摘要
柴达木盆地北缘马北地区不同构造上的原油分两大类。一类是该地区普遍分布的原油,包括马北1井、马北101井和马北3井以及马北2井后期注入的原油,这类原油主要来源于中侏罗统烃源岩,但在成熟度上存在显著差异:马北1井浅层和马北3井原油来源于尕丘凹陷,属成熟原油;马北1井深层和马北101井原油来源于赛什腾凹陷,为高成熟原油。另一类是马北2井生物降解原油,来源于石炭系海陆交互相烃源岩。
Two kinds of crude oils occur in the different structures in Mabei area in northern margin of Qaidam basin. One is the oil broadly distributed in this area, including Mabei-1 Well, Mabei-101 Well, Mabei-3 Well and late filled oil in Mabei-2 Well. Such oils mainly originated from the source rocks of Middle Jurassic with distinction of maturity. The oil from shallow layer in Mabei-1 Well and Mabei-3 Well originated from Gaqiu sag, belonging to matured oil; while the oil from deep layer in Mabei-1 Well and Mabei-101 Well originated from Saishiteng sag, being highly matured oil. The other, biodegraded oil, was found in Mabei-2 Well, originating from transitional facies source rocks of Carboniferous in this area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第5期526-529,共4页
Xinjiang Petroleum Geology
关键词
柴达木盆地
烃源岩
生物标志物
油源对比
Qaidam basin
source rock
biomarker
oil and source rock correlation
