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自1964年发现威远大气田后,迄今已30余年了。今后将如何在四川盆地震旦系含气层中选择有利的区块及争取发现第二个威远大气田是人们感兴趣的问题。文中应用含油气系统的理论和方法,初步对比分析了威远气田和资阳地区的“先天”基本石油地质要素和“后天”遭受地质作用的差异,总结出控制震旦系气藏的4条主要地质因素,其中起主导作用的因素是圈闭大小和隆起幅度的高低。从而提出在四川盆地震旦系含气层中的勘探思路和选择有利区块的依据,并指出川中盘龙场潜伏构造有可能找到第二个威远大气田。
It has been more than 30 years since the discovery of Weiyuan Gas Field in 1964. In the future, how to select favorable blocks in Sinian gas reservoirs in the Sichuan Basin and strive to find the second Weiyuan gas field are of great interest to people. Based on the theories and methods of oil-gas system, this paper compares and contrasts the “natural” basic petroleum geological factors in Weiyuan and Ziyang areas and the differences of the acquired “post-day” geological features, and concludes that the four major Geological factors, which play a leading factor in the size of the traps and the level of uplift. Therefore, the exploration ideas and the basis for selecting favorable blocks in the gas reservoirs of the Sinian in the Sichuan Basin are put forward. It is pointed out that it is possible to find the second Weiyuan Gas Field in the Panlongchang field in central Sichuan.