Physical properties and genesis of oil in Shengtuo oilfield in Jiyang depression

Zhu Guangyou; Jin Qiang; Zhou Jianlin; Wang Tongshan; Li Jian; Zhang Linye

doi:10.11743/ogg20040102

Views : 0 下载量: 511 CSCD: 0

PDF
Export
Share
Collection
Album

Physical properties and genesis of oil in Shengtuo oilfield in Jiyang depression
Vol. 25, Issue 1, Pages: 9-13(2004)
Online First：25 February 2004，

Published：2004
DOI： 10.11743/ogg20040102
稿件说明：

移动端阅览

DOI：

Zhu Guangyou, Jin Qiang, Zhou Jianlin, et al. Physical properties and genesis of oil in Shengtuo oilfield in Jiyang depression[J]. 2004, 25(1): 9-13. DOI： 10.11743/ogg20040102.

摘要

依据原油的物理性质可将东营凹陷胜坨地区的原油分为稠油和正常稀油

稠油分布于浅层

是由沙河街组四段烃源岩提供的低熟油遭受次生改造而形成;正常稀油分布于深层的岩性和构造-岩性油气藏中

成熟度较高。按照硫含量

又可分为3类:高含硫原油分布于浅层

油-源对比表明该原油来自于盐湖-咸水湖的沙河街组四段烃源岩;低硫原油分布在深层的沙河街组三段储集层中

原油来自于淡水-半咸水沙河街组三段烃源岩;中等含硫原油则多为混源油。因此硫含量可以作为油源对比的一个有效指标。

Abstract

Crude oil in Shengtuo oilfield in Dongying depression can be classified into heavy oil and normal light oil according to their physical properties.The former

accumulated in shallow reservoirs

are the result of secondary modification of low-maturity oil generated from the source rocks in the 4th member of Shahejie Formation;while the latter

accumulated in deep lithological and structural-lithological reservoirs

have high maturity. They can also be divided into three types according to their sulfur content.Oil with high sulfur content are distributed in shallow reservoirs and generated from source rocks deposited in salt or saline lake in the 4th member of Shahejie Formation; oil with low sulfur content are distributed in the deep 3rd member of Shahejie Formation and are generated from source rocks deposited in freshwater-brackish lake in the 3rd member of Shahejie Formation;while oil with medium sulfur content have mixed sources.Therefore

sulfur content can be used as an effective index for oil source correlation.