|本期目录/Table of Contents|

[1]申雯龙,漆滨汶,许广臣,等.基于地震反演的烃源岩有机质丰度预测方法及其在丽水凹陷的应用*[J].中国海上油气,2019,31(03):68-74.[doi:10.11935/j.issn.1673-1506.2019.03.008]
 SHEN Wenlong,QI Binwen,XU Guangchen,et al.The seismic inversion based organic matter abundance prediction method for source rocks and its application in Lishui sag[J].China Offshore Oil and Gas,2019,31(03):68-74.[doi:10.11935/j.issn.1673-1506.2019.03.008]
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基于地震反演的烃源岩有机质丰度预测方法及其在丽水凹陷的应用*()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第31卷
期数:
2019年03期
页码:
68-74
栏目:
东海盆地油气勘探开发成果专辑
出版日期:
2019-06-25

文章信息/Info

Title:
The seismic inversion based organic matter abundance prediction method for source rocks and its application in Lishui sag
文章编号:
1673-1506(2019)03-0068-07
作者:
申雯龙1 漆滨汶1 许广臣2 李 阳2
1.中海石油(中国)有限公司上海分公司 上海 200335; 2.北京师范大学地理科学学部 北京 100875
Author(s):
SHEN Wenlong1 QI Binwen1 XU Guangchen2 LI Yang2
1. CNOOC China Limited, Shanghai Branch, Shanghai 200335, China; 2. Faculty of Geophysical Science, Beijing Normal University, Beijing 100875, China
关键词:
烃源岩预测 地球化学 地球物理 地震反演 总有机碳 有效烃源岩厚度 丽水凹陷
Keywords:
source rocks prediction geochemistry geophysics seismic inversion TOC effective thickness of source rocks Lishui sag
分类号:
TE132.1+4
DOI:
10.11935/j.issn.1673-1506.2019.03.008
文献标志码:
A
摘要:
对于海上少井地区,地震资料在烃源岩评价方面显得尤为重要。综合运用地球化学分析、岩石物理分析、地震反演等手段,建立了一套海上少井地区基于地震反演的总有机碳(TOC)定量计算方法:首先,建立数据驱动的岩石物理模型; 然后,基于实验室数据标定,应用测井数据,采用混合概率密度网络训练,完成单井TOC的预测; 最后,建立烃源岩TOC与弹性参数的映射关系,利用地震反演手段得到主要目的层TOC分布,进而获取有效烃源岩厚度。在东海陆架盆地丽水凹陷的应用结果表明,古新统月桂峰组和灵峰组烃源岩以中等及以上为主(TOC大于0.5%),月桂峰组优质烃源岩主要分布于西次凹,灵峰组下段烃源岩集中于西次凹北部。本文方法可大大提高少井地区烃源岩预测精度,可为油气资源评价和勘探决策提供重要参考依据。
Abstract:
For offshore areas with sparsely deployed wells, seismic data is particularly important in the evaluation of source rocks. Based on measures like geochemical analysis, petrophysical analysis and seismic inversion, a TOC quantitative calculation method based on seismic inversion was established for offshore areas with sparsely deployed wells. Firstly, a data-driven petrophysical model was established; secondly, according to laboratory data calibration, the logging data was applied to complete the prediction of single well TOC by conducting mixed probability density network training; Finally, the mapping relationship between source rocks TOC and elastic parameters was established, and the TOC distribution of main target layers was obtained through seismic inversion, hence achieving the effective thickness of source rocks. The application results in the Lishui sag of the East China Sea Shelf basin indicate that the source rocks in the Palaeocene Yueguifeng and Lingfeng Formations are mainly at medium and above level(TOC is greater than 0.5%); the high-quality source rocks in the Yueguifeng Formation are mainly distributed in the Western subsag, and that of the Lingfeng Formation are concentrated in the northern part of the Western subsag. The method in this paper can greatly improve the source rocks prediction accuracy of areas with sparsely deployed wells, and can provide important references for oil and gas resources evaluation and exploration decision-making.

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备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“东海深层低渗-致密天然气勘探开发技术(编号:2016ZX05027)”部分研究成果。
第一作者简介: 申雯龙,男,工程师,2007年毕业于长江大学矿产普查与勘探专业,获硕士学位,主要从事油气勘探研究工作。地址:上海市长宁区通协路388号中海油大厦A602室(邮编:200335)。E-mail:shenwl@cnooc.com.cn。
更新日期/Last Update: 2019-05-20