摘要
长期以来,渤海南部火山岩发育区的勘探存在诸多挑战:地震资料品质差,有利圈闭目标刻画难度大;储层埋深大,优质储层成因机理研究薄弱;地质条件复杂,油气成藏机理认识不清。针对上述地质难题,通过系统开展新生界火山岩三维定量精细刻画和火山岩发育区变速构造校正成图,真实还原了火山岩下构造原貌,为精细构造解释提供了可靠依据。通过开展火山岩发育区成藏地质条件精细解剖,提出"断裂—岩浆"联合控制坡隆构造带的形成及规模性圈闭的发育、岩浆活动时空有序分布有利于深部优质储层发育、"断裂—岩浆"时空有序配置控制火山岩发育区的油气差异富集。以此为指导,首次在黄河口凹陷南部斜坡带火山岩发育区发现了渤中34-X大型优质油田。
Exploration in the volcanic rock zone in South Bohai Sea has been facing many challenges： poor seismic data, difficult characterization of target traps, deeply buried reservoirs, less researches on the development mechanism of high-quality reservoirs, complex geological conditions, and unclear hydrocarbon accumulation mechanism. Systematical 3 D quantitative description of the Cenozoic volcanic rock and structural correction imaging with variable interval velocity have restored the original structure under the volcanic rock and provided a reliable basis for fine structural interpretation. Based on fine delineation of the hydrocarbon accumulation conditions in the volcanic rock zone, it is proposed that the combined control of faulting and magmatic activities determines the formation of the slope-bulge belt and the development of large-scale traps; the orderly spatial-temporal distribution of magmatic activities is conducive to the development of deep reservoirs; and the orderly spatial-temporal configuration of ＂fault and magma＂ controls the differential hydrocarbon accumulation. Guided by these understandings, the first large-scale high-quality oilfield, BZ34-X, was discovered in the volcanic rock zone of the southern slope in the Huanghekou sag.
作者
李果营
杨波
韩自军
杨海风
胡志伟
宿雯
邓辉
高雁飞
Li Guoying;Yang Bo;Han Zijun;Yang Haifeng;Hu Zhiwei;Su Wen;Deng Hui;Gao Yanfei(Tianjin Branch of CNOOC Ltd)
出处
《中国石油勘探》
CAS
北大核心
2018年第5期37-46,共10页
China Petroleum Exploration
基金
国家科技重大专项"渤海海域勘探新领域及关键技术研究"(2016ZX05024-003)
关键词
渤海南部
火山岩发育区
坡隆构造
控藏机理
勘探实践
South Bohai Sea
volcanic rock zone
slope-bulge belt
reservoir controlling mechanism
exploration practice
