Due to the location of South West Sannan field, on the south of Abu Gharadig basin in the Western Desert, the majority of wells are being drilled, vertical wells to maximize the production and hydrocarbon recovery in the mature reservoirs of the study area. It is of great challenge to drill a high angle well successfully through a such complex structure, tectonic setting and highly stressed shale. The stratigraphic setting of the area possesses significant drilling challenges, that vary widely from reactive shale to stress-related problems.
The objective of this paper is to investigate, focus and integrate geologic knowledge for a better understanding of the stratigraphy, structure and geomechanical horizontal stress of the study area, in order to estimate new technical approaches to analyze the wireline data specially the Well bore images and select the optimal methods to study the impact of horizontal stresses on the well bore.
Borehole imaging services provide microresistivity images of the formation in water based mud. Borehole imaging is the preferred approach for determining net pay in the sediments of continental and fluvial depositional environments. Visualizing sedimentary features let to define important reservoir geometries reservoir parameters, and the interpretation of image-derived sedimentary dip data which helps to better understand of sedimentary structures. Geomechanical applications of image logs include fracture identification and differentiation of closed and open fractures along with stress analysis and borehole stability determination. Image logs also assist in porosity determination, presence of vugs, cemented nodules, induced fractures, etc.