二连盆地赛汉塔拉凹陷原油地球化学特征与油族划分

doi:10.3969/j.issn.1673-8926.2017.02.005

岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 36–43.doi: 10.3969/j.issn.1673-8926.2017.02.005

二连盆地赛汉塔拉凹陷原油地球化学特征与油族划分

王浩^1,2, 王飞宇¹, 降栓奇³, 吴忠³, 邢雅文³, 蓝宝峰³

1. 中国石油大学(北京) 地球科学学院, 北京 102249;
2. 西北大学研究生院, 西安 710069;
3. 中国石油华北油田分公司勘探开发研究院, 河北任丘 062552

收稿日期:2017-01-11 修回日期:2017-02-07 出版日期:2017-03-21 发布日期:2017-03-21
通讯作者: 王飞宇(1963-),男,博士,教授,主要从事石油地质学方面的教学和科研工作。Email:fywang@cup.edu.cn。
作者简介:王浩(1991-),男,中国石油大学(北京)在读硕士研究生,研究方向为石油地质学。地址:(102249)北京市昌平区府学路18号中国石油大学(北京)地球科学学院。Email:herbert_wh@163.com
基金资助:
中国石油天然气股份有限公司重大科技专项“华北油田上产稳产800 万吨关键技术研究与应用”（编号：2014E-35-07）资助

The oil families and their geochemical characteristics in Sanhantala Sag,Erlian Basin

WANG Hao^1,2, WANG Feiyu¹, JIANG Shuanqi³, WU Zhong³, XING Yawen³, LAN Baofeng³

1. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
2. Northwest University, Xi'an 710069, China;
3. Research Institute of Exploration and Development, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China

Received:2017-01-11 Revised:2017-02-07 Online:2017-03-21 Published:2017-03-21

摘要/Abstract

摘要： 赛汉塔拉凹陷是二连盆地富油气凹陷之一，为揭示其原油特征及成因，对典型探井原油进行了原油物性和地球化学分析。原油物性数据显示，赛汉塔拉凹陷原油含硫量低、黏度低，API为28°～39°，总体为低成熟—成熟原油；不同层位原油的生物标志化合物参数差异较小，说明其沉积环境相似，为同一烃源岩不同成熟阶段排出的原油。选取原油伽马蜡烷/C₃₀ 霍烷，C₃₀*/C₂₉Ts，Pr/Ph，重排甾烷/规则甾烷及甾烷异构化等参数进行聚类分析，赛汉塔拉凹陷原油可划分为2 个油族：油族1 为烃源岩在成熟阶段排出的原油，以阿尔善组和腾一段原油为代表；油族2 为烃源岩在成熟阶段早期排出的原油，以腾二段原油为代表。勘探层系应集中在阿尔善组和腾一段储层中。

关键词: 致密砂岩储层, 沉积环境, 成岩作用, 储层评价, 勘探选区

Abstract: The Saihantala Sag is the one of hydrocarbon rich sags in Erlian Basin. The physical properties and geochemisty data of oil samples were analyzed to identify the feature and generation of oil in Saihantala Sag. The physical property data of oil show that the crude oil samples are in low-moderate maturity stage with low viscosity, low sulfur content and API in a range of 28°-39°. New geochemical data have been gathered from crude oil samples, and denote that the crude oil derived from source rocks with similar depositional environment and expelled hydrocarbon in different mature stages. Several variables including ratios of gammacerane/C₃₀ hopane, C30*/ C₂₉ Ts, Pr/Ph,diasteranes/regular steranes, and sterane isomerization parameters, were selected to carry out cluster analysis,and the crude oil in Sanhantala Sag can be divided into two oil families. Oil-family I mainly distributes in Lower Cretaceous K₁ ba, K₁ bt₁ and expelled from source rocks in the late phase of oil window; Oil-family Ⅱ is mainly from K₁ bt₂ and derived from source rocks in the early phase of oil window. The data of crude oil suggest that the exploration zone should be aimed at the reservoirs of the K₁ ba and K₁ bt₁.

Key words: tight sandstone reservoir , sedimentary environments, diagenesis, reservoire valuation, prospecting area

中图分类号:

TE122.1+13

王浩, 王飞宇, 降栓奇, 吴忠, 邢雅文, 蓝宝峰. 二连盆地赛汉塔拉凹陷原油地球化学特征与油族划分[J]. 岩性油气藏, 2017, 29(2): 36–43.

WANG Hao, WANG Feiyu, JIANG Shuanqi, WU Zhong, XING Yawen, LAN Baofeng. The oil families and their geochemical characteristics in Sanhantala Sag,Erlian Basin[J]. Lithologic Reservoirs, 2017, 29(2): 36–43.

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二连盆地赛汉塔拉凹陷原油地球化学特征与油族划分

The oil families and their geochemical characteristics in Sanhantala Sag,Erlian Basin

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