基于测井资料识别气层及适用性分析研究  

IDENTIFICATION OF GAS ZONE BASED ON WELL LOGGING DATA AND APPLICABILITY ANALYSIS

作　　者：燕继成[1] 刘李春 

机构地区：[1]大庆油田勘探开发研究院测井室,黑龙江大庆163712 [2]中石油集团测井有限公司长庆事业部,陕西西安710002

出　　处：《国外测井技术》2009年第3期16-18,3,共3页World Well Logging Technology

摘　　要：我国蕴藏着丰富的天然气，随着对天然气的勘探力度的不断加大，利用测井资料准确地识别天然气已经成为目前测井资料综合解释应用的热点。一当储层中存在天然气时，由于其含氢指数与油水层的不同，在中子测井曲线上会显示出明显的差异；自然伽马低值，密度测井值偏低；同时，会导致纵波速度减小，声波时差增大，根据这些差异，能有效地利用测井资料识别天然气。本文依据XX构造地质特点，分析XXX地区不同性质储集层的测井响应特征，使用测井曲线可提取一些具有分辨力较高的特征参数来识别气层，有效地识别了气层。China has plenty of natural gas reserve.With increasing exploration of natural gas,accurate identification of natural gas with well logging data has become the hotspot of integrated interpretation.When there is natural gas in the reservoir, neutron logs will show differences obviously owing to different hydrogen index and oil water layers.Differences of low spontaneous gammar value,downward low density logging value,reduction of longitudinal wave speed and enlargement of sonic differential time can be used to identify natural gas with well logging data.According to the geologic characteristics of XX structure,the logging response characteristics of the reservoirs of different properties in XXX area are analysed from which some high-resolution characteristic parameters are extracted to identify gas zones.It is effective.

关 键 词：综合解释 气层识别 含氢指数 声波时差 自然伽马 密度 测井 

分 类 号：P631.84[天文地球—地质矿产勘探] P618.130.8[天文地球—地质学]