断裂体系多重分形谱特征及其应用

Multi-f ractal spectrum behaviour of fault system and its application

在对松辽盆地北部齐家一古龙地区泥岩裂缝油藏形成机理进行研究的基础上，应用多重分形理论计算了该区地反射层在不同区域内断裂体系的多重分形谱f（a）。通过对各区断裂体系多重分形谱特征的分析，发现多重分形谱f（a）和a高值区与泥岩裂缝油藏分布存在较好的对应关系。这不仅表明断层伴生裂缝是该区泥岩裂缝的主要成因类型，而且也表明断裂体系多重分形谱特征是定量描述泥岩裂缝油藏油气运移、聚集条件的一个重要参数。笔者根据这一规律，对该区泥岩裂缝油藏有利分布区进行了预测。

Multi-f ractal spectrum f(a) of fault system in different parts of T, reflectionhorizon in the region has been made by introducing present multi-f ractal theory af-ter analysing generation mechanism of fractured mud reservolr in Qijia-Gulong re-gion of North Songliao basin. An overall analysis of multi-f ractal spectrum be-haviour of fau1t system in each part says that high value zones of multi-f ractal spec-trum f(a) and a have obvious c0rrelation with fractured mud reservoir. This corre-lation shows that fault-associated fracture forms a major type 0f mud fractures inthis region, and that multi-f ractal spectrum behaviour of fault system is an impor-tant parameter which quantitatively describes hydrocarbon accumulation and migra-tion in fractured mud reservoir. Authors predict favourable fractured mud reservoirby using this principle.