米仓山前缘隐伏构造带天然气勘探前景  

Natural-gas Exploration Prospect of Buried Structural Belt in Front Micangshan

作　　者：许国明[1] 孔德秋[1] 袁洪[1] 石国山[1] 

机构地区：[1]中国石化西南油气分公司勘探开发研究院贵阳所,贵州贵阳550004

出　　处：《天然气技术与经济》2011年第3期14-17,35,共5页Natural Gas Technology and Economy

摘　　要：为进行米仓山前缘隐伏构造带的油气勘探潜力研究,对其构造带的地层层序与生储盖条件以及构造圈闭条件进行了分析,得出该区古中生界海相层系发育嘉陵江组潮坪白云岩储层、飞仙关组鲕粒滩灰岩储层,具有较好的储集条件;前陆反冲三角带内的逆掩断层把三角带分成叠瓦状的断片,断片叠合形成楔状双重构造,发育一批构造圈闭,圈闭封盖条件较好;发育寒武系、志留系、下二叠统优质烃源岩,天然气烃源岩条件较优越。综合分析认为该区具有巨大的天然气勘探潜力,代表了四川盆地内一个新的勘探领域。In order to make well know the hydrocarbon exploration potential of buried structural belt in front Micangshan,the sequence stratigraphy,source rock-reservoir-caprock assembly and structural trap are analyzed.Some results are obtained,including （1） Jialingjiang Formation,consisting of tidal flat dolomite,and Feixianguan Formation,consisting of oolitic shoal limestone,are the developed Palaeozoic and Mesozoic marine stratum and characterized by better reservoir conditions;（2） triangle zone is separated into imbricated fragments by overthrust fault within recoiling triangle zone,and these fragments are overlaid each other to form a wedged duplex structure;as a result,a set of structural traps,with better sealing ability,might form;and （3） some high-quality source rock of Cambrian,Silurian and Lower Permian are developed.It is considered that the buried structural belt,with a huge natural-gas exploration potential,will become a new domain in Sichuan Basin.

关 键 词：储层特征 烃源岩条件 构造样式 圈闭 勘探潜力 

分 类 号：P618.130.2[天文地球—矿床学]