Research on small-scale sand fracturing and puff technology

Affected by complex fault blocks, sedimentary environment and reservoir physical properties, Jidong Oilfield generally develops small-scale sand bodies, accounting for 24.2% of the produced reserves medium low permeability reservoirs. Such bodies rely on elastic energy to develop are difficult use effectively. In this paper, through three-dimensional hydraulic model experiment analysis oil layer-dry layer-mudstone mixed body, reasons that affect parameters obtained. The results show that: length high-permeability area, intermediate-permeability dry layer rate change parameters, viscosity construction fluid, displacement have an impact effect fracturing enhanced injection storage.