高集油田高6断块E1f1-E1f2沉积相研究

以取心井单井相标志的精细研究为基础,结合区域地质背景、沉积特征等,确定高集油田高6断块阜宁组一段(E1f1)-阜宁组二段(E1f2)分别为一套三角洲前缘和滨浅湖亚相沉积:三角洲前缘中发育的微相类型包括水下分流河道、河口坝、远砂坝、间湾、席状砂,滨浅湖中则识别出滨浅湖砂坝、滨浅湖滩砂、灰岩、浅湖泥4种沉积微相。对沉积微相平、剖面展布特征进行研究,研究发现:垂向上不同砂组在区内沉积相展布具有一定的时空演化规律;水下分流河道、河口坝、生物灰岩及滨浅湖砂坝微相是油气的富集区和剩余油挖潜的最有利部位。

Study on sedmentary facies for the First-Second Member of Funing Formation of Gao 6 fault block in Gaoji Oilfield

On the basis of fine study on single coring wells facies marks,in combination with regional geology background and sedimentary characteristics, the First-Second Member of Funing Formation of Gao 6 fault block in Gaoji Oilfield have been have been considered to be deposited in delta front and shore or shallow lake subfacies respectively: in delta front facies , five sedimentary microfacies, underwater distributary channel, mouth bar, distal bar, under-water interdistributary bay and sheet sand,are included; in shore or shallow lake facies, four sedimentary microfacies, shore or shallow lake sand bars, shore or shallow lake beach sand Limestone and shallow lake muds ,have been identified out. With the Study of sedimentary microfacies distribution characteristics of plane and profile,It shows that the distribution of sedimentary facies of different sand group in vertical in the area has certain space-time evolution laws.and that the underwater distributary channel, mouth bar, biolithite limestone and shore or shallow lake sand bars are favorable for hydrocarbon enrichment and the most potential tapping of remaining oi.