Abstract: Analog signals corresponding to color images or pixels of a thin section of a rock reservoir are digitized and then filtered to isolate the pixels representative of pores in the thin section. The pores so isolated are then counted, measured for their total pore perimeter and labelled.Each area of pixels representative of pores of value one is progressively eroded and dilated, pursuant to which one layer of pixels of ones on the perimeter of the area is converted to zeros and, if a seed pixel remains, one layer of pixels of ones is added to the perimeter of the area. Thereafter, the original object undergoes two successive erosions followed by two dilations if a seed pixel remains. Successive iterations of the erosion and dilation cycle continue until the last erosion eliminates the seed pixel of the area.

Abstract: In accordance with an illustrative embodiment of the present invention, an acoustic logging transducer array includes cylindrical transmitter and receiver transducers whose axes are aligned perpendicular to the longitudinal axis of a longitudinally extending support member in a borehole. The transducers are eccentered in the borehole with the receiving transducers mounted in a pad member which is supported near the borehole wall.