从地震信息划分三种不同程度的正、负反转构造样式

根据地震信息,尝试划分了轻微、中等及强烈等三种不同程度的正、负反转构造样式,以不同实例论述了这些构造样式的性质与演化模式。构造反转对油气聚集一般是有利的,但也有可能发生不利影响。正反转构造中,以中等正反转构造样式最有利于油气聚集,反转太强烈时,容易破坏圈闭结构;负反转构造中可常见风化壳储层,为油气储集创造有利条件。

Seismic Information Shows Different Extent of Styles of Positive and Negative Reversal Structures

Based on available seismic information,slight, moderate and extensive extents of styles of positive and negative reversal structures are classified. Characteristics and evolution models of these styles of structures are discussed in some adapted cases. Reversed structures are usually favorable to hydrocarbon accumulation but maybe not in some instance. In positive reversal structures, the moderate extent of ones are most favorable to hydrocarbon accumulation but texture of traps is easy to be damaged if they reverse extensively. Weathering crust reservoirs are common in negative reversal structures, which are also favorable to hydrocarbon accumulation.