Abstract

Fullbore Formation MicroImager tool is part of new generation borehole imaging devices provided by the MAXIS 500 system. It is an extension of traditional dipmeter technology and overcomes the inadequacies of conventional dip data. The Fullbore Formation MicroImager tool has eight pads, including four flaps consisting 192 array electrodes with a vertical and lateral sidewall image resolution of 5mm and image coverage up to 80 percent in 8.5 inch (21.59cm) diameter borehole. The tool offers enhanced vertical resolution, lateral exploration capabilities, high volume of data acquisition with real time processing and image display. A detailed image interpretation and dip evaluation has been carried out in Krishna Godavari Basin. The analysis aimed primarily to recognise structural elements and associated features. In the present study, structural elements like unconformities, fractures, faults, slump deformation structures and foliations were detected and defined. Infact, some faults were recognised even in the absence of distortion. Complex structural features like growth faults and associated antithetic faults were clearly visualized on the images. As exploration and production become critical and geological problems encountered become increasingly complex, the use of borehole imagery techniques will help the geologist, log analyst and production engineer for enhancing the future exploration and exploitation programmes