摘要
通过对冀中坳陷上第三系油气藏成藏条件的系统分析认为,馆陶组和明化镇组下段产油层段以曲流河沉积为主,河道砂体砂层厚度大、物性好,是有利的储集体;油气主要来自下第三系沙河街组一段和三段,油气供给较为丰富.上第三系油层具有埋藏浅、产量高、开发效果好等特征.油气藏可分为4类6种.油气聚集成藏的主控因素是油气资源的丰富程度、供油断层发育程度、圈闭位置、古河道砂岩储集性能及保存条件.油气分布于逆牵引背斜带、(凹陷内)挤压背斜带、披覆背斜带和斜坡带等4种油气聚集带.
Through a systematic analysis of hydrocarbon accumulation conditions for Neogene sequence, Jizhong depression, it is recognized that oil-producing intervals in Guantao Formation and Lower Minghuazhen Formation are mainly meandering stream deposits, in which thick channel sandbody with good petrophysical properties are favorable reservoirs. Oil and gas are principally from richer Sha-1 and Sha-3 Member of Paleogene Shahejie Formation. The Neogene oil-bearing intervals are characterized by shallow burial, high production and effective development. Hydrocarbon pools can be divided into 4 types and 6 species, and hydrocarbon accumulation is predominantly controlled by resource abundance, development of oil- migration faults, trap location, reservoir properties of channel sandstone and their preservation. There are four types of Neogene hydrocarbon accumulation zones, i. e. rollover anticlines, compressed anticlines (within sags), drape anticlines and slope.
出处
《中国海上油气（地质）》
2001年第1期56-60,共5页
China Offshore Oil and Gas(Geology)
关键词
冀中坳陷
上第三系
油气藏
成藏条件
分布
Jizhong depression
Neogene
hydrocarbon accumulation
distribution
