论文部分内容阅读
黄骅坳陷孔南地区孔二段沉积相类型划分不统一,严重制约了该区的油气深化勘探部署。通过大量岩心观察和测井曲线分析,结合生产实践,总结了孔南地区孔二段沉积特征、沉积相类型和沉积体系平面展布规律,为该区下一步深化勘探开发提供地质依据。研究表明:孔二段主要发育曲流河三角洲、辫状河三角洲、浊积扇和湖泊等4种沉积相类型。平面上沉积相展布规律性较强,以短轴多物源的辫状河三角洲为主,同时发育长轴水系控制的曲流河三角洲沉积体系,形成东、南、西、北部4个沉积体系组展布的沉积格局。
The division of sedimentary facies in the second member of Kongnong Formation in Huanghua Depression is not uniform, which severely restricted the exploration and deployment of oil and gas in this area. Through a large number of core observation and well logging curve analysis, combined with production practice, the sedimentary characteristics, sedimentary facies types and depositional system plane distribution rules of Kong2 Member in Kongnan area are summarized to provide geological basis for further exploration and development in this area. The results show that there are four types of sedimentary facies in Konggou Formation, such as meandering delta, braided delta, turbidite fan and lake. The distribution of sedimentary facies regularity in the plane is strong. The braided river delta mainly consists of short-axis and multi-source rocks. At the same time, meandering river delta sedimentary system controlled by long-axis water system is developed, forming 4 sediments in east, south, west and north System group deposition deposition pattern.