The application of high-precision aeromagnetic survey to the investigation of oil-gas geological structure in Southwest Tarim Basin
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摘要: 受勘探难度大和地震品质差等诸多影响,塔里木盆地西南地区(简称塔西南)的油气资源勘探历经数十年,至今尚未获得实质性重大突破。本文根据近年来在塔西南实测的高精度无人机航空磁测数据资料,针对盆地的基底结构、凹陷分布及特征,主要断裂构造及其对油气运移、聚集的控制规律,局部异常与含油气有利圈闭构造及其分布特征等与油气成藏相关的地质问题进行了探讨,取得了一些认识,成果可为塔西南进一步开展油气勘探战略选区及深部资源评价提供了重要参考。Abstract: Influenced by the difficulty of exploration and poor seismic quality, the exploration of oil-gas resources in the southwest of Tarim Basin has not achieved a substantial breakthrough after decades of work. Based on the latest high-precision aeromagnetic data obtained in Southwest Tarim Basin in recent years, this paper discusses the geological problems related to oil-gas accumulation, such as basement structure of basin, distribution and characteristics of depressions, main fault structures and their controlling rules for oil-gas migration and accumulation, local anomalies and favorable local structures of oil-gas as well as their distribution characteristics. The results of the study can provide important reference for the further strategic selection of oil-gas exploration and deep resource evaluation in Southwest Tarim Basin.
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