摘要
根据原油和油砂抽提物生物标志物的垂向和平面变化规律,结合原油物性变化特征,综合确定研究区原油生物降解程度为2～8级;垂向上生物降解程度是上轻下重,平面上为北轻南重、东轻西重.研究区原油生物降解程度受油水边界类型、古地形面貌、构造格局、不整合面特征及储层温度等地质因素的综合控制.
Based on the alteration of biomarks and physical properties of crude oils and oil sands in vertical and planar, the heavy oil biodegradation extent of Zhenjia Wangzhuang oilfields of Jiyang depression are level 2~8 on the Peters and Moldowan scale. Biodegradation levels of heavy oils become slight gradually from bottom to top in the oil column and from south to north, west to east in the research area. Biodegradation degree of heavy oils in the area are mainly controlled by oil water contact (OWC) type, ancient topographty, structure situation, distribution of unconformable surface and reservoir temperature.
出处
《断块油气田》
CAS
2005年第1期4-7,i001,共5页
Fault-Block Oil & Gas Field
关键词
济阳坳陷
稠油
生物降解程度
原油
储层
不整合面
Heavy oil,Biodegradation level,Geological control factor,Jiyang depression.
