热水沉积判别标志及与烃源岩的耦合关系

Hydrothermal sedimentary discrimination criteria and its coupling relationship with the source rocks

热水沉积作用在我国广泛分布,热水沉积区已发现具规模的油气藏。结合热水沉积作用和烃源岩成因机理的实践研究表明,热水沉积作用与烃源岩发育在时间、空间和地球化学等方面有着很好的耦合关系。热水活动能促使生物生产力显著提高,有利于有机质的富集和保存,表征热水活动的地球化学参数与富有机质地层的有机质富集程度之间存在正相关关系,为烃源岩的形成提供了良好的物质基础和保存条件。因此,研究热水沉积作用与烃源岩之间的关系有助于我国热水沉积区烃源岩的勘探开发。

Hydrothermal sedimentation is widely distributed in our country,and large oil and gas reservoirs havebeen found in hydrothermal sedimentary areas.Combined with the practical researches on hydrothermal sedimentation and hydrocarbon source rocks show that there is a good coupling relationship between the hydrothermal sedimentary and the source rock development in time,space,and geochemistry.Hydrothermal activity can promote the occurrence of biological productive forces,and is conducive to the enrichment and preservation of organic matter,because there is a positive correlation relationship between the degree of organic matter enrichment in organic rich strata and the parameter of characterization of hydrothermal activities of the geochemistry,which provides a good material basis for the formation of hydrocarbon source rocks.Therefore,the study of the relationship between the hydrothermal sedimentation and the source rocks is helpful to the exploration and development of source rocks in hydrothermal in our country.