碳酸盐岩礁相地层地震波场特征分析

ANALYSIS ON SEISMIC WAVE FIELD'S CHARACTERISTICS OF REEF IN CARBONATE STRATA

碳酸盐岩礁作为特殊的碳酸盐岩隆,是石油和天然气良好的储存场所。为了揭示其地震波场响应特征,采用高精度相移加插值波场延拓算子,对根据某地区生物礁相地层的地质特征所设计的模型,进行地震波场正演和偏移处理。结果表明,生物礁的特殊地质条件决定了其在地震剖面上必然出现异常响应,对响应特征的分析解释能够在油气勘探中发挥作用,所做的地震数值模拟工作,对碳酸盐岩礁体油气藏勘探具有指导性意义。

As a kind of special carbonate buildup, reef in carbonate strata was good deposited room for oil and gas. To reveal its seismic wave field response characteristics, a high-precision phase shift plus interpolation wave field continuation operator was used in the forward modeling and migration on reef model built based on geologic features of reef reservoir. The results showed that abnormal response on seismic section was consequentially induced by reef's peculiar geologic conditions. The analysis and interpretation on response characteristics were helpful in oil and gas exploration, and seismic wave field simulation could be a guidance in oil and gas exploration of reef reservoirs.