车排子地区石炭系火山岩地震相特征

The Characteristics of Seismic Facies of Carboniferous Volcanic in Chepaizi Area

摘要: 车排子地区石炭系火山岩储集空间类型主要受岩相控制，不同的岩相控制了不同的孔缝组合类型，通过火山岩地震相特征的研究，可以精细识别火山岩岩相，从而对火山机构进行精细描述。通过对工区钻井地震相特征的剖析，总结工区石炭系高产井特征如下：高产井以近口亚相为主；火山岩产状与地层界面构成“反屋脊”模式；多期次火山作用特征明显；风化壳储层发育；有利的储盖组合。

Abstract: The volcanic reservoir space in carboniferous of Chepaizi area is mainly controlled by facies, and different facies have different types of cracks and pores. By the study of the characteristics of seismic facies of volcanic rocks, it can fine identify the volcanic facies, thus fine describing volcanic bodies. By the analysis of seismic facies of drilling in the research area, we summarized that the high-yield wells in carboniferous are characterized as follows: high-yield wells subfacies are mainly near the crater; the occurrence of the volcanic and the interface of the formation constitute a “reversed roof” mode; the multiperiodic volcanism characteristics are obvious; weathering crust reservoir is developed; and the reservoir and caprock have a favorable combination.