The optimization of sand control method for moderate sand control technique application in Bohai Bay

Analyzing the design basis of domestic and international sand control method, combining with large scale indoor stimulated experiment of sand production, the theoretical basis of sand control method selection was proposed for moderate sand control technique. It based on three main parameters, uniformity coefficients UC, shale content Vsh, and water swelling property of clay mineral, and the design of sand retention precision was mainly according to median grain diameter (D50) of formation sand. On the basis of analyzing the reservoir characteristics and evaluating the productivity under different sand control method for the typical oil fields in Bohai Bay, this paper presents the criteria of sand control method and parameter selection for moderate sand control technique application in Bohai Bay, and builds corresponding selection chart. This chart has been applied in the sand control design for KL3-2 oil field in Bohai Bay and has been proved reasonable after indoor test, which shows that this chart can be used in field.