Computer script for processing images and use thereof in a method for facies image determination

A method comprising the following steps:

• using a computational script stored on a non-transitory computer-readable medium for treating well images using a Canny Edge Detection algorithm, the computational script comprises the following operations:
• applying a 5×5 Gaussian filter to smooth an image of a well and reduce noise in the image;
• calculating an image intensity gradient of each pixel in the smoothed image;
• removing pixels that do not correspond to an edge of the image based on the image intensity gradient of each pixel:
• determining which remaining pixels are true edges based on predefined image intensity gradient upper and lower limits;
• highlighting textural and structural variations of rock in an image with the determined true edges;
• and
• quantifying edge contrasts by depth based on the determined true edges:
• adjusting a tomographic profile depth through correlation between a coregamma curve measured in a laboratory and a reference gamma ray curve of a first profiling run acquiring data in a well;
• fine adjusting the tomographic profile depth with correlation of textures and geological surfaces observed in an image profile of the well and in the tomographic profile;
• taking lateral samples from pre-established depths of the well;
• repositioning of lateral samples, wherein repositioning of the lateral samples comprises determining the exact depth at which the lateral samples were taken based on the image profile of the well;
• calibrating different facies through textural and structural comparison between rock data from the lateral samples taken and the image profile of the well;
• interpreting facies in the image profile using the highlighted textural and structural variations of rock in the image with the determined true edges from the computational script for treating images;
• and
• extrapolating image facies for depths of unsampled intervals between lateral samples of the well.