摘要
皮山北新1在古近系阿尔塔什组膏岩层之下钻遇白云质角砾岩、白云岩储层,并获得油气发现。对于这套未知层系的时代归属存在白垩纪依格孜牙组亦或是古近纪吐依洛克组的争议。通过与周缘的地层对比、结合古生物地层学、元素地球化学资料,综合分析认为:此白云质角砾岩为来自白垩系依格孜牙组的近原地角砾岩在吐依洛克组沉积期快速堆积的产物,应归属于吐依洛克组,重新厘定界限为7086 m。
The well PBX1 gets the oil and gas discovery in the dolomitic breccia and dolomite reservoir under the cap of the E1a gypsum rock. There are some disputes about the age of these new layers between K1y and E1t. Through the stratigraphic comparison with the periphery, the paleontological stratigraphy and the elemental geochemical data, it is concluded that the dolomitic breccia is the product of the rapid accumulation that the breccia comes from the K1y and sedimentary in the period of the E1t formation, so it should be the E1t, and the well depth is 7086 m.
出处
《地球科学前沿（汉斯）》
2019年第12期1310-1318,共9页
Advances in Geosciences
基金
本研究为受中石化科技部项目“巴麦地区油气成藏条件与勘探方向研究,编号P15090”、国家重大专项“海相碳酸盐岩油气动态成藏、富集规律,编号:2011ZX05005-001-003”资助。
