塔河油田断溶体油藏地震反射特征类型及规律

Type and regularity of the seismic reflection characteristic of fault-karst carbonate reservoirs in the Tahe oilfield

塔河油田断溶体油藏反射特征可分为三大类、五亚类、十小类。其中,"整体串珠"、"杂乱强"反射特征缝洞发育程度及规模大于"表层连续",是断溶体油藏主要开发对象。不同类型反射特征的产能、累产与放空漏失率呈正相关关系,中深部"杂乱强"特征产能、累产高,说明断溶体油藏油井的产能及累产是表层与中深部缝洞的综合表征,深部规模缝洞体的支撑是决定油井累产的重要因素之一。

The reflection characteristics of the fault-karst carbonate reservoirs in Tahe oilfield can be divided into three categories,five subcategories and ten subclasses.It shows that the development degree and scale of cave-clef the of two types“whole beads”and“clutter strong”are far greater than the"surface continuum",which are the main development objects of the fault-karst carbonate reservoirs in Tahe oilfield.The productivity and cumulative production of different types of reflection characteristics are positively correlated with the leakage rate.Deep reflection characteristics of“strong clutter“are characterized by high capacity,high production.This shows that the productivity and cumulative production of the well in the fault-karst carbonate reservoirs are the comprehensive characterization of the surface and deep seams.The deep cave-cleft is one of the important factors to determine the oil well production.