裂缝性油气藏勘探技术与应用

Exploration Technique of Fractured Hydrocarbon Reservoirs and Its Application

裂缝不仅是决定低渗透储层产能的关键因素,而且也直接控制着裂缝性油气藏的形成与分布。裂缝性储层识别与评价一直是油气藏勘探的重点和难点,而地质资料分析只是作为裂缝分布的一种定性测算,测井中的裂缝鉴定虽能达到定量水平,但只是小范围的、局部的。地震资料虽是大范围的,但其对地层的分辨率较低。因此,综合应用各种资料描述和预测裂缝分布是裂缝性油气藏勘探的基本思路。

Fractures not only decide the productive capacity of low--permeability reservoirs but also directly comrol the formation and distribution of fractured hydrocarbon reservoirs. In oil--gas exploration, identification and evaluation of fractured reservoir are always the key and a hard nut to crack. Analysis of geological data is just a qualitative estimate of fracture distribution. Fracture identification in well--logging is able to achieve the quantitative level, but it is only in small .scale. Seismic data, though in large .scale, has lower stratigraphie resolution. Therefore, it is the basic ideas of fractured oil and gas reservoir exploration to describe and predict fracture distribution with the integrated application of various information.