砾岩储层精细描述中标准测井资料的应用  

Application of Standard Logging Data in Fine Description of Conglomerate Reservoir

作　　者：李亮[1] 宋子齐[2] 程国建[2] 雷启鸿[1] 刘登飞[1] 

机构地区：[1]长庆油田分公司勘探开发研究院,陕西西安710021 [2]西安石油大学,陕西西安710065

出　　处：《测井技术》2006年第6期544-547,共4页Well Logging Technology

摘　　要：克拉玛依油田七区的标准测井资料是指使用标准电极系视电阻率测井、自然电位测井和井径测井,以相同的1:500深度比例尺及相同的横向比例进行测井作业所取得的资料。这种资料本来并不具备定量解释储层孔隙度和含油饱和度的能力,但这种资料占该区测井资料总量的比率高达34%。利用标准电极系视电阻率资料和岩心分析资料建立了视电阻率-岩性图版,利用自然电位减小系数α和岩心孔隙度分析资料建立了α-图版,根据综合测井资料求出标准测井视电阻率校正系数,进而确定了饱和度计算方程的参数。与相应的综合测井资料计算结果相对比,用该方法得到的孔隙度平均绝对误差及相对误差分别为1.85%和11.88%;含油饱和度平均绝对误差及相对误差分别为9.08%和24.75%。将该方法有选择地应用到该区砾岩储层精细描述研究中,弥补了缺乏综合测井资料无法进行测井储层评价及参数研究的缺陷。The information of Normalized Well Log （NWL） in the district No. 7 of Karamay Oilfield means the information acquired by normal apparent resistivity log, spontaneous potential log and caliper log with normalized depth scale of 1 ： 500 and calibration scale. This kind of information originally is not capable of quantitatively interpreting porosity and oil saturation, however, it has taken the proportion to total logs in the district up to 34 %, so it should be used to its greatest possibility. This pa- per utilizes the normal apparent resistivity log and core analysis data to establish normal apparent resistivity-lithology charts, utilizes SP decrease index αand core porosity φ to establish α-φ charts, and calculates correct factors of the normal apparent resistivity according to comprehensive well logs （CWL） and then fixes on parameters of saturation calculation equations. Comparison the results of the improved NWL with the corresponding CWL, the average absolute error and relative error of porosity are 1. 85% and 11.88% respectively, and those of oil saturation are 9.08% and 24. 75% respectively. Selective application of the improved NWL to fine conglomerate reservoir description in the district offsets the defect that reservoir parameters cannot be studied because of absence of CWL data.

关 键 词：测井资料 砾岩储层 精细描述 标准测井 综合测井 岩心分析 孔隙度 饱和度 克拉玛依油田 

分 类 号：TE122.24[石油与天然气工程—油气勘探]