特种油气藏2017，Vol.24Issue(3)：9-14,6.DOI:10.3969/j.issn.1006-6535.2017.03.002
沧东中生界火山岩特征与油气成藏模式
Geologic Characteristics and Hydrocarbon Accumulation Model of Mesozoic Volcanic Rocks in Cangdong Area
摘要
Abstract
Cangdong area is characterized by developed volcanic rocks, strong tectonic movement and complicated reservoir controlling factors.In this paper, the tectonic setting of volcanic rock development and the distribution of volcanic rocks were investigated.Then, geologic characteristics and hydrocarbon accumulation models of volcanic rocks in Cangdong area were analyzed by using drilling, seismic and assay results comprehensively.It is indicated that under the control of strike-slip belts at the basement, volcanic rocks are distributed along NNW, and two volcano eruption center complexes (i.e.south and north) are formed.In area, volcanic lithofacies are distributed in the shape of girdle around the eruption centers.In Himalayan faulting stage, stereo oil supply networks were formed, and combined with the effective source rocks of Kong 2 Member, constituted two migration and accumulation systems, i.e., lateral contact between source rocks and reservoirs-proximal charging, and alternation between faults and reservoirs-lateral migration.The research results provide the basis for the further confirmation of large and middle volcanic oil and gas reservoirs in Cangdong area.关键词
火山岩/火山岩岩相/地质特征/喷发模式/运聚模式/中生界/沧东地区Key words
volcanic rock/volcanic lithofacies/geologic characteristics/eruption mode/migration and accumulation mode/Mesozoic/Cangdong area分类
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周立宏,李洪香,杨朋,林伶,曲宁..沧东中生界火山岩特征与油气成藏模式[J].特种油气藏,2017,24(3):9-14,6.基金项目
中国石油科技重大专项"大港油区大油气田勘探开发关键技术研究"(2014E-06-03) （2014E-06-03）
