• 责任者：Yuan Hao (School of Resources and Envirunment ; Southwest Petroleum University ; Chengdu 610500 ; China) ; Wang Haifeng
• 刊名：Xinjiang Petroleum Geology
• 出版年：2013
• 卷期：34(2)
• 关键词：风化壳 ; weathering crust ; 油气藏形成 ; reservoir formation ; 柴达木盆地 ; Qaidam Basin
• 页码：p.154-157
• 图表：illus., 11 refs.
• 分类号：1003
• issnNo：ISSN1001-3873
• isbnNo：CN65-1107/TE

Tile formation mechanism and tile forming time of the physical weathering layer in western Qaidam basin are determined by study of paleo-climatic evolution and regional tectonic evolution since Paleogene. The physical weathering layer is formed by dual role of the dry and cold extreme plateau climate and the intense tectonic compression and deformation during the late Himalayan movement. The physical weathering layer, water layer and oil layer in this area constitute obvious ＂triple-section style＂ in vertical. The water level under the physical weathering layer appears diaehronous phenomenon, thus it cannot serve as a marker bed for stratigraphic isochronal correla-tion. In drilling engineering, the physical weathering layer could be easily resulted in circulation loss and borehole collapse for it to reduce seismic signal-to-noise ratio and impact seismic data acquisition.