松辽盆地南部深层中-高演化阶段烃源岩品质评价标准探讨  

Discussion on organic matter abundance evaluation criteria of source rocks in deepmiddle-high thermal evolution stage in south Songliao Basin

作　　者：黄文彪 程杰 邵明礼[2] 卢双舫 薛海涛 屈卫华[2] 白连德[2] 王颖[2] 张浩 HUANG Wenbiao;CHENG Jie;SHAO Mingli;LU Shuangfang;XUE Haitao;QU Weihua;BAI Liande;WANG Ying;ZHANG Hao(School of Geosciences,China University of Petroleum(East China),Shandong Qingdao 266580,China;Research Institute of Exploration and Development,PetroChina Jilin Oilfield Company,Jilin Songyuan 138001,China;Honggang Oil Production Plant,PetroChina Jilin Oilfield Company,Jilin Songyuan 131301,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石油吉林油田分公司勘探开发研究院,吉林松原138001 [3]中国石油吉林油田分公司红岗采油厂,吉林松原131301

出　　处：《非常规油气》2021年第2期13-23,共11页Unconventional Oil & Gas

基　　金：国家重点自然基金“页岩的成储机理及页岩油的可流动性研究——以松辽盆地、济阳坳陷为例”(41330313)。

摘　　要：目前实施的有机质丰度评价行业标准并不适用于中高演化阶段烃源岩。为了实现此类烃源岩品质的精细分类评价,该文基于烃源岩原始生烃潜量与残余有机碳含量以及残余生烃潜量关系,建立了不同演化阶段烃源岩有机质丰度评价标准,探讨了烃源岩岩性、干酪根类型以及热演化程度对评价指标界限划分的影响。研究表明,中高演化阶段烃源岩丰度指标划分界限明显低于行业标准,总体上表现为随热演化程度的增加评价指标界限逐渐降低,且随着有机质类型变差、评价指标界限逐渐升高的趋势。虽然碳质泥岩有机碳含量和生烃潜量要高于泥岩,属于品质较好的气源岩,但并不一定是较好的生油岩。不同含油气盆地由于烃源岩岩性、有机质类型和热演化程度存在差异,其评价指标界限难以统一,但可借鉴该文方法分别建立,为烃源岩的精细分类评价和有利区带优选提供依据。The existing industry standard of organic matter abundance evaluation is not suitable for the evaluation of source rocks in the middle-high thermal evolution stage.In order to achieve the refined quality evaluation of this kind of source rocks,based on the relationship between original hydrocarbon generation potential and residual organic carbon content,as well as that of original hydrocarbon generation potential and residual hydrocarbon generation potential of source rocks,the evaluation criterion of organic matter abundance of source rocks in different evolution stages was established,and the influence of source rock lithology,kerogen type and thermal evolution degree on the boundary division of evaluation indexes was discussed.The results show that,in the middle-high thermal evolution stage,the boundary of organic matter abundance indexes of source rocks is obviously lower than the industry standard.As a whole,the limit of evaluation index decreases with the increase of thermal evolution degree,and increases with the deterioration of kerogen type.The organic carbon content and hydrocarbon generation potential of carbonaceous mudstone are higher than those of mudstone,maybe they are good gas generating rocks,but not necessarily good oil generating rocks.Due to the differences in lithology,organic matter type and thermal evolution degree of source rocks in different petroliferous basins,it is difficult to unify the evaluation index limits.However,the evaluation criteria of each area can be established by using the method in this paper,which can provide the basis for the refined evaluation of source rocks and the optimization of favorable zones.

关 键 词：烃源岩品质 有机质丰度 热演化程度 生烃潜量 评价标准 

分 类 号：TE122.3[石油与天然气工程—油气勘探]