Reservoir fracture characteristics and its influence on oilfield development in Chang 4+5 formation in southern Puziwan area

摘要

Natural fractures controlled by the palaeotectonic stress field and artificial fractures controlled by the current stress field totally determined the distribution of the seepage system in super low permeability reservoir[1]. Synthetically evaluation of the influence of fractures on oilfield development and the research on regularity of natural fractures distribution and the effect of stress field on the fractures are made in this paper, which is of important theoretical and practical significance in improving the development effect in super low permeability reservoir.