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Fracture Characteristics of Archean-Strata in the Area of Western Shandong and Jiyang Depression and the Meaning for Oil-gas Reservoir Bed |
LI Shoujun1,2, HE Miao1,2, ZHAO Xiuli1, JIN Aiwen2, YUAN Liyuan2, YIN Tiantao2 |
1. Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China;2. College of Geological Science & Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China |
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Abstract: The fracture characteristics of Archean-Strata are studied based on the outcrops, drilling, well test, and log data in the areas of Jiyang Depression and Western Shandong. Then the qualitative and quantitative analyses on the characteristics are conducted through field work in the similar outcrop area, stratigraphic division and core comparison, thin section authentication, rock mechanics test, and finite element method. Finally, the main factors that control the fracture development in the study areas, such as lithology, tectonic stress, and overlying strata, are discussed. The fracture description parameters are obtained and they play a directive role for revealing the distribution of reservoir space of Archean-Strata in Jiyang depression.
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Received: 01 November 2011
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