Research of the remaining oil displacement in Chang 8 low permeability reservoir in Fanxue area of Ordos Basin

Abstract In Fanxue area of Ordos Basin, Chang 8 Oil Group has been in the development stage, the current development of more difficult and costly. In this paper, Chang 8 layers in this area are studied by using reservoir sedimentology, logging geology, petroleum geology, petrophysics, 3D reservoir modeling and numerical simulation and laboratory analysis techniques. The reservoir distribution pattern, remaining oil distribution pattern and well pattern optimization provide relevant technical results for the later development and provide guarantee for increasing reserves and production.