国产MCI微电阻率成像测井仪的图像处理方法-地球探测与信息技术专业论文.docxVIP

国产MCI微电阻率成像测井仪的图像处理方法攘要 国产MCI微电阻率成像测井仪的图像处理方法 攘要 微电阻率成像测井能提供井眼地层高分辨率=二维电阻率图象，是一种储层地质 符鬣湃徐仪器，艇应瘸予裂缝评价、淀积鞠分辑、建瑟瑟理翊分、薄菇谖剐、次生 孔隙结构描述等。利用电成像测井资料提取储层中的裂缝、孔洞参数是成像测井资 料处理及储层定艇评价的重要内容。 首先分绥了番产徽电辍攀成像溺劳仪器MCI—A藤疆，磷究了鸯戎像资料预楚 理技术，熏点研究了利用二维二进小波变换图像分害《算法，对碳酸盐炭地层中的电 成像资料，进行孔洞、裂缝等子目标的分割与提取，并介绍了根据分割后的子图像 磊轹边缘坐标计舞遗袋特征参数魏平均瑟积、平均宽发、平均长度等)的定蓬许冀 方法。 完成了二维二进小波变换图像分割算法及储层参数定量计算算法程序，并挂按 翻窀残豫经理解释程_l芋中，采爝本算法还对霹矫馓电阻率或橡测井仪(FMI、EMI、Star II等)的测井资料进行了处理分柝，能正确指出裂缝孔濒发育带，实现了孑L澜、裂缝 性地层的自动特征提取和储层参数的定量评价。 该髯法软彳牛已成为国产微电阻率藏像测并饺器鼢配套技术，并爝于实际生产工 作。 主题词：成像溯井微电阻举成豫测并图像预簸理小波交换图像分割裂缝 孑L澜 定量译馀 Image Image Pocessing eMethod of MicroConductivity Imaging Logging Abstracts：Microconductivity imaging logging provides the high resolution 2D image of formation around the borehole．which is a tool for formation characterization．The tool can be utilized for the evaluation of fractures，the identification ofthin beds，the division of strata bedding，the analysis of sedimentary features，the interpretation of depositoonal environment．and the description ofgeological structure(strike，dip，faults)in and near the borehole．Applying electric imaging logs to extract the parameters of fractures and pores of reservoirs is the part and parcel to the processing of imaging logs and the quantitative evaluation ofreservoirs． In this paper,the printiple is firstly introduced，and the pre—processing of microresistivity imaging logging data studied．Secondly,the algorithms of image segment by two·dimensional dyadic wavelets conversion is thoroughly discussed for extracting and segmenting the sub-objects such as fractures and vugs from electrical imaging logging data of carbonate reservoirs．Thirdly,the quantitative evaluation method is proposed for computing reservoir parameters(average length，average width，et a1．)on the basis of sub·image ofedge·coordinate． A program of the algorithms for the image segmentation by two—dimensional dyadic wavelets conversion and the parameters of reservoir is worked out，which has hung to the commercialized soRwa