下刚果盆地西北部深水区Albian阶Sendji组原油地球化学特征、成因及分布规律

发布时间：2018-01-11 20:08

本文关键词：下刚果盆地西北部深水区Albian阶Sendji组原油地球化学特征、成因及分布规律　出处：《成都理工大学学报(自然科学版)》2017年04期 　论文类型：期刊论文

更多相关文章： 下刚果盆地 深水区 Sendji组 原油成因

【摘要】：针对下刚果盆地西北部深水区Albian阶Sendji组原油的特征、成因、来源及分布规律等问题,通过对该区7口钻井15个原油样品的物性参数、稳定碳同位素、生物标志化合物等方面的研究,结果表明,Sendji组原油总体为轻质原油,向陆一侧的3个油田中Sendji组原油具有湖相原油的特征,可能来源于盐下湖相烃源岩;向海一侧超深水区MOHO油田Sendji组原油具有海相原油的特征,可能来源于Likouala组上部海相烃源岩。下刚果盆地海域的湖相原油主要分布在近陆一侧的浅水和部分深水区,而海相原油主要分布在向海一侧的深水及超深水区,中间过渡带分布湖相和海相的混合原油。
[Abstract]:In view of the characteristics, origin, source and distribution of crude oil of Albian stage Sendji formation in the deep water area of the northwest of Basic-Congo Basin, the physical parameters of 15 crude oil samples from 7 wells in this area were studied. Studies on stable carbon isotopes and biomarkers show that the crude oil of the Sendji formation is light in general. The crude oil of the Sendji formation in the three oilfields on the first side of the continent has the characteristics of lacustrine oil, which may be derived from the source rocks of the lacustrine facies under salt. The crude oil of the Sendji formation in the MOHO oilfield of the Xianghai side of the ultra-deep water area has the characteristics of marine crude oil. The lacustrine oil in the Lower Congo Basin is mainly distributed in the shallow water and some deep water areas near the first side of the continent. The marine crude oil mainly distributes in the deep water and the ultra deep water area along the sea side, and the mixed oil of the lacustrine facies and the marine facies is distributed in the middle transitional zone.
【作者单位】：中国地质科学院地质力学研究所;中国石油大学地球科学学院;陕西延长石油(集团)有限责任公司研究院;
【基金】：国家重大科技专项(2011ZX05030-001)
【分类号】：P618.13
【正文快照】： 3.陕西延长石油(集团)有限责任公司研究院,西安710075)下刚果盆地早期的勘探主要集中在盆地的陆上和浅水区的盐下湖相层系,原油主要来自下白垩统湖相烃源岩[1-6]。随着深水油气勘探开发技术的日趋成熟,下刚果盆地深水区已成为油气勘探的热点[7-12]。前人研究认为深水区原油主

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