CAJ | 학술논문

简要介绍了测井资料洛仑兹系数的原理和计算方法，将洛仑兹系数和含砂比引入到测井数据处理当中。将常规测井曲线的洛仑兹系数与含砂比结合能够对钻井剖面的非均质性进行有效评价，为地层非均质性的定量评价提供了一种新思路。首先根据地层资料信息选择了对地层非均质性较为敏感的自然伽马曲线作为地层非无质性评价曲线；然后计算出地层的含砂比和洛伦兹系数；最后针对自然伽马测井曲线的洛伦兹系数结合含砂比给出了钻井剖面地层的层内非均质性，进一步挖掘地层的砂体结构信息。根据多井评价结果做出了鄂尔多斯盆地苏里格气田召60区块地层和含砂比的平面分布图，可以看出盒8上与盒8下段地层中部较为均质，储层分选性较好。
간요개소료측정자료락륜자계수적원리화계산방법，장락륜자계수화함사비인입도측정수거처리당중。장상규측정곡선적락륜자계수여함사비결합능구대찬정부면적비균질성진행유효평개，위지층비균질성적정량평개제공료일충신사로。수선근거지층자료신식선택료대지층비균질성교위민감적자연가마곡선작위지층비무질성평개곡선；연후계산출지층적함사비화락륜자계수；최후침대자연가마측정곡선적락륜자계수결합함사비급출료찬정부면지층적층내비균질성，진일보알굴지층적사체결구신식。근거다정평개결과주출료악이다사분지소리격기전소60구괴지층화함사비적평면분포도，가이간출합8상여합8하단지층중부교위균질，저층분선성교호。
We introduced the calculation principle and the application method of Lorentz coefficient of logging data .Lorentz coefficient and sand ratio were introduced into the logging data processing . Lorentz coefficient and sand ratio of conventional logging curves can be used to evaluate formation effectively .It provided a quantitative formation evaluation method .In order to evaluate the formation heterogeneity ,firstly we selected GR logging curve as evaluating curve as it is more sensitive to heterogeneity ;secondly ,we evaluated the heterogeneity according to Lorentz coefficient combined with sand ratio ;and further , we extracted more information on sand structure formation . The formation plane distribution map of Lorentz coefficient and sand ratio is given based on multi‐well evaluation results .It can be concluded that the formation of middle region of Zhao 60 block of Sulige gas field of Ordos basin is more homogeneous with good sorting .