Chemical compaction of deep buried mudstone and its influence on pressure prediction
文献类型：期刊论文
| 作者 | Chao,Li1,2; Xiaorong,Luo1,2; Likuan,Zhang1,2; Yuhong,Lei1,2; Ming,Chen1,2; Lan,Yu3 |
| 刊名 | IOP Conference Series: Earth and Environmental Science
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 600期号:1 |
| ISSN号 | 1755-1307 |
| DOI | 10.1088/1755-1315/600/1/012012 |
| 英文摘要 | Abstract The chemical compaction of mudstones which is dominated by the transformation of clay minerals leads to significant changes in the mineral composition and microstructure of mudstone during process of deep burial. In particular, the transformation of smectite to illite in mudstones results in noticeable impact on the pore pressure formation and the overpressure logging responses. At present, the study about the pressurization mechanism of chemical compaction and the impact on overpressure logging responses is really weak, which made it hard to pore pressure identification and pressure prediction for deep buried formations. Taking the Paleogene Shahejie Formation in the Dongying depression of the Bohai Bay Basin in eastern China as typical case, this paper analyses the characteristics of clay mineral transformation of the Shahejie Formation in the Dongying depression, the logging responses of overpressures, and the influence of chemical compaction on the prediction of pore pressure. The results showed that the chemical compaction of mudstones changes the relationship between the petrophysical properties of mudstone and vertical effective stress and the logging responses of overpressure. The typical characteristic of chemical compaction manifested as density increase continuous with the depth. The normal compaction trends of the different compaction stages are the basis for overpressure mechanisms identification and pore pressure prediction. The depth of the rapid transformation of clay minerals has a good consistency with the top of overpressure zone (2000–2800 m) in Dongying depression, which indicates that the overpressure and its logging responses may be related to the chemical compaction of mudstones. The measured pressure in intervals deeper than 3000 m is closer to the predicted pressure based on the normal compaction trend of chemical compaction. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:1755-1307-600-1-012012 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/98777]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 作者单位 | 1.Innovation Academy of Earth Sciences, Beijing, 100029, China 2.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China 3.Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 100083, China |
| 推荐引用方式 GB/T 7714 | Chao,Li,Xiaorong,Luo,Likuan,Zhang,et al. Chemical compaction of deep buried mudstone and its influence on pressure prediction[J]. IOP Conference Series: Earth and Environmental Science,2020,600(1). |
| APA | Chao,Li,Xiaorong,Luo,Likuan,Zhang,Yuhong,Lei,Ming,Chen,&Lan,Yu.(2020).Chemical compaction of deep buried mudstone and its influence on pressure prediction.IOP Conference Series: Earth and Environmental Science,600(1). |
| MLA | Chao,Li,et al."Chemical compaction of deep buried mudstone and its influence on pressure prediction".IOP Conference Series: Earth and Environmental Science 600.1(2020). |
入库方式： OAI收割
来源：地质与地球物理研究所
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