海洋地质前沿2018，Vol.34Issue(2)：23-30,8.DOI:10.16028/j.1009-2722.2018.02004
东海西湖凹陷深层低渗—致密砂岩气成藏的地质条件与模式
A MODEL OF HYDROCARBON ACCUMULATION IN DEEPLY BURIED LOW PERMEABILITY-HIGH DENSITY SANDSTONE GAS RESERVOIRS IN XIHU SAG, EAST CHINA SEA
摘要
Abstract
The deeply buried sandstone in the Xihu Sag of the East China Sea Basin bears great possibility to form the low-permeability and high density gas reservoir according to their geological conditions.The large-area of deep-buried coal-measure source rocks there continues to generate and provide gas as a solid material basis for gas accumulation.The thick clean sandstones of transitional-facies formed in shallow-water are widely developed as reservoirs,which keep a sandwish-contact with source and cap rocks and remain effective to provide space for gas migration and preservation.In addition,the abnormal high pressure,which developed commonly in the deep strata,creates favorable conditions to help the accumulation process mentioned above.To conclude,sufficient hydrocarbon source,continuously superimposed thick sandstones and abnormal pressure are the key elements for gas accumulation in the deep low-permeability and high density sandstone in the Xihu Sag.关键词
低渗—致密砂岩气/烃源/储层/异常压力/成藏条件与模式/西湖凹陷Key words
low-permeability and high density sandstone gas/hydrocarbon source/superimposed continuous thick sandstone/abnormal pressure/gas accumulation conditions and models/Xihu Sag分类
天文与地球科学引用本文复制引用
连小翠..东海西湖凹陷深层低渗—致密砂岩气成藏的地质条件与模式[J].海洋地质前沿,2018,34(2):23-30,8.基金项目
“十三五”国家科技重大专项“东海低渗致密天然气勘探开发技术”(2016ZX05027-001) （2016ZX05027-001）
