关键词: 塔贝尔凹陷, 铜钵庙组, 沉积相, 测井相, 堆积样式

Abstract:

Based on the study of core observation，electrofacies，granularity of sediments，spatial distribution of sand body
and modern type of river deposition，we conclude that the study area belongs to shallow water basin which was full of sand
body，and the sand-carrying ability of the water was strong. Sediment supply rate was much higher than the growth rate of
accommodation space，so the target strata accumulation style was characterized by the anti-cycle. In addition，by utilizing core
facies，heavy mineral and ratio data of sandbody and so on，sedimentary facies are predicted again. The results show that fan
delta and lake facies are the two major sedimentary facies in the Lower Cretaceous Tongbomiao Formation starta，and a new
round of drilling has been confirmed. The study of sedimentary facies in Tarbell Depression has laid a foundation for future
exploration.

Key words: Tarbell Depression, Tongbomiao Formation, sedimentary facies, electrofacies, stacking styles