海外低勘探程度地区勘探技术与应用

Techniques and application of overseas exploration in areas of lower exploratory degree.

在海外地震测网稀或不规则、钻井少甚至没有钻井资料且地质构造复杂的所谓低勘探程度地区进行风险勘探,其并不十分明朗的勘探前景为我们提供机遇的同时也提出了挑战。本文在深入研究的基础上,总结出了一套适用于低勘探程度地区的勘探技术。其主要内容包括确定盆地的主力凹陷、确定盆地的主力勘探层系和成藏组合、选择有利构造带和规模目标等,形成了一套以规模目标为核心的定量—半定量评价标准及成熟的工作流程。将这套技术应用于海外B盆地的油气勘探中,取得了很好效果。

When the risk exploration is carried out in the areas of so-called lower exploration degree abroad where the characteristics are sparse or irregular seismic survey grid,rare or without drilling data and complex structures,the unclear exploration prospect gives us a challenge while providing us a opportunity.On the basis of deep studies,the paper summarized a set of exploration techniques suitable for the areas of lower exploration degree.The main contents include definition of main sags of the basin,defining main exploratory series of strata and reservoir combination of the basin and selection of favorable structural zones and targets of industrial scale,forming a set of quantitative and semi-quantitative evaluation standard taking the targets of industrial scale as a core and mature working flow.It achieved good results when using this set of techniques for oil/gas exploration in B basin abroad.