中国陆相蒸发岩盆地中烃源岩的发育规律及其生排烃特征研究进展

发布时间：2018-03-05 01:29

本文选题：蒸发岩　切入点：烃源岩　出处：《地质科技情报》2017年04期 　论文类型：期刊论文

【摘要】：通过大量文献调研和多学科综合分析,探讨了我国陆相蒸发岩与烃源岩的成因联系以及蒸发岩对烃源岩生排烃的影响,力求系统、深入地阐述蒸发岩盆地中烃源岩的发育规律及其生排烃特征。结果表明:在蒸发岩盆地中内源有机质和外源有机质的来源都有一定的保障;盐湖中的水体分层为有机质的保存提供了极为有利的条件,有机质富集的"生"、"运"、"聚"、"保"条件都具备。因此,蒸发岩盆地的半深湖-深湖区成为有机质富集的有利区。蒸发岩盆地中烃源岩形成时为强还原环境,且盐类物质含量高,同时因为膏盐岩的高热导率和致密性等特征,使得蒸发岩盆地中烃源岩生排烃过程和产物都受到影响。在盐类催化作用下,烃源岩生排烃阶段提前,相同演化阶段油、气产率以及排烃率均较高。但目前,在蒸发岩盆地中烃源岩的研究仍存在诸多不足,需要对蒸发岩盆地沉积作用和有机质富集机理进行系统性研究,在盐类物质对烃源岩生排烃的催化机理、催化效应的定量化以及蒸发岩盆地中烃源岩评价标准的建立等方面做进一步的深化研究。
[Abstract]:In this paper, the genetic relationship between continental evaporite and source rock and the influence of evaporite on hydrocarbon generation and expulsion of source rock in China are discussed through a large number of literature research and multidisciplinary comprehensive analysis. The development law of source rock and the characteristics of hydrocarbon generation and expulsion in evaporite basin are described in depth. The results show that the source of endogenous organic matter and exogenous organic matter are guaranteed to some extent in evaporite basin; The stratification of water bodies in salt lakes provides extremely favorable conditions for the preservation of organic matter. The conditions for organic matter enrichment, such as "generation", "transportation", "accumulation" and "preservation", are all available. The semi-deep lake and deep lake area of the evaporite basin are favorable areas for the enrichment of organic matter. The source rocks in the evaporite basin are formed in a strong reductive environment with high salt content, because of the characteristics of high thermal conductivity and compactness of the gypsum rock. The process and product of hydrocarbon generation and expulsion of source rock in evaporite basin are affected. Under the action of salt catalysis, the hydrocarbon generation and expulsion stage of source rock is advanced, and the oil, gas production rate and hydrocarbon expulsion rate are higher in the same evolution stage. There are still many deficiencies in the study of source rocks in evaporite basins. It is necessary to systematically study the mechanism of sedimentary processes and enrichment of organic matter in evaporite basins, and to study the catalytic mechanism of hydrocarbon generation and expulsion from source rocks by salts. The quantitative analysis of catalytic effect and the establishment of evaluation criteria for source rocks in evaporite basins are further studied.
【作者单位】：长安大学地球科学与资源学院;西安石油大学地球科学与工程学院;中国石油测井有限公司长庆事业部;
【基金】：国家自然科学基金项目(41173055) 中央高校基本科研业务费专项资金(310827172101)
【分类号】：P618.13

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