摘要
电阻率测井成像图中存在宽度和位置不定的空白条带,而目前常用的空白条带反距离加权插值填充法仅依靠像素点距离参数计算插值,往往导致填充后区域与实测区域纹理不连贯,纹理易呈现直线状,与实际状况不符。为此,将裂缝区域形态与分布信息作为参量,构建插值计算模型,形成融合裂缝形态分布信息的空白条带填充法。该填充算法能根据插值点与裂缝形态拟合线的相对位置关系,动态调整参考点对插值点插值的权重系数,填充后的裂缝区域纹理连贯平滑,更符合裂缝实际形态和分布的规律。实际测井数据应用表明,相较于传统填充方法,采用该方法填充后的裂缝分布拟合线与霍夫变换后曲线相似度提升25%以上,不连贯填充点数量下降88%以上,性能提升明显。该方法的应用成果可为后续测井图像中各种裂缝的智能识别和精确分割提供更好的数据支撑。
There are blank strips with varying widths and positions in resistivity logging images.However,the commonly used inverse distance-weighted interpolation filling method for blank strips only relies on the distance parameters of pixel points to calculate interpolation,which often leads to inconsistent texture between the filled area and the measured area,and the texture tends to be linear,which is inconsistent with the actual situation.To solve this problem,this paper takes the morphological information and distribution of fractures as parameters,constructs an interpolation calculation model,and develops a blank strip filling method that inte-grates the morphological and distribution information of fractures.The filling algorithm can dynamically adjust the weight coefficient of the reference point to the interpolation point according to the relative position relation-ship between the interpolation point and the morphological fitting line of fractures.The texture of the fracture area is coherent and smooth,which is more consistent with the actual morphology and distribution of the frac-ture.The application results of actual logging data show that compared with the traditional filling method,the similarity of the distribution fitting line of fracture filled with this method and the curve after the Hough trans-form increases by more than 25%,and the number of discontinuously filled points decreases by more than 88%,with obvious performance improvement.The application of this method provides more favorable data support for intelligent identification and precise segmentation of various fractures in logging images in the future.
作者
夏文鹤
韩玉娇
郭全兴
官文婷
杨燚恺
陈向东
XIA Wenhe;HAN Yujiao;GUO Quanxing;GUAN Wenting;YANG Yikai;CHEN Xiangdong(School of Electrical Engineering and Information,Southwest Petroleum University,Chengdu,Sichuan 610500,China;SINOPEC Petroleum Engineering Technology Research Institute,Beijing 102200,China;Engineering Technology Research Institute,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610050,China;School of Information Science and Technology,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2024年第3期533-542,共10页
Oil Geophysical Prospecting
基金
国家重点研发项目“超快响应湿度传感器在油气勘探、工业监控等领域的应用验证”(2023YFB3210205)资助。
关键词
电测井成像图
空白条带填充
井壁裂缝
反距离迭代插值法
electrical logging images
filling
blank strip wellbore of fractures
inverse distance iterative interpo-lation method
