[an error occurred while processing this directive] ������� 2018, 37(2) 539-547,601 DOI:   10.3969/j.issn.1004-5589.2018.02.020  ISSN: 1004-5589 CN: 22-1111/P

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PubMed
Article by Tong L
Article by Hao G
Article by Luo X
Article by Xu H
Article by Li F
Article by Zhang J
Article by Li Z
Article by Xu Y
Article by Chen Y
Article by Wang J
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1. �й����ʵ���� ������Դ��������, ���� 100083;
2. ���ִ�ѧ �����ѧѧԺ, ���� 130061;
3. �й����ʵ���� ��չ�о�����, ���� 100037;
4. �㽭ʡ���ʵ���Ժ, ���� 311203;
5. �й��鱦��ʯ������ҵЭ��, ���� 100013
ժҪ�� ���ι����·��ֵ���ɰ���λ������ʡͭ��������������ز��������߷���Ϸ�����������ɰ�ز�Ϊ٪��ϵ��Ұ��������̽����֤ʵμ��¡��ı�����б����ر��¶������٪��ϵ�Ӱ����ֱ������ɰ���ۼƺ�ȿɴ�29.85 m���꾮��ɰ�ۼƺ�ȴ�11.89 m����󵥲��ȴ�7.9 m��������70 m��dz����ɰ��Ҫ����������٪��ͳ�Ӱ����ֱ����������״�ӵ�����ɰ�ҿ�϶����϶֮�С�����ɰ�������μ��¡���ݻ��Ļ����ϣ�����ɽ���ڹ����˶�̧���γɣ�����̧�������ͳɲ�ģʽ����������Դ�����㣬�о�����ɰ�͵�����Դ��Ϊ3 232.72��t��
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Discovery of Jurassic oil sand in southern Ordos Basin and its accumulation model
TONG Li-hua1, HAO Guo-li2, LUO Xiao-ling3, XU Han-liang2,4, LI Feng1, ZHANG Jia-qiang1, LI Zhao1, XU Yin-bo1, CHEN Yong-heng1, WANG Jie-ning5
1. Oil & Gas Survey, China Geological Survey, Beijing 100083, China;
2. College of Earth Sciences, Jilin University, Changchun 130061, China;
3. Development and Research Center, China Geological Survey, Beijing 100037, China;
4. Zhejiang Institute of Geological Survey, Hangzhou 311203, China;
5. Gems & Jewelry Trade Association of China, Beijing 100013, China
Abstract: The newly discovered oil sand deposit is located in Miaowan area, Tongchuan city, Shaanxi Province. Stratigraphic study and sporopollen assemblage show that the oil sand is of Jurassic. Field investigation and drilling confirm that oil sands of Jurassic Yanan and Zhiluo formations exposed on the northern monoclinal structure of Weibei uplift are 29.85 m thick in total. Drilling data confirm accumulated net oil sand of 11.89 m, with maximum thickness of 7.9 m for single layer. The maximum burial depth for oil sand is 70 m. The sand bodies occurred in braided river channel are favorable reservoirs, and secondary pores and cracks are developed in reservoir sandstone. The oil sand was formed on the basis of Weibei uplift evolution, followed by tectonic deformations in the Yanshanian stages. Oil accumulation model can be summarized as uplifting related migration and accumulation. The preliminary oil sand resources is estimated as 3 232.72×104 t.
Keywords: Ordos Basin   Miaowan area   oil sand   Jurassic   accumulation Model  
�ո����� 2017-06-05 �޻����� 2018-01-11 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2018.02.020
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