用常规测井资料识别裂缝发育程度的方法  

A New Method for Discrimination of the Degree of Fracture Development Using Conventional Log Data.

作　　者：卢颖忠[1] 黄智辉[2] 管志宁[2] 

机构地区：[1]石油大学 [2]中国地质大学

出　　处：《测井技术》2000年第6期428-432,共5页Well Logging Technology

摘　　要：裂缝发育程度在裂缝性地层的研究中非常重要。提出了利用常规测井资料识别裂缝发育程度的新参数和方法。根据裂缝的存在能增加地层的导电性和裂缝性地层电阻率曲线特征 ,提取反映浅、中、深探测范围内裂缝发育程度的 3个参数 ,即 SR/ RXO、SR2 / (RXO· RI)和 SR3/ (Rt· RI· RXO) ;在模型样本上确定出非裂缝层的电阻率和以上 3参数识别裂缝发育程度的标准 ,然后用于识别非模型样本的裂缝发育程度。在新疆某油田裂缝性砂砾岩地层的应用表明 ,效果良好。Study on the degree of fracture development in fractured formation is very important. A new method for discriminating it using conventional log data is put forward. Formation conductivity and the features on resistivity curve within the interval of fractured formation increase due to the presence of fracture. Thus three parameters that reflect the degree of fracture development within shallow, intermediate and deep radial investigation depths are extracted. They are SR/R XO , SR 2/(R XO ·R I) and SR 3/(R t·R I·R XO ). Resistivity of non-fractured formation and the criteria for fracture discrimation with the three parameters are determined for model samples. Then they are used to discriminate the degree of fracture development for non-model samples. This method is used in fractured sandy-conglomerate formation, Xinjiang Oilfield. Case history shows the result is good.

关 键 词：裂缝发育程度 油田 裂缝性储集层 测井数据 

分 类 号：P631.443[天文地球—地质矿产勘探] TE122.23[天文地球—地质学]