ABSTRACT： Yinger sag is the main petroleum and only the Changshaling oil resource has shaling anticline crest zone was formed above the generative sag in eastern Jiuquau Basin, been found after 60 years prospectin...ABSTRACT： Yinger sag is the main petroleum and only the Changshaling oil resource has shaling anticline crest zone was formed above the generative sag in eastern Jiuquau Basin, been found after 60 years prospecting. Chang- regional uplift, and was slightly affected by crest was identified as a structural transposition zone. Based on analysis of seismic facies, logging facies and seismic inversion technique, it has been demonstrated that anticline crest zone conducts drainage entering basin and dominates sedimentary detritus further dispersing, and the anticline crest zone controls the distribution of sand bodies and the development of sedimentary system consequently. The sequence stratigraphic patterns of multi-step fault belt in Member 3 of Xiagou Formation in Lower Cretaceous in the anticline crest zone is composed of the development of sedimentary facies in plan and distribution of multi-step fault belt sand bodies in spa- tial. This research investigates the sand-control models and sequence patterns, and finally a model of reservoirs in anticline crest zone is identified.展开更多
This study determines the geochemical and depositional environment analysis of the sediments of the Sohnari Member of the Laki Formation, Northern Kirthar Fold Belt of Pakistan. The Energy-Dispersive-X-Ray Spectroscop...This study determines the geochemical and depositional environment analysis of the sediments of the Sohnari Member of the Laki Formation, Northern Kirthar Fold Belt of Pakistan. The Energy-Dispersive-X-Ray Spectroscopy (EDS) technique is used for the detection of major elements and the effects of shifting depositional climatic conditions of six representative samples which were acquired from the Sohnari Member of the Laki Formation at Lakhra area, Sindh, Pakistan. The sedimentological studies clarify that the sediments the Sonahri Member are relatively immature and most migrated in clastic mode. The availability of Silica shows that the Member was formed due to biochemical precipitation and detrital mode and was deposited at a fast rate of sediment deposition under the fluvio-deltaic depositional system. This is also deduced that the rapid rate of sediment deposition might be created a reducing atmosphere and allowing for the mineralization of sulphur.展开更多
基金supported by the Research Institute Exploration and Development,PetroChina Yumen Oilfield Companythe National Natural Science Foundation of China(No.2011ZX05009-002)Open Project Foundation of Key Laboratory of Tectonics and Petroleum Resources,Ministry of Education,China(No.TPR-2013-12)
文摘ABSTRACT： Yinger sag is the main petroleum and only the Changshaling oil resource has shaling anticline crest zone was formed above the generative sag in eastern Jiuquau Basin, been found after 60 years prospecting. Chang- regional uplift, and was slightly affected by crest was identified as a structural transposition zone. Based on analysis of seismic facies, logging facies and seismic inversion technique, it has been demonstrated that anticline crest zone conducts drainage entering basin and dominates sedimentary detritus further dispersing, and the anticline crest zone controls the distribution of sand bodies and the development of sedimentary system consequently. The sequence stratigraphic patterns of multi-step fault belt in Member 3 of Xiagou Formation in Lower Cretaceous in the anticline crest zone is composed of the development of sedimentary facies in plan and distribution of multi-step fault belt sand bodies in spa- tial. This research investigates the sand-control models and sequence patterns, and finally a model of reservoirs in anticline crest zone is identified.
文摘This study determines the geochemical and depositional environment analysis of the sediments of the Sohnari Member of the Laki Formation, Northern Kirthar Fold Belt of Pakistan. The Energy-Dispersive-X-Ray Spectroscopy (EDS) technique is used for the detection of major elements and the effects of shifting depositional climatic conditions of six representative samples which were acquired from the Sohnari Member of the Laki Formation at Lakhra area, Sindh, Pakistan. The sedimentological studies clarify that the sediments the Sonahri Member are relatively immature and most migrated in clastic mode. The availability of Silica shows that the Member was formed due to biochemical precipitation and detrital mode and was deposited at a fast rate of sediment deposition under the fluvio-deltaic depositional system. This is also deduced that the rapid rate of sediment deposition might be created a reducing atmosphere and allowing for the mineralization of sulphur.
