An Analysis of the Tectonics and Fault of Kezirtag Formation in Bashituo Area, Tarim Basin
YANG Ruizhao1, WANG Ping1, LIU Wei1, CHEN Shuyang2
1. College of Geosciences and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China;2. Exploration and Development Research Institute of Northwestern Oilfield Company, China Petroleum & Chemical Corporation, Urumqi 830011, China
Abstract：Tarim Basin is the largest petroleum potential resource in the west of China. In a co-prospecting project, some wells of the Devonian Kezirtag formation in Bashituo area give encouraging industrial oil flows. The statistical results show that the reservoirs of the target segments in the study area are all located along the faults, and the later tectonic movements produce a large-scale adjustment and reform of the structural form and reservoirs. So the tectonic movement and faulting in the accumulation process play important roles. In order to better understand the accumulation mechanism of the study area, the fault system of the target segments is analyzed. In this paper, the law of the main structural interpretation (the three dimension spread law of fault) and the coherence analysis are applied to the fault interpretation based on the comprehensive calibration of layers and the geological features in the study area. In the interpretation process, the compression, the enlargement, the combination of any lines, the isochronal slices, the coherent slices, the automatic tracking, the seed point tracking and the stereoscopic display of the seismic section are fully used to improve the accuracy and the efficiency of the fault interpretation. The results show that Bashituo's 1 and 2 of the main faults are developed in the study area, and the main active period is from early hercynian to later caledonian. At the same time, a series of grade derived fractures are developed near the main faults. The faults are more developed in the east of the study area, and are gradually weakened towards the west. In view of the tectonics, the Bashituo structure is located in the uplift side of the Bashituo fault, and the reservoir superface structures 1 and 2 with steep south wings are of long axis anticline. This study provides a new way for the future exploration of the study area.
杨瑞召;王萍;刘微;陈叔阳. 塔里木盆地巴什托地区克孜尔塔格组断裂特征分析[J]. , 2011, 29(30): 24-32.
YANG Ruizhao;WANG Ping;LIU Wei;CHEN Shuyang. An Analysis of the Tectonics and Fault of Kezirtag Formation in Bashituo Area, Tarim Basin. , 2011, 29(30): 24-32.
2011, Vol. 29 
