CAJ | 학술논문

页岩储层矿物组分的含量及其分布特征是水力压裂的重要参考因素。以中扬子地区下寒武统水井沱组页岩为例，利用 ImageJ 软件对页岩 CT 扫描图像进行处理和分析，研究页岩储层中矿物组分的分布特征，并讨论矿物组分含量和分形维数之间的关系。结果表明：页岩 CT 图像上矿物组分的密度比有机质和孔隙的密度要大得多，可以根据 CT 图像的灰度值识别矿物组分。页岩中矿物组分含量越多，矿物组分的分形维数也越大。在矿物组分含量相近的情况下，矿物组分结构越复杂，其分形维数也越大。基于灰度 CT 图像的页岩矿物组分分形特征研究是页岩储层评价的有效补充，可以更好地指导页岩脆性评价。
혈암저층광물조분적함량급기분포특정시수력압렬적중요삼고인소。이중양자지구하한무통수정타조혈암위례，이용 ImageJ 연건대혈암 CT 소묘도상진행처리화분석，연구혈암저층중광물조분적분포특정，병토론광물조분함량화분형유수지간적관계。결과표명：혈암 CT 도상상광물조분적밀도비유궤질화공극적밀도요대득다，가이근거 CT 도상적회도치식별광물조분。혈암중광물조분함량월다，광물조분적분형유수야월대。재광물조분함량상근적정황하，광물조분결구월복잡，기분형유수야월대。기우회도 CT 도상적혈암광물조분분형특정연구시혈암저층평개적유효보충，가이경호지지도혈암취성평개。
The mineral component and its distribution characteristics in shale reservoirs are important factors for hy-draulic fracturing. Taking Shuijingtuo Formation of lower Cambrian in the Middle Yangtze area as an example,we used the ImageJ software to process and analyze the shale CT images,study the distribution characteristics of mineral components in shale reservoirs,and discuss the relationship between the content of mineral composition and fractal dimension. The results showed that the density of the shale mineral component in the CT image is much greater than the organic matter and micro pore structure,so the mineral component can be identified by the gray value of CT image;the more the mineral component content is,the bigger the fractal dimension of the mineral component is in shale. The studies showed that the fractal fea-tures of shale mineral components based on the gray value of CT image is an effective supplement for shale reservoir evalu-ation,and also provides a guide for the shale brittleness evaluation.