海相优质烃源岩形成环境及其控制因素分析  

The Marine Source Rock Formation Conditions and Control Factors

作　　者：李天义[1,2] 何生[3,2] 杨智[1] 

机构地区：[1]中国地质大学研究生院,武汉430074 [2]中国地质大学构造与油气资源教育部重点实验室,武汉430074 [3]中国地质大学资源学院,武汉430074

出　　处：《地质科技情报》2008年第6期63-70,共8页Geological Science and Technology Information

基　　金：中国石油化工股份有限公司重大综合基础地质研究项目"中国南方中上扬子大陆构造与海相油气前景";国家自然科学重点基金项目"中上扬子区域盖层形成演化与有效性评价"(40739904);中国地质大学研究生学术探索与创新基金项目"中扬子海相多旋回叠合盆地构造抬升-剥蚀重建及热史动态研究"(CUGYJS0811)

摘　　要：从大量的研究实例出发,分析了海相优质烃源岩的发育环境及其主要控制因素。海相优质烃源岩的形成是原始生产力、沉积速率、海平面变化、上升流、海底热液活动、冰期、沉积环境和保存条件等因素综合作用的结果,当各种因素达到最优配置时,则有利于海相优质烃源岩的形成;在特定时期、特定的沉积环境中,某一种或两种因素可以影响或改变其他因素,成为影响海相优质烃源岩形成的最关键因素;对海相优质烃源岩发育环境的评价应该综合考虑该环境下烃源岩发育的广泛程度和烃源岩有机质丰度两方面因素。The formation of the marine fine source rocks are controlled by primary production, sedimentary rate and preservation together. This paper first analyses the main factors for marine source rocks in the order of the sediment organic matter formation, sediment and preserve; and then introduces the impersonality factors such as the sea level change, uplift flow, oceanic heat flow and glacial age which could influence the formation and distribution of the marine source rocks and could change into key factors at the special epoch and special environments. Finally it discusses the sedimentary environments for the marine source rocks. The research results indicate that： ① the formation of the marine source rocks is the result of several factors, with one or two as the key factor which can influence or change other factors; ② evaluation of the sedimentary environments for the marine source rocks should consider both the development of source rocks under this environment and the organic content.

关 键 词：海相烃源岩 控制因素 原始生产力 保存条件 沉积环境 

分 类 号：TE122.111[石油与天然气工程—油气勘探]