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卡拉套(Karatau)走滑断层是中亚地区南图尔盖盆地的控盆断层,对盆地油气的运移、聚集和圈闭形成有重要的控制作用.走滑断层的结构识别和准确解释是研究断层相关圈闭的基础.本文利用三维地震资料,通过对走滑断层剖面地质特征的分析,识别了包括花状构造、海豚效应、丝带效应、断层两盘差异化的地层产状等走滑断层典型标志.针对走滑断裂带资料成像差的特点,采用构造导向滤波技术有效的提高了断面之间的地层连续性,突出了主干断层和羽状断层的清晰度.以构造导向滤波数据体为基础的相干体断层属性清楚的表征了走滑断裂带的平面发育特征;相干体属性和构造导向滤波数据体的融合体切片将断面属性和地层属性融合,有利于分析断块结构.卡拉套走滑断裂纵向上为双层花状构造,平面上主干断层多段式分布、分支羽状断层呈雁形排列.
The strike-slip fault of Karatau is a controlled basin fault in the South Tuegel Basin in Central Asia, and plays an important controlling role in hydrocarbon migration, accumulation and trap formation in the basin. Structural identification and accurate interpretation of the strike-slip fault are We study the basis of fault-related traps.Based on the 3D seismic data and the analysis of the geological features of the strike-slip faults, we identify the occurrences of strata that include flower-like structure, dolphin effect, ribbon effect, Fault-typed marker.According to the characteristics of image data of strike-slip faults, the structure-oriented filtering technique is used to effectively improve the continuity of strata between the fractures and to highlight the sharpness of the main fault and pinnate faults.During the construction of the pilot-filtered data volume Based coherence tomography clearly characterize the plane development characteristics of the strike-slip fault zone. The fusion slice of coherence body structure and structure-oriented filter data body merges the section properties with the formation properties, which is helpful to analyze the fault block structure. The strike-slip faults are double-flowered in the longitudinal direction. The main faults on the plane are multi-sectionally distributed, and the branch-pinnate faults are arranged in an anvil-shape.