地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->过刊浏览->天勘2021.1


对烃源岩评价的几个问题的深入探讨
Discussion on several problems about source-rock evaluation
石记鹏1,2 赵长毅2 刘海涛2 李传明2
点击:88次 下载:7次
DOI:
作者单位:1. 中国矿业大学(北京)  2. 中国石油勘探开发研究院
中文关键字:烃源岩评价 有机质丰度 有机碳含量 测井资料评价法 排烃效率 干酪根类型 镜质体反射率
英文关键字:Source-rock evaluation; Organic abundance; Total organic carbon (TOC), Well-logging data evaluation method; Kerogen type; Vitrinite reflectance
中文摘要:    烃源岩评价是关系到一个地区有无、有多少油气资源的基础问题,当前烃源岩评价中的一些认识仍欠缺思量:①以
有机碳含量表征烃源岩的丰度忽视了烃源岩地质条件下的非均质性问题,烃源岩丰度的研究需考虑烃源岩的沉积环境,并与测井
资料评价(ΔlgR)法预测有机碳含量结果对比分析;②对于腐泥型或混合型干酪根的烃源岩,排烃效率高时,生烃损耗较大,剩
余有机碳含量参数不宜直接作为烃源岩有机质丰度指标,需要适当恢复其初始有机碳含量;③各种烃源岩类型评价方法的侧重点
不同导致评价结果各异,可以通过不同研究方法相互印证或将干酪根类型数值化的方法解决这一问题;④有机质类型越好的烃源
岩,镜质体反射率所受到的抑制作用越强,采用有机质多组分显微荧光探针分析技术(FAMM)对有机质成熟度进行校正可以消
除抑制作用的影响;上述问题的研究有助于使烃源岩评价结果更接近地质实际。
英文摘要:    To evaluate source rock is a basic issue related to the existence and volume of oil and gas resources in one area. However,there are still some understandings from current source-rock evaluation, which are lack of sufficient thinking. These include that (1) when the total organic carbon (TOC) is used to characterize source-rock abundance, the source-rock heterogeneity under geological conditions is neglected. Therefore, to study the abundance, it is necessary to consider sedimentary environment and carry out comparative analysis with the TOC value predicted by means of well-logging data evaluation method (ΔlgR); (2) for source rocks with type I or type II, their hydrocarbon-generating loss is greater when high efficiency of hydrocarbon expulsion. In this case, one parameter of remaining TOC shall not be directly taken as an organic abundance index of source rocks, and it is necessary to recover its initial TOC appropriately; (3) with different preference, each methods to evaluate source-rock type may bring about various results. And this problem can be solved by virtue of the mutual confirmation of different methods or the quantification of kerogen types; and (4) for some source rocks with better organic-matter type, the vitrinite reflectance is inhibited more. And this inhibition effect can be eliminated by applying organic multi-composition microfluorescence probe analysis (FAMM) to correcting the organic maturity (Ro). In general, to
study above-mentioned problems is conducive to promoting the source-rock evaluation results closer to true geological conditions.
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2021天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第3213074名访问者