- 责任者：Wang Xu (Key Laboratory of Marginal Sea Geology of CAS ; South China Sea Institute of Oceanography ; Chinese Academy of Sciences ; Guangzhou 510301 ; China) ; Zhang Lijuan
- 刊名：Journal of Daqing Petroleum Institute
- 出版年：2011
- 卷期：35(3)
- 关键词：碳酸盐岩储集层 ; carbonate reservoirs ; 塔里木盆地 ; Tarim Basin
- 页码：p.7-12
- 图表：6 illus., 22 refs.
- 分类号：1003
- issnNo：ISSN1000-1891
- isbnNo：CN32-1297/TE
Through the analysis of systematic core observation, determination of thin section, indication faults in seismic scale, interpretation of fracture of micro-scale in logging, homogeneous temperature testing of fluid inclusions, and studying of burial history and porosity evolutional history, it can be inferred that the types of reservoir of Ordovician karst in Shaya uplift can be divided into five categories, which is contemporaneous karst, burial hill karst (seepage karst and groundwater flow karst), shallow burial karst, and deep burial karst respectively. Fault plays an important role in the development of karst reservoir, the functions of which are that the filtering pathways of karstification are provided by faults and faulting zones are also the condensed sections of fractures and karst. The middle Caledonian karsts of Shaya uplift can be divided into early and late stages, the latter of which can be subdivided into epoch one and epoch two characterized by different features. The fact that there is a obvious dislocation between the up and down sections in the erosional interface of vitrinite reflectance-burial depth cross plot line in the top of the Lower Paleozoic strata indicates that the evolutional degree of Lower-Middle Ordovician organisms in Shaya uplift has already been in the ultra-maturation stage before Carboniferous Period. The Ordovician reservoir of Yuqi area is characterized by three hydrocarbon emplacement through the analysis of fluid inclusion, which are the late stage of Yenshan movement, early stage of Himalayan movement, and middle stage of Himalayan movement respectively. The system of hydrocarbon accumulation of Ordovician karst reservoir in Shaya uplift has been subjected to multiple establishing, destroying, reconstruction processes due to influence from multiple tectonic movements, the models of hydrocarbon accumulation of the studying area can be classified into gentle slope accumulation model and high point accumulation model on the basis of the relative location of source rock and differentiation of hydrocarbon migration pathways.