三塘湖盆地火山岩地震处理和测井识别技术及应用

Seismic Processing and Logging Identification Technique of Volcanic Rocks in Santanghu Basin

由于火山岩具有极强的非均质性,对其识别与预测是油气勘探的难题之一,此次油气勘探综合使用速度分析、地震反射特征分析、三瞬信息分析,以及测井声波约束反演等技术和方法,有效地识别了三塘湖盆地四类火山岩储集体:火山角砾岩,安山岩,玄武岩,辉绿岩。首次圈定出它们的横向展布,有效进行了裂缝储集体的预测,为火山岩油气藏的勘探开发提供了一定的理论依据和技术方法。

Volcanic identification and evaluation are the difficulties for hydrocarbon exploration because volcanic rocks are dominated by fracture type reservoir. Based on the analysis of seismic wave and acoustic velocity, seismic reflection characteristics and three instantaneous parameters information, as well as the technique of logging acoustic constrained inversion, the study of response characteristic for volcanic reservoirs in Santanghu basin is conducted, which provided reliable basis to determine and evaluate the volcanic reservoir property.