鄂尔多斯盆地崇信地区三叠系延长组烃源岩测井评价

杨少春，王娜，李明瑞，喻建

doi:10.11764/j.issn.1672-1926.2013.03.470

天然气地球科学 >

2013 , Vol. 24 >Issue 3: 470 - 476

DOI: https://doi.org/10.11764/j.issn.1672-1926.2013.03.470

天然气地质学

鄂尔多斯盆地崇信地区三叠系延长组烃源岩测井评价

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1.中国石油大学(华东) 地球科学与技术学院，山东青岛 266580; 2.中国石油长庆油田分公司勘探部，陕西西安 710018

杨少春(1962-),男,广西桂林人，教授，主要从事油气地质与油藏描述研究.E-mail：scyang@upc.edu.cn.

收稿日期: 2012-05-22

修回日期: 2013-01-11

网络出版日期: 2013-06-10

基金资助

国家科技重大油气专项课题(编号：2011ZX05009-003)资助.

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The Logging Evaluation of Source Rocks of Triassic Yanchang Formation in Chongxin Area,Ordos Basin

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1.School of Geosciences,China University of Petroleum,Qingdao 266580,China;
2.The Exploration Department of Changqing Oilfield Company,Xi′an 710018,China

Received date: 2012-05-22

Revised date: 2013-01-11

Online published: 2013-06-10

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摘要

在鄂尔多斯盆地崇信地区多用岩心资料来进行烃源岩研究，在取心井少、测试样品有限的情况下，难以表征地下烃源岩段有机碳的实际分布情况。以测井资料为依据，结合岩心分析化验资料，对研究区烃源岩进行研究，利用ΔLogR技术实现了定量计算有机碳含量。改进后的ΔLogR技术与传统方法相比相关度提高了23%，在研究区的应用效果更好。研究发现崇信地区烃源岩质量较好，有机碳含量大部分集中在5%~15%之间，为优质烃源岩。东部地区靠近盆地中心，有机碳含量高，大部分高于5%；西北部遭受剥蚀严重，是全区烃源岩最不发育的地区。

关键词： 鄂尔多斯盆地; 烃源岩; 测井评价; 有机碳

本文引用格式

杨少春，王娜，李明瑞，喻建 . 鄂尔多斯盆地崇信地区三叠系延长组烃源岩测井评价[J]. 天然气地球科学, 2013 , 24(3) : 470 -476 . DOI: 10.11764/j.issn.1672-1926.2013.03.470

Abstract

Core data were commonly used in previous study of source rocks in Chongxin area,Ordos Basin.Constrained by the limited cored wells and samples,the organic carbon distribution pattern of source rocks underground is hard to be characterized.Based on logging data and core analysis and test data,using ΔlogR technology,TOC of the study area can be quantitatively calculated.Compared with traditional methods,correlation of the improved ΔlogR technology increases 23%.Satisfactory results have been reached in the study area.Results show Chongxin area has high quality source rocks,with majority TOCcontents ranged from 5%-15%.The eastern region adjacent to center of basin has high TOC contents,mostly above 5%,while the northwestern region suffered from severe erosion,and source rocks were poorly developed. 

Key words： Ordos Basin; Source rock; Logging evaluation; Organic carbon

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