The feasibility and advantage of calculating residual oil by single well geological reserve and well-point residual oil distribution are demonstrated by starting with a case of reserve calculation by using well-point areal weigh method for single well controlled oil-bearing area in Erzhongxi block.
The material source of E 1_3 in Shaxi zone is established by the analysis of such fields as the background of paleogeography and characteristics of the rocks and minerals, the depth, the proportion of sandstone the grain size and the depth of single sand body.