| 东营凹陷烃源岩排油机理 |
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| 引用本文： | 张卫海,陈中红,查明,曲江秀.东营凹陷烃源岩排油机理[J].石油学报,2006,27(5):46-50. |
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| 作者姓名： | 张卫海 陈中红 查明 曲江秀 |
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| 作者单位： | 中国石油大学地球资源与信息学院, 山东, 东营, 257061 |
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| 摘 要： | 东营凹陷主力烃源岩生成的油气主要以油相形式从烃源岩中排出,水溶相是未熟油-低熟油初次运移的主要形式,在高成熟阶段,气溶相则为主要运移形式.幕式排油是烃源岩系统演化过程中的一种重要排油方式,此时烃类以混合相形式运移.虽然东营凹陷烃源岩系统在一定时间和空间内具有相对滞排特征,但滞排使超压得到积累和"幕式"释放,因而厚层烃源岩仍具有较高的排油效率,其滞排系数(残留烃与生烃量比值)基本小于0.4.
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| 关 键 词： | 东营凹陷 烃源岩 排油机理 幕式排烃 油气运移 排油效率 |
| 文章编号： | 0253-2697（2006）05-0046-05 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-12-12 |
Hydrocarbon-expulsion mechanism for source rock in Dongying Depression |
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| Zhang Weihai,Chen Zhonghong,Zha Ming,Qu Jiangxiu.Hydrocarbon-expulsion mechanism for source rock in Dongying Depression[J].Acta Petrolei Sinica,2006,27(5):46-50. |
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| Authors: | Zhang Weihai Chen Zhonghong Zha Ming Qu Jiangxiu |
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| Affiliation: | Faculty of Geo-Resources and Information, China University of Petroleum, Dongying 257061, China |
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| Abstract: | The main manner of hydrocarbon expulsion from the main source rocks in Dongying Depression is oil phase,and that in immature phase is water-dissolving phase,and the manner of hydrocarbon expulsion in the high mature phase is gas phase.Episodic expulsion is an important manner in the evolvement of source rocks,and hydrocarbon migration is in the manner of mixed phase.There was "stagnant expulsion" comparatively in the thick mud of Dongying Depression in some time and space,but the over pressure in source rocks could be accumulated,and hydrocarbon could be expulsed in episodic manner as the overpressure exceeded the resistance of source rocks.So the thick mud still had higher expulsion efficiency,and the coefficient of stagnant expulsion was below 0.4. |
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| Keywords: | Dongying Depression source rock hydrocarbon-expulsion mechanism episodic expulsion oilgas migration hydrocar-bon-expulsion efficiency |
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