摘要
环江油田是天环坳陷区所发现的大型油田之一,其构造位置低,油层埋藏深,油藏隐蔽性较强,勘探开发难度较大。为了扩大开发规模,加快上产的速度,本文通过对本地区长8成藏条件分析,认为长8储层具多物源的特点,在沉积体系上属西北方向的浅水三角洲前缘沉积,发育以水下分流河道为骨架的沉积微相,沉积的方向性强,这是成藏的基本条件。与长8相邻的长7储层是主要的烃源岩,泥岩厚度大,是盆地西北部的坳陷中心。在构造史上,"早隆晚凹"的构造反转,是造成长8油藏得以运聚成藏的特殊条件。而基底断裂造成的裂缝对沟通油源至关重要。
Huanjiang oilfield is a central depression area that is one of the large oil fields,the tectonic location of low,deep burial depth of reservoir, reservoir concealment,exploration development difficulty is greater.In order to expand the scale of development,accelerate the speed of production,based on the local of Chang 8reservoir forming conditions of Chang 8reservoir, with multiple source characteristics, in the sedimentary system is northwest of the shallow water delta front deposition,development to underwater distributary channel for the skeleton facies,sedimentary direction strong,this is the basic conditions of hydrocarbon accumulation.And Chang 8 adjacent Chang 7 reservoir is the main hydrocarbon source rock,mudstone thickness,is in the northwestern depression center.In the structure of history,＂early lung late concave＂tectonic inversion,is long 8reservoir has been caused by the accumulation of special conditions. While the basal fracture cracks due to oil source critical communication.
出处
《石油化工应用》
CAS
2013年第2期55-59,共5页
Petrochemical Industry Application
关键词
长8油藏
控制因素
Chang 8 reservoir
control factors
