石油与天然气地质 ›› 2014, Vol. 35 ›› Issue (3): 350-358.doi: 10.11743/ogg20140308

• 油气地质 • 上一篇    下一篇

流体包裹体技术在春风油田特超稠油成藏研究中的应用

席伟军1, 张枝焕2, 徐新宇3, 史翠娥4   

  1. 1. 中国石化 胜利油田分公司 新春采油厂, 山东 东营 257001;
    2. 中国石油大学 油气资源与探测国家重点实验室, 北京 102249;
    3. 中国石油 海外勘探开发公司, 北京, 100034;
    4. 中国石化 胜利油田分公司 东胜公司, 山东 东营 257001
  • 收稿日期:2013-12-20 修回日期:2014-05-20 出版日期:2014-06-08 发布日期:2014-07-11
  • 作者简介:席伟军（1985- ），男，工程师，油气勘探与油气地球化学。E-mail：xiweijun.slyt@sinopec.com.
  • 基金资助:

    国家科技重大专项（2011ZX05002-002，2011ZX05002-006）。

Application of fluid inclusion techniques to the study of super-heavy oil accumulation in Chunfeng oilfield,Junggar Basin

Xi Weijun1, Zhang Zhihuan2, Xu Xinyu3, Shi Cui'e4   

  1. 1. Xinchun Oil Plant, Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257001, China;
    2. State Key Laboratory of Petroleum Source and Prospecting, China University of Petroleum, Beijing 102249, China;
    3. PetroChina International Exploration & Development Company, Beijing 100034, China;
    4. Dongsheng Company, Shengli Oilfield Company, SINOPEC, Dongying, Shandong 257001, China
  • Received:2013-12-20 Revised:2014-05-20 Online:2014-06-08 Published:2014-07-11

PDF (PC)

435

被引次数

6

摘要：

春风油田位于准噶尔盆地西北缘车排子凸起上，稠油油藏具有埋藏浅、分布层位多、原油密度高、粘度大的特征，原油的生物标志化合物普遍降解严重，导致该区的油源对比及成藏研究成为难点。针对春风油田稠油储层开展了流体包裹体主成分生标特征、包裹体光学特性、产状特征、均一化温度及盐度等实验分析，同时进行了稠油油源对比、成藏期次及成藏演化分析，研究认为：（1）稠油主要来源于昌吉凹陷二叠系烃源岩，油气在该区聚集成藏前就已经遭受了轻微的生物降解作用，后期又继续遭受降解，部分井区还存在后期充注现象；（2）三叠纪末期，中、下二叠统烃源岩已进入生油高峰，生成的油气在车拐断裂带聚集成藏；白垩纪末期至古近纪的燕山-喜马拉雅早期的构造运动，导致车拐断裂带的油气藏遭受改造和破坏，油气向车排子凸起运移，并在侏罗系和白垩系储层中聚集成藏，但由于研究区地层埋深小，保存条件差，油气普遍遭受严重的生物降解作用而形成稠油；新近纪以来，构造运动导致车拐断裂带油气藏进一步调整改造，油气向车排子凸起运移，在春风油田的有利圈闭聚集成藏，后期又遭受生物降解形成现今的稠油油藏。

关键词: 包裹体, 油源对比, 成藏演化, 特超稠油, 春风油田, 准噶尔盆地

Abstract:

The Chunfeng oilfield is located in the Chepaizi uplift of the northwestern margin of Junggar Basin.The heavy oil reservoir is characterized by shallow burial,multiple oil-bearing layers,high oil density and viscosity.The biomarkers generally experienced strong degradation,making it hard to perform oil-source correlation and study of oil accumulation.In this paper,we used experimental methods to analyze fluid inclusion's composition,optical characteristics,occurrence features,homogenization temperature and salinity,performed oil-source correlation,and studied the accumulation period and process.The results show that the heavy oil was mainly sourced from the Permian source rocks in the Changji Depression,and the oil has experienced a slight biodegradation before accumulation and strong degradation later.Late charging also occurs in some wellblocks.At the end of Triassic,the Mid-Lower Permian source rocks had entered into peak oil generation and the oil generated from the Permian migrated to and accumulated in the Cheguai faulted belt.The tectonic movement during the end of Cretaceous to Paleogene destroyed and reconstructed the reservoir in the Cheguai faulted belt,and the hydrocarbons migrated to the Chepaizi uplift and accumulated in the Jurassic and Cretaceous reservoirs.Because of the poor preservation conditions,the oil commonly experienced strong biodegradation and was turned into heavy oil.Since the Neogene,the tectonic movement further adjusted the reservoirs in the Cheguai faulted belt,oil and gas migrated to Chepaizi uplift and accumulated in the favorable traps in Chunfeng oilfield and was biodegraded later into heavy oil reservoir.

Key words: fluid inclusion, oil-source correlation, accumulation evolution, super-heavy oil, Chunfeng oilfield, Junggar Basin

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