Characteristics and migration-accumulation directions of sulfur-rich oils in  BZ35/36 structures in Huanghekou sag, Bohai Bay Basin

doi:10.7623/syxb201301005

Editorial office of ACTA PETROLEI SINICA ›› 2013, Vol. 34 ›› Issue (1): 37-46.DOI: 10.7623/syxb201301005

• Petroleum Exploration • Previous Articles Next Articles

Characteristics and migration-accumulation directions of sulfur-rich oils in BZ35/36 structures in Huanghekou sag, Bohai Bay Basin

FU Qiang 1　 LIU Binbin 1 　XIA Qinglong 2 　ZHOU Donghong 2 　FU Xiaowei 1 　GUO Tao 1　 MA Wenrui 1

Received:2012-07-01 Revised:2012-10-18 Online:2013-01-25 Published:2013-04-09

黄河口凹陷BZ35/36构造高硫原油特征及运聚方向

傅强 1 　刘彬彬 1　夏庆龙 2　周东红 3 　付晓伟 1 　郭涛 1 　马文睿 1

1. 同济大学海洋与地球科学学院上海 200092;2. 中海石油有限公司天津分公司天津塘沽 300452; 3. 中海石油有限公司天津分公司勘探开发研究院天津塘沽 300452

通讯作者: 傅强
作者简介:傅强，男，1964年10月生，1986年获成都地质学院学士学位，1997年获成都理工大学博士学位，现为同济大学海洋与地球科学学院教授、博士生导师，主要从事石油与天然气地质教学与科研工作。
基金资助:
国家重大科技专项（2011ZX05023-001-012）资助。

Abstract

Abstract:

Crude oils from Dongying and Shahejie Formations of BZ35/36 structures in Huanghekou sag, Bohai Bay Basin are characterized by high density, high viscosity and high sulfur, these physical properties and geochemical features are quite different from crude oils in other structures of Huanghekou sag. The comparison and analysis of biomarkers, including Pr/Ph, C₂₄Te/C₂₆TT, C₂₉20S/（20S+20R） and C₂₉ββ/（ββ+αα） ratios, and gammacerane, show that sulfur-rich oils in these two structures have an affinity with the high-sulfur oil in Miaoxi sag adjacent to the eastern Huanghekou sag. The high-sulfur low-maturity crude oil of Miaoxi sag was charging from northeast to southwest, while the low-sulfur mature crude oil of Huanghekou sag was charging in the opposite direction. Because these sags had comparatively high hydrocarbon generative potential, crude oils derived from them gathered in BZ35/36 structures that lie in the hydrocarbon charging path. By analogy with the same type of high-sulfur crude oils, a preliminary conclusion can be drawn that source rocks of the sulfur-rich crude oils are formed in a dry climate and strongly reducing saline lake with abundant living beings.

Key words: sulfur-rich oil, biomarker, hydrocarbon charging, hydrocarbon source, Huanghekou sag

摘要：

渤海湾盆地黄河口凹陷BZ36构造沙河街组、东营组及BZ35构造东营组产出中-重质高硫原油，其物理性质及地球化学特征与黄河口凹陷其他构造所产原油有显著差别。通过姥/植比、伽马蜡烷、C₂₄Te/C₂₆TT、C₂₉20S/(20S+20R)、C₂₉ββ/(ββ+αα)等生物标志化合物的对比分析，认为上述2个构造所产高硫原油与紧邻黄河口凹陷东部的庙西凹陷高硫低熟原油具有亲缘性。庙西凹陷的高硫低熟原油由NE向SW方向充注，黄河口凹陷的低硫成熟原油则向相反方向充注，由于2个凹陷均有较强的生烃潜力，处于2个凹陷油气充注路径上的BZ36、BZ35构造聚集了来自黄河口凹陷与庙西凹陷烃源岩生成的原油。通过与同类型高硫原油的类比，初步认为该类型高硫低熟原油的母岩形成于干旱强还原及生物繁茂的盐湖。

关键词: 高硫原油, 生物标志化合物, 油气充注, 油源, 黄河口凹陷

FU Qiang　LIU Binbin　XIA Qinglong　ZHOU Donghong　FU Xiaowei　GUO Tao　MA Wenru. Characteristics and migration-accumulation directions of sulfur-rich oils in BZ35/36 structures in Huanghekou sag, Bohai Bay Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(1): 37-46.

傅　强　刘彬彬　夏庆龙　周东红　付晓伟　郭　涛　马文睿 . 黄河口凹陷BZ35/36构造高硫原油特征及运聚方向[J]. 石油学报, 2013, 34(1): 37-46.

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Characteristics and migration-accumulation directions of sulfur-rich oils in BZ35/36 structures in Huanghekou sag, Bohai Bay Basin

黄河口凹陷BZ35/36构造高硫原油特征及运聚方向

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