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龙门山冲断带前缘地区目前已发现的油气田或含油气构造主要分布在马角坝—通济场—双石断裂以东,统计分析结果表明52%分布在马角坝—通济场—双石断裂与广元—关口—大邑断裂之间(即前缘褶皱冲断带),其地表出露为侏罗系,其余则主要分布在广元—关口—大邑断裂以东的前陆坳陷带,地表为白垩系或第四系覆盖,认为侏罗系出露地区具有较好的油气勘探前景。通过研究区典型地震剖面解释,从构造变形角度解释这种油气分布特征的成因。
The oil and gas fields or petroleum-bearing structures that have been found in the front of the Longmen Shan thrust belt are mainly distributed to the east of Majiaba-Tongjiji-Shuangshi fracture, and the statistical analysis shows that 52% are distributed in Majiaba-Tongjiachang-Shuangshi Between the Guangyuan-Guankou-Dayi fault (ie, the front margin fold-thrust belt), the surface is exposed as Jurassic, while the rest is mainly distributed in the foreland depression belt east of the Guangyuan-Guankou-Dayi fault , The surface is covered by Cretaceous or Quaternary, and it is considered that the Jurassic outcropped areas have good prospect of oil and gas exploration. Through the interpretation of typical seismic sections in the study area, the causes of this oil and gas distribution are explained from the tectonic deformation.