摘要
基于录井、测井、岩心、地球化学等资料，分析了孔二段油气的空间分布特征及其主控因素。研究结果表明，研究区发育构造油藏、岩性油藏和致密油3类油藏。平面上，从湖盆中心向湖盆边缘依次分布致密油、岩性油藏与致密油过渡带、构造油藏；纵向上，构造油藏和岩性油藏主要分布在Ek22和Ek42油组，致密油在孔二段4个油组中均有分布。烃源岩条件控制油藏平面分布，沉积储层发育特征控制油藏空间分布，疏导体系控制油藏富集程度及保存条件。该研究可为沧东凹陷孔二段的进一步勘探提供有利借鉴。
Based on the data like mud logging,well logging,core and geochemistry,this paper analyzed the spatial distribution feature and its main control factors of hydrocarbon in Kong2 Member. The study results showed that structural reservoir,lithologic reservoir and tight oil reservoir were developed in the study area. Horizontally,tight oil- lithologic reservoir and tight oil transitional zone- structural reservoir were distributed from the center to the fringe of the lake basin in turn; vertically,structural reservoir and lithologic reservoir were mainly distributed in Ek_2~2 and Ek_2~4 oil formations,and tight oil was distributed in all the 4 oil formations of Kong2 Member. The source rock condition controlled the lateral distribution of oil reservoir,the developing characteristic of sedimentary reservoir controlled the spatial distribution of oil reservoir,and the transport system controlled the concentration level and preservative conditions of oil reservoir. This study can provide favorable reference for further exploration.
出处
《特种油气藏》
CAS
CSCD
北大核心
2015年第6期14-18,141,共5页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"渤海湾盆地北部油气富集规律与增储领域研究"(2011ZX05006-005)
关键词
沧东凹陷
孔二段
常规油
致密油
空间分布
Cangdong Sag
Kong2 Member
conventional crude
tight oil
spatial distribution
