测井精细解释在普光气田储量计算中的应用

普光气田应用常规测井解释方法计算得到的矿物成分含量、孔隙度与岩心分析结果存在较大偏差,难以满足储量申报需要.因此,开展测井精细解释攻关研究显得尤为重要.首先选取普光气田取心井作为关键井,开展岩心刻度测井精细解释研究;其次利用PE曲线并结合其余测井资料计算储层矿物成分含量;最后分储层类型优选权值系数将中子和密度孔隙度进行合理组合,计算储层孔隙度,并编制适用普光气田的测井资料处理软件.将测井精细解释结论同取心井岩心分析资料进行对比分析,测井处理解释精度大幅提高.该测井精细解释方法有力支撑了普光气田储量参数的研究及探明储量的申报.

Application of fine logging interpretation in reserve calculation, Puguang Gas Field

The mineral composition and porosity interpreted by conventional logging are obviously different from core analysis,hence are not qualified for reserve prediction.In view of this,it is very important to carry out fine logging interpretation.A core hole in the Puguang Gas Field was chosen as the key to study the error between core and logging analysis.Mineral composition was calculated from PE curves and other logging data.Based on CNL and DEN as well as proper programming,porosity was calculated.New software to process the logging data from the Puguang Gas Field was made.The precision of logging interpretation was improved obviously,which backed up for the parameter research and reserve demonstration in the Puguang Gas Field.