Evaluation and Forecast Methods of Stratigraphic Reservoir of Volcanic Weathering Crust—Taking Carboniferous Formation in Northern Xinjiang as an Example

详细信息   

• 责任者：Zou Caineng (Research Institute of Petroleum Exploration & Development ; PetroChina ; Beijing 100083 ; China) ; Hou Lianhua
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(2)
• 关键词：火成岩油气藏 ; igneous reservoir ; 地球物理勘探 ; geophysical exploration ; 新疆 ; Xinjiang
• 页码：p.388-400
• 图表：10 illus., 1 table, 42 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

To cope with the strong heterogeneity of stratigraphic reservoir of volcanic weathering crust, and the consequent difficulty in prediction and low exploratory success ratio, the gravity-magnitude-electrical stripping and inversion of bedding continuation signal enhancing were used to predict the distribution of volcanic rock. Based on the lithologic sequence of a single volcanic eruption and the distribution pattern of reservoir, the reservoir inversion of wave impedance was developed which mainly focuses on the secondary dissolution porosity and fracture. With this inversion, the distribution of favorable superimposed reservoir formed by weathering and leaching during different volcanic eruptions was effectively predicted. Oil-gas bearing property was predicted by the combination of lithology, reservoir prediction, amplitude attenuation property and prediction of absorption coefficient difference.