摘要
三塘湖盆地勘探程度低,应用目前的裂缝预测方法难以从宏观上准确地预测凹陷内裂缝带的展布。本文依据裂缝具有强烈非均质性的地质特性,并结合相干属性技术,提出了基于多方位类比相干属性的裂缝预测方法。应用该方法对三塘湖盆地马朗凹陷卡拉岗组裂缝带的空间展布特征进行预测,得出以下认识:①马朗凹陷石炭系卡拉岗组中发育两个大的裂缝带,主要为断裂伴生构造裂缝,其展布特征与控制其发育的断裂具有一致的方向性,具体表现为在凹陷东南区域内的裂缝带沿近东西方向展布,凹陷西北区域内的裂缝带沿北东方向展布;②从地球物理特征反映的敏感程度分析,沿北东方向展布的裂缝带比近东西方向展布的裂缝带更发育,是油气勘探重点关注区域。
Due to low exploration maturity in Santanghu Basin,it is hard to microscopically and accurately predict the distribution of the fracture zone in the Depression by only utilizing nowadays fracture prediction method. Based on the fact that the fractures there showing strong heterogeneity and by referring the coherent attribute technique,a multiazimuthal analogy coherent attribute fracture prediction method was proposed in this paper. After applying the method to the fracture spatial distribution prediction in Kalagang Formation fracture zone in Malang Depression,the following understandings were achieved:①Two big fracture zones were developed in Carboniferous Kalagang Formation in the Malang Depression with the fracture associated structural fractures as the main fractures in the zones. Their distribution feature and the fault which controls the features' development have a consistent direction,and their exact presentations are that the fracture zone in the ES area distributes along the nearly EW direction,while the fracture zone in the NW area distribute along the NE direction.②The sensitive extent analysis from the geophysical characteristics shows that the fracture zone which develops in the NE direction were more developed than the one in nearly EW direction,being the favorite target zone in the future oil&gas exploration.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2010年第5期714-719,共6页
Oil Geophysical Prospecting
基金
国家自然科学基金项目(No.40602015)
中国地质大学(武汉)优秀青年基金(CUGQNL0605)
中国地质大学(武汉)湖北省油气勘探开发理论与技术重点实验室开放基金(YQ2006KF17)联合资助
关键词
非均质性
相干体技术
裂缝预测
卡拉岗组
马朗凹陷
heterogeneity,coherence cube,fracture prediction,Kalagang Formation,Malang Depression
