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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第33卷

期数:

2011年第02期

页码:

142-145,206

栏目:

基础地质与矿产地质

出版日期:

2011-06-15

文章信息/Info

Title:

Study on the Property and Origin of Crude Oil of Yanchang Formation in Jiyuan Oilfield, Ordos Basin

文章编号:

1672-6561(2011)02-0142-04

作者:

郑荣才¹; 牛小兵²; 梁晓伟²; 王成玉²; 辛红刚²

1.成都理工大学 油气藏地质及开发工程国家重点实验室,四川 成都 610059; 2.中国石油天然气集团公司长庆油田分公司 勘探开发研究院,陕西 西安 710018

Author(s):

ZHENG Rong-cai¹; NIU Xiao-bing²; LIANG Xiao-wei²; WANG Cheng-yu²; XIN Hong-gang²

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology,Chengdu 610059, Sichuan, China; 2. Institute of Petroleum Exploration and Development, Changqing OilfieldBranch Company, China National Petroleum C

关键词:

鄂尔多斯盆地; 姬塬油田; 延长组; 原油性质; 烃源岩; 油源对比

Keywords:

Ordos Basin;  Jiyuan Oilfield;  Yanchang Formation;  property of crude oil;  hydrocarbon source rock;  oil source correlation

分类号:

P618.13;TE122.1

DOI:

-

文献标志码:

A

摘要:

通过原油与油田水物理性质、原油与烃源岩族组成、饱和烃气相色谱以及萜烷与甾烷等生物标志化合物特征的多项地球化学指标对比,表明鄂尔多斯盆地姬塬油田延长组长8、长6、长4+5等油层组原油性质较为复杂,其成熟度、母源氧化-还原环境及母质类型等方面存在显著差异。烃源岩评价也显示长9、长8、长7、长6、长4+5段的暗色泥岩有机质质量和类型有所差别,但均具备生排烃能力。油源对比结果进一步证明:成藏过程存在多套油源混源供油的成藏效应,其中长8油层组原油主要来源于长7—长8段烃源岩;长6油层组原油主要来源于长7—长6段烃源岩;长4+5油层组原油存在长7、长6及长4+5段多源烃源岩的贡献。

Abstract:

Based on the comparison of multiple physicochemical properties including the property of crude oil and oilfield water, group composition of crude oil and hydrocarbon source rock, gas phase chromatography of saturated hydrocarbon and the characteristics of terpane, sterane and other biomarkers, the results showed that the properties of crude oil were especially complex for Chang-4+5, Chang-6 and Chang-8 of Yanchang Formation in Jiyuan Oilfield, Ordos Basin; there were obvious differences in the maturity, source rock depositional redox environment and type. The appraisal of hydrocarbon source rock indicated that the quality and type of organic matter of dark mudstone for Chang-4+5, Chang-6, Chang-7,Chang-8 and Chang-9 of Yanchang Formation were different, but all had the ability of hydrocarbon generation and expulsion. The comparison of oil sources further proved that there were multiple accumulation effects of oil supply with mixed sources in the accumulation process; the crude oil of Chang-8 came from hydrocarbon source rock of Chang-7-Chang-8; the crude oil of Chang-6 came from hydrocarbon source rock of Chang-7-Chang-6; the crude oil of Chang-4+5 came from multiple hydrocarbon source rocks of Chang-7, Chang-6 and Chang-4+5.

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备注/Memo

备注/Memo:

收稿日期:2011-01-13
基金项目: 国家科技重大专项基金项目(2008ZX05000-003-01)
作者简介: 郑荣才(1950-),男,上海人,教授,博士研究生导师,从事沉积学、层序地层学和石油地质学研究。E-mail:zhengrc@cdut.edu.cn

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