• 责任者：Shi Baohong (Xi’an Shiyou University ; Xi’an 710065 ; China) ; Zhang Yan
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2013
• 卷期：32(1)
• 关键词：浊积岩 ; turbidite ; 成藏模式 ; pool-formed model ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.45-48
• 图表：illus., 13 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

With the help of the data of cores and well loggings, the characteristics of the turbidite and the condi- tions of the reservoir formation are analyzed for the above group of Ordos Basin. The analyzed results show that the sedimentary beddings, structures, sandstone particles and so on of the reservoir group reflect the deep and semi- deep lake facies developed environments of Late Triassic Yanchang Formation. The response characteristics of elec- trical property of Chang 7 Group turbidite display the obvious toothed phenomenon of GR （gamma ray） curve, and moreover show the features of the unstable sedimentation and enormous facies changes on the seismic reflection pro- files. The physical conditions of the turbidite accumulating body are relatively poorer, whose average porosity and permeability are respectively 8.5% and 0. 12 ×10-3μm2, belong to ultra-low porosity and low permeability reser- voir. However, for the body is close to the regions with high-quality source rocks and favorable hydrocarbon en- riched conditions, so it can form reservoirs on a large scale.