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地质力学学报:1997,3(1):81-87
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辽河科尔康油田断裂分形特征与油气关系
(1.中国地质科学院地质力学研究所;2.核工业部北京地质研究院)
FRACTAL CHARACTERISTICS OF FAULT SYSTEMS AND ITS RELATION TO OIL-GAS TRAPS IN KERKANG OIL FIELD OF LIAOHE BASIN
(1.Institute of Geomechanics, CAGS;2.Beijing Research Institute of Uranium Geology)
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中文摘要: 本文运用分形理论对张强凹陷科尔康油田沙海组下段顶(T1)、九佛堂组顶(T2)和义县组顶(T3)3个反射层断裂系统的分布特征进行了研究,发现在标尺范围(8-0.5cm)内断裂系统具有良好的统计自相似性,不同的研究对象具有不同的分维值(D),而分维值的大小体现了断裂系展布的复杂性。断裂的规模、数目及在相同标尺下的面密度直接影响数盒子数法计算的分维值,不同子区域断裂系统的分维值D与其断裂所占断裂总数的百分比呈良好的正相关关系。不同储集类型的子区域对比表明,东区沙海组下段顶(T1)分维值高于西区,而西区义县组顶(T3)分维值高于东区。与油田已知油气分布特征对比后,发现并证实油田内子区域分维值大,油田丰度(含油面积或流体产能)就大。含油气盆地这种内在对应关系,为研究油气聚集和分布规律、评价和预测油气田提供了一种新思路.
中文关键词: 分形  断裂系统  油气  科尔康油田
Abstract:Geometric characteristics of the fault system as indicated by the three seismic reflection layers T1,T1,T1 are studied by using fractal theory in Kerkang oil filed of Zhangqiang depression.As a result,the authors find that these fault systems are statistically self-similar within the scale range studied (r=0.5cm to 8cm).But different fault systems have different fractal dimension values D that reflect the complexity of their geometry.The size,number and spacing of faults within the same scale range may affect the magnitude of D obtained by box-counting method.There is a good correlation between D and the percentage of the individual fault system in different subregions divided.A comparision of the results of different subregions of different reservoir types shows that D value in the east subregion is higher than that in the west subregion for T1,and that the D value in west subregion is slightly higher than that in the east subregion for T1.It is shown that the higher the D value,the larger the oil-gas abundance (oil-bearing area or output of oil,gas and water) in the subregions.Such a relation between D values of fault systems and oil-gas distribution will provide a clue for researching the accumulation of oil and gas and their prediction in petroliferous basins.
文章编号:     中图分类号:P618.130.2    文献标志码:
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引用文本:
周新桂,孙宝珊,刘金红,1997.辽河科尔康油田断裂分形特征与油气关系[J].地质力学学报,3(1):81-87.DOI:
Zhou Xingui,Sun Baoshan,Liu Jinghong,1997.FRACTAL CHARACTERISTICS OF FAULT SYSTEMS AND ITS RELATION TO OIL-GAS TRAPS IN KERKANG OIL FIELD OF LIAOHE BASIN[J].Journal of Geomechanics,3(1):81-87.DOI:

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