【摘要】 通过野外露头、钻井岩心薄片的观察,在塔里木盆地东部辨识出寒武系大量碳酸盐深水重力流沉积,并划分出斜坡角砾岩、高密度钙屑浊积岩、低密度钙屑浊积岩等三种类型。通过单井厚度标定、地震相分析和区域成图,平面上沿斜坡发育较大规模碳酸盐深水重力流沉积,宽度达40~80 km,厚度达50~150 m。分析测试和测井解释资料表明,重力流(特别是高密度浊积岩)可以发育厚度较大的良好储层。塔东寒武系斜坡区碳酸盐深水重力流油气显示丰富,是值得深入探索的勘探领域。更多还原

【Abstract】 The observation and research results of the outcrops and drilling cores show that Cambrian deepwater carbonate gravity flow depositional rock is widely distributed in the eastern part of Tarim Basin. The gravity flow rock can be divided into slope breccia, high-density calcarenaceous turbidite and low-density calcarenaceous turbidite. By means of marking single well thickness, analyzing seismic facies and drawing regional maps, it is shown that the slope breccia and the high-density calcarenaceous turbidite are distributed in a large scale of 40 ~80km of width and 50~150m of thickness along the Upper Cambrian slope. According to the core analysis and log interpretation, a certain thickness of good reservoirs may develop in the strata of gravity flow depositional rock,especially in the strata of high density turbidite. The fact of numerous oil and gas shows in the Upper Cambrian slope has revealed that the deepwater carbonate gravity flow rock is a domain worthy to prospect.更多还原