Study On Ancient Terrain Of South Slope In Jiangling Sag

The oil and gas exploration in Jiangling sag is mainly concentrated in the northcentral part of China.With the improvement of exploration degree,the exploration difficulty is increasing,and the new field should be searched for replacement.Recently,the successful drilling in the south of Jiangling sag shows that the southern slope belt has better exploration potential.Jiangling sag in the south near central syncline hydrocarbon generation,due to the unidirectional source supply,northern south sand body is relatively development,mainly for the beach sand dam and argillaceous dolomite reservoir,drilling,south found sandstone,dolomite,etc.Various types of igneous rock reservoir.At present,there is a high level of drilling and a high level of display level,and two Wells drilled in industrial oil flow,indicating that the southern slope belt has great exploration potential.However,in the early stage,due to the lack of investment in exploration work,the main exploration areas are not analyzed,and the reasons are mainly as follows:(1)limited by the quality of seismic data,the south and Li County sag,the contact relationship of the Jiangnan uplift structure is not clear.(2)Whether there is a southern source and its size in the new groove mouth group.(3)It is not clear that the development and evolution of the fault are related to the distribution of igneous rocks and the formation of the formation.It is of great significance to carry out sedimentary system analysis and to find hidden oil and gas reservoirs during the same sedimentary period.Paleogeomorphology started in the 1950 s and is now being applied in a wide range of disciplines.It was not until the 1970 s that China began to pay serious attention to the study of tectonic landforms.In recent years,some scholars at home and abroad have gained some mature experience in the research of ancient geomorphic restoration.With the progress of computer technology,the restoration of paleogeomorphology has been gradually developed from qualitative to quantitative.At present,based on geological analysis,the recovery of settlement history is the core,and with the help of 3d visualization technology,the restoration of paleogeomorphology is an important way to improve the accuracy and the immediacy of ancient geomorphologic restoration.The 3D visualization technology can help people get the perceptual knowledge of the real basin from the perspective of 3D dynamic,and help people improve the accuracy of sedimentary system analysis.Articles by using a sedimentary thickness,considering different lithology of compaction correction,tilt correction,the fracture evolution,the sequence stratigraphy and tectonic framework on the basis of successfully restored the Jiangling sag of the southern region in the lower segment of Xingouzui formation of fine palaeoceanographic map,provides a theoretical basis for looking for subtle reservoir.