天然气勘探

烃源岩测井响应特征及识别评价方法

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  • 1.中国石油天然气股份有限公司杭州地质研究院,浙江 杭州 310023; 2.中国石油集团杭州地质研究所,浙江 杭州 310023
杨涛涛(1981-),男,陕西西安人,工程师,硕士,主要从事海域油气勘探与综合评价工作. E-mail:yangtt_hz@petrochina.com.cn.

收稿日期: 2012-08-08

  修回日期: 2012-09-29

  网络出版日期: 2013-04-10

基金资助

国家“973”项目(编号:2009CB219406);国家科技重大专项(编号:2008ZX05025-004)联合资助.

The Logging Features and Identification Methods of Source Rock

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  • 1.PetroChina Hangzhou Research Institute of Geology,Hangzhou 310023,China; 2.CNPC Hangzhou Research Institute of Geology,Hangzhou 310023,China

Received date: 2012-08-08

  Revised date: 2012-09-29

  Online published: 2013-04-10

摘要

烃源岩识别评价是油气地质研究的基础工作之一,是石油地质学研究的热点。常规的岩心样品分析虽能提供准确的烃源岩地球化学指标,但受样品来源和分析化验经费的限制,单口井往往很难获得连续的地球化学分析数据,难以满足精细勘探的需要。测井信息纵向分辨率高、资料连续准确,且烃源岩在测井曲线上具有明显的响应特征。通过对前人烃源岩测井识别评价研究成果的充分调研,详细地阐述了烃源岩在自然伽马、电阻率、声波时差、密度和中子等测井曲线上的响应特征,基于此开展烃源岩测井识别评价。为不断提高烃源岩测井评价精度,国内外学者研究了测井信息与烃源岩定量化学指标的对应关系。系统介绍了多种基于测井资料的烃源岩定量评价方法,并建立了相应的计算模型.通过该模型可直接获取烃源岩的有机质丰度等参数,在实际应用中取得了不错的效果。

本文引用格式

杨涛涛,范国章,吕福亮,王彬,吴敬武,鲁银涛 . 烃源岩测井响应特征及识别评价方法[J]. 天然气地球科学, 2013 , 24(2) : 414 -422 . DOI: 10.11764/j.issn.1672-1926.2013.02.414

Abstract

Identification and evaluation of source rock is a fundamental work of hydrocarbon geological study,which is a hot spot of explorationist.Core sample analysis can provide accurate geochemical index of hydrocarbon source rocks,but it′s difficult to obtain continuous geochemical data for a single well due to limitations on sample sources and analysis charges.Log information has high resolution on vertical with continuous and accurate data,and source rock has obvious reflection characteristics on log data.The response characteristics of natural gamma,resistivity,interval transit time,density,and neutron for source rock were illustrated in detail,and log identification for source rock was carried out.In order to improve the precision of log evaluation for source rock,the quantitative evaluation methods of source rock based on log data were systematically introduced,and the corresponding computation model was set up.The organic matter richness of source rock can be obtained,and good effect was achieved in the application.

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