| 古油气水界面恢复方法综述 |
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| 引用本文： | 王显东,姜振学,庞雄奇.古油气水界面恢复方法综述[J].地球科学进展,2003,18(3):412-419. |
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| 作者姓名： | 王显东 姜振学 庞雄奇 |
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| 作者单位： | 石油大学盆地与油藏研究中心,石油天然气成藏机理教育部重点实验室,北京,102249 |
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| 基金项目： | 国家重点基础研究发展规划项目“中国典型叠合盆地油气聚散机理及定量研究”(编号 :G19990 43310 )资助 |
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| 摘 要： | 油气藏油气水界面的变迁记录了油气藏形成以后调整、改造，甚至破坏的历史。恢复各地质历史时期的古油气水界面的位置，可以确定地下烃类流体运聚成藏的时间，恢复流体成藏后的变迁、调整过程，帮助我们认识油气藏形成与分布的规律。给出了古油气水界面恢复的6种方法，并指出了各种方法适用的地质条件、存在问题及发展方向。6种方法中，相对而言，研究含油气包裹体丰度变化来恢复古油气水界面在理论上和实践上都是可行的。
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| 关 键 词： | 古油气水界面 储层自生矿物 沥青 含油气包裹体丰度 |
| 文章编号： | 1001-8166(2003)03-0412-08 |
| 收稿时间： | 2002-06-04 |
| 修稿时间： | 2002年6月4日 |
SUMMARIZATION OF THE PALEOHYDROCARBON-WATER CONTACT RESTORING METHODS |
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| WANG Xian-dong,JIANG Zhen-xue,PANG Xiong-qi.SUMMARIZATION OF THE PALEOHYDROCARBON-WATER CONTACT RESTORING METHODS[J].Advance in Earth Sciences,2003,18(3):412-419. |
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| Authors: | WANG Xian-dong JIANG Zhen-xue PANG Xiong-qi |
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| Institution: | Basin & Reservoir Research Center, University of Petroleum；Key Laboratory of Hydrocarbon Accumulation, Ministry of Education, Beijing 102249,China |
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| Abstract: | Changes of the hydrocarbon-water contact are records of the history of adjustment, reconstruction and even destruction of the reservoir. By restoring the positions of paleohydrocarbon-water contact of petroleum reservoir in different periods in geological history, we can determine the timing of migration，accumulation and adjustment of reservoir, which will help us understand the law of formation and distribution of petroleum. This paper generalizes six methods concerning the restoration of paleohydrocarbon-water contact (by researching the affection of filling and pouring accumulation of oil and gas on the diagenesis of rocks, the variations of tar, the positions of tar mats, the changes of GOI, the isotopic composition of carbonate cement and basin numerical simulation), and shows the suitable geological conditions, problems and development of every method. Among the six methods, due to imperfect isolation between the system of diagenesis and external environment, when we restore the positions of paleohydrocarbon-water contact by researching the affection of filling and pouring accumulation of oil and gas on the diagenesis of rocks and variations of the isotopic composition of carbonate cement, the fresh water of outside can enter system and change the diagenesis conditions of it, which will affect the results of prediction. In addition, though using the positions of tar mats in reservoirs is a more valid method to find paleohydrocarbon-water contacts, not all reservoirs have tar mats and not all tar mats denote the positions of paleohydrocarbon-water contacts. So it is a relatively better way for us to restore paleohydrocarbon-water contact by researching the variation of GOI. These methods involved above all need select samples and do experiments. During this process, many factors, such as the levels of selecting samples, the amount of samples, the qualities of samples, the degree of exactness of measuring instrument, the qualities of measuring crew and so on, will affect the result of experiments, and selecting different algorithms and using different data also will lead to different results in basin numerical simulation. Hence, if we want to obtain the satisfactory results, we need to combine all the methods in the course of practice. |
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| Keywords: | Paleohydrocarbon-water contact Authigenic mineral in reservoir Tar GOI |
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