摘要
为了充分利用井壁电成像测井资料信息,定量评价储层裂缝和孔洞,文章针对测井方法的特点,开展了成像测井资料的坏电极剔除、深度对齐、电压校正、规范化、加速度校正、方位校正预处理,灰度变换、灰度插值、图像增强处理与显示、目标体与背景分离、目标体脊线提取、裂缝轨迹跟踪和裂缝定量参数计算方法的研究,给出了一套井壁电成像测井资料自动定量评价裂缝的流程。所优选出的Akima三次插值为灰度插值的最佳算法,正方型中值滤波为图像滤波的最佳算法,直方图规定化为图像增强的最佳算法,Deutch细化为目标体脊线提取的最佳算法,HOUGH变换为裂缝轨迹跟踪的最佳算法。在WINDOWS下用C语言编制了井壁电成像测井资料定量评价软件,并进行了资料处理。实验表明,该方法确实行之有效。
In order to make full use of sidewall imaging well logging data and quantitatively evaluate fractures and cavities in reservoirs, and in view of the characteristics of logging methods studies are performed in the following aspects: preprocessing of logging data, such as elimination of bad electrode, depth matching, voltage correction, standardization, acceleration correction and azimuth correction, quantitative evaluation methods, such as grey level transformation, grey interpolation, image enhancing and displaying, separation of target with background, extraction of target hinge line, tracing of fracture course and quantitative calculation of fracture parameters. A flow chart of automatic quantitative evaluation of sidewall imaging well logging data is presented. Several optimum algorithms are selected, such as Akima cubic interpolation for grey interpolation, square medium filtering for image filtering, histogram standardization for image enhancing, Deutch refining for extraction of target hinge line, and HOUGH transformation for tracing fracture course. Quantitative evaluation software is programmed with C-language under WINDOWS and is applied in data processing. Test with real data shows that this method is practical.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2006年第9期62-64,共3页
Natural Gas Industry
关键词
成象测井
裂缝(岩石)
定量分析
评价
计算机程序
imaging well logging, fracture (rock), quantitative analysis, evaluation, computer program
