基于等效介质理论分析川中低孔砂岩的骨架结构分析

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Bibliographic Details
Published in应用地球物理：英文版 Vol. 8; no. 3; pp. 163 - 170
Main Author 晏信飞 姚逢昌 曹宏 巴晶 胡莲莲 杨志芳
Format Journal Article
LanguageEnglish
Published 2011
Subjects
Mori—Tanaka模型
孔隙纵横比，包体
干岩石骨架
致密砂岩
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ISSN1672-7975
1993-0658

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Bibliography:Tight gas sandstone reservoirs in Guang＇an are characterized by wide distribution and low abundance. Sandstone samples from this area usually have low porosity and poor connectivity. We analyze the observed velocity data of tight sandstone samples with the Mori- Tanaka model, and give the sandstone framework physical model in this area based on theory and experiment analysis. The matrix modulus was obtained by an empirical relationship and then the experiment data were compared with the values predicted by the Mori-Tanaka model with different pore shapes. The results revealed that the experiment data were close to the model with low pore aspect ratio. Considering the matrix modulus and pore shape variation, we find that, under the condition of small mineral composition change, the effective pore aspect ratio of these samples increased with porosity evidently.
Yan Xin-Fei, Yao Feng-Chang, Cao Hong, Ba Jing, Hu Lian-Lian, and Yang Zhi-Fang1. Research Institute of Petroleum Exploration and Development, Beijing 100083, China 2. Key Laboratory of Geophysics, PetroChina, Beijing 100083, China. 3. China University of Geosciences （Beijing）, Beijing 100083, China.
11-5212/O
tight sandstone, dry frame, Mori-Tanaka model, pore aspect ratio, inclusion
ISSN:1672-7975
1993-0658