渤南洼陷罗家垦西地区沙三段稠油的形成与分布

发布时间：2018-10-24 10:09

【摘要】：为了弄清渤南洼陷罗家垦西地区沙三段稠油的成因机制与分布规律,从而为该区勘探提供依据,综合运用钻井、测井以及多种分析化验资料对稠油成因与分布进行研究。结果表明:渤南洼陷罗家垦西地区沙三段稠油平面上呈近南北向带状展布,稠油自下而上油性逐渐变稀;流体包裹体均一温度测定以及油源对比结果表明研究区稠油为沙四上亚段烃源岩在东营组这一早成藏期生排的低熟油气,为原生成因;稠油的横、纵向展布以及地化特征有悖于生物降解、水洗、氧化等次生成因稠油的展布规律。原生稠油的预测思路应是成藏期油气输导条件恢复、优势运移方向分析以及运移路径上有利圈闭的预测,据此认为研究区稠油主要分布于高部位的浊积水道砂体与断裂组成的一系列构造岩性圈闭中。
[Abstract]:In order to make clear the formation mechanism and distribution law of heavy oil in the third member of Shahejie formation in Luojiakenxi area of Bonan depression, and to provide the basis for exploration in this area, the origin and distribution of heavy oil are studied by using drilling, logging and many kinds of analytical and laboratory data. The results show that the heavy oil in the third member of Shahejie formation in Luojiakenxi area of Bonan depression is distributed in a nearly north-south direction, and the oil properties of heavy oil gradually become thinner from bottom to top. The results of homogenization temperature determination of fluid inclusions and oil source correlation show that the heavy oil in the study area is low mature oil and gas from the source rocks of the upper submember of Sha 4 in the Dongying formation, which is the primary origin, the cross of the heavy oil, Longitudinal distribution and geochemical characteristics are contrary to the distribution of heavy oil due to biodegradation, washing and oxidation. The prediction of primary heavy oil should be based on the recovery of oil and gas transport conditions, the analysis of the dominant migration direction and the prediction of favorable traps in the migration path during the reservoir forming period. It is concluded that the heavy oil in the study area is mainly distributed in a series of tectonic lithologic traps composed of turbidite channel sand bodies and faults.
【作者单位】：北京中科联华石油科学研究院;中国石化胜利油田分公司勘探开发研究院;
【基金】：中石化股份公司科技攻关项目“济阳坳陷非常规与常规油气藏形成机制统一性与分布相关性研究”(编号:P16005)
【分类号】：P618.13

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