyzed in detail in the paper. It is pointed out that the reason why a medium sized gas reservoir could be formed in Hutubi structure is as a result of the upward transferring of the oil and gas accumulated in the deep buried Jurassic or Cretaceous before, i.e. the paleotrap formed during Late Yanshan Epoch and Early Himalayan Epoch played a transferring role in oil and gas migration. In addition, the exploration trend in the near future at this region is also proposed in the paper.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2004年第3期16-18,共3页
Natural Gas Industry
基金
博士后基金资助
关键词
准噶尔盆地
呼图壁气田
成藏过程
油气中转站
地球化学特征
Zhunge′er Basin,Hutubi gas field,Reservoiring process,Oil and gas transfer station, Redistribution
